阅读说明：本技术 一种抗液化防上浮的地下综合管廊结构及其应用方法 (Liquefaction-resistant and floating-resistant underground comprehensive pipe gallery structure and application method thereof ) 是由 纪展鹏 高洪梅 张鑫磊 刘天宝 王志华 蔡鑫涛 于 2021-08-24 设计创作，主要内容包括：本发明涉及一种抗液化防上浮的地下综合管廊结构及其应用方法,属于综合管廊技术领域。该抗液化防上浮的地下综合管廊结构包括方管状的综合管廊本体、过滤吸水机构、冷却机构和喷气机构,综合管廊本体的上表面嵌设有孔压传感器,过滤吸水机构设置在综合管廊本体的侧壁上,冷却机构设置在综合管廊本体的侧壁上,喷气机构设置在综合管廊本体的顶部。本发明的抗液化防上浮的地下综合管廊结构在地震时,孔压传感器能够迅速发现周围土体含水量的变化,若土体将要发生液化,则可以通过过滤吸水机构、冷却机构和喷气机构的配合,降低土体含水量并固结周围砂土,减少土体发生液化的条件,从而防止综合管廊的上浮。(The invention relates to an anti-liquefaction and anti-floating underground comprehensive pipe gallery structure and an application method thereof, and belongs to the technical field of comprehensive pipe galleries. This underground pipe gallery structure of anti liquefaction preventing come-up includes square tubulose utility tunnel body, filters the mechanism that absorbs water, cooling body and jet-propelled mechanism, and the upper surface of utility tunnel body inlays and is equipped with the pore pressure sensor, filters the mechanism that absorbs water and sets up on the lateral wall of utility tunnel body, and cooling body sets up on the lateral wall of utility tunnel body, and jet-propelled mechanism sets up the top at the utility tunnel body. When the anti-liquefaction and anti-floating underground comprehensive pipe gallery structure is in an earthquake, the pore pressure sensor can quickly find the change of the water content of the surrounding soil body, and if the soil body is about to be liquefied, the water content of the soil body can be reduced and the surrounding sandy soil can be solidified through the matching of the filtering water absorption mechanism, the cooling mechanism and the air injection mechanism, so that the condition that the soil body is liquefied is reduced, and the floating of the comprehensive pipe gallery is prevented.)

1. The utility model provides an anti liquefaction prevents utility tunnel structure of come-up which characterized in that: including square tubulose utility tunnel body, filtration water absorption mechanism, cooling body and jet-propelled mechanism, the upper surface of utility tunnel body inlays and is equipped with pore pressure sensor (2), the filtration water absorption mechanism sets up be used for getting rid of soil body pore water on every side on the lateral wall of utility tunnel body, cooling body sets up be used for freezing into ice with the moisture in the soil body on every side on the lateral wall of utility tunnel body, jet-propelled mechanism sets up the top of utility tunnel body is used for spraying the insoluble gas of low temperature high pressure.

2. The anti-liquefaction and anti-floating underground utility tunnel structure according to claim 1, characterized in that: the utility tunnel body upper end bilateral symmetry outwards extends has winged overhanging flange (1).

3. The anti-liquefaction and anti-floating underground utility tunnel structure according to claim 1, characterized in that: the utility tunnel body lower extreme bilateral symmetry is provided with flat anti strake board (12) that floats.

4. The anti-liquefaction and anti-floating underground utility tunnel structure according to claim 1, characterized in that: filter water absorption mechanism and include filtration suction pump (5) and drainage pipe (6), it sets up to filter suction pump (5) utility tunnel body width direction both ends lateral wall surface, it follows to filter suction pump (5) utility tunnel body length direction evenly spaced sets up, drainage pipe (6) are inlayed and are established in utility tunnel body width direction both ends lateral wall, filter suction pump (5) with drainage pipe (6) intercommunication sets up, the inside bottom surface of utility tunnel body is close to drainage pipe (5) department has seted up escape canal (8), escape canal (8) are followed utility tunnel body length direction sets up.

5. The anti-liquefaction and anti-floating underground utility tunnel structure according to claim 1, characterized in that: cooling body includes liquid nitrogen storage device (15) and liquid nitrogen circulating line (14), liquid nitrogen circulating line (14) inlay and establish utility tunnel body width direction both ends lateral wall surface, the length direction of liquid nitrogen circulating line (14) with the length direction parallel arrangement of utility tunnel body, liquid nitrogen storage device (15) with liquid nitrogen circulating line (14) intercommunication forms the return circuit.

6. The anti-liquefaction and anti-floating underground utility tunnel structure according to claim 1, characterized in that: jet-propelled mechanism includes compressed gas pipeline (9) and gas compression device (13), the upper surface of utility tunnel body evenly separates to be equipped with low temperature compressed gas fumarole (4), compressed gas pipeline (9) inlay and establish utility tunnel body upper end, gas compression device (13) with compressed gas pipeline (9) intercommunication sets up, compressed gas pipeline (9) respectively with low temperature compressed gas fumarole (4) intercommunication sets up.

7. The anti-liquefaction and anti-floating underground utility tunnel structure according to claim 1, characterized in that: the utility tunnel comprises a comprehensive pipe rack body, the inside lateral wall of utility tunnel body is provided with air humiture light sensor (7), the inside top surface of utility tunnel body is provided with high-pressure water mist fire extinguishing system (10).

8. The anti-liquefaction and anti-floating underground utility tunnel structure according to claim 1, characterized in that: sensor (2) parcel has protective housing (3) hole pressure, the vertical partition wall (11) that separate in inside of utility tunnel body.

9. The method of using the anti-liquefaction and anti-floating underground utility tunnel structure according to any one of claims 1-8, wherein: the method comprises the following steps:

(1) the hyperstatic pore water pressure of the soil body around the comprehensive pipe gallery body is measured through the pore pressure sensor (2), and if the hyperstatic pore water pressure reaches a threshold value, the threshold value is set to be gamma^′X h (kPa), wherein h and γ^′The buried depth (unit m) and the floating weight (unit kN/m) of the overlying soil body at the top of the pipe gallery³) Then, a filtering water suction pump (5) on the side wall of the comprehensive pipe rack body is started to remove the super-static pore water pressure of the surrounding soil body, and the pore water in the surrounding soil body is sucked into a drainage pipeline (6) and is drained into a drainage ditch (8) in the comprehensive pipe rack;

(2) the filtering water suction pump (5) is started, and the gas compression device (13) is started at the same time, so that the gas compression device (13) sprays low-temperature high-pressure water-insoluble gas into the soil body outside the comprehensive pipe gallery body through the low-temperature compressed gas jet holes (4);

(3) when the pore pressure sensor (2) measures that the pore water pressure value of the surrounding soil body is reduced to be consistent with the pore water pressure value before the earthquake in the process of removing the pore water of the surrounding soil body, the hyperstatic pore water pressure is judged to be completely dissipated, the soil body liquefaction danger is removed, and the filtering water suction pump (5) and the gas compression device (13) are closed;

(4) in the process of removing the pore water of the surrounding soil body, the pore pressure sensor (2) measures to obtain that the hyperstatic pore water pressure of the surrounding soil body is still continuously increased, and the hyperstatic pore water pressure generated by vibration cannot be removed by the filtering water suction pump (5) alone, at the moment, a liquid nitrogen storage device (15) is started to enable liquid nitrogen to circularly flow along a liquid nitrogen circulating pipeline (14), and the water in the surrounding soil body is frozen into ice;

(5) consider that the earthquake probably leads to the inside conflagration that breaks out of pipe rack, consequently, adopt air temperature and humidity light sensor (7) real-time supervision utility tunnel body inside humiture, when the inside conflagration that breaks out of utility tunnel body, air temperature and humidity light sensor (7) transmission signal gives high-pressure water mist fire extinguishing systems (10), and high-pressure water mist fire extinguishing systems (10) are opened and are put out a fire.

10. The application method of the anti-liquefaction and anti-floating underground comprehensive pipe gallery structure according to claim 9, characterized in that: in the step (5), the method for judging fire occurrence by the air temperature and humidity illumination sensor (7) is temperature rise type temperature alarm and temperature difference type temperature alarm, and the fire occurrence is judged by meeting any one of the conditions, specifically:

A. temperature rise type temperature alarm: when the ambient temperature rises to 60-85 ℃ at the speed of 0.5 ℃ per minute, the fire is judged to happen, and the air temperature and humidity illumination sensor (7) gives an alarm in time;

B. temperature difference type temperature alarm: when the ambient temperature rises to 22 ℃ lower than the original ambient temperature within one minute, the fire is judged to happen, and the air temperature and humidity illumination sensor (7) gives an alarm in time.

Technical Field

The invention relates to an anti-liquefaction and anti-floating underground comprehensive pipe gallery structure and an application method thereof, and belongs to the technical field of comprehensive pipe galleries.

Background

The utility tunnel integrates various municipal engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage and the like, is provided with a special access hole, a lifting hole and a monitoring system, and is an important infrastructure and an 'aorta' for guaranteeing urban operation. The underground comprehensive pipe gallery system not only solves the problem of urban traffic jam, but also greatly facilitates the maintenance and overhaul of municipal facilities such as electric power, communication, gas, water supply and drainage and the like, avoids the influence and interference on traffic and resident trip caused by frequent excavation of roads by laying and maintaining underground pipelines, reduces the cost for repeated overhaul of the road surface and the maintenance cost of engineering pipelines, keeps the integrity of the road surface and the durability of various pipelines, and is convenient for the laying, increasing, decreasing, maintaining and daily management of various pipelines.

The utility tunnel length is longer, often can pass through saturated sand and soil layer. Under the action of earthquake load, the saturated sand layer is easy to liquefy, so that the comprehensive pipe gallery floats upwards, and serious economic and property loss is caused. The traditional anti-liquefaction treatment means is not completely suitable for a long and narrow underground pipe gallery, and although researchers research a lot of methods and measures for preventing soil liquefaction and preventing the comprehensive pipe gallery from floating upwards, the application in practical engineering is less, and a comprehensive pipe gallery structure which can be suitable for a liquefiable soil body is lacked.

Underground utility tunnel based on conventional can't realize independently resisting liquefaction and prevent the come-up. Therefore, it is necessary to develop an underground utility tunnel structure for preventing liquefaction and floating so as to meet the safety requirements of the underground utility tunnel.

Disclosure of Invention

The invention aims to solve the technical problem of providing an anti-liquefaction and anti-floating underground comprehensive pipe gallery structure and an application method thereof aiming at the defects of the prior art.

The technical scheme provided by the invention for solving the technical problems is as follows: the utility model provides an anti liquefaction prevents utility tunnel structure of come-up, including square tubular utility tunnel body, the filtration mechanism that absorbs water, cooling body and jet-propelled mechanism, the upper surface of utility tunnel body inlays and is equipped with the pore pressure sensor, the filtration mechanism that absorbs water sets up and is used for getting rid of soil body pore water on every side on the lateral wall of utility tunnel body, cooling body sets up and is used for freezing into ice with the moisture in the soil body on every side on the lateral wall of utility tunnel body, jet-propelled mechanism sets up and is used for spraying the insoluble gas of low temperature high pressure at the top of utility tunnel body.

The improvement of the technical scheme is as follows: comprehensive pipe gallery body upper end bilateral symmetry outwards extends has the overhanging edge of a wing that flies for increase the anti buoyancy of pipe gallery.

The improvement of the technical scheme is as follows: both sides of the lower end of the comprehensive pipe gallery body are symmetrically provided with flat-plate-shaped anti-floating wing plates.

The improvement of the technical scheme is as follows: filtration water absorption mechanism is including filtering suction pump and drainage pipe, filters the suction pump setting at utility tunnel body width direction both ends lateral wall surface, filters the suction pump and sets up along the even interval of utility tunnel body length direction, and drainage pipe inlays to be established in utility tunnel body width direction both ends lateral wall, filters suction pump and drainage pipe intercommunication setting, and the inside bottom surface of utility tunnel body is close to drainage pipe department and has seted up the escape canal, and the escape canal sets up along utility tunnel body length direction.

The improvement of the technical scheme is as follows: cooling body includes liquid nitrogen storage device and liquid nitrogen circulating line, and liquid nitrogen circulating line inlays to be established at utility tunnel body width direction both ends lateral wall surface, and liquid nitrogen circulating line's length direction and the length direction parallel arrangement of utility tunnel body, liquid nitrogen storage device and liquid nitrogen circulating line intercommunication form the return circuit.

The improvement of the technical scheme is as follows: jet-propelled mechanism includes compressed gas pipeline and gas compression device, and the even interval of upper surface of utility tunnel body has seted up low temperature compressed gas fumarole, and the compressed gas pipeline inlays to be established in utility tunnel body upper end, and gas compression device and compressed gas pipeline intercommunication set up, and the compressed gas pipeline sets up with low temperature compressed gas fumarole intercommunication respectively.

The improvement of the technical scheme is as follows: the inside lateral wall of utility tunnel body is provided with air temperature and humidity light sensor, and the inside top surface of utility tunnel body is provided with the thin water smoke fire extinguishing systems of high pressure.

The improvement of the technical scheme is as follows: hole pressure sensor parcel has the protective housing, and the vertical partition wall in inside of utility tunnel body is equipped with.

The application method of the anti-liquefaction and anti-floating underground comprehensive pipe gallery structure comprises the following steps:

(1) measuring the hyperstatic pore water pressure of the soil body around the comprehensive pipe gallery body through a pore pressure sensor, and if the hyperstatic pore water pressure reaches a threshold value, setting the threshold value to be gamma '× h (kPa), wherein h and gamma' are the buried depth (unit m) at the top of the pipe gallery and the floating weight (unit kN/m3) of the overlying soil body respectively, starting a filtering water suction pump on the side wall of the comprehensive pipe gallery body to remove the hyperstatic pore water pressure of the surrounding soil body, and sucking the pore water in the surrounding soil body into a drainage pipeline and draining the pore water into a drainage ditch inside the comprehensive pipe gallery;

(2) the gas compression device is started while the filtering water suction pump is started, and low-temperature high-pressure water-insoluble gas is sprayed into the soil body outside the comprehensive pipe rack body through the low-temperature compressed gas spraying holes, so that the saturation of the soil body around the pipe rack is reduced, and the purpose of reducing the liquefaction potential of the nearby soil body is achieved;

(3) when the pore pressure sensor measures that the hyperstatic pore water pressure value of the surrounding soil body is reduced to be consistent with the pore water pressure value before the earthquake in the process of removing the pore water of the surrounding soil body, the hyperstatic pore water pressure is judged to be completely dissipated, the soil body liquefaction danger is removed, and the filtering water suction pump and the gas compression device are closed;

(4) when the pore pressure sensor measures that the hyperstatic pore water pressure of the surrounding soil body is still continuously increased in the process of removing the pore water of the surrounding soil body, the hyperstatic pore water pressure generated by vibration cannot be removed through the filtering water suction pump alone, and at the moment, the liquid nitrogen storage device is started to enable liquid nitrogen to circularly flow along the liquid nitrogen circulating pipeline, so that the water in the surrounding soil body is frozen into ice, and the purpose of resisting liquefaction is achieved;

(5) consider that the earthquake probably leads to the inside conflagration that breaks out of piping lane, consequently, adopt the inside humiture of air temperature and humidity light sensor real-time supervision utility tunnel body, when the inside conflagration that breaks out of utility tunnel body, air temperature and humidity light sensor transmission signal gives high-pressure water mist fire extinguishing systems, and high-pressure water mist fire extinguishing systems opens and puts out a fire.

The improvement of the technical scheme is as follows: in the step (5), the method for judging fire occurrence by the air temperature and humidity illumination sensor is temperature rise type temperature alarm and temperature difference type temperature alarm, and the method for judging fire occurrence by meeting any one condition is specifically as follows:

A. temperature rise type temperature alarm: when the ambient temperature rises to 60-85 ℃ at the speed of 0.5 ℃ per minute, the fire is judged to happen, and the air temperature and humidity illumination sensor gives an alarm in time;

B. temperature difference type temperature alarm: when the ambient temperature rises to 22 ℃ lower than the original ambient temperature within one minute, the fire is judged to happen, and the air temperature and humidity illumination sensor gives an alarm in time.

The invention adopts the technical scheme that the method has the beneficial effects that:

(1) when the anti-liquefaction and anti-floating underground comprehensive pipe gallery structure is in an earthquake, the pore pressure sensor can quickly find the change of the water content of the surrounding soil body, if the soil body is about to liquefy, the pore water of the surrounding soil body can be extracted through the filtering water suction pump, the hyperstatic pore water pressure of the soil body is reduced, and the liquefying condition of the soil body is reduced, so that the comprehensive pipe gallery is prevented from floating, meanwhile, the pore water extracted by the filtering water suction pump is discharged into a drainage ditch, the self weight of the comprehensive pipe gallery body is increased, and the floating of the comprehensive pipe gallery is further prevented;

(2) in the anti-liquefaction and anti-floating underground comprehensive pipe gallery structure, the low-temperature compressed gas jet holes can spray low-temperature high-pressure water-insoluble gas into the soil body outside the comprehensive pipe gallery body while the filtering water suction pump of the comprehensive pipe gallery body extracts pore water of the surrounding soil body, so that the saturation of the soil body is reduced, the aim of reducing the liquefaction potential of the nearby soil body is fulfilled, meanwhile, time is provided for the filtering water suction pump to play a role, and the anti-liquefaction capacity of the soil body around the pipe gallery is further improved, so that the floating of the comprehensive pipe gallery is prevented;

(3) in the anti-liquefaction and anti-floating underground comprehensive pipe gallery structure, when pore water of a surrounding soil body cannot be removed through the filtering water suction pump, the liquid nitrogen storage device is started to enable liquid nitrogen to circularly flow along the liquid nitrogen circulating pipeline, water in the soil body around the comprehensive pipe gallery is frozen into ice, and surrounding sandy soil is solidified to prevent sandy soil liquefaction, so that floating of the comprehensive pipe gallery is prevented;

(4) in the anti-liquefaction and anti-floating underground comprehensive pipe gallery structure, the overhanging flange and the anti-floating wing plate structure increase the soil pressure at the upper part of the comprehensive pipe gallery body by increasing the soil bearing area of the comprehensive pipe gallery body, so that the anti-floating capacity of the comprehensive pipe gallery body is improved;

(5) according to the anti-liquefaction anti-floating underground comprehensive pipe gallery structure, the temperature and humidity inside the comprehensive pipe gallery body can be monitored in real time through the air temperature and humidity illumination sensor, when a fire disaster occurs inside the comprehensive pipe gallery body, a signal can be transmitted to start the high-pressure water mist fire extinguishing system inside the comprehensive pipe gallery body, the fire disaster inside the pipe gallery is effectively prevented under the action of an earthquake, and the safety requirement of the underground comprehensive pipe gallery is met.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of a liquefaction resistant and float resistant underground utility tunnel structure according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a top view of a liquefaction resistant and float resistant underground utility tunnel structure according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an elevational view of a liquefaction resistant and float resistant underground utility tunnel structure according to an embodiment of the invention;

FIG. 4 is a schematic structural diagram of an air injection mechanism of an anti-liquefaction and anti-floating underground comprehensive pipe gallery structure in an embodiment of the invention;

FIG. 5 is a schematic structural view of a cooling mechanism of an anti-liquefaction and anti-floating underground utility tunnel structure according to an embodiment of the invention;

wherein: 1. an overhanging flange; 2. a pore pressure sensor; 3. a protective shell; 4. low temperature compressed gas fumaroles; 5. a filtration water suction pump; 6. a water discharge pipeline; 7. an air temperature and humidity illumination sensor; 8. a drainage ditch; 9. a compressed gas conduit; 10. a high pressure water mist fire suppression system; 11. a middle partition wall; 12. anti-floating wing plates; 13. a gas compression device; 14. a liquid nitrogen circulation pipeline; 15. and a liquid nitrogen storage device.

Detailed Description

Examples

The utility tunnel structure of anti come-up is prevented in liquefaction of this embodiment, as shown in fig. 1-5, including square tubular utility tunnel body, the filtration mechanism that absorbs water, cooling body and jet-propelled mechanism, the upper surface of utility tunnel body inlays and is equipped with pore pressure sensor 2, the filtration mechanism that absorbs water sets up and is used for getting rid of soil body pore water on every side on the lateral wall of utility tunnel body, cooling body sets up and is used for freezing the moisture in the soil body on every side on the lateral wall of utility tunnel body and freezes into ice, jet-propelled mechanism sets up and is used for spraying the insoluble gas of low temperature high pressure at the top of utility tunnel body. The hole pressure sensor 2 wraps the protective shell 3, and the middle partition wall 11 is vertically arranged in the comprehensive pipe gallery body.

The utility tunnel structure of come-up is prevented in anti liquefaction of this embodiment, as shown in fig. 1, utility tunnel body upper end bilateral symmetry outwards extends has winged overhanging flange 1 for increase the anti buoyancy of piping lane. Two sides of the lower end of the comprehensive pipe gallery body are symmetrically provided with flat anti-floating wing plates 12.

In the utility tunnel structure of come-up is prevented in anti liquefaction of this embodiment, it includes filtration water absorption pump 5 and drainage pipe 6 to filter water absorption mechanism, filtration water absorption pump 5 sets up at utility tunnel body width direction both ends lateral wall surface, filtration water absorption pump 5 sets up along the even interval of utility tunnel body length direction, drainage pipe 6 inlays to be established in utility tunnel body width direction both ends lateral wall, filtration water absorption pump 5 sets up with drainage pipe 6 intercommunication, drainage ditch 8 has been seted up near drainage pipe 5 departments in the inside bottom surface of utility tunnel body, drainage ditch 8 sets up along utility tunnel body length direction. Cooling body includes liquid nitrogen storage device 15 and liquid nitrogen circulating line 14, and liquid nitrogen circulating line 14 inlays and establishes at utility tunnel body width direction both ends lateral wall surface, and the length direction of liquid nitrogen circulating line 14 and the length direction parallel arrangement of utility tunnel body, liquid nitrogen storage device 15 and liquid nitrogen circulating line 14 intercommunication form the return circuit. Jet-propelled mechanism includes compressed gas pipeline 9 and gas compression device 13, and low temperature compressed gas fumarole 4 has been seted up at the even interval of upper surface of utility tunnel body, and compressed gas pipeline 9 inlays to be established in utility tunnel body upper end, and gas compression device 13 sets up with compressed gas pipeline 9 intercommunication, and compressed gas pipeline 9 sets up with low temperature compressed gas fumarole 4 intercommunication respectively.

In the utility tunnel structure of anti liquefaction upward-floating of this embodiment, the inside lateral wall of utility tunnel body is provided with air temperature and humidity light sensor 7, and the inside top surface of utility tunnel body is provided with high-pressure water mist fire extinguishing system 10.

The application method of the underground comprehensive pipe gallery structure comprises the following steps:

(1) measuring the hyperstatic pore water pressure of the soil body around the comprehensive pipe gallery body through a pore pressure sensor 2, and if the hyperstatic pore water pressure reaches a threshold value, setting the threshold value to be gamma '× h (kpa), wherein h and gamma' are respectively a buried depth unit m at the top of the pipe gallery and an overlying soil body floating weight unit kN/m3, starting a filtering water suction pump 5 on the side wall of the comprehensive pipe gallery body to remove the hyperstatic pore water pressure of the surrounding soil body, sucking the pore water in the surrounding soil body into a drainage pipeline 6 and discharging the pore water into a drainage ditch 8 in the comprehensive pipe gallery, increasing the dead weight of the comprehensive pipe gallery body while reducing the hyperstatic pore water pressure of the external soil body, and preventing the pipe gallery from floating;

(2) the filtration water suction pump 5 is started, the gas compression device 13 sprays low-temperature high-pressure water-insoluble gas into soil outside the comprehensive pipe rack body through the low-temperature compressed gas jet holes 4, the saturation of the soil around the pipe rack is reduced, and the purpose of reducing the liquefaction potential of the soil nearby is achieved;

(3) when the pore pressure sensor 2 measures that the pore water pressure value of the surrounding soil body is reduced to be consistent with the pore water pressure value before the earthquake in the process of removing the pore water of the surrounding soil body, the hyperstatic pore water pressure is judged to be completely dissipated, the soil body liquefaction danger is removed, and the filtering water suction pump 5 and the gas compression device 13 are closed;

(4) in the process of removing the pore water of the surrounding soil body, the pore pressure sensor 2 measures that the hyperstatic pore water pressure of the surrounding soil body is still continuously increased, and the hyperstatic pore water pressure generated by vibration cannot be removed by the filtering water suction pump 5 alone, at the moment, the liquid nitrogen storage device 15 is started, so that the liquid nitrogen circularly flows along the liquid nitrogen circulating pipeline 14, the water in the surrounding soil body is frozen into ice, and the surrounding sandy soil is solidified to achieve the purpose of resisting liquefaction; as the earthquake time is short, the drainage can be directly determined as long as the hyperstatic pore water pressure of the soil body is increased in the drainage process, and the drainage can not avoid liquefaction of the soil body;

(5) consider that the earthquake probably leads to the inside conflagration that breaks out of pipe rack, consequently, adopt the inside humiture of air temperature and humidity illumination sensor 7 real-time supervision utility tunnel body, when the inside conflagration that breaks out of utility tunnel body, air temperature and humidity illumination sensor 7 transmission signal gives high-pressure water mist fire extinguishing systems 10, and high-pressure water mist fire extinguishing systems 10 are opened and are put out a fire. The method for judging fire occurrence by the air temperature and humidity illumination sensor 7 is temperature rise type temperature alarm and temperature difference type temperature alarm, and the method meets any one of the conditions, namely, the method for judging fire occurrence specifically comprises the following steps:

A. temperature rise type temperature alarm: when the ambient temperature rises to 60-85 ℃ at the speed of 0.5 ℃ per minute, the fire is judged to happen, and the air temperature and humidity illumination sensor 7 gives an alarm in time;

B. temperature difference type temperature alarm: when the ambient temperature rises to 22 ℃ lower than the original ambient temperature within one minute, the fire is judged to happen, the air temperature and humidity illumination sensor 7 gives an alarm in time, namely, when the alarm condition occurs, the temperature suddenly rises and the alarm is given in time.

When the anti-liquefaction and anti-floating underground pipe gallery structure is in an earthquake, the pore pressure sensor can quickly find the change of the water content of the surrounding soil body, if the soil body is about to liquefy, the pore water of the surrounding soil body can be extracted through the filtering water suction pump, the water content of the soil body is reduced, and the condition that the soil body is liquefied is reduced, so that the floating of the pipe gallery is prevented, meanwhile, the pore water extracted by the filtering water suction pump is discharged into a drainage ditch, the self weight of a pipe gallery body is increased, and the floating of the pipe gallery is further prevented; the gas fumarole of low temperature compressed gas can spray the insoluble gas of low temperature high pressure in to the outside soil body of utility tunnel body when the filtration suction pump of utility tunnel body extracts soil body pore water on every side, reduces the water content of soil body, further prevents that the soil body from taking place the liquefaction to prevent the come-up of utility tunnel.

In the anti-liquefaction and anti-floating underground comprehensive pipe gallery structure, when pore water of a surrounding soil body cannot be removed through the filtering water suction pump, the liquid nitrogen storage device is started to enable liquid nitrogen to circularly flow along the liquid nitrogen circulating pipeline, so that water in the soil body around the comprehensive pipe gallery is frozen into ice, and sand around the comprehensive pipe gallery is solidified to prevent sand liquefaction, so that the comprehensive pipe gallery is prevented from floating; the overhanging edge of a wing and anti strake structure are through the area that increases the utility tunnel body and bear the soil body, and increase utility tunnel body upper portion soil body gravity has further improved the anti ability of floating of utility tunnel body.

In the utility tunnel structure of come-up is prevented in anti liquefaction of this embodiment, the inside humiture of utility tunnel body can real-time supervision by air temperature humidity light sensor, when the inside conflagration that breaks out of utility tunnel body, can transmit the signal and open this internal high-pressure water mist fire extinguishing systems 10 at the utility tunnel, effectively prevent the emergence of the inside conflagration of piping lane under the earthquake action, satisfied utility tunnel's safety need.

In the anti-liquefaction anti-floating underground comprehensive pipe gallery structure of this embodiment, the gas compression device 13 can adopt an air compressor, and the mountable liquid circulating pump is in order to realize that liquid nitrogen flows along the circulation of liquid nitrogen circulating pipe 14 among the liquid nitrogen storage device 15. The high pressure water mist fire suppression system 10 may be a high pressure water mist fire suppression system that is currently marketed. The air temperature and humidity illumination sensor 7 can adopt a sensor susceptible to an Internet of things, and the specific model is as follows: ISS-0121 air humiture illumination sensor, working voltage 12V, working current 0.5A.

The present invention is not limited to the above-described embodiments. All technical solutions formed by equivalent substitutions fall within the protection scope of the claims of the present invention.