阅读说明：本技术 顶管施工洞口防水加固结构及顶管施工洞口防水加固方法 (Jacking construction hole waterproofing reinforcement structure and jacking construction hole water proofing and reinforcing method ) 是由 吴纪东 光军伟 王明远 陈波 吴相云 李琪勇 张双梅 刘军 秦崇斌 蒋雪峰 周彬 于 2019-08-22 设计创作，主要内容包括：本发明公开了一种顶管施工洞口防水加固结构,包括通过螺栓固定连接在施工洞口周边的钢箱梁,钢箱梁的轴向内侧面固定连接有内阻水结构,钢箱梁的轴向外侧面固定连接有外阻水结构；内阻水结构与外阻水结构均包括有支撑板和与支撑板的内表面压接在一起的橡胶板；支撑板包括连接部分与阻水部分,连接部分与阻水部分的分界线位于钢箱梁的径向内表面；阻水部分的径向内端向施工洞口的轴向内向倾斜设置。本发明还公开了相应的顶管施工洞口防水加固方法。具有水压越大密封性越好的特性,防水性能优异。本发明便于监测施工洞口处的水位,便于进行抽水作业,能够封堵顶管与施工洞口之间的间隙,具有良好的推广应用价值。(The invention discloses a kind of jacking construction hole waterproofing reinforcement structures, including being bolted to connection the steel box-girder on construction hole periphery, the axially inner side face of steel box-girder is fixedly connected with interior stop water, and the axially external face of steel box-girder is fixedly connected with outer stop water；Interior stop water and outer stop water include support plate and the rubber slab that is crimped together with the inner surface of support plate；Support plate includes coupling part and blocks water part, and the line of demarcation of coupling part and the part that blocks water is located at the inner radial surface of steel box-girder；Block water part radial inner end to construction hole axial introversion be obliquely installed.The invention also discloses corresponding jacking construction hole water proofing and reinforcing methods.With the better characteristic of the bigger leakproofness of hydraulic pressure, waterproof performance is excellent.The present invention is convenient for operation of drawing water convenient for the water level at monitoring construction hole, and the gap that can block push pipe between hole of constructing has good application value.)

1. jacking construction hole waterproofing reinforcement structure is axial extroversion to be directed toward the axially external direction in construction hole, to be directed toward The direction for hole axially inner side of constructing is axial introversive；Radial distance between the pipeline outer wall of push pipe and the hole wall at hole of constructing It is H1 centimetres, surrounds main loop cavity between the pipeline outer wall of push pipe and the hole wall at hole of constructing；

It is characterized by comprising the steel box-girder of annular, steel box-girder is bolted to connection on construction hole periphery, steel box-girder Diameter of bore is identical as the construction diameter at hole；The axially inner side face of steel box-girder is fixedly connected with interior stop water, steel box-girder Axially external face is fixedly connected with outer stop water, the radial inner end of interior stop water and outer stop water with construction push pipe Outer wall connects；

Interior stop water and outer stop water include support plate and the rubber slab that is crimped together with the inner surface of support plate； Bolt passes through outer stop water, steel box-girder and interior stop water and penetrates the structure of the window at construction hole；Interior stop water and outer The support plate of stop water includes coupling part and the part that blocks water, and the line of demarcation of coupling part and the part that blocks water is located at steel box-girder Inner radial surface；Block water part radial inner end to construction hole axial introversion be obliquely installed, block water part and construction hole The angle α of mouth radial direction is greater than 5 degree and less than 20 degree；

Inner annular cavity is surrounded between interior stop water, outer stop water, steel box-girder and push pipe.

2. jacking construction hole waterproofing reinforcement structure according to claim 1, it is characterised in that: the support plate is along steel case Using any one of following two structure in the circumferential direction of beam:

The first structure is in the circumferential direction of steel box-girder for integral type ring structure；

Second of structure is that uniform intervals form multi-segment structure in the circumferential direction of steel box-girder, between adjacent two sections of support plates Spacing is 1-10 millimeters.

3. jacking construction hole waterproofing reinforcement structure according to claim 1, it is characterised in that: the top of steel box-girder is in It is respectively equipped with observation at portion and middle and lower part to draw water dual-purpose hole, observation dual-purpose hole one end of drawing water is connected and separately with inner annular cavity It is open at one end on the exposed face of steel box-girder, the observation at steel box-girder exposed face, which is drawn water, is equipped with the first plug in dual-purpose hole.

4. jacking construction hole waterproofing reinforcement structure according to claim 1, it is characterised in that: the coupling part and resistance The connection structure of water section is any one of following two structure:

The first is that coupling part is structure as a whole with the part that blocks water；

Second is that coupling part and the part that blocks water are hinged by hinge.

5. jacking construction hole waterproofing reinforcement structure according to any one of claim 1 to 4, it is characterised in that: construction Structure of the window side wall is equipped with middle buried water stop, and middle buried water stop separates with push pipe outer wall snap fit and by main loop cavity For inner annular cavity and outer annular cavity, it is respectively equipped in the construction structure of the window side wall at inner annular cavity and outer annular cavity The dual-purpose hole of pumping grouting, circumferential direction of the dual-purpose hole of pumping grouting along construction hole are evenly arranged with four groups；

The dual-purpose hole one end of pumping grouting is connected with main loop cavity and another end opening is in the axial appearance of structure of the window of constructing On face, the outer end in the dual-purpose hole of pumping grouting is connected with connector, and connector is connected with the second plug.

6. the jacking construction hole water proofing and reinforcing method carried out using jacking construction hole waterproofing reinforcement structure in claim 5, It is characterized in that sequentially including the following steps:

First step is installation steps；By interior stop water and outer stop water be respectively arranged at steel box-girder axially inner face and In axial external surface, outer stop water, steel box-girder and interior stop water are fixed on to the structure of the window at construction hole by bolt On；

Second step is jacking construction, and push pipe connects after heading into construction hole with interior stop water with outer stop water, forms two Road waterproof construction；

Third step is water level monitoring and operation of drawing water；

Staff from top to bottom successively opens each the first plug observed at dual-purpose hole of drawing water, and can determine after finding water for the first time Water level；The second plug is removed when water level is higher, one end of external drinking-water pipe is made to be connected with connector, makes the another of drinking-water pipe End connection suction pump, opens suction pump, the water in main loop cavity is extracted out；After the completion of drawing water, suction pump is closed, by drinking-water pipe It mutually separates, is being connect to the second plug of upper loading with connector.

7. jacking construction hole according to claim 6 water proofing and reinforcing method, it is characterised in that: in third step, also into The operation of drawing water of row inner annular cavity；After drawing water to main loop cavity, so that drinking-water pipe and observation dual-purpose hole of drawing water is connected, open Suction pump draws water to inner annular cavity.

8. jacking construction hole according to claim 6 water proofing and reinforcing method, it is characterised in that:

Sealing of hole operation is carried out after jacking construction, closure slurries are injected into main loop cavity by the dual-purpose hole of pumping grouting, is starched Liquid forms plugged zone after solidifying in main loop cavity.

Technical field

The present invention relates to the waterproof techniques in technical field of construction more particularly to jacking construction.

Background technique

Jacking construction is the main construction method of non-excavation underground pipeline construction, and this construction method does not need excavated pavement Layer, and can highway crossing, railway, rivers and creeks, above ground structure, underground structure and various underground utilities etc., have not Pollution environment, do not influence traffic, to earth formation destroy it is small, construction safety is reliable, the period is short, without transport and stack it is miscellaneous soil, The advantages that at low cost, social benefit and remarkable in economical benefits, thus be widely applied.

When jacking construction, need that construction hole is arranged at the jacking working face of active well, the diameter at hole of constructing is bigger Toroidal cavity is formed in the diameter of push pipe pipeline, thus between hole and push pipe pipeline.The intracorporal infiltration of soil or underground water Toroidal cavity is gradually flowed into, thus needs to take waterproof measure at hole.

Traditional hole waterproof measure is that rubber fastening band annular together is arranged between hole and push pipe pipeline.This Kind measure, good waterproof action can be played when hydraulic pressure is smaller；When hydraulic pressure at toroidal cavity is larger, rubber fastening band (water digs rubber fastening band upwards) can be turned down to outside hole in the presence of hydraulic pressure, made so that effective waterproof cannot be played With.

The distance of jacking construction is increasingly longer, and into toroidal cavity, the volume of the soil body of seepage flow is increasing, toroidal cavity Place is easier to collect more water and has biggish hydraulic pressure, thus needs to design a kind of effective hole waterproof construction.

In addition, during jacking construction, if it is possible to effectively check toroidal cavity in ponding situation, orderly will be annular Water in cavity emits, then can further avoid the negative effect of hole leak bring.

Finally, reducing the technology of the ponding at toroidal cavity has obvious actively meaning for the work of hole waterproof Justice, but only hole blocks water (waterproof) technology at present, is not reduced the technology of ponding.

Summary of the invention

The purpose of the present invention is to provide a kind of jacking construction hole waterproofing reinforcement structures, can play under larger hydraulic pressure Effective hole waterproof action.

To achieve the above object, the present invention provides a kind of jacking construction hole waterproofing reinforcement structures, to be directed toward construction hole The axially external direction of mouth is axial export-oriented, is axial introversive to be directed toward the direction for hole axially inner side of constructing；The pipeline of push pipe Radial distance between outer wall and the hole wall at hole of constructing is H1 centimetres, between the pipeline outer wall of push pipe and the hole wall at hole of constructing Surround main loop cavity；

Including annular steel box-girder, steel box-girder be bolted to connection construction hole periphery, the diameter of bore of steel box-girder with The diameter at construction hole is identical；The axially inner side face of steel box-girder is fixedly connected with interior stop water, the axially external face of steel box-girder It is fixedly connected with outer stop water, the radial inner end of interior stop water and outer stop water connects with the outer wall of construction push pipe；

Interior stop water and outer stop water include support plate and the rubber slab that is crimped together with the inner surface of support plate； Bolt passes through outer stop water, steel box-girder and interior stop water and penetrates the structure of the window at construction hole；Interior stop water and outer The support plate of stop water includes coupling part and the part that blocks water, and the line of demarcation of coupling part and the part that blocks water is located at steel box-girder Inner radial surface；Block water part radial inner end to construction hole axial introversion be obliquely installed, block water part and construction hole The angle α of mouth radial direction is greater than 5 degree and less than 20 degree；

Inner annular cavity is surrounded between interior stop water, outer stop water, steel box-girder and push pipe.

The support plate is in the circumferential direction of steel box-girder using any one of following two structure:

The first structure is in the circumferential direction of steel box-girder for integral type ring structure；

Second of structure is that uniform intervals form multi-segment structure in the circumferential direction of steel box-girder, between adjacent two sections of support plates Spacing is 1-10 millimeters.

It is respectively equipped with observation at the top and middle part of steel box-girder and middle and lower part to draw water dual-purpose hole, observation is drawn water dual-purpose hole one End is connected and another end opening is on the exposed face of steel box-girder with inner annular cavity, and the observation at steel box-girder exposed face draws water two With in hole be equipped with the first plug.

The connection structure of the coupling part and the part that blocks water is any one of following two structure:

The first is that coupling part is structure as a whole with the part that blocks water；

Second is that coupling part and the part that blocks water are hinged by hinge.

Structure of the window side wall of constructing is equipped with middle buried water stop, and middle buried water stop and push pipe outer wall snap fit will simultaneously be led Toroidal cavity is divided into inner annular cavity and outer annular cavity, the construction structure of the window side at inner annular cavity and outer annular cavity The dual-purpose hole of pumping grouting is respectively equipped in wall, circumferential direction of the dual-purpose hole of pumping grouting along construction hole is evenly arranged with four groups；

The dual-purpose hole one end of pumping grouting is connected with main loop cavity and another end opening is in the axial appearance of structure of the window of constructing On face, the outer end in the dual-purpose hole of pumping grouting is connected with connector, and connector is connected with the second plug.

The present invention also provides the jacking construction hole waterproofs for using above-mentioned jacking construction hole waterproofing reinforcement structure to carry out Reinforcement means sequentially includes the following steps:

First step is installation steps；By interior stop water and outer stop water be respectively arranged at steel box-girder axially inner face and In axial external surface, outer stop water, steel box-girder and interior stop water are fixed on to the structure of the window at construction hole by bolt On；

Second step is jacking construction, and push pipe connects after heading into construction hole with interior stop water with outer stop water, forms two Road waterproof construction；

Third step is water level monitoring and operation of drawing water；

Staff from top to bottom successively opens each the first plug observed at dual-purpose hole of drawing water, and can determine after finding water for the first time Water level；The second plug is removed when water level is higher, one end of external drinking-water pipe is made to be connected with connector, makes the another of drinking-water pipe End connection suction pump, opens suction pump, the water in main loop cavity is extracted out；After the completion of drawing water, suction pump is closed, by drinking-water pipe It mutually separates, is being connect to the second plug of upper loading with connector.

In third step, the operation of drawing water of inner annular cavity is also carried out；After drawing water to main loop cavity, makes drinking-water pipe and see It examines dual-purpose hole of drawing water to be connected, opens suction pump and draw water to inner annular cavity.

Sealing of hole operation is carried out after jacking construction, injects closure slurry into main loop cavity by the dual-purpose hole of pumping grouting Liquid, slurries form plugged zone after solidifying in main loop cavity.

The present invention has the advantage that:

Waterproofing reinforcement structure of the invention and water proofing and reinforcing method, with the better characteristic of the bigger leakproofness of hydraulic pressure, waterproof performance It is excellent.The present invention convenient for monitoring construction hole at water level, be convenient for operation of drawing water, can block push pipe and construction hole it Between gap (main loop cavity), have good application value.

The axially external of construction hole is directed toward in the direction of hydraulic pressure, and the axis at radial inner end to the construction hole of the part that blocks water is inside To being obliquely installed, the length for the part that blocks water in this way is naturally larger than H1 centimetres, and hydraulic pressure in the axial direction press when blocking water part by outside, with regard to nothing Method will block water partially digs outward, and the part that can only will block water is more tightly against on push pipe outer wall.Therefore the present invention can prevent Hydraulic pressure digs stop water outward, avoids therefore waterproof construction being made to fail.

If α is too small, α blocks water partially be easy by turned-out in the presence of hydraulic pressure；If α is excessive, a side Face blocks water part for too long and wastes material, and the part that on the other hand blocks water, which is easy inwardly to dig under the action of water buoyancy, to be come.α is big It in 5 degree and less than 20 degree, had not only prevented the turned-out folding of water from blocking water part, but also has prevented water fold inward from blocking water part, played reliably Waterproof action.

Interior stop water and outer stop water constitute twice stop water, enhance block-water effect.Support plate uses multistage Formula structure, production easy to process；Support plate uses integral type ring structure, is easily installed.

Observation draws water dual-purpose hole convenient for the water level in staff's monitoring inner annular cavity, and can be after connecting drinking-water pipe By the water extraction in inner annular cavity.

The setting in the dual-purpose hole of pumping grouting can infuse convenient for extracting the water in main loop cavity out into main loop cavity Slurry prevents construction hole percolating water.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of upper pipe working well；

Fig. 2 is the top view of Fig. 1；

Structural schematic diagram Fig. 3 of the invention when being support plate using multi-segment structure；

Fig. 4 is vertical schematic cross-sectional view of the invention；

Fig. 5 is the enlarged drawing in Fig. 4 at A.

Specific embodiment

As shown in Figures 1 to 5, jacking construction hole waterproofing reinforcement structure of the invention is axially external to be directed toward construction hole Direction be axial export-oriented, be axial introversive to be directed toward the direction of construction hole axially inner side；The pipeline outer wall of push pipe 9 and construction Radial distance between the hole wall at hole is H1 centimetres, surrounds main ring between the pipeline outer wall of push pipe 9 and the hole wall at hole of constructing Shape cavity；

Steel box-girder 1 including annular, steel box-girder 1 are fixedly connected on construction hole periphery by bolt 3, and the inner hole of steel box-girder 1 is straight Diameter is identical as the construction diameter at hole；The axially inner side face of steel box-girder 1 is fixedly connected with interior stop water, the axial direction of steel box-girder 1 Lateral surface is fixedly connected with outer stop water, the radial inner end of interior stop water and outer stop water and construction push pipe 9 it is outer Wall connects；

Interior stop water and outer stop water include support plate and the rubber slab that is crimped together with the inner surface of support plate 4；Bolt 3 passes through outer stop water, steel box-girder 1 and interior stop water and penetrates the structure of the window 7 at construction hole；Interior stop water Support plate with outer stop water includes coupling part 5 and the part 6 that blocks water, the line of demarcation position of coupling part 5 and the part 6 that blocks water In the inner radial surface of steel box-girder；Block water part 6 radial inner end to construction hole axial introversion be obliquely installed, block water part 6 are greater than 5 degree and less than 30 degree, preferably 15 degree with the angle α of construction hole radial direction.Rubber slab 4 is slightly longer than support plate, and edge is applied The radial direction at work hole, the radial inner end of the prominent support plate of the radial inner end of rubber slab 4, to guarantee rubber slab 4 more than support plate The tube wall of early contact push pipe 9.

When α is 30 degree, H1 is 10 centimetres, the length for the part 6 that blocks water is about 12 centimetres.

Inner annular cavity 11 is surrounded between interior stop water, outer stop water, steel box-girder 1 and push pipe 9.

Wherein, the support plate of interior stop water and outer stop water is all made of steel plate.

The axially external of construction hole is directed toward in the direction of hydraulic pressure, the axial direction of the radial inner end of the part 6 that blocks water to construction hole Introversion is obliquely installed, and the length for the part 6 that blocks water in this way is naturally larger than H1 centimetres (by being 10 centimetres), and outside is tight in the axial direction for hydraulic pressure When pressure drag water section 6, the part 6 that can not will just block water is dug outward, and the part 6 that can only will block water is more tightly against 9 outer wall of push pipe On.Therefore the present invention can prevent hydraulic pressure from digging stop water outward, avoid therefore waterproof construction being made to fail.

If α is too small, α block water in the presence of hydraulic pressure part 6 be easy by turned-out；If α is excessive, a side The face part 6 that blocks water by too long wastes material, and the part 6 that on the other hand blocks water, which is easy inwardly to dig under the action of water buoyancy, to be come.α It greater than 5 degree and less than 20 degree, had not only prevented the turned-out folding of water from blocking water part 6, but also has prevented water fold inward from blocking water part 6, playing can By ground waterproof action.

Interior stop water and outer stop water constitute twice stop water, enhance block-water effect.

The support plate is in the circumferential direction of steel box-girder 1 using any one of following two structure:

The first structure is in the circumferential direction of steel box-girder 1 for integral type ring structure；

Second of structure as shown in figure 3, be in the circumferential direction of steel box-girder 1 uniform intervals formed multi-segment structure, adjacent two sections Spacing between support plate is 1-10 millimeters.

Support plate uses multi-segment structure, production easy to process；Support plate uses integral type ring structure, is easily installed.

The connection structure of the coupling part and the part that blocks water is any one of following two structure:

The first is that coupling part is structure as a whole with the part that blocks water；

Second is that coupling part and the part that blocks water are hinged by hinge 8.

It is respectively equipped with observation at the top and middle part of steel box-girder 1 and middle and lower part to draw water dual-purpose hole 10, observation is drawn water dual-purpose 10 one end of hole is connected with inner annular cavity 11 and another end opening is on the exposed face of steel box-girder 1, at 1 exposed face of steel box-girder Observation is drawn water, and dual-purpose hole 10 is interior to be equipped with the first plug.

Plug and the hole wall for observing dual-purpose hole 10 of drawing water can be tight fit, be also possible to the connection of bolt 3.

Observation draws water dual-purpose hole 10 convenient for the water level in staff's monitoring inner annular cavity 11, and can draw water in connection The water in inner annular cavity 11 is extracted out after pipe.

Structure of the window side wall of constructing is equipped with middle buried water stop 2, and middle buried water stop 2 and 9 outer wall snap fit of push pipe are simultaneously Main loop cavity is divided into inner annular cavity 21 and outer annular cavity 22, applying at inner annular cavity 21 and outer annular cavity 22 The dual-purpose hole 12 of pumping grouting is respectively equipped in work structure of the window side wall, the dual-purpose hole 12 of pumping grouting is along the circumferential uniform of construction hole It is provided with four groups；Main loop cavity is divided into inner annular cavity 21 and outer annular cavity 22 by middle buried water stop 2, forms twice Sealing, the resistance for leaking the water inside construction structure of the window outward is more, reduces the hydraulic pressure at interior stop water, enhances The waterproof performance of construction structure of the window.

After the completion of jacking construction, at the dual-purpose hole 12 of pumping grouting at inner annular cavity 21 and outer annular cavity 22 The dual-purpose hole 12 of pumping grouting inject slightly expanded concrete into inner annular cavity 21 and outer annular cavity 22 and blocked.It blocks Afterwards, middle buried water stop 2 ensures structure as sealing.

During jacking construction, when buried water stop 2 turns down outward in the presence of hydraulic pressure in the middle, pass through outer ring sky The dual-purpose hole 12 of pumping grouting at chamber 22 provides certain grouting pressure into outer annular cavity 22, make middle buried water stop 2 to Returning turns to reset, and enhances sealing effect.

Dual-purpose 12 one end of hole of pumping grouting is connected with main loop cavity and another end opening is in the axis of structure of the window 7 of constructing In exterior surface, the outer end in the dual-purpose hole 12 of pumping grouting is connected with connector 13, and connector 13 is connected with the second plug.Plug is conventional Structure, the first plug and the second plug not shown.

The setting in the dual-purpose hole 12 of pumping grouting can be into main loop cavity convenient for extracting the water in main loop cavity out Slip casting prevents construction hole percolating water.

The invention also discloses the jacking construction hole waterproofs for using above-mentioned jacking construction hole waterproofing reinforcement structure to carry out Reinforcement means sequentially includes the following steps:

First step is installation steps；Interior stop water and outer stop water are respectively arranged to the axially inner face of steel box-girder 1 In axial external surface, outer stop water, steel box-girder 1 and interior stop water are fixed on to the hole at construction hole by bolt 3 In structure 7；

Second step is jacking construction, and push pipe 9 connects after heading into construction hole with interior stop water with outer stop water, forms two Road waterproof construction；When the hydraulic pressure in main loop cavity is larger, the part 6 that blocks water of interior stop water is outside in the presence of hydraulic pressure It presses against on 9 outer wall of push pipe；The hydraulic pressure the big to push up tighter herein, and sealing effect is better, and the present invention is made to have the bigger sealing of hydraulic pressure The better outstanding advantages of property.

Stop water enters inner annular cavity 11, the water in inner annular cavity 11 in water breakthrough in the main loop cavity of part Pressure is significantly smaller than main loop cavity, and outer stop water is always sealed the water (will not face higher hydraulic pressure) compared with low hydraulic pressure, Play good sealing function.

Third step is water level monitoring and operation of drawing water；

Staff from top to bottom successively opens each the first plug observed at dual-purpose hole 10 of drawing water, for the first time can be true after discovery water Determine water level；When water level higher (the half height as being more than construction hole), the second plug is removed, the one of external drinking-water pipe is made End is connected with connector 13, so that the other end of drinking-water pipe is connected suction pump, opens suction pump, the water in main loop cavity is taken out Out；After the completion of drawing water, close suction pump, drinking-water pipe is separated with 13 phase of connector, connect to the second plug of upper loading (be pressed into or It is threadedly coupled).

Waterproofing reinforcement structure of the invention and water proofing and reinforcing method, with the better characteristic of the bigger leakproofness of hydraulic pressure, waterproof It has excellent performance.

In third step, the operation of drawing water of inner annular cavity 11 is also carried out；After drawing water to main loop cavity, make drinking-water pipe with It observes dual-purpose hole 10 of drawing water to be connected, opens suction pump and draw water to inner annular cavity 11.

Sealing of hole operation is carried out after jacking construction, and closure slurry is injected into main loop cavity by the dual-purpose hole 12 of pumping grouting Liquid, slurries form plugged zone after solidifying in main loop cavity.

Closure can be the materials such as concrete or foaming agent with slurries.

Due to having blocked main loop cavity, the intracorporal shipwreck of soil is greatly improved with arriving at the opening at construction hole The waterproof performance at construction hole can realize construction in the long-term use process hole is non-maintaining and exempt to monitor, avoid constructing Percolating water at hole.

The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair It is bright to be described in detail, those skilled in the art should understand that: still the present invention can be modified or be waited With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention In sharp claimed range.