阅读说明：本技术 一种隧道内微震监测传感器保护装置及其使用方法 (Protection device for microseismic monitoring sensor in tunnel and use method thereof ) 是由 张治强 段文硕 唐烈先 于 2019-10-22 设计创作，主要内容包括：一种隧道内微震监测传感器保护装置及其使用方法,包括保护壳、内芯、阻碍卡、环状防伸缩条带、拉压钩,所述阻碍卡固定在保护壳中的一侧,环状防伸缩条带从保护壳的另一侧伸入,内芯限位于阻碍卡与环状防伸缩条带之间,在内芯的后端设有弯钩,传感器安装在内芯的前端。与现有的技术相比,本发明的有益效果是：本发明在保证监测效果的前提下,能够有效避免传感器因喷护造成损坏,同时该装置安装拆卸方便、快捷,无需专业人员,安装效率高；所需材料简单,且安装装置及传感器能重复回收使用,大大节约成本。(A protection device for a microseismic monitoring sensor in a tunnel and a using method of the protection device comprise a protective shell, an inner core, an obstruction card, an annular anti-stretching strip and a pulling and pressing hook, wherein the obstruction card is fixed on one side in the protective shell, the annular anti-stretching strip stretches into the protective shell from the other side, the inner core is limited between the obstruction card and the annular anti-stretching strip, a hook is arranged at the rear end of the inner core, and the sensor is installed at the front end of the inner core. Compared with the prior art, the invention has the beneficial effects that: on the premise of ensuring the monitoring effect, the invention can effectively avoid the damage of the sensor caused by spray protection, and meanwhile, the device is convenient and quick to install and disassemble, does not need professional personnel and has high installation efficiency; the required material is simple, and installation device and sensor can used repeatedly, practice thrift the cost greatly.)

1. The utility model provides a microseism monitoring sensor protection device in tunnel, its characterized in that includes protective housing, inner core, hinders the card, cyclic annular flexible strip, draws the pressure hook of preventing, hinder one side that the card was fixed in the protective housing, cyclic annular flexible strip of preventing stretches into from the opposite side of protective housing, and the inner core is spacing between hindering card and cyclic annular flexible strip of preventing, is equipped with the crotch at the rear end of inner core, and the sensor is installed at the front end of inner core.

2. The protection device for the microseismic monitoring sensor in the tunnel according to claim 1, wherein the inner core is a cylinder with two-stage diameter, the end with large diameter is matched with the inner diameter of the protection shell, the end with small diameter is provided with an external thread, the end surface of the end with small diameter is provided with an inner hexagonal groove, and a cap is screwed on the end surface of the end with small diameter.

3. The protection device for the in-tunnel microseismic monitoring sensor as recited in claim 1, wherein the protective shell comprises a protective cover A, a protective cover B and an anchoring piece, the protective cover A is screwed at one end of the protective shell, the protective cover B is screwed at the other end of the protective shell, and the anchoring piece is fixed at the outer side of the shell of the protective shell.

4. The protection device for the in-tunnel microseismic monitoring sensor as recited in claim 1, wherein the pulling and pressing hook comprises a hook head and a plurality of sections of hook rods, the hook head and the plurality of sections of hook rods are hinged with each other, and the hinged points are connected through screws and nuts.

5. A use method of the protection device for the microseismic monitoring sensor in the tunnel according to any one of the claims 1 to 4, which is characterized by comprising the following steps:

1) stretching in the protective shell from the bottom of the protective shell by using a pulling and pressing hook, pushing the inner core to the head of the protective shell, screwing a nut on one end of a bolt matched with the sensor, putting the nut into the inner hexagonal groove of the inner core, penetrating through the cap, screwing the cap on the external thread of the inner core, and fixing the bolt and the nut;

2) screwing the sensor on the bolt, hooking a hook at the rear end of the inner core by using a pulling and pressing hook, and pulling the inner core to a blocking position;

3) the annular anti-stretching strip is installed from the front end of the protective shell, a cable at the bottom of the sensor penetrates through the protective cover A, the protective cover A is screwed at the front end of the protective shell, the annular anti-stretching strip is in contact with the inner core, the inner core is fixed between the annular anti-stretching strip and the blocking card, and the sensor is fixed in the protective device.

6. The use method of the protection device for the tunnel microseismic monitoring sensor of claim 5 wherein the use method of the tension and compression hook comprises the following steps: loosening the screw and the nut, straightening the hook head and the sections of the hook rods, and fixing the straightened hook head and the sections of the hook rods by tightening the screw and the nut; after the screw and the nut are unscrewed, the pulling and pressing hook is folded and placed at the bottom of the protective shell, and the protective cover B is screwed on the protective shell.

Technical Field

The invention relates to the field of rock engineering, in particular to a protection device for a microseismic monitoring sensor in a tunnel and a using method thereof.

Background

In the working environment of tunnel TBM construction, the micro-seismic monitoring system needs to keep a short distance between a sensor and a tunnel face as much as possible in order to better receive a micro-seismic signal near the working face, and is influenced by the construction process, the position of the sensor after the installation is finished needs to be protected and reinforced by mortar spraying, the sensor is easily damaged in the spraying and protecting process, the normal operation of the micro-seismic monitoring system is influenced, the continuity and effectiveness of micro-seismic data cannot be guaranteed, and property loss caused by equipment is damaged.

Disclosure of Invention

The invention aims to provide a protection device for a microseismic monitoring sensor in a tunnel and a use method thereof, which can effectively avoid the damage of the sensor caused by spray protection on the premise of ensuring the monitoring effect, and meanwhile, the device is convenient and quick to mount and dismount, and the mounting device and the sensor can be repeatedly recycled, thereby greatly saving the cost.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a microseism monitoring sensor protection device in tunnel, includes protective housing, inner core, hinders the card, cyclic annular prevents flexible strip, draws the pressure hook, hinder one side that the card was fixed in the protective housing, cyclic annular prevents that flexible strip stretches into from the opposite side of protective housing, and the inner core is spacing in hindering the card and cyclic annular prevents between the flexible strip, is equipped with the crotch at the rear end of inner core, and the sensor is installed at the front end of inner core.

The inner core is a cylinder with two-stage diameters, one end with a large diameter is matched with the inner diameter of the protective shell, one end with a small diameter is provided with an external thread, the end face of one end with a small diameter is provided with an inner hexagonal groove, and the inner hexagonal groove is connected with a cap in a threaded mode.

The protective housing comprises a protective cover A, a protective cover B and an anchor sheet, wherein the protective cover A is in threaded connection with one end of the protective housing, the protective cover B is in threaded connection with the other end of the protective housing, and the anchor sheet is fixed to the outer side of the protective housing.

The tension and compression hook comprises a hook head and a plurality of sections of hook rods, the hook head is hinged with the plurality of sections of hook rods, and the hinged points are connected through screws and nuts.

A use method of a protection device of a microseismic monitoring sensor in a tunnel comprises the following steps:

1) stretching in the protective shell from the bottom of the protective shell by using a pulling and pressing hook, pushing the inner core to the head of the protective shell, screwing a nut on one end of a bolt matched with the sensor, putting the nut into the inner hexagonal groove of the inner core, penetrating through the cap, screwing the cap on the external thread of the inner core, and fixing the bolt and the nut;

2) screwing the sensor on the bolt, hooking a hook at the rear end of the inner core by using a pulling and pressing hook, and pulling the inner core to a blocking position;

3) the annular anti-stretching strip is installed from the front end of the protective shell, a cable at the bottom of the sensor penetrates through the protective cover A, the protective cover A is screwed at the front end of the protective shell, the annular anti-stretching strip is in contact with the inner core, the inner core is fixed between the annular anti-stretching strip and the blocking card, and the sensor is fixed in the protective device.

The use method of the pulling and pressing hook comprises the following steps: loosening the screw and the nut, straightening the hook head and the sections of the hook rods, and fixing the straightened hook head and the sections of the hook rods by tightening the screw and the nut; after the screw and the nut are unscrewed, the pulling and pressing hook is folded and placed at the bottom of the protective shell, and the protective cover B is screwed on the protective shell.

Compared with the prior art, the invention has the beneficial effects that:

on the premise of ensuring the monitoring effect, the invention can effectively avoid the damage of the sensor caused by spray protection, and meanwhile, the device is convenient and quick to install and disassemble, does not need professional personnel and has high installation efficiency; the required material is simple, and installation device and sensor can used repeatedly, practice thrift the cost greatly.

Drawings

Fig. 1 is a schematic structural diagram of a protection device for a microseismic monitoring sensor in a tunnel according to the present invention.

Fig. 2 is a schematic structural view of the tension/compression hook of the present invention.

Fig. 3 is a schematic view of the installation position of the protection device for the microseismic monitoring sensor in the tunnel according to the present invention.

In the figure: 1-protective shell; 2-protective cover A; 3-protective cover B; 4-an anchor tab; 5-inner core; 6-a nut; 7-hooking; 8-capping; 9-a sensor; 10-ring-shaped anti-telescoping strips; 11-cable wires; 12-a barrier card; 13-pulling and pressing the hook; 14-surrounding rock.

Detailed Description

The present invention will be described in detail below, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1-3, a protection device for a tunnel microseismic monitoring sensor comprises a protective shell 1, an inner core 5, a blocking card 12, an annular anti-stretching strip 10 and a pulling and pressing hook 13, wherein the blocking card 12 is fixed on one side of the protective shell 1, the annular anti-stretching strip 10 extends from the other side of the protective shell 1, the inner core 5 is limited between the blocking card 12 and the annular anti-stretching strip 10, a hook 7 is arranged at the rear end of the inner core 5, and a sensor 9 is arranged at the front end of the inner core 5.

The inner core 5 is a cylinder with two-stage diameters, one end with a large diameter is matched with the inner diameter of the protective shell 1, one end with a small diameter is provided with an external thread, the end face of one end with a small diameter is provided with an inner hexagonal groove, and the inner hexagonal groove is connected with a cap 8 in a threaded mode. The cap 8 is provided with a through hole having a diameter matching the diameter of the bolt to which the sensor 9 is attached.

The protective shell 1 comprises a protective cover A2, a protective cover B3 and an anchor piece 4, wherein the protective cover A2 is in threaded connection with one end of the protective shell 1, the protective cover B3 is in threaded connection with the other end of the protective shell 1, and the anchor piece 4 is fixed on the outer side of the protective shell 1. When the protective cover A2 is screwed, the annular anti-telescoping strip 10 is tightly pressed against the inner core 5, so that the inner core 5 is prevented from sliding to influence the work of the sensor 9.

The pull-press hook 13 comprises a hook head and a plurality of sections of hook rods, the hook head is hinged with the plurality of sections of hook rods, and the hinged points are connected through screws and nuts.

A use method of a protection device of a microseismic monitoring sensor in a tunnel comprises the following steps:

1) the pulling and pressing hook 13 is used for stretching into the protective shell 1 from the bottom, the inner core 5 is pushed to the head of the protective shell 1, a nut is screwed at one end of the bolt matched with the sensor 9, the nut is placed into the inner hexagonal groove of the inner core 5 and then penetrates through the cap 8, and the cap 8 is screwed on the external thread of the inner core 5 to fix the bolt and the nut.

The middle part of the inner core 5 is provided with an inner hexagonal groove, so that bolts and nuts with positive and negative threads can be freely replaced to adapt to the sensors 9 with threads in different directions, and the application range of the invention is wider.

2) The sensor 9 is screwed on the bolt, the hook 7 at the rear end of the inner core 5 is hooked by the pulling and pressing hook 13, and the inner core 5 is pulled to the position of the blocking clamp 12.

3) The annular anti-telescoping strip 10 is installed from the front end of the protective shell 1, the cable 11 at the bottom of the sensor 9 penetrates through the protective cover A2, the protective cover A2 is screwed at the front end of the protective shell 1, the annular anti-telescoping strip 10 is in contact with the inner core 5, the inner core 5 is fixed between the annular anti-telescoping strip 10 and the blocking card 12, and the fixing of the sensor 9 in the protective device is completed.

And (3) placing the protection device at a proper position, and connecting the anchoring sheet 4 with the cave wall rock mass by using an anchoring agent to complete the installation of the protection device.

When the sensor is disassembled, the anchoring agent is broken by using an iron hammer, the protection device is taken down, and then the sensor is taken down in the step opposite to the step of installing the sensor, so that the disassembly of the sensor is completed.

The use method of the pulling and pressing hook 13 comprises the following steps: loosening the screw and the nut, straightening the hook head and the sections of the hook rods, and fixing the straightened hook head and the sections of the hook rods by tightening the screw and the nut; after the screw and the nut are unscrewed, the pulling and pressing hook 13 is folded and placed at the bottom of the protective shell 1, and the protective cover B3 is screwed on the protective shell 1. The pulling and pressing hook 13 can be folded, so that the storage and the taking are convenient.

The protective shell 1, the inner core 5, the tension and compression hook 13 and the annular anti-telescoping strip 10 are all made of steel materials. The steel material is adopted, the processing and the manufacturing are simple and convenient, the manufacturing cost is low, the weight is light, the strength is high, and the steel material can continuously work in a high-temperature high-humidity environment.

The device of the invention can ensure that the sensor can smoothly receive the microseismic signal of the rock mass without influencing the waveform quality.