Rapid water coupling device for water-storage-free sound wave detection hole

Abstract

The invention provides a rapid water coupling device for a non-water-storage type sound wave detection hole, and aims to solve the problem of efficient water coupling of a sensor and a rock mass in rock mass loosening circle sound wave detection. The device is suitable for detecting upward holes in the side wall and the top of a roadway where water is difficult to store, rapid water coupling is achieved through the upper water plugging assembly, the lower water plugging assembly and the water pumping and injecting system, and detection efficiency and precision are remarkably improved. The device mainly comprises a water plugging system and a water pumping and injecting system. The water plugging system is composed of an upper water plugging assembly and a lower water plugging assembly and is fixed to the acoustic wave sensor through a rubber sleeve and a hose clamp, and water sealing of an acoustic wave receiving and transmitting area is achieved through tight contact of an annular elastic wall and a hole wall. The water pumping and injecting system comprises a water pumping and injecting pipe, a water pumping pipe, a pressure sensor connecting line, a water injecting switch, a water pumping switch, a water pump and the like and is used for controlling water injecting and pumping processes. The using method of the device is simple, firstly, the water plugging assembly is installed on the sonic sensor and connected with the water pumping and injecting system, then water is injected into the water plugging system through the water injecting switch until the preset pressure is reached, and then sonic detection is conducted. After detection is completed, water is pumped out through the water pumping switch, and detection of the next detection point is prepared. Compared with the prior art, the method has the advantages of high accuracy, low cost, simplicity and convenience in operation and high efficiency.

Description

Technical Field

[0001] The invention relates to the field of acoustic wave detection of rock mass loosening zones, in particular to a quick water coupling device for acoustic wave detection holes without water storage. Background Art

[0002] In the tunnel excavation project, whether mechanical excavation or drilling and blasting excavation is used, accurate detection of the loose zone of the tunnel surrounding rock is indispensable to ensure the safety of the surrounding rock structure. The core tool for this detection is the acoustic wave detector, which uses the propagation and reflection characteristics of sound waves in the medium to analyze the propagation time and waveform variation of sound waves to evaluate the loose area or crack distribution inside the surrounding rock. In field operations, the common detection process involves drilling holes at different positions on the tunnel wall, using the acoustic wave detection holes as carriers to monitor the changes in the propagation characteristics of the sound waves, thereby indirectly judging the damage state of the surrounding rock. It is worth noting that due to the natural uncoupling state between the acoustic wave sensor and the detection hole, achieving efficient coupling between the sensor and the rock mass has become a key step for successful detection. A common practice is to inject water into the hole to establish a continuous medium environment required for sound wave propagation. However, this is more convenient in the vertical hole at the bottom of the tunnel, because it is easy to store water and achieve rapid detection; in contrast, the parallel holes on the side walls (sides) of the tunnel and the top upward holes are difficult to maintain water levels, and the detection difficulty is significantly increased. In view of the above problems, the existing technology has proposed two main solutions: one is to use the overall plugging and water injection method of the sonic hole, and the other is to integrate the water bag with the sensor by designing a special sensor, and use the water bag to fit the hole wall tightly to achieve coupling. Although these methods have alleviated the detection difficulties of parallel holes and upward holes to a certain extent, they each have significant limitations. The former requires frequent repetition of the overall plugging and water injection operation, and each detection point in the hole needs to be processed separately, which is inefficient and cumbersome; the latter is not only expensive, but also because of the intervention of the water bag, an additional medium layer (bag) is introduced between the sonic transceiver and the rock mass, which significantly interferes with the propagation path of the sound wave, resulting in a decrease in the accuracy of the detection results. In view of this, it is particularly important to develop a sonic detection hole device that can achieve fast and efficient water coupling. This device is designed to optimize the detection process, reduce the operation steps and reduce the cost, while ensuring the clarity and integrity of the sound wave propagation path, so as to more quickly and accurately evaluate the damage state of the loose zone of the tunnel surrounding rock, and provide solid technical support for the safety and efficiency of the shaft and tunnel excavation project. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a quick water coupling device for acoustic wave detection holes without water storage, which solves the above problems.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A quick water coupling device for acoustic wave detection holes without water storage, specifically comprising:

[0006] X1. Water blocking system, including connecting pipe, rubber sleeve, throat clamp, circular plate, circular elastic wall, water pumping and injection port, constant pressure water outlet valve, long water pumping port, and pressure sensor;

[0007] X2. Water extraction and injection system, including water extraction and injection pipe, water extraction pipe, pressure sensor connecting line, water injection switch, water extraction switch, water extraction pump, pressure display screen, pressure conversion module, water stop valve, water inlet and outlet, water tank, water filling port, drain port, wires, and power socket.

[0008] Furthermore, the X1 comprises an upper water blocking component and a lower water blocking component, and the two components are connected by a connecting pipe to realize the water pumping and injection functions of the upper and lower components.

[0009] Furthermore, when in use, the rubber sleeve of X1 is sleeved on the non-transmitting and receiving area of ​​the acoustic wave sensor and is used in conjunction with the throat clamp to prevent the water injected into the transmitting and receiving area of ​​the acoustic wave sensor from being lost.

[0010] Furthermore, the circular elastic wall of X1 is made of rubber material, which, after swelling by water injection, comes into close contact with the hole wall and is used to seal the water injection space in the transmitting and receiving area of ​​the acoustic wave sensor.

[0011] Furthermore, the circular ring plate of X1 is made of polycarbonate material, and the outer edge of the circular ring and the circular ring elastic wall are glued to form a circular ring sealing space.

[0012] Furthermore, the water extraction and injection port of X1 is used for injecting and extracting water from the upper and lower water blocking components.

[0013] Furthermore, the constant pressure water outlet valve of X1 is located in the upper water blocking component. When the injection pressure of the upper water blocking and the lower water blocking exceeds the constant pressure value, it proves that the internal pressure of the upper water blocking and the lower water blocking meets the sealing requirements of the water injection space in the acoustic wave sensor transmitting and receiving area. At this time, the constant pressure water outlet valve will inject water into the water injection space until it is full.

[0014] Furthermore, the long water extraction port of X1 passes through the annular sealing area of ​​the lower water blocking assembly and is used to extract water from the water injection space in the acoustic wave sensor transceiver area.

[0015] Furthermore, the pressure sensor of X1 is an IEPE type resistance pressure sensor, which is located in the lower water plugging assembly and is used to monitor the overall water injection pressure of the water plugging system to prevent excessive water injection.

[0016] Furthermore, the water pumping and injection pipe of X2 realizes the functions of water injection and water extraction.

[0017] Furthermore, the water pumping pipe of X2 only realizes the water pumping function.

[0018] Furthermore, the pressure sensor connection line X2 is used for transmitting the pressure signal.

[0019] Furthermore, when the water injection switch of X2 is turned on, water starts to be injected into X1.

[0020] Furthermore, when the pumping switch of X2 is turned on, water starts to be pumped from X1.

[0021] Furthermore, the pressure conversion module of X2 is used to convert the electrical signal of the pressure sensor and output the pressure value to the pressure display screen. When the preset value is reached, it proves that the water blocking system is filled with water.

[0022] Furthermore, the water stop valve of X2 is used to prevent water backflow when the pumping and injection of water are stopped.

[0023] Furthermore, the water inlet and outlet of X2 are connected to the water tank, which is used for the water inlet and outlet when the water blocking system is pumping water.

[0024] Furthermore, the water filling port of X2 is used to replenish the water in the water tank.

[0025] Furthermore, the drain port of X2 is used to drain the water from the water tank after the detection is completed.

[0026] Furthermore, the X2 wire is used to supply power to the pressure conversion module and the water pump.

[0027] Furthermore, the power socket standard of X2 is IEC60320.

[0028] A method for using a quick water coupling device for a non-water storage type acoustic wave detection hole, the specific steps of which include:

[0029] S1. Put the upper and lower water blocking components in X1 on the non-transmitting and receiving area of ​​the acoustic sensor, leaving the transmitting and receiving area empty, and tighten the rubber sleeve with a hose clamp to prevent leakage;

[0030] S2. Use the connecting pipe in X1 to connect the upper and lower components so that the upper and lower water blocking components are connected;

[0031] S3, use the water pumping pipe and the water extraction pipe in X2 to connect the water pumping port and the long water extraction port in X1 respectively;

[0032] S4, use the pressure sensor connection line in X2 to connect the pressure sensor in X1;

[0033] S5, fill the water tank in X2 with water through the water filling port;

[0034] S6. Insert the connected acoustic wave sensor into the designated measuring point in the detection hole and prepare for detection;

[0035] S7, connect the power supply, close the water stop valve of the water pump in X2, open the water injection switch in X2, and start to inject water into X1;

[0036] S8, observe the pressure value on the pressure display screen in X2, and when it reaches the preset value, close the water stop valve of the water extraction and injection pipe in X2, close the water injection switch in X2, and start the acoustic wave detection;

[0037] S9, after the detection of the measuring point is completed, open the water injection pipe and the water stop valve of the water extraction pipe in X2, turn on the water extraction switch in X2, and extract the injected water;

[0038] S10. After the pumping is completed, turn off the pumping switch in X2, move the sonic sensor to the next measuring point in the hole, and repeat S7-S9 until the sonic hole detection is completed.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. The water bag coupling method in the prior art mainly couples the hole wall with the water bag, and introduces an additional medium layer (bag) between the acoustic wave transceiver and the rock mass, which significantly interferes with the propagation path of the sound wave, resulting in a decrease in the accuracy of the detection result. The present invention utilizes the water injection space sealed by the upper and lower water plugging components to directly couple the acoustic wave transceiver with the rock mass, greatly improving the detection accuracy and achieving accuracy.

[0041] 2. The prior art water bag coupling method mainly transforms the sensor structure to have a water bag component, which is relatively costly. The upper and lower water blocking components of the present invention can be adapted to ordinary acoustic wave test sensors, and there is no need to purchase separately modified acoustic wave sensors, which is economical.

[0042] 3. When testing the water bag coupling method of the prior art, the water bag of the sensor is easily scratched and leaks, which is difficult to replace by oneself and needs to be returned to the factory for repair, delaying the progress of the test. The circular elastic wall of the present invention has a smaller contact area with the hole wall, which reduces the probability of scratches and leaks. The upper and lower water blocking components are more economical, and multiple ones can be purchased and replaced on site by oneself, which is convenient and fast.

[0043] 4. The prior art method of plugging and filling the sonic hole as a whole requires re-plugging the hole each time the measuring point is changed, and water must be filled until the hole is full before measurement can be made, which is slow. The present invention uses a pumping and injection system and a water plugging system, which only needs to fill the sonic sensor receiving and transmitting area, and there is no need to plug the hole, so it is highly efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of a quick water coupling device for acoustic wave detection holes without water storage when used on site;

[0045] Figure 2 It is a schematic diagram of a water blocking component on a water blocking system of a quick water coupling device for an acoustic wave detection hole without water storage;

[0046] Figure 3 It is a front view of the water blocking component on the water blocking system of a quick water coupling device for acoustic wave detection holes without water storage;

[0047] Figure 4 It is a schematic diagram of the lower water blocking component of the water blocking system of a quick water coupling device for acoustic wave detection holes without water storage;

[0048] Figure 5 It is a front view of the lower water blocking component of the water blocking system of a quick water coupling device for a non-water storage type acoustic wave detection hole;

[0049] Figure 6 It is a schematic diagram of the interior of the upper and lower water blocking components of the water blocking system of a quick water coupling device for a non-water storage type acoustic wave detection hole;

[0050] Figure 7 It is a schematic diagram of a water pumping and injection system of a quick water coupling device for a non-water storage type acoustic wave detection hole;

[0051] Figure 8 It is a schematic diagram of the internal pumping and injection system of a quick water coupling device for acoustic wave detection holes without water storage;

[0052] In the figure: 001—tunnel surrounding rock; 002—sound wave detection hole; 003—sound wave sensor; 004—sound wave transmitting and receiving area; 005—push rod; 101—upper water blocking assembly; 102—lower water blocking assembly; 103—connecting pipe; 104—rubber sleeve; 105—throat clamp; 106—circular ring plate; 107—circular elastic wall; 108—water pumping and injection port; 109—constant pressure water outlet valve; 110—long water pumping port; 111—pressure Sensor; 200—water pumping and injection system; 201—water pumping and injection pipe; 202—water extraction pipe; 203—pressure sensor connection line; 204—water injection switch; 205—water extraction switch; 206—water extraction pump; 207—pressure display screen; 208—pressure conversion module; 209—water stop valve; 210—water inlet and outlet; 211—water tank; 212—water filling port; 213—drainage port; 214—electrical wires; 215—power socket. DETAILED DESCRIPTION

[0053] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. The specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0054] Example:

[0055] Before the sonic test, the sonic test hole 002 is drilled along the tunnel surrounding rock 001, and the drilled hole is blown to ensure that there is no drilling rock debris in the hole. When performing the sonic test, first, ensure that the sonic sensor 003 is in good working condition, take out the upper water blocking component 101 and the lower water blocking component 102 of the device, and carefully check its integrity, including whether the rubber sleeve 104, the annular elastic wall 107 and other components are intact. The upper water blocking component 101 and the lower water blocking component 102 are respectively placed in the non-transmitting and receiving area of ​​the sonic sensor 003 to ensure that the sonic wave transceiving area 004 is not blocked and the rubber sleeve 104 fits tightly with the sonic sensor 003. Use the throat clamp 105 to tighten the rubber sleeve 104 to ensure that no water leakage occurs during the water injection process. At the same time, check whether the throat clamp 105 is firm to prevent it from falling off in subsequent operations. Then, take out the connecting pipe 103, and insert the two ends of the connecting pipe 103 into the corresponding interfaces of the upper and lower water blocking components respectively to ensure that the connection is tight and stable. Gently shake the upper and lower water blocking components to check whether the connecting pipe 103 is loose or falls off to ensure its connectivity. Next, take out the water extraction and injection system 200, and connect the water extraction and injection pipe 201 and the water extraction pipe 202 to the water extraction and injection port 108 and the long water extraction port 110 in the lower water blocking component 102 respectively to ensure that the connection is tight and stable. At the same time, insert one end of the pressure sensor connecting line 203 into the interface of the pressure sensor 111 in the lower water blocking component 102 to ensure that the connection is tight and stable. Next, fill the water tank 211 in the water extraction and injection system 200 with water, extend the connected acoustic wave sensor 003 into the acoustic wave detection hole 002 to be detected, and adjust its position to ensure that the receiving and transmitting area is aligned with the detection point. Finally, connect the power supply and close the stop valve 209 of the water pumping pipe 202 to prevent water from flowing out of the water pumping pipe during the water injection process. Open the water injection switch 204 and start injecting water into the water blocking system. At the same time, observe the pressure value on the pressure display screen 207 to ensure that it gradually rises and reaches the preset value. When the pressure reaches the preset value, close the stop valve 209 and the water injection switch 204 of the water pumping and injection pipe 201 to stop the water injection operation. At this time, the water blocking system has achieved the required sealing effect, and the sound wave transceiver area 004 has been filled with water. After completing the water injection operation, start the sound wave detection immediately. After completing the sound wave detection of the current measuring point, it is necessary to open the stop valve 209 of the water pumping and injection pipe 201 and the water pumping pipe 202, as well as the water pumping switch 205, to extract the water injected into the water blocking system. At the same time, observe the pressure value on the pressure display screen 207 to ensure that it gradually decreases and reaches the zero value. When the pressure reaches the zero value, close the water pumping switch 205 to stop the water pumping operation. At this time, the water in the water blocking system has been drained, and the acoustic wave sensor 003 is gently moved to the next measuring point in the hole, and the above acoustic wave test steps are repeated until the detection of the entire acoustic wave detection hole 002 is completed.

[0056] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it should be understood that although this specification is described in accordance with the implementation mode, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A quick water coupling device for acoustic wave detection holes without water storage, characterized in that: It includes water blocking system and water pumping and injection system.

2. A quick water coupling device for a non-water storage type acoustic wave detection hole according to claim 1, wherein the water blocking system is characterized in that it is divided into upper and lower water blocking components, including: a connecting pipe for connecting the upper and lower water blocking components; a rubber sleeve, which is sleeved on the non-transmitting and receiving area of ​​the acoustic wave sensor and cooperates with the throat clamp to prevent water loss; an annular plate and an annular elastic wall, the annular elastic wall is made of rubber material, which is in close contact with the hole wall after expansion by water injection, and the annular plate and the annular elastic wall form an annular sealed space; a water pumping port, which is arranged on the upper and lower water blocking components for water injection and pumping; a constant pressure water outlet valve, which is located in the upper water blocking component, and when the injection pressure exceeds the constant pressure value, water is injected into the water injection space until it is full; a long water pumping port, which runs through the annular sealing area of ​​the lower water blocking component; a pressure sensor, which is an IEPE type resistance pressure sensor, which is located in the lower water blocking component for monitoring the water injection pressure.

3. According to the quick water coupling device of the non-water storage type acoustic wave detection hole described in claim 1, its water blocking system is characterized in that it includes: a water pumping and injection pipe and a water pumping pipe, which are used for water injection and water pumping respectively; a pressure sensor connecting line, which is used to transmit pressure signals; a water injection switch and a water pumping switch, which control water injection and water pumping respectively; a water pump, which is used to pump water; a pressure display screen and a pressure conversion module, the pressure conversion module is used to convert the electrical signal of the pressure sensor and output the pressure value to the pressure display screen; a water stop valve, which is used to prevent water backflow when the water pumping and injection are stopped; a water tank, which is connected to the water pumping and injection pipe and the water pumping pipe through the water inlet and outlet, and is used to store water; a water filling port and a water discharge port, which are used to add water to the water tank and discharge the water from the water tank respectively; electric wires and a power socket, the electric wires are used to power the pressure conversion module and the water pump, and the power socket standard is IEC60320.

4. A quick water coupling device for acoustic wave detection holes without water storage according to claim 1, characterized in that: The upper and lower water blocking components are connected through connecting pipes to realize the connection of water pumping and injection functions.

5. The non-water storage type acoustic wave detection hole quick water coupling device according to claim 1, characterized in that: The long water extraction port passes through the annular sealing area of ​​the lower water blocking component and is used to extract water from the water injection space in the acoustic wave sensor transceiver area.

6. A quick water coupling device for acoustic wave detection holes without water storage according to claim 1, characterized in that: After the annular elastic wall expands due to water injection, it comes into close contact with the hole wall and is used to seal the water injection space in the transmitting and receiving area of ​​the acoustic wave sensor.

7. A quick water coupling device for acoustic wave detection holes without water storage according to claim 1, characterized in that: The circular ring plate is made of polycarbonate material, and the outer edge of the circular ring is glued to the circular ring elastic wall to form a circular ring sealing space.

8. The non-water storage type acoustic wave detection hole quick water coupling device according to claim 1, characterized in that: The method of use includes the following steps: 1) putting the upper and lower water blocking components on the non-transmitting and receiving area of ​​the acoustic wave sensor, and tightening the rubber sleeve with a hose clamp; 2) using a connecting pipe to connect the upper and lower water blocking components; 3) connecting the water extraction and injection pipe and the water pumping pipe to the water extraction and injection port and the long water pumping port respectively; 4) connecting the pressure sensor connecting line; 5) adding water to the water tank; 6) extending the connected acoustic wave sensor into the designated measuring point in the detection hole; 7) connecting the power supply, closing the water stop valve of the water extraction pipe, and opening the water injection switch to stop the water; 8) observing the pressure value on the pressure display screen, and closing the water stop valve and the water injection switch of the water extraction and injection pipe after reaching the preset value, and performing acoustic wave detection; 9) after the detection is completed, opening the water stop valve of the water extraction and injection pipe and the water pumping pipe, and opening the water pumping switch to start pumping water; 10) After pumping, turn off the pumping switch, move the acoustic sensor to the next measuring point, and repeat steps 7)-9) until the test is completed.

Images