Mining micro-seismic monitoring sensor mounting structure

Abstract

The utility model relates to the technical field of micro-seismic sensors, and particularly discloses a mining micro-seismic monitoring sensor mounting structure which comprises a micro-seismic sensor, the micro-seismic sensor comprises a main body and a probe, and further comprises a mounting groove formed in the surface of a rock-soil layer and a mounting assembly clamped in the mounting groove. The end face of the installation assembly is flush with the groove face of the installation groove. The groove is formed in the inner bottom of the barrel, the clamping ring can slide in the groove and is used for clamping the main body, the pull rod is used for pulling the clamping ring to slide, and the free end of the pull rod penetrates through the barrel and is located on the upper surface of the barrel. According to the device, the problem that a traditional geophone mounting structure cannot be recycled and protected at the same time is solved.

Description

Technical Field

[0001] The present application relates to the technical field of microseismic sensors, and specifically discloses a microseismic monitoring sensor installation structure for mines. Background Art

[0002] Microseismic monitoring is a set of equipment and technology that evaluates the damage and safety status of the monitored object by monitoring the vibrations caused by rock mass fractures or other objects, thereby providing a basis for disaster prediction and control.

[0003] The entire process of rock deformation and destruction is almost always accompanied by the generation, expansion, friction, and energy accumulation of cracks, which release energy in the form of stress waves, thus generating microseismic events. The microseismic signals in the entire process contain a large amount of useful information about the stress, deformation, and destruction of the rock mass and the activity of rock cracks from the initial stage. By monitoring and analyzing microseismic events, the extent of rock mass damage can be inferred. The location and intensity of the event reflect the location and extent of deformation or destruction in the rock mass, and seismological methods can be used to predict, forecast, and warn the extent of rock mass damage. This technology has been widely used in monitoring and early warning of dynamic disasters such as rock bursts (impact ground pressure) and landslides;

[0004] It is mainly divided into three parts, namely sensors, data collectors, time synchronization, data communication, and servers;

[0005] The sensor converts formation motion (formation velocity or acceleration) into a measurable electrical signal;

[0006] The data logger is responsible for converting the analog electrical signals from the sensors into digital signals. Data can be recorded continuously or in a triggered mode, where a trigger algorithm is used to determine whether to record and transmit microseismic event data;

[0007] Microseismic sensors: also known as geophones, which need to be deployed in rock boreholes or on the rock surface, usually in rock boreholes;

[0008] The principle of the geophone: When the seismic wave reaches the observation point on the surface, the geophone housing and the magnet vibrate, and the coil lags behind the magnet due to inertia, forming a relative movement between the two. In this movement, the coil cuts the magnetic lines to generate an induced electromotive force, and outputs a current signal corresponding to the vibration cycle, which can be amplified by special instruments;

[0009] Regarding the installation of the detector, it is usually necessary to drill a hole in the rock surface and then put the detector in. This installation method has corresponding problems:

[0010] For example, in tunnels that use large vehicles for transportation, the tunnel support structure is often damaged by vehicle scratches. If the microseismic monitoring sensor is installed on the inner wall of the mine tunnel, it is easy to be scratched by construction machinery and cause damage to the sensor. Then, in order to avoid this situation, the detector is forcibly embedded in the rock hole. Although it can avoid damage by external forces, there is a problem that it cannot be removed, that is, it is difficult to recover. In view of this, the inventor proposes a microseismic monitoring sensor installation structure for mining. Utility Model Content

[0011] The utility model aims to solve the problem that the traditional installation structure of the detector cannot achieve both recovery and protection.

[0012] In order to achieve the above object, the utility model provides the following basic solutions:

[0013] A microseismic monitoring sensor installation structure for mining includes a microseismic sensor, the microseismic sensor includes a main body and a probe, and is characterized in that: it includes a mounting groove opened on the surface of a rock layer and a mounting component clamped in the mounting groove, and the end surface of the mounting component is kept flush with the groove surface of the mounting groove;

[0014] The installation assembly includes a cylinder, a groove opened at the bottom of the cylinder, a clamping ring that can slide in the groove and is used for clamping the main body, and a pull rod for pulling the clamping ring to slide. The free end of the pull rod passes through the cylinder and is located on the upper surface of the cylinder.

[0015] The principles and effects of this basic solution are:

[0016] 1. Compared with the prior art, the present device has a simple structure and an ingenious design. The core of the present structure is that it can protect the microseismic sensor from damage caused by the movement of external machinery, and can also realize the normal and convenient recovery of the microseismic sensor in the later stage. That is, the present structure solves the problem that the installation structure of the traditional detector cannot achieve both recovery and protection.

[0017] 2. Compared with the prior art, the present structure is provided with an installation assembly, which includes a cylinder, a groove opened at the bottom of the cylinder, a clamping ring that can slide in the groove for clamping the main body, and a pull rod for pulling the clamping ring to slide. The free end of the pull rod passes through the cylinder and is located on the upper surface of the cylinder. The movement of the clamping ring is utilized to realize the movement of the microseismic sensor inside the cylinder, so that the cylinder can protect the microseismic sensor. As for the cylinder, the end face of the installation assembly remains flush with the groove face of the installation groove. After remaining flush, the influence of the movement of the external machinery on the cylinder is reduced, thereby reducing the influence on the microseismic sensor.

[0018] 3. Compared with the prior art, the present device has an advantage in recycling. Since the end face of the assembly is kept flush with the groove surface of the installation groove, it is rather troublesome to keep it flush. However, the present structure is provided with a pull rod, the free end of which passes through the cylinder and is located on the upper surface of the cylinder. The movement of the pull rod is utilized to drive the microseismic sensor to move upward, so that the microseismic sensor is moved away from the cylinder, thereby realizing the reasonable and convenient removal of the microseismic sensor, and facilitating the subsequent reuse of the microseismic sensor.

[0019] Furthermore, the free end of the pull rod passes through the cylinder and a limit block is provided on the upper surface of the cylinder.

[0020] Furthermore, the size of the limit block is larger than the size of the pull rod.

[0021] Furthermore, the cylinder is evenly provided with an annular contact layer, and the annular contact layer is in contact with the inner layer of the rock and soil layer.

[0022] Furthermore, the inner wall of the cylinder is provided with a through hole for the pull rod to pass through. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the installation of a microseismic monitoring sensor for mining proposed in an embodiment of the present application is shown;

[0025] Figure 2 A schematic diagram of a structure of a microseismic monitoring sensor installation structure for mining proposed in an embodiment of the present application is shown;

[0026] Figure 3 The present invention shows a microseismic monitoring sensor installation structure for mining. Figure 2 A schematic diagram of the structure from another angle. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0028] The reference numerals in the drawings of the specification include: rock and soil layer 1, opening 2, cylinder 3, limit block 4, pull rod 5, clamping ring 6, main body 7, probe 8, groove 9.

[0029] Implementation example Figure 1 , Figure 2 and Figure 3 As shown:

[0030] A microseismic monitoring sensor installation structure for mining, comprising a microseismic sensor, wherein the microseismic sensor comprises a main body 7 and a probe 8, and comprises a mounting groove opened on the surface of a rock layer 1 and a mounting component clamped in the mounting groove, wherein the end surface of the mounting component is kept flush with the groove surface of the mounting groove;

[0031] The mounting assembly includes a cylinder 3, a groove 9 opened at the bottom of the cylinder 3, a clamping ring 6 that can slide in the groove 9 and is used to clamp the main body 7, and a pull rod 5 for pulling the clamping ring 6 to slide, and the free end of the pull rod 5 passes through the cylinder 3 and is located on the upper surface of the cylinder 3.

[0032] Specifically: the free end of the pull rod 5 passes through the cylinder 3 and a limit block 4 is provided on the upper surface of the cylinder 3 to prevent the pull rod 5 from continuously sliding downward. Therefore, the size of the limit block 4 is larger than the size of the pull rod 5, and a through hole for the pull rod 5 to pass through is opened on the inner wall of the cylinder 3. Similarly, the size of the limit block 4 is larger than the aperture of the through hole, and an annular contact layer is evenly opened on the cylinder 3, and the annular contact layer is in contact with the inner layer of the rock and soil layer 1.

[0033] Specific implementation process:

[0034] The first step is to open hole 2: the staff finds a suitable monitoring position, and then opens hole 2 on the surface of rock layer 1. The size of hole 2 depends on the model of microseismic sensor to be used. After opening hole 2, it is manually confirmed whether there is a risk of collapse in the opened hole. The confirmation method is: manual touch;

[0035] In the second step, the cylinder 3 is placed into the hole opened in the first step, and the annular contact layer on the inner wall of the cylinder 3 is used to form a base with the hole wall to achieve a snap connection with the hole wall;

[0036] The third step is to connect the microseismic sensor with the clamping ring 6 before the hole wall is connected. Then, the cylinder 3 is placed in the opening 2. Then, the limit block 4 is pressed to move the pull rod 5 downward, and the clamping ring 6 is pushed downward to insert the probe 8 into the rock layer 1. At this time, the height of the main body 7 is lower than the end face height of the cylinder 3.

[0037] The fourth step is about recycling after use. Use pliers or a holding tool to clamp the limit block 4, so that the limit block 4 moves upward, so that the main body 7 exceeds the upper surface of the cylinder 3, and then take out the main body 7, that is, the recycling of the main body 7 is completed. After the micro-seismic sensor is recovered, it will become more convenient to recycle the cylinder 3 because brute force can be used to forcibly remove the cylinder 3.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A microseismic monitoring sensor installation structure for mining, comprising a microseismic sensor, wherein the microseismic sensor comprises a main body and a probe, and is characterized in that: it comprises a mounting groove opened on the surface of a rock layer and a mounting assembly clamped in the mounting groove, and the end surface of the mounting assembly is kept flush with the groove surface of the mounting groove; The installation assembly includes a cylinder, a groove opened at the bottom of the cylinder, a clamping ring that can slide in the groove and is used for clamping the main body, and a pull rod for pulling the clamping ring to slide. The free end of the pull rod passes through the cylinder and is located on the upper surface of the cylinder.

2. A mine microseismic monitoring sensor installation structure according to claim 1, characterized in that: The free end of the pull rod passes through the cylinder and a limiting block is provided on the upper surface of the cylinder.

3. A mine microseismic monitoring sensor installation structure according to claim 2, characterized in that: The size of the limit block is larger than that of the pull rod.

4. A mine microseismic monitoring sensor installation structure according to claim 1, characterized in that: The cylinder is evenly provided with an annular contact layer, and the annular contact layer is in contact with the inner layer of the rock and soil layer.

5. The installation structure of a microseismic monitoring sensor for mining according to claim 1, characterized in that: The inner wall of the cylinder is provided with a through hole for the pull rod to pass through.

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