Accurate measurement device for underground fault activation slippage displacement

Abstract

The utility model discloses an underground fault activation slippage displacement accurate measuring device, which belongs to the technical field of mining disaster monitoring and is characterized by comprising a support, a rope winder with a damping device, a horizontal medium-length hole, a cylindrical hollow thin barrel, a steel wire rope with scales, a steel wire rope fixing bolt, a rectangular steel sheet, calipers and a slow rebound type spring group. Wherein one end of the steel wire rope is fixed on the rectangular steel sheet through the fixing bolt, the rectangular steel sheet is connected with the calipers, the other end of the steel wire rope is tightly wound on the rope winder, when a fault is dislocated, the steel wire rope is pulled, and the slippage displacement of the fault can be known through the change of numerical values on the steel wire rope. The device is suitable for underground severe environments such as high temperature, high pressure and high humidity, accurate measurement of fault activation slippage displacement is achieved, operation steps are simplified, measurement efficiency is improved, and measurement cost is reduced.

Description

Technical Field

[0001] The utility model discloses an underground fault activation slip displacement monitoring device, belonging to the technical field of mining disaster monitoring. Background Art

[0002] Faults are a common problem faced when entering deep mining. The existence of faults will change the stress distribution law of rock strata and the normal movement law of rock strata, making the stress distribution and movement of rock strata at the fault more complicated. The fault zone is located between the upper plate and the lower plate of the fault. Its strength is usually much smaller than that of the surrounding rock mass. When mining coal on the fault surface, it will cause the overlying rock strata to move, and it is easy to cause shear slip along the fault surface of the mining plate, causing fault activation. Every year, water inrush accidents and rock burst accidents caused by fault activation occur frequently, and there has been a trend of gradual growth in recent years. When fault activation reaches its limit, it will be accompanied by huge energy release, which will affect the construction progress at the least and cause casualties and economic losses at the worst. Therefore, it is necessary to monitor the slip displacement of the fault in order to make a correct judgment on the state of the fault.

[0003] The utility model discloses an underground fault activation slip displacement monitoring device. The device method is suitable for underground high temperature, high pressure, high humidity and other harsh environments, can measure the fault activation displacement, improve monitoring efficiency and reduce monitoring costs. Utility Model Content

[0004] The purpose of the utility model is to provide a monitoring device for the slip displacement of fault activation in a well. The utility model is characterized by comprising a bracket (1), a rope reel (2) with a damping device, a horizontal medium-deep hole (3), a cylindrical hollow thin barrel (4), a steel wire rope with a scale (5), a fixing bolt (6), a rectangular steel sheet (7), a caliper (8), and a slow rebound spring group (9); the horizontal medium-deep hole (3) is arranged in the observation chamber, wherein the medium-deep hole (3) passes through the fault surface for a certain distance; the bracket (1) is installed at the opening of the medium-deep hole (3) and keeps a certain distance from the opening to facilitate the installation of the rope reel (2); the rope reel (2) is installed on the bracket (1), wherein the steel wire rope with a scale (5) is tightly Wrapped around the rope reel (2); one end of the steel wire rope (5) passes through the cylindrical hollow thin barrel (4) and is fixed to one end of the rectangular steel sheet (7) by a bolt (6), wherein the cylindrical hollow thin barrel (4) is evenly distributed in the medium-deep hole (3) at a certain distance to ensure that the steel wire rope (5) will not be displaced significantly in the medium-deep hole (3), thereby affecting the monitoring result; the other end of the rectangular steel sheet (7) is fixed together with the caliper (8) and the slow rebound spring group (9), so that the caliper (8) can be placed in the specified position of the medium-deep hole (3) when it is not fully opened, and the two calipers (8) can be of the same shape and size.

[0005] The specific steps are as follows:

[0006] A: Horizontal medium-deep holes are arranged in the chamber, and the medium-deep holes pass through the fault plane for a certain distance;

[0007] B: Install the bracket at the opening of the medium-deep hole. The center of the bracket should be level with the opening and keep a certain distance to facilitate the installation of the rope reel.

[0008] C: Install the rope reel with the steel wire rope wound on the bracket, and pull out the steel wire rope with scale of roughly equal length from the rope reel according to the length of the medium and deep hole to be laid;

[0009] D: As needed, pass an appropriate number of cylindrical hollow thin barrels through the steel wire rope, adjust the distance between the cylindrical hollow thin barrels so that they are evenly distributed on the pulled steel wire rope, and simply fix the cylindrical hollow thin barrels to the steel wire rope, connect the steel wire rope to one end of the rectangular steel sheet, tighten the bolts, and install the other end of the rectangular steel sheet together with the caliper and the slow rebound spring assembly.

[0010] E: Squeeze the caliper inwards. When it is not fully opened, use an iron rod of suitable length to send the assembled device into the designated position of the medium-deep hole. When the caliper is fully opened, it will be stuck in the medium-deep hole (3). Then the rope reel can be adjusted to keep the wire rope in a taut state. At this point, the installation of a downhole fault activation slip displacement monitoring device is completed.

[0011] Beneficial effects of the utility model: The utility model is mainly used to monitor the activated slip displacement of underground faults, and can accurately measure the slip displacement of faults in harsh environments of high temperature, high humidity and high pressure, thereby simplifying the operating steps, improving the measurement efficiency and reducing the measurement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the specific implementation methods or device descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 This is a structural diagram of the device of the utility model;

[0014] Figure 2 This is the structure diagram of the device after the fault is activated;

[0015] Figure 3 From left to right, they are respectively a schematic diagram of the connection between the rectangular steel sheet and the caliper, a schematic diagram of the connection between the slow rebound spring group, and a schematic diagram of the connection between the rectangular steel sheet and the bolt;

[0016] Figure 4It is a structural diagram of a cylindrical hollow thin barrel device;

[0017] Figure 5 This is a structural diagram of the device connecting the bracket and the rope reel; DETAILED DESCRIPTION

[0018] The specific implementation method and process of the present invention are described below in conjunction with the accompanying drawings.

[0019] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , attached Figure 4 And attached Figure 5 A device for monitoring the slip displacement of fault activation in a well, the device mainly comprising: a support (1), a rope reel (2) with a damping device, a horizontal medium-deep hole (3), a cylindrical hollow thin barrel (4), a steel wire rope (5) with a scale, a steel wire rope fixing bolt (6), a rectangular steel sheet (7), a caliper (8), and a slow-rebound spring group (9); the horizontal medium-deep hole (3) is arranged in an observation chamber, wherein the medium-deep hole (3) passes through the fault surface for a certain distance; the support (1) is installed at the opening of the medium-deep hole (3), with the center thereof being flush with the opening and maintaining a certain distance to facilitate the installation of the rope reel (2); the rope reel (2) is installed on the support (1), and the A steel wire rope (5) with scales is tightly wound on a rope reel (2); one end of the steel wire rope (2) passes through a cylindrical hollow thin barrel (4) and is fixed to one end of a rectangular steel sheet (7) by a bolt (6), wherein the cylindrical hollow thin barrel (4) is evenly distributed in the medium-deep hole (3) at a certain distance to ensure that the steel wire rope (5) will not be displaced significantly in the medium-deep hole (3), thereby affecting the monitoring result; the other end of the rectangular steel sheet (7) is fixed together with a caliper (8) and a slow rebound spring group (9), so that the caliper (8) can be placed in a specified position of the medium-deep hole (3) when it is not fully opened, and the two calipers (8) can be of the same shape and size.

[0020] The specific steps are as follows:

[0021] A: Horizontal medium-deep holes are arranged in the chamber, and the medium-deep holes pass through the fault plane for a certain distance;

[0022] B: Install the bracket at the opening of the medium-deep hole. The center of the bracket should be level with the opening and keep a certain distance to facilitate the installation of the rope reel.

[0023] C: Install the rope reel with the steel wire rope wound on the bracket, and pull out the steel wire rope with scale of roughly equal length from the rope reel according to the length of the medium and deep hole to be laid;

[0024] D: As needed, pass an appropriate number of cylindrical hollow thin barrels through the steel wire rope, adjust the distance between the cylindrical hollow thin barrels so that they are evenly distributed on the pulled steel wire rope, and simply fix the cylindrical hollow thin barrels to the steel wire rope, connect the steel wire rope to one end of the rectangular steel sheet, tighten the bolts, and install the other end of the rectangular steel sheet together with the caliper and the slow rebound spring assembly.

[0025] E: Squeeze the caliper inwards. When it is not fully opened, use an iron rod of suitable length to send the assembled device into the designated position of the medium-deep hole. When the caliper is fully opened, it will be stuck in the medium-deep hole (3). Then the rope reel can be adjusted to keep the wire rope in a taut state. At this point, the installation of a downhole fault activation slip displacement monitoring device is completed.

Claims

1. An accurate measurement device for fault activation slip displacement in underground wells, characterized by: The invention comprises a bracket (1), a rope reel (2) with a damping device, a horizontal medium-deep hole (3), a cylindrical hollow thin barrel (4), a steel wire rope (5) with a scale, a steel wire rope fixing bolt (6), a rectangular steel sheet (7), a caliper (8), and a slow-rebound spring group (9); the horizontal medium-deep hole (3) is arranged in an observation chamber, wherein the medium-deep hole (3) passes through a fault plane for a certain distance; the bracket (1) is installed at the opening of the medium-deep hole (3), with the center thereof being flush with the opening and maintaining a certain distance to facilitate the installation of the rope reel (2); the rope reel (2) The device is mounted on a bracket (1), wherein a steel wire rope (5) with a scale is tightly wound on a rope reel (2); one end of the steel wire rope (5) passes through a cylindrical hollow thin barrel (4) and is fixed to one end of a rectangular steel sheet (7) through a steel wire rope fixing bolt (6), wherein the cylindrical hollow thin barrel (4) is evenly distributed in the medium-deep hole (3) at a certain distance, and the other end of the rectangular steel sheet (7) is fixed together with a caliper (8) and a slow rebound spring group (9), so that the caliper (8) can be placed in a specified position of the medium-deep hole (3) when it is not fully opened.

2. The downhole fault activation slip displacement accurate measurement device according to claim 1 is characterized by: A rope reel (2) is installed at a horizontal position of the opening of the medium-deep hole (3), and the steel wire rope (5) is tightly wound around the rope reel (2). The rope reel (2) is provided with a damping device to ensure that the steel wire rope is always in a taut state.

3. The downhole fault activation slip displacement accurate measurement device according to claim 1 is characterized by: The other end of the rectangular steel sheet (7) is mounted together with two calipers (8) of the same shape and size and a slow rebound spring assembly (9); after the calipers (8) are fully opened in the medium-deep hole (3), they are stuck in the medium-deep hole (3).

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