CN111964932B - Mine shaft deformation simulation experiment device - Google Patents

Abstract

The invention discloses a mine shaft deformation simulation experiment device, which comprises: the water storage barrel (1) is connected with a high-pressure water pump (4) through a water inlet pipe (3) of the water pump, and the high-pressure water pump (4) is connected with a water inlet (6) of a pressure pipe through a water outlet pipe (5) of the water pump; a pressurizing pipe (15) and a pressure relief pipe (16) are arranged on the base (14), and electromagnetic valve water valves (17) are respectively arranged on the pressurizing pipe (15) and the pressure relief pipe (16); a shaft (7) is detachably fixedly connected with a base (14), a telescopic high-pressure water hose (10) is installed on the shaft (7) and is respectively connected with a pressure pipe (15) and a pressure relief pipe (16), and an operating platform (2) controls the opening and closing of an electromagnetic valve (17) and the starting and stopping of a high-pressure water pump (4) to realize the pressure regulation in the telescopic high-pressure water hose (10). The invention can simulate the shaft stress of different stratum dividing layers and different geological conditions, realizes the arbitrary adjustment of the pressure in the telescopic high-pressure water belt, and has more accurate simulation effect.

Description

A mine shaft deformation simulation experiment device

technical field

The invention relates to a mine shaft deformation simulation experiment device, which belongs to the technical field of mine shaft deformation.

Background technique

With the continuous development and exhaustion of shallow mineral resources, the exploration and exploitation of deep mineral resources has become the strategic direction of my country's current mining development. With the surge of mining depth and lifting load, the geological conditions are more complex, and the mine pressure continues to increase, which makes the wellbore under increasing pressure and intensifies the risk of wellbore deformation. According to incomplete statistics, since the 1980s, more than 100 wells in my country's Huainan, Huaibei, Datun, Xuzhou, Yanzhou, Jining and other mining areas have been damaged to varying degrees. A common feature of these deformed wellbores is that the wellbore depth is large, and the topsoil thickness is hundreds of meters. Shaft deformation is extremely harmful to hoisting safety. It may destroy the normal state of the tank road and cause stuck tanks and loose ropes, which may damage wellbore facilities and hoisting equipment in light cases, and cause tank falling accidents in severe cases, resulting in heavy casualties. Coal mine production brings significant safety hazards.

The wellbore deformation mainly includes the tensile and compressive deformation of the wellbore along the axial direction, the deflection and bending of the wellbore centerline, the dislocation of the wellbore and the horizontal extrusion damage of the wellbore. Due to the difficulty in measuring the deformation of the wellbore in actual production, the heavy workload, the long time occupation of the wellbore and the delay in coal mine production, real-time condition monitoring cannot be realized. However, the deformation of the wellbore also causes the change of the state of the tank. The change of the state of the tank can reflect the deformation of the wellbore to a certain extent, and the monitoring of the state of the tank is much simpler than the deformation of the wellbore. It is of great significance to improve production efficiency and safety production. Monitoring the deformation of the wellbore through the state of the tank should grasp the form and mechanism of the state change of the tank caused by the deformation of the wellbore. Due to the limitations of the coal mine site safety and production conditions, the field experiment cannot be carried out. Therefore, an experimental device should be used to study the state of the tank caused by the deformation of the wellbore. mechanism of change. However, the existing experimental device only studies the wellbore deformation caused by the geological conditions, and has not considered the tank state change caused by the wellbore deformation, and cannot study the mechanism of the wellbore deformation leading to the tank state change. It is difficult, and there is a certain error with the actual wellbore force, which cannot accurately reflect the mechanism and state of the wellbore deformation and the tank deformation.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a mine shaft deformation simulation experiment device, which can accurately simulate the force and deformation of the mine shaft and reflect the effect of the state change of the tank caused by the shaft deformation. mechanism.

The present invention specifically adopts the following technical solutions to solve the above-mentioned technical problems:

A mine shaft deformation simulation experiment device, comprising: a water storage bucket, an operating table, a water pump inlet pipe, a high-pressure water pump, a water pump outlet pipe, a wellbore, a casing, a retractable high-pressure water belt, a water belt joint, a base, a pressure pipe, a drain Pressure pipe, solenoid valve water valve, in which the water storage tank is connected with the high-pressure water pump through the water pump inlet pipe, and the high-pressure water pump is connected with the water inlet of the pressure pipe through the water pump outlet pipe; the pressure pipe and the pressure relief pipe are installed on the base, and the pressure pipe The solenoid valve and water valve are respectively installed on the pressure relief pipe; the wellbore is detachably fixedly connected with the base, and a retractable high-pressure water belt is installed on the wellbore. The pipe is connected, and the tank beam and the tank are installed inside the wellbore; the casing covers the wellbore, and the bottom of the casing is detachably connected to the base; the water inlet of the pressurized pipe is connected with the pressurized pipe, and The pressure relief pipe is connected with the drain outlet of the pressure relief pipe; the operating table is electrically connected with the high-pressure water pump and the solenoid valve water valve respectively, so as to control the opening and closing of the solenoid valve water valve and the start and stop of the high-pressure water pump, so as to realize the scalable high-pressure water pump. In-band pressure regulation.

Further, as a preferred technical solution of the present invention, the wellbore is fixedly connected to the base by means of bolts and threaded holes.

Further, as a preferred technical solution of the present invention, the bottom of the casing is fixedly connected to the base by means of bolts and threaded holes.

Further, as a preferred technical solution of the present invention, the retractable high-pressure water belt is installed on the wellbore in sections.

Further, as a preferred technical solution of the present invention: the casing adopts a split type.

Further, as a preferred technical solution of the present invention, a partition plate is arranged in the casing.

Further, as a preferred technical solution of the present invention, a rubber pad is arranged on the partition.

The present invention adopts the above-mentioned technical scheme, and can produce the following technical effects:

In the device of the present invention, the force of the wellbore is applied by a retractable high-pressure water belt, which can simulate the force of the wellbore under different stratum segmentation layers and different geological conditions, and the retractable high-pressure water belt is connected with the pressure relief pipe and the pressurization pipe through the water belt joint. By controlling the solenoid valve water valve on the pressure pipe and the pressure relief pipe, the internal pressure of the retractable high-pressure water belt can be adjusted arbitrarily, and the horizontal pressure of the wellbore can be adjusted; and the segmented retractable high-pressure water belt can be adjusted. Different predetermined pressures are applied to achieve predetermined deformation, which makes the simulation effect more accurate; and the shell adopts a split type, which is easy to install; and a partition is set inside the shell, so that the whole or different sections of the retractable high-pressure water belt can act independently The force does not affect each other, and rubber pads of different thicknesses can be installed on the partition, which can realize the adjustment of the vertical additional force of different magnitudes on the wellbore, so that the force of the wellbore is more similar to the actual working conditions. The experimental device can accurately simulate the mechanism of wellbore deformation leading to the state change of the tank, as well as the deformation forms of the tank caused by different types of wellbore deformation, which provides a theoretical basis for monitoring the wellbore deformation through the tank and improves the safety of coal mine production. .

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the mine shaft deformation simulation experiment device of the present invention.

FIG. 2 is a schematic diagram of the structure of the wellbore and the water belt of the present invention.

FIG. 3 is a cross-sectional view of a wellbore and a water belt of the present invention.

FIG. 4 is a schematic diagram of the base structure of the present invention.

FIG. 5 is a top view of the base structure of the present invention.

FIG. 6 is a schematic diagram of the overall structure of the housing of the present invention.

FIG. 7 is a schematic diagram of the structure of one side of the casing of the present invention.

Explanation of the symbols in the accompanying drawings: 1. Water storage bucket; 2. Operating table; 3. Water pump inlet pipe; 4. High-pressure water pump; 5. Water pump outlet pipe; 6. Water inlet of pressurized pipe; 9. Drain outlet of pressure relief pipe; 10. Retractable high-pressure hose; 11. Hose joint; 12. Tank beam; 13. Tank tunnel; 14. Base; 15. Pressure pipe; 16. Pressure relief pipe; 17 , Solenoid valve water valve; 18, threaded hole 1; 19, threaded hole 2; 20, threaded hole 3; 21, partition.

Detailed ways

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in Figures 1 to 4, the present invention provides a mine shaft deformation simulation experiment device, which mainly includes: a water storage bucket 1, an operation table 2, a water pump inlet pipe 3, a high-pressure water pump 4, a water pump outlet pipe 5, Pressure pipe water inlet 6, wellbore 7, shell 8, pressure relief pipe drain 9, retractable high pressure hose 10, hose joint 11, tank beam 12, tank 13, base 14, pressure pipe 15, drain Pressure pipe 16, solenoid valve water valve 17.

Wherein, the storage tank 1 is connected to the high-pressure water pump 4 through the water pump inlet pipe 3, and the high-pressure water pump 4 is connected to the pressure pipe water inlet 6 through the water pump outlet pipe 5; And on the pressure pipe 15 and the pressure relief pipe 16 are respectively installed solenoid valve water valve 17, as shown in FIG. 4; the wellbore 7 is detachably connected to the base 14, as shown in FIG. Install the retractable high-pressure water hose 10, the retractable high-pressure hose 10 is connected to the pressure pipe 15 and the pressure relief pipe 16 respectively through the hose joint 11, and the tank beam 12 and the tank pipe 13 are installed inside the wellbore 7, as shown in Figure 3 shown; the casing 8 sets the wellbore 7 inside, and the bottom of the casing 8 is detachably connected to the base 14; the pressure pipe water inlet 6 is connected to the pressure pipe 15, and the pressure relief pipe 16 is connected to the The pressure pipe drainage port 9 is connected; the operating table 2 is electrically connected with the high-pressure water pump 4 and the solenoid valve water valve 17, respectively, to control the opening and closing of the solenoid valve water valve 17 and the start and stop of the high-pressure water pump 4, through the high-pressure water pump 4 The pressurization of the retractable high-pressure hose 10 can be realized, and the pressure adjustment in the retractable high-pressure hose 10 can be realized.

In this embodiment, preferably, the wellbore 7 is fixedly connected to the base 14 by means of bolts and threaded holes. As shown in FIG. The bolts are provided and the bolts are inserted into the threaded holes 1 through the wellbore 7 and then fixed to the base 14 by threaded fitting; and the bottom of the casing 8 is also fixedly connected to the base 14 by means of bolts and threaded holes, that is, the bottom of the casing 8 is also set The bolt is inserted into the threaded hole 2 through the bottom of the housing 8 and then fixed to the base 14 by screw fit.

In the present invention, the retractable high-pressure water belt 10 can be installed in the wellbore 7 in sections, and can simulate the pressure of each section of the wellbore 7 under different geological conditions.

As shown in FIG. 6 , the housing 8 in the present invention adopts a split type, and is matched with bolts and threaded holes 320 to achieve locking together, which is convenient for installation; further, as shown in FIG. 7 , the housing 8 A partition plate 21 is provided, so that the whole section or different sections of the retractable high-pressure water belt can exert force independently without affecting each other; and rubber pads of different thicknesses can be installed on the partition plate 21, which can realize the application of different sizes of vertical additions to the wellbore force relief.

The working principle of the device of the present invention is as follows: under the normal working state of the wellbore 7, the wellbore 7 is only subjected to the action of ground pressure stress, and the ground pressure stress on each section of the wellbore can be calculated by Qin's formula and the heavy liquid ground pressure formula , the operating table 2 opens the high-pressure water pump 4 and the solenoid valve water valve 17 on the pressurizing pipe 15 to supply water to the retractable high-pressure hose 10. When the corresponding retractable high-pressure hose 10 reaches a predetermined pressure, the solenoid valve water valve 17 is closed. When all the retractable high-pressure hoses 10 reach the predetermined pressure, the high-pressure water pump 4 stops working. When the retractable high pressure hose 10 needs to be decompressed, the console 2 opens the pressure relief pipe 16 and the solenoid valve water valve 17 of the drain outlet 9 of the pressure relief pipe to discharge the water from the retractable high pressure hose 10 to a predetermined pressure. When simulating the deformation of different types of wellbore 7, the operating platform 2 applies different predetermined pressures to the entire section or each section of the retractable high-pressure water belt 10 to achieve the predetermined deformation, so as to achieve the effect of simulating the corresponding type of wellbore deformation and lead to the corresponding The state of the tank channel 13 changes.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, and can also be made within the scope of knowledge possessed by those of ordinary skill in the art without departing from the purpose of the present invention. Various changes.

Claims (6)

1. A mine shaft deformation simulation experiment device is characterized by comprising: the water storage device comprises a water storage barrel (1), an operation table (2), a water pump water inlet pipe (3), a high-pressure water pump (4), a water pump water outlet pipe (5), a shaft (7), a shell (8), a telescopic high-pressure water belt (10), a water belt joint (11), a base (14), a pressure pipe (15), a pressure relief pipe (16) and a solenoid valve water valve (17), wherein the water storage barrel (1) is connected with the high-pressure water pump (4) through the water pump water inlet pipe (3), and the high-pressure water pump (4) is connected with a pressure pipe water inlet (6) through the water pump water outlet pipe (5); a pressurizing pipe (15) and a pressure relief pipe (16) are arranged on the base (14), and electromagnetic valve water valves (17) are respectively arranged on the pressurizing pipe (15) and the pressure relief pipe (16); the shaft (7) is detachably and fixedly connected with a base (14), a telescopic high-pressure water belt (10) is installed on the shaft (7) in a segmented mode, the telescopic high-pressure water belt (10) is respectively connected with a pressurizing pipe (15) and a pressure relief pipe (16) through a water belt joint (11), and a cage guide beam (12) and a cage guide (13) are installed inside the shaft (7); the shell (8) is used for sleeving the shaft (7) and the bottom of the shell (8) is detachably and fixedly connected with the base (14); the water inlet (6) of the pressure pipe is connected with the pressure pipe (15), and the pressure relief pipe (16) is connected with the pressure relief pipe water outlet (9); the operating platform (2) is electrically connected with the high-pressure water pump (4) and the electromagnetic valve water valve (17) respectively to control the opening and closing of the electromagnetic valve water valve (17) and the starting and stopping of the high-pressure water pump (4), and pressure adjustment in the telescopic high-pressure water hose (10) is achieved.

2. The mine shaft deformation simulation experiment device of claim 1, wherein: the shaft (7) is fixedly connected with the base (14) in a mode that bolts are matched with the threaded holes.

3. The mine shaft deformation simulation experiment device of claim 1, wherein: the bottom of the shell (8) is fixedly connected with the base (14) in a mode of matching bolts with threaded holes.

4. The mine shaft deformation simulation experiment device of claim 1, wherein: the shell (8) adopts a split type.

5. The mine shaft deformation simulation experiment device of claim 1, wherein: a clapboard (21) is arranged in the shell (8).

6. The mine shaft deformation simulation experiment device of claim 5, wherein: the partition plate (21) is provided with a rubber pad.

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