Comprehensive test platform for supporting research and working method

Abstract

The invention provides a comprehensive test platform for supporting research and a working method.The platform comprises a drilling machine system, a while-drilling monitoring system, an anchor withdrawing system and an analog simulation testbed, the drilling machine system is provided with a migration chassis and can move freely, the drilling machine system is used for drilling and anchoring, the while-drilling monitoring system is arranged on a drill rod of the drilling machine system, and the anchor withdrawing system is arranged on the drilling machine system. The dynamic technical indexes in the working process of a drill rod can be monitored, the anchor withdrawing system is arranged at one end of the drilling machine system and used for conducting anchor withdrawing operation on an anchored anchor rod (cable) and recording the dynamic technical indexes in the anchor withdrawing process, and the similar simulation test bed is used for bearing similar simulation materials. And the drilling machine system is used for drilling and anchoring the similar simulation material. The device can systematically simulate each working procedure during roadway support, such as drilling and lithology monitoring, anchoring and anchoring monitoring, anchor withdrawing and anchor withdrawing monitoring, and is simple in overall structure, convenient to operate and high in working efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of test equipment, and in particular relates to a comprehensive test platform for support research and a working method. Background Art

[0002] In the current field of tunnel support, the use of anchor rods (cables) for support has become a widely used conventional solution. This technology plays a key role in various mines, underground engineering and other projects due to its many advantages such as effective reinforcement of surrounding rock and maintenance of tunnel stability.

[0003] However, the existing comprehensive test platforms for support research have many limitations. At present, most of the existing test platforms have the disadvantage of relatively single functions. Some test platforms focus their research and development on the preparation of similar simulation materials, but ignore the in-depth exploration of the key links of subsequent support; some other test platforms focus on the detection of rock properties, but fail to organically combine rock characteristics with the effectiveness of anchor (cable) support.

[0004] In fact, the core demand of anchor (cable) support research is to effectively improve the anchoring force and comprehensively enhance the reliability of anchoring. However, the current scattered, single-function test platforms are obviously unable to meet this systematic demand and it is difficult to fully simulate the entire process of anchor (cable) installation to final anchor withdrawal.

[0005] In view of this, the careful design of a systematic, multifunctional integrated test platform for support research is of great practical significance for deepening the research on anchor (cable) support technology and ensuring the long-term stable operation of lane (tunnel) projects. This has also become a key issue that needs to be urgently overcome in the field of lane (tunnel) support technology. Summary of the invention

[0006] In order to solve the above-mentioned problems, the present invention proposes a comprehensive test platform and working method for support research, which can systematically simulate various processes in tunnel support, such as drilling and lithology monitoring, anchoring and anchor monitoring, anchor withdrawal and anchor withdrawal monitoring, etc. The overall structure is simple, the operation is convenient, and the work efficiency is high.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: In the first aspect, the present invention provides a comprehensive test platform for support research, including: a drilling rig system, a drilling monitoring system, an anchor withdrawal system, and a similar simulation test bench. The drilling rig system has a transport chassis and can move freely. The drilling rig system is used for drilling and anchoring. The drilling monitoring system is arranged on the drill rod of the drilling rig system and can monitor the dynamic technical indicators of the drill rod during operation. The anchor withdrawal system is arranged at one end of the drilling rig system. The anchor withdrawal system is used to withdraw the anchor rod (cable) that has been anchored, and at the same time record the dynamic technical indicators during the anchor withdrawal process. The similar simulation test bench is used to carry similar simulation materials, and the drilling rig system performs drilling and anchoring operations on similar simulation materials.

[0008] Preferably, the drilling rig system is provided with an integrated measurement and control system, which is used to control the movements of the drilling rig system, the drilling monitoring system, the anchor withdrawal system and similar simulation test benches, and to collect, analyze and store monitoring data of the dynamic technical indicators of each part.

[0009] Preferably, the drilling monitoring system is arranged on the drill rod of the drilling rig system to monitor dynamic technical indicators such as rotation speed, torque, thrust, displacement and vibration state of the drill rod.

[0010] Preferably, the anchor removal system is provided with a three-degree-of-freedom motion platform, which is placed on the chassis of the drilling rig system. The three-degree-of-freedom motion platform can provide movement in three directions of X, Y, and Z, and is used to drive the anchor removal system to align and grab the tail end of the anchor rod (cable) for performing anchor removal operations.

[0011] Preferably, the three-degree-of-freedom motion platform is provided with a displacement sensor along the Z-axis direction, and the displacement sensor is used to calibrate the displacement information of the anchor withdrawal system pulling the anchor rod (cable).

[0012] Preferably, a tension sensor is provided on the anchor withdrawal system, and the tension sensor is used to calibrate the numerical information of the anchoring force of the anchor rod (cable) during the process of the anchor withdrawal system pulling out the anchor rod (cable).

[0013] Preferably, the lifting and lowering of the three-degree-of-freedom motion platform in the Z-axis direction is driven by a hydraulic cylinder and controlled by a Y-type three-position four-way valve.

[0014] Preferably, a liquid spraying device is provided on the test chamber of the similar simulation test bench, and the liquid spraying device injects aqueous solution into the anchoring hole during the anchoring process to simulate water seepage in rock crevices during tunnel anchoring construction.

[0015] Preferably, a temperature control device is provided on the test chamber of the similar simulation test bench, and the temperature control device can adjust the temperature of the anchoring hole to test the anchoring effect at different temperatures.

[0016] In a second aspect, the present invention provides a working method of a comprehensive test platform for support research, based on a comprehensive test platform for support research provided in the first aspect, comprising: S1: The operator controls the test chamber of the similar simulation test bench to descend, adds similar simulation materials inside the test chamber, and then raises the test chamber to the test position; S2: Turn on the liquid spray device and temperature control device to simulate water seepage in rock cracks during tunnel anchoring construction and regulate rock temperature; S3: The operator controls the drilling system to move to the bottom of the test chamber, adjusts the position, and performs drilling operations on similar simulated materials in the test chamber. At the same time, the drilling monitoring system monitors the dynamic technical indicators of the drill pipe during the drilling process; S4: After the drilling is completed, the operator uses the drilling rig system to anchor the borehole. At the same time, the drilling monitoring system monitors the dynamic technical indicators of the drill pipe during the anchoring process; S5: When the anchoring strength reaches the set requirements, the operator controls the anchor withdrawal system to reach below the anchoring position, and then starts the three-degree-of-freedom motion platform, which can provide movement in three directions of X, Y, and Z to drive the anchor withdrawal system to align and grab the tail end of the anchor rod (cable) for anchor withdrawal operation; S6: The anchor undocking operation begins. At the same time, the displacement sensor and the tension sensor monitor the dynamic technical indicators of the anchor undocking displacement and the anchor undoing tension respectively, and finally the anchor undoing operation is completed; S7: Take out the similar simulated materials that have been tested and clean the equipment for next use; S8: The monitoring data of each stage are summarized through the comprehensive measurement and control system to conduct a comprehensive evaluation of the anchoring performance.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can systematically simulate various processes in tunnel support, such as drilling and lithology monitoring, anchoring and anchor monitoring, anchor withdrawal and anchor withdrawal monitoring, etc., to form corresponding data sets for each link, so as to conduct in-depth research on anchoring methods, performance and effects.

[0018] 2. The present invention has a simple overall structure, is easy to operate and has high working efficiency.

[0019] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure but do not constitute a limitation of the present disclosure.

[0021] Figure 1 This is a schematic diagram of the overall layout of the comprehensive test platform for support research; Figure 2 This is a partial structural diagram of the drilling rig system; Figure 3 This is a functional diagram of a Y-type three-position four-way hydraulic valve; Figure 4 It is a schematic diagram of the partial structure of a similar simulation test bench; Among them, 1-drilling rig system; 101-measurement and control system; 2-drilling monitoring system; 3-anchor withdrawal system; 301-three-degree-of-freedom motion platform; 302-displacement sensor; 303-tension sensor; 4-similar simulation test bench; 401-test chamber; 402-liquid spray device; 403-temperature control device. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Embodiment 1

[0023] like Figure 1 As shown, this embodiment discloses a comprehensive test platform for support research, including a drilling system 1, a drilling monitoring system 2, an anchor withdrawal system 3, and a similar simulation test bench 4. The drilling system 1 has a transport chassis and can move freely. The drilling system 1 is used for drilling and anchoring. The drilling monitoring system 2 is arranged on the drill rod of the drilling system 1, and can monitor the dynamic technical indicators of the drill rod during operation. The anchor withdrawal system 3 is arranged at one end of the drilling system 1. The anchor withdrawal system 3 is used to withdraw the anchor rod (cable) that has been anchored, and at the same time record the dynamic technical indicators during the withdrawal process. The similar simulation test bench 4 is used to carry similar simulation materials. The drilling system 1 performs drilling and anchoring operations on the similar simulation materials in the similar simulation test bench 4.

[0024] like Figure 2 As shown, the drilling rig system 1 provided in this embodiment is provided with an integrated measurement and control system 101, which is used to control the movements of the drilling rig system 1, the drilling monitoring system 2, the anchor withdrawal system 3 and a similar simulation test bench 4, and to collect, analyze and store monitoring data of the dynamic technical indicators of each part.

[0025] The drilling monitoring system 2 provided in this embodiment is arranged on the drill rod of the drilling rig system 1 to monitor dynamic technical indicators such as rotation speed, torque, thrust, displacement, and vibration state of the drill rod.

[0026] The anchor removal system 3 provided in this embodiment is provided with a three-degree-of-freedom motion platform 301, which is placed on the chassis of the drilling rig system 1. The three-degree-of-freedom motion platform 301 can provide movement in three directions of X, Y, and Z, and is used to drive the anchor removal system 3 to align and grab the tail end of the anchor rod (cable) for performing the anchor removal operation.

[0027] The three-degree-of-freedom motion platform 301 provided in this embodiment is provided with a displacement sensor 302 along the Z-axis direction. The displacement sensor 302 is used to calibrate the displacement information of the anchor rod (cable) of the anchor withdrawal system 3 .

[0028] The anchor withdrawal system 3 provided in this embodiment is provided with a tension sensor 303, and the tension sensor 303 is used to calibrate the numerical information of the anchoring force of the anchor rod (cable) during the process of the anchor withdrawal system 3 pulling out the anchor rod (cable).

[0029] like Figure 3 As shown, the Z-axis lifting and lowering of the three-degree-of-freedom motion platform 301 provided in this embodiment is driven by a hydraulic cylinder and controlled by a Y-type three-position four-way valve. The advantage of this design is that when the anchor unloading system 3 is to be unloaded, the anchor unloading system 3 needs to be extended, and the control valve of the Z-axis driving hydraulic cylinder of the three-degree-of-freedom motion platform 301 is in the middle position. Since the control valve of the hydraulic cylinder is a Y-type three-position four-way valve, the hydraulic cylinder can be freely extended and retracted under the action of external force, so that the extension of the anchor unloading system 3 will not be hindered, which is helpful for the anchor unloading work and the accurate measurement of the anchor unloading tension.

[0030] like Figure 4 As shown, the test chamber 401 of the similar simulation test bench 4 provided in this embodiment has a lifting function. When the test chamber 401 is lowered, it is convenient to add or prepare similar simulation materials. After being raised, the drilling rig system 1 moves to the bottom of the test chamber 401 to simulate the tunnel roof.

[0031] The test chamber 401 of this embodiment is provided with a liquid spraying device 402, which injects aqueous solution into the anchoring hole during the anchoring process to simulate water seepage in rock gaps during tunnel anchoring construction. Water seepage in rock gaps is an important factor affecting the anchoring quality. The liquid spraying device 402 uses a water pump to supply water, and the pH value of the aqueous solution can be adjusted as needed, and the amount of water can also be adjusted by adjusting the opening degree of the valve as needed.

[0032] The test chamber 401 of this embodiment is provided with a temperature control device 403, which can adjust the temperature of the anchor hole and is used to test the anchoring effect at different temperatures. Temperature is another important factor affecting the anchoring quality. The temperature control device 403 uses an electric heating plate to control the temperature. Embodiment 2

[0033] This embodiment provides a corresponding working method based on the comprehensive test platform for support research provided in the first embodiment. The working method is specifically as follows: S1: The operator controls the test chamber 401 of the similar simulation test bench 4 to be lowered, adds similar simulation materials inside the test chamber 401, and then raises the test chamber 401 to the test position; S2: Turn on the liquid spray device 402 and the temperature control device 403 to simulate water seepage in rock crevices during tunnel anchoring construction and to regulate rock temperature; S3: The operator controls the drilling system 1 to move to the bottom of the test chamber 401, adjusts the position, and performs drilling operation on similar simulated materials in the test chamber 401. At the same time, the drilling monitoring system 2 monitors the dynamic technical indicators of the drill pipe during the drilling process; S4: After the drilling is completed, the operator uses the drilling system 1 to perform anchoring operations on the borehole, and at the same time, the drilling monitoring system 2 monitors the dynamic technical indicators of the drill pipe during the anchoring process; S5: When the anchoring strength reaches the set requirement, the operator controls the anchor withdrawal system 3 to reach below the anchoring position, and then starts the three-degree-of-freedom motion platform 301. The three-degree-of-freedom motion platform 301 can provide movement in three directions of X, Y, and Z, and drives the anchor withdrawal system 3 to align and grab the tail end of the anchor rod (cable) for anchor withdrawal operation; S6: The anchor undocking operation starts. Meanwhile, the displacement sensor 302 and the tension sensor 303 monitor the dynamic technical indicators of the anchor undocking displacement and the anchor undoing tension respectively, and finally the anchor undoing operation is completed; S7: Take out the similar simulated materials that have been tested and clean the equipment for next use; S8: The monitoring data of each stage are summarized through the comprehensive measurement and control system 101 to conduct a comprehensive evaluation of the anchoring performance.

[0034] It should be understood that the operation sequence can be adjusted as needed, and those skilled in the art can make specific settings based on actual conditions.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A comprehensive test platform for support research, characterized in that: include: Drilling rig system, drilling monitoring system, anchor withdrawal system, similar simulation test bench. The drilling rig system has a transport chassis and can move freely. The drilling rig system is used for drilling and anchoring. The drilling monitoring system is arranged on the drill rod of the drilling rig system and can monitor the dynamic technical indicators of the drill rod during operation. The anchor withdrawal system is arranged at one end of the drilling rig system. The anchor withdrawal system is used to withdraw the anchored anchor rod (cable) and record the dynamic technical indicators during the anchor withdrawal process. The similar simulation test bench is used to carry similar simulation materials. The drilling rig system performs drilling and anchoring operations on similar simulation materials.

2. A comprehensive test platform for support research as claimed in claim 1, characterized in that: The drilling rig system is provided with an integrated measurement and control system, which is used to control the movements of the drilling rig system, the drilling monitoring system, the anchor withdrawal system and similar simulation test benches, and to collect, analyze and store monitoring data of the dynamic technical indicators of each part.

3. A comprehensive test platform for support research as claimed in claim 1, characterized in that: The drilling monitoring system is arranged on the drill rod of the drilling rig system to monitor the dynamic technical indicators such as rotation speed, torque, thrust, displacement and vibration state of the drill rod.

4. A comprehensive test platform for support research as claimed in claim 1, characterized in that: The anchor withdrawal system is provided with a three-degree-of-freedom motion platform, which is placed on the chassis of the drilling rig system. The three-degree-of-freedom motion platform can provide movement in three directions of X, Y and Z, and is used to drive the anchor withdrawal system to align and grab the tail end of the anchor rod (cable) for performing anchor withdrawal operations.

5. A comprehensive test platform for support research as claimed in claim 4, characterized in that: The three-degree-of-freedom motion platform is provided with a displacement sensor along the Z-axis direction, and the displacement sensor is used to calibrate the displacement information of the anchor rod (cable) pulled out by the anchor withdrawal system.

6. A comprehensive test platform for support research as claimed in claim 1, characterized in that: The anchor withdrawal system is provided with a tension sensor, which is used to calibrate the numerical information of the anchoring force of the anchor rod (cable) during the process of pulling out the anchor rod (cable) by the anchor withdrawal system.

7. A comprehensive test platform for support research as claimed in claim 4, characterized in that: The lifting and lowering of the three-degree-of-freedom motion platform in the Z-axis direction is driven by a hydraulic cylinder and controlled by a Y-type three-position four-way valve.

8. A comprehensive test platform for support research as claimed in claim 1, characterized in that: The test chamber of the similar simulation test bench is provided with a liquid spraying device, and the liquid spraying device injects aqueous solution into the anchoring hole during the anchoring process to simulate water seepage in rock crevices during tunnel anchoring construction.

9. The comprehensive test platform for support research as claimed in claim 1, characterized in that: The test chamber of the similar simulation test bench is provided with a temperature control device, which can adjust the temperature of the anchoring hole and is used to test the anchoring effect at different temperatures.

10. A working method of a comprehensive test platform for support research, based on a comprehensive test platform for support research according to any one of claims 1 to 9, characterized in that: include: S1: The operator controls the test chamber of the similar simulation test bench to descend, adds similar simulation materials inside the test chamber, and then raises the test chamber to the test position; S2: Turn on the liquid spray device and temperature control device to simulate water seepage in rock cracks during tunnel anchoring construction and regulate rock temperature; S3: The operator controls the drilling system to move to the bottom of the test chamber, adjusts the position, and performs drilling operations on similar simulated materials in the test chamber. At the same time, the drilling monitoring system monitors the dynamic technical indicators of the drill pipe during the drilling process; S4: After the drilling is completed, the operator uses the drilling rig system to anchor the borehole. At the same time, the drilling monitoring system monitors the dynamic technical indicators of the drill pipe during the anchoring process; S5: When the anchoring strength reaches the set requirements, the operator controls the anchor withdrawal system to reach below the anchoring position, and then starts the three-degree-of-freedom motion platform, which can provide movement in three directions of X, Y, and Z to drive the anchor withdrawal system to align and grab the tail end of the anchor rod (cable) for anchor withdrawal operation; S6: The anchor undocking operation begins. At the same time, the displacement sensor and the tension sensor monitor the dynamic technical indicators of the anchor undocking displacement and the anchor undoing tension respectively, and finally the anchor undoing operation is completed; S7: Take out the similar simulated materials that have been tested and clean the equipment for next use; S8: The monitoring data of each stage are summarized through the comprehensive measurement and control system to conduct a comprehensive evaluation of the anchoring performance.

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