A precise monitoring method for roadway surrounding rock deformation
A technology of surrounding rock deformation and roadway, which is applied in the field of roadway surrounding rock deformation monitoring, can solve the problems of difficulty in connecting multiple sets of base points, weak reliability of research results, and insufficient refinement, so as to achieve reasonable structure, avoid mutual interference, The effect of easy installation
Inactive Publication Date: 2016-01-06
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology
At present, most of the research on the deformation law of the surrounding rock of the roadway is concentrated on the computer numerical simulation and the similar simulation test in the laboratory. Due to the difference between the simulation experiment and the field conditions, the reliability of the research results is weak, and the field research on the deformation law of the surrounding rock of the roadway is restricted. In terms of monitoring methods, the method of monitoring the deep displacement of surrounding rocks with multiple base points is mostly used, which is not refined enough, and it is difficult to arrange multiple sets of base point connection lines, and the operability is poor
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[0011] refer to figure 1 , figure 2 , image 3 To illustrate the present invention, a method for precise monitoring of the deformation of the surrounding rock of the roadway is to monitor the deformation and damage of the surrounding rock at different depths by arranging multiple sets of displacement measuring points inside the drilling 6 of the surrounding rock of the roadway. The sensor probe 1 is sent into the borehole 6 and fixed on the wall of the borehole 6. Multiple sensor probes 1 share a displacement scale 2, so that each sensor probe can be regarded as an independent device to record data, ensuring the reliability of the monitoring data. Displacement scales and sensor probes can use grating scales, magnetic scales, capacitive scales, etc. and their corresponding sensor probes to record the absolute displacement of each sensor probe 1 in real time, and then reflect the deformation at different depths of the surrounding rock, and the recorded data are respectively tr...
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The invention relates to a precision deformation monitoring method for surrounding rock of a roadway. The method includes: arranging a plurality of groups of displacement detection points in drill holes of the surrounding rock of the roadway to monitor deformation and fracture conditions of the surrounding rock at positions of different depths, using easily-dissolved drilling barrels to send a plurality of sensor probes into the drill holes and fixing onto the walls of the drill holes, enabling the plurality of the sensor probes to share a displacement scale, and recording absolute displacement of each sensor probe to reflect deformation of the surrounding rock at the positions of different depths. The easily-dissolved drilling barrels have a certain strength and easily dissolvable in organic solvents, organic solvent guide pipes are arranged in the middles of the easily-dissolved drilling barrels, the top ends of the easily-dissolved drilling barrels are provided with drilling teeth convenient for completely stirring anchoring agents, and the bottom ends of the easily-dissolved drilling barrels are provided with hole sealing clamps which are provided with nuts at the bottom ends. Using the method can realize onsite precise deformation monitoring of the surrounding rock of the roadway and provide technical support for precision monitoring of deformation rules of the surrounding rock of the roadway.
Description
technical field [0001] The invention belongs to the field of roadway surrounding rock deformation monitoring, and specifically relates to a method of drilling in the roadway surrounding rock, a plurality of sensor probes are evenly arranged on the wall of the borehole, and multiple sensor probes share a displacement scale to record each sensor in real time. The absolute displacement of the probe is used to realize the method of on-site precise monitoring of the deformation of the surrounding rock of the roadway. Background technique [0002] With the continuous increase of mine mining depth and mining intensity and complex geological conditions, the roadway surrounding rock damage is serious, support is difficult, and roof fall accidents are also increasing. A detailed grasp of the surrounding rock deformation and failure laws of this type of roadway is the key to solving this problem. The premise and crux of the problem. At present, most of the research on the deformation ...
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IPC IPC(8): E21F17/18
Inventor 马念杰贾后省冯吉成王志刚
Owner CHINA UNIV OF MINING & TECH (BEIJING)