Precision deformation monitoring method for surrounding rock of roadway
A technology for surrounding rock deformation and roadway, 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, and achieve reasonable structure, avoid mutual interference, Easy to install effect
Inactive Publication Date: 2014-07-16
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 The present invention is described, a method for precise monitoring of roadway surrounding rock deformation, by arranging multiple groups of displacement measuring points in the roadway surrounding rock borehole 6 to monitor the deformation and damage of surrounding rock at different depths, using soluble drill pipe 13 to 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 to ensure the reliability of the monitoring data. Displacement scales and sensor probes can use grating scales, magnetic scales, capacitance 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 of the surrounding rock at different depths. Secondary instrument 5, for storage and real-time...
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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, in particular to a method of arranging a plurality of sensor probes evenly on the borehole wall by drilling holes in the roadway surrounding rock, a plurality of sensor probes sharing a displacement scale, and real-time recording of each sensor The absolute displacement of the probe is used to realize the on-site precision monitoring method of the surrounding rock deformation of the roadway. Background technique [0002] With the continuous increase of the mining depth and mining intensity of the mine and the complex geological conditions, the surrounding rock of the roadway is seriously damaged, the support is difficult, and the roof collapse accident also increases. The premise and key of the problem. At present, most of the research on the deformation law of roadway surrounding rock focuses on computer numerical simulation and laboratory similar simulation experi...
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Inventor 马念杰贾后省冯吉成王志刚
Owner CHINA UNIV OF MINING & TECH (BEIJING)