Roadway deformation monitoring method
A deformation monitoring and roadway technology, which is applied in the field of roadway deformation monitoring and coal mining, can solve the problems of labor-intensive, unmeasured convergence, etc., and achieve the effects of strong environmental adaptability, reduced labor costs, and good measurement results
Active Publication Date: 2020-06-12
SHAANXI COAL & CHEM TECH INST
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[0003] At present, the main detection methods for roadway deformation are cross measurement, downhole total station measurement, and laser rangefinder measurement. These measurement methods only aim at the statistics of the convergence of a certain point, and cannot measure the convergence of all points. At the same time, it requires a lot of labor.
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[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] The present invention comprises the following steps:
[0028] 1) Set roadway reference coordinate marker points:
[0029] see figure 1 , the upper part of the interface 7 between the roadway and the active bedrock is the roadway, the lower part is the active bedrock, the upper part of the interface 8 between the active bedrock and the stable bedrock is the active bedrock, and the lower part is the stable bedrock.
[0030] First, use a drill pipe with an inner diameter of 300-350 mm to drill holes in the floor of the roadway to the lower part of the interface 8 between the active bedrock and the stable bedrock 240-300 mm, and then run a 280-330 mm casing 1 to the interface between the active bedrock and the stable bedrock. The upper part of the interface 8 is 50-100mm to protect the wall, and a non-deformable steel rod 2 is used in the middle of the drilling....
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A roadway deformation monitoring method comprises the steps: adopting a three-dimensional laser scanner fixed to the top of a roadway to perform matrix type scanning from left to right and from top tobottom, and preprocessing original point cloud data according to the quality and characteristics of data scanned multiple times; extracting point data X, Y and Z of roadway reference coordinate markpoints with fixed positions for the first time and after the first time, and calculating displacements Xo, Yo and Zo of the three-dimensional laser range finder in coordinates through subtraction; andcalibrating the coordinates of the three-dimensional laser scanner, namely converting the point data subjected to the last few times of preprocessing into [X + Xo, Y + Yo, Z + Zo] through cloud conversion, and subtracting the converted point data from the data subjected to the first time of preprocessing to obtain the deformation around the roadway. The three-dimensional laser scanner is appliedto coal mine underground automatic measurement for the first time, full-section scanning can be conducted on a roadway, and deformation data of all points of the roadway can be obtained. The method ishigh in adaptive capacity to the environment and low in cost.
Description
technical field [0001] The invention relates to the field of mineral mining, in particular to coal mining, in particular to a roadway deformation monitoring method. Background technique [0002] Coal is the main one-time consumption energy in my country, which is related to the sustainable development of the national economy. The large-scale mining and utilization of coal has produced huge benefits but also brought serious safety hazards. The roadway deformation caused by the change of surrounding rock stress caused by mining Accidents such as roof collapse, water and sand inrush, and gas outburst are becoming more and more serious, which have become major hidden dangers threatening mine safety. [0003] At present, the main detection methods for roadway deformation are cross measurement, downhole total station measurement, and laser rangefinder measurement. These measurement methods only aim at the statistics of the convergence of a certain point, and cannot measure the conv...
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IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 刘美乐王苏健黄克军韩磊薛卫峰边海清
Owner SHAANXI COAL & CHEM TECH INST