A roadway deformation monitoring method
A technology for deformation monitoring and roadway, which is applied in the fields of coal mining and roadway deformation monitoring. It can solve the problems of labor-intensive and unmeasured convergence, and achieve the effects of strong environmental adaptability, reduced labor costs, and good measurement results.
Active Publication Date: 2022-04-19
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, using a three-dimensional laser scanner fixed on the top of the roadway to scan from left to right, from top to bottom matrix, and preprocess the original point cloud data according to the quality and characteristics of the data scanned multiple times; extract The point data X, Y, and Z of the roadway reference coordinate mark points with fixed positions for the first time and subsequent ones are calculated by making a difference to calculate the displacement X of the three-dimensional laser rangefinder in the coordinates o , Y o ,Z o ;Calibrate the coordinates of the 3D laser scanner, that is, transform the point data cloud of the next few preprocesses into [X+X o , Y+Y o , Z+Z o ], make the difference between the transformed point data and the first preprocessed data, and get the deformation around the exit roadway. The present invention first applies the three-dimensional laser scanner to the automatic measurement of the coal mine underground, which can scan the entire section of the roadway and obtain the deformation data of all points of the roadway. The method has strong adaptability to the environment and low 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