Trinity monitoring method for rock stratum control

Abstract

The invention relates to a trinity monitoring and analyzing method for rock stratum control, and belongs to the field of mining engineering. Mine pressure in a pit is collected by observing a pressure monitoring device arranged on a goaf and a pressure sensor arranged on a hydraulic support; cover rock migration is observed based on the structural position of a key cover rock layer, an inner rock migration multi-point displacement meter is arranged through surface drilling, and mining dynamic cover rock breaking motion data are monitored through based on drilling television equipment; and subsidence data are obtained by observing surface subsidence through GPS. According to the trinity monitoring and analyzing method for the rock stratum control, the action law and influence degree on the mine pressure in the pit of the breaking motion of each key cover rock layer can be researched; the trinity monitoring and analyzing method for the rock stratum control can be used for determining the location of the key layer which causes the appearance of strong mine pressure and disasters; and based on that, breaking of the key layer can be intervened artificially to achieve scientific control over the mine pressure in the pit.

Description

technical field [0001] The invention relates to a monitoring method for rock formation control, and is especially suitable for a three-in-one monitoring and analysis method for rock formation control used in the field of mining engineering. Background technique [0002] With the continuous improvement of supporting equipment and mining technology, fully mechanized mining with large mining height and fully mechanized caving in extra-thick coal seams has developed rapidly, and has been widely used in several mining areas such as Shendong, Datong, Jincheng, and Lu'an in my country. , and instead of layered fully mechanized mining, it has become the two mainstream coal mining technologies for thick and extra-thick coal seams in my country. However, with the increase of coal seam mining thickness, the problem of mine pressure in the stope has become more and more serious. The frequent accidents of roof collapse and roof support at the working face have seriously threatened the saf...

AI Technical Summary

Problems solved by technology

However, with the increase of coal seam mining thickness, the problem of mine pressure in the stope has become more and more serious. The frequent accidents of roof collapse and roof support at the working face have seriously threatened the safe and efficient production of the mine. How to mine the overlying rock is the key It is one of the scientific and engineering problems to be solved urgently in the field of coal mines to effectively monitor the fracture movement of the strata and establish its corresponding relationship with the mine pressure in the stope to realize the effective control of the roof.

[0003] At present, the rock strata control technology based on the breaking movement of the key layer is mostly based on the method of theoretical estimation in the determination of the target key layer, or a single method of drilling and TV hole observation, which has a large blindness

Especially for fully mechanized mining with large mining heights and fully mechanized caving mining in extra-thick coal seams, the primary mining space is large, and the range of overlying rock collapse is wide, and there is a lack of integrated monitoring and analysis of underground mine pressure, overlying rock migration, and surface subsidence. It is difficult to reveal the mechanism of the overlying rock movement on the stope pressure in large-space stopes (large mining height, extra large mining height, and ultra-thick coal seam fully mechanized caving mining)

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