地质结构影响下的金属矿山地压显现机制初探

doi:10.13722/j.cnki.jrme.2022.0521

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Abstract Taking the east area of Jinshandian Iron Mine as the engineering research background，the occurrence mechanism of ground pressure in metal mines under the influence of geological discontinuities is studied using geological survey，displacement monitoring，numerical simulation and theoretical analysis methods. The research results show that with increasing the mining depth，the rock mass structure has a significant control effect on the range of the surrounding rock pressure around the goaf. Under the action of the dominant steeply inclined discontinuous plane，the surrounding rock on the upper wall forms an anti-dipping rock wall，and the surrounding rock of the footwall forms a dipping rock wall. The surface pressure of the hanging wall is much larger than that of the foot wall. The characteristics of ground pressure are obvious different in different regions. The roadway in the main control area of the structural plane is characterized by the overall deflection and deformation of the section，but the roadway controlled by the fault is mainly characterized by the vertical collapse of the roof，in which the incoming pressure is more serious. The spatial dislocation effect manifested by ground pressure is the result of the combined action of structural plane occurrence and local fault slip，which manifests that the roadway is stable in the mining stage，and the transportation roadway in the stage of mined and deep unmined body has a large area of continuous collapse and falling.

Key words： mining engineering geological discontinuities ground pressure microseismic monitoring deformation monitoring iron mine

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	Articles by authors
	LIU Xiumin1
	2
	WANG Yue1
	2
	CHEN Congxin1
	2
	ZENG Yunchuan3
	XIA Kaizong1
	2
	SUN Chaoyi1
	2

Cite this article:

LIU Xiumin1,2,WANG Yue1, et al. Preliminary study on the occurrence mechanism of ground pressure in iron mines under the influence of geological discontinuities[J]. , 2022, 41(12): 2451-2459.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0521 OR http://rockmech.whrsm.ac.cn/EN/Y2022/V41/I12/2451

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