深井煤体横向变形监测方法与阶跃变形特征

doi:10.13722/j.cnki.jrme.2015.1553

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Abstract Coal-mass deformation，especially the lateral deformation，can be used as an important indicator to evaluate the stability of coal pillar. One high frequency and larger monitoring range of 3 000 m method was designed to monitor the lateral deformation of coal mass in Tangkou coal mine over 1 000 m mining depth. The monitoring results show that the movement of roof and the spatial structure around the strip mining panel cause the lateral deformation trend of coal mass. The lateral deformation becomes large when the station is in 30–40 m front of the working face. The prominent deformation appears when working face passes the station about 28–36 m. The deformation curves become flat successively when working face passes the station about 90 m. The maximum lateral deformation of 287 mm is smaller than that of other coal-mass in the same coal mine. The reasons are without influence of repeated mining，the small angle between roadway and the maximum stress and the bedding sandstone roof easy to break out. Some new characters as discontinuous，step and mutation of coal-mass lateral deformation in deep mining are monitored，which are caused by energy accumulation and release leads coal-mass discontinuous damage in deep mining. Those coal-masses show more plasticity and more elasticity，brittleness and burst tendency at the same time.

Key words： mining engineering coal mass in deep mining lateral deformation monitoring method spatial structure discontinuous step deformation

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	Articles by authors
	CHEN Shaojie1
	2
	WANG Huaiyuan1
	ZHU Yan1
	YIN Dawei1
	QU Xiao1
	LIU Yong1

Cite this article:

CHEN Shaojie1,2,WANG Huaiyuan1, et al. Monitoring method for coal-mass lateral deformation in deep mining and characteristics of step deformation[J]. , 2016, 35(S2): 4121-4128.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.1553 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS2/4121

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