大采高综采面顶板破断特征与覆岩活动规律分析  

Analysis of Roof Fracture Characteristics and Overlying Strata Activity Law of Fully Mechanized Mining Face with Large Mining Height

作　　者：李嘉裕 Li Jiayu(Meiyukou Colliery,Jincheng Energy Holding Coal Mine Group Co.,Ltd.,Datong,Shanxi 037003)

机构地区：[1]晋能控股煤业集团煤峪口矿,山西大同037003

出　　处：《江西煤炭科技》2021年第3期108-110,共3页Jiangxi Coal Science & Technology

摘　　要：以煤峪口矿82002大采高综采面为工程背景,采用相似模拟和现场试验的方法,分析了大采高综采面顶板破断特征与覆岩活动规律:工作面开挖至一定范围时,采空区冒落矸石逐渐压实,基本顶岩层内应力先较小后增加,而在工作面前方未开挖煤体以及滞后工作面一定范围内的基本顶岩层出现应力集中现象,表明工作面存在一定的压力拱结构,该结构承载开挖扰动形成的载荷,现场矿压规律验证了相似模拟的合理性。Taking 82002 fully mechanized face with large mining height of Meiyukou Colliery as engineering background,the paper analyzes the roof fracture characteristics and overlying rock activity law of fully mechanized mining face with large mining height by similar simulation and field test methods.When the working face is excavated to a certain extent,the falling gangue in the goaf is gradually compacted,and the internal stress of the basic top rock layer is firstly smaller and then increased.However,the unexcavated coal body in front of the working face and the basic top rock layer within a certain range of the lagging face show stress concentration,indicating that there is a certain pressure arch structure on the working face,which bears the load formed by the excavation disturbance.Field pressure law verifies the rationality of similar simulation.

关 键 词：大采高综采面 顶板破断特征 覆岩活动 相似模拟 矿压观测 

分 类 号：TD823.97[矿业工程—煤矿开采] TD325.1[矿业工程—矿山开采]