综采工作面沿空留巷顶板覆岩采动裂隙实测分析  

Actual Measurement and Analysis of Mining Fissures of Roof Overburden in Gob-side Entry Retaining of Fully Mechanized Mining Face

作　　者：陈万胜 高亮 王箫鹤 魏晓翔 CHEN Wansheng;GAO Liang;WANG Xiaohe;WEI Xiaoxiang(Shaanxi Coal Group Shenmu Ningtiaota Mining Co.,Ltd.,Shenmu 719000,China;School of Energy and Mining Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China)

机构地区：[1]陕煤集团神木柠条塔矿业有限公司,陕西神木719000 [2]中国矿业大学(北京)能源与矿业学院,北京100083

出　　处：《煤炭技术》2024年第11期83-87,共5页Coal Technology

摘　　要：为了研究厚坚硬岩层下沿空留巷上覆顶板的裂隙破坏规律,以陕煤集团柠条塔矿N1217综采面沿空留巷为背景,使用钻孔窥视仪对N1217运输顺槽超前段和留巷段上覆顶板岩层裂隙破坏进行观测。观测结果表明:超前段距工作面越近上;覆顶板岩层裂隙破断越明显,主要集中在浅中部5 m以下,顶板深部受影响较小。由于一次采动和留巷期间的岩层活动影响,留巷段上覆岩层裂隙进一步发育贯通,不仅使浅中部岩层产生较大破坏,而且也影响到深部顶板岩层。In order to study the fissure damage law of the overlying roof slab along the open stay lane under the thick hard rock layer,the fissure damage of the overlying roof rock layer in the overrunning section and the stay lane section of the N1217 haulage tunnels was observed with the use of a drill hole peeper,taking the background of the open stay lane of the N1217 comprehensive mining face of the Shaanxi coal group's Ningtiaota mine.Observation results show that:the closer the overrun section is to the working face,the more obvious the fracture breakage of the overlying roof rock layer is,which is mainly concentrated in the shallow middle part below 5 m,and the deeper part of the roof plate is less affected.Due to the influence of the rock activities during the primary mining and the stay-alley period,the fissure of the overlying rock layer in the stay-alley section further develops and passes through,which not only causes greater damage to the rock layer in the middle of the shallow area,but also affects the deeper top plate rock layer.

关 键 词：沿空留巷 矿压显现特征 岩层裂隙破断规律 一次采动 

分 类 号：TD823[矿业工程—煤矿开采]