“三软”煤层采动覆岩下沉模式及机理研究  

Study on Overburden Subsidence Mode and Mechanism of"Three Soft"Coal Seam Mining

作　　者：王礼 王明远 闫红波 闫伟涛[3] 陈俊杰[3] WANG Li;WANG Mingyuan;YAN Hongbo;YAN Weitao;CHEN Junjie(Henan Xuchang Xinlong Mining Co.,Ltd.,Yuzhou 461670,China;Jiangsu Geology and Mineral Resources Bureau Second Geological Brigade,Changzhou 213022,China;Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南省许昌新龙矿业有限责任公司,河南禹州461670 [2]江苏省地质矿产局第二地质大队,江苏常州213022 [3]河南理工大学,河南焦作454000

出　　处：《煤炭技术》2023年第8期28-31,共4页Coal Technology

基　　金：国家自然科学基金河南省联合基金重点项目(U21A20108);国家自然科学基金项目(42207534);河南理工大学博士基金(B2017-07)。

摘　　要：以梁北煤矿“三软”煤层11071典型综采工作面为研究对象,通过采用相似材料模拟实验和理论分析方法,阐述了“三软”煤层综放开采条件下导水裂缝带发育充分,地表下沉量大,地表裂缝显现明显的特殊移动变形规律。基于关键层理论,分析了“三软”煤层综采覆岩破断机理,明晰了工作面开采后采动覆岩断裂下沉破坏特征,研究结果为梁北煤矿“三软”煤层开采工作面优化设计及地表采动损害控制提供技术支撑。According to the special geological and mining conditions of fully mechanized caving of"three soft"coal seam with large mining height,the failure mechanism of mining overburden are studied.Taking 11071 typical fully mechanized mining face of"three soft"coal seam in Liangbei coal mine as the research object,special law of the surface movement and deformation is explained by the simulation experiment of similar materials and theoretical analysis method in the condition of fully mechanized caving of"three soft"coal seam,such as the water-conducting crack zone is fully developed,the surface subsidence is large,and the surface crack shows obvious.Based on the key layer theory,the overburden failure mechanism of fully mechanized caving mining of"three soft"coal seam is analyzed,and the failure characteristics of mining overburden after mining working face are clarified,then technical support for the optimization design of mining working face and surface mining damage control of"three soft"coal seam is provided in Liangbei coal mine.

关 键 词：“三软”煤层 相似材料模拟 关键层 地表下沉 

分 类 号：TD325[矿业工程—矿井建设]