深部沿空综放面巨厚表土加载型冲击地压机理研究  

Study on the Mechanism of Loaded Rockburst of Huge-Thick Topsoil in Fully Mechanized Caving Face Along the Deep Goaf

作　　者：崔小超 王艳立 王方方 张斌 张修峰 张浩 赵金鑫 夏彪 CUI Xiaochao;WANG Yanli;WANG Fangfang;ZHANG Bin;ZHANG Xiufeng;ZHANG Hao;ZHAO Jinxin;XIA Biao(Zhaolou Coal Mine of Yanmei Heze Energy and Chemical Co.,Ltd.,Heze,Shandong 274705,China;Yankuang Energy Group Co.,Ltd.,Zoucheng,Shandong 273500,China;Ordos Yingpanhao Coal Co.,Ltd.,Ordos,Inner Mongolia 301700,China;Shandong Energy Group Co.,Ltd.,Jinan,Shandong 250101,China;Shandong Energy Xinwen Group Xinjulong Co.,Ltd.,Heze,Shandong 274918,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]兖煤菏泽能化有限公司赵楼煤矿,山东菏泽市274705 [2]兖矿能源集团股份有限公司,山东邹城市273500 [3]鄂尔多斯市营盘壕煤炭有限公司,内蒙古鄂尔多斯市017300 [4]山东能源集团有限公司,山东济南250101 [5]山东新巨龙能源有限责任公司,山东菏泽市274918 [6]北京科技大学土木与资源工程学院,北京100083

出　　处：《矿业研究与开发》2023年第6期89-96,共8页Mining Research and Development

基　　金：国家自然科学基金项目(51904017);山东省重大科技创新工程项目(2019SDZY02);中国科协青年人才托举工程项目(2021QNRC001).

摘　　要：以赵楼煤矿7303工作面为工程背景,采用理论分析、现场实测等方法,对深部沿空综放面巨厚表土加载型冲击地压机理进行研究,总结了厚表土薄基岩综放面的覆岩空间运动结构演化规律,建立了表土加载阶段的土压力拱载荷传递机制力学模型,基于理论分析结果划分了深部沿空综放面巨厚表土加载阶段的管控区域范围与等级,深部沿空综放面巨厚表土加载型冲击地压机理为:推进至表土持力层破断步距时,巨厚表土通过土压力拱将自身载荷传递至承载基岩,随着基岩破断运动持续加载至工作面前方煤体中,导致煤壁前方大范围煤层应力持续性升高,容易诱发冲击地压。通过微震监测、地表沉陷和现场显现数据,验证了深部沿空综放面地层运动、地表沉陷与巨厚表土加载型冲击地压发生高度相关,可作为预测预报巨厚表土加载型冲击地压的参考依据。Taking the 7303working face of Zhaolou Coal Mine as the engineering background,theoretical analysis,on-site measurement and other methods were used to study the mechanism of loaded rockburst of huge-thick topsoil in fully mechanized caving face along the deep goaf.The evolution law of overlying strata spatial motion structure in fully mechanized caving face with huge-thick topsoil and thin bedrock was put forward,and the mechanical model of earth pressure arch load transfer mechanism in topsoil loading stage was established.Based on the results of theoretical analysis,the scope and grade of control area of huge-thick topsoil loading stage in fully mechanized caving face along the deep goaf were divided.The mechanism of loaded rockburst of huge-thick topsoil in fully mechanized caving face along the deep goaf is as follows:as advancing to the breaking step of the topsoil bearing layer,the huge-thick topsoil transfers its own load to the bearing bedrock through the earth pressure arch;as the bedrock breaks,it continues to load into the coal body in front of the working face,causing a continuous increase in stress in a large range of coal seams in front of the coal wall,which is easy to induce rockburst.Through microseismic monitoring,surface subsidence and field appearance data,it is verified that the formation movement and surface subsidence of fully mechanized caving face along the deep goaf are highly correlated with the occurrence of huge-thick topsoil loaded rockburst.The study can be used as a reference for predicting huge-thick topsoil loaded rockburst.

关 键 词：深部矿井 巨厚表土 沿空综放面 冲击地压 地表沉降 微震监测 

分 类 号：TD324[矿业工程—矿井建设]