摘要
为了研究综放工作面采动过程顶煤区域的变形与支护问题,以东峡煤矿项目综放工作面为工程背景,根据该项目综放工作面具体煤层特性,分析综放工作面支架的架型、支护强度等参数,同时结合现场监测资料,验证液压支架的额定工作阻力是否满足工作面现场要求。采用离散元软件模拟分析方法对东峡煤矿项目综放工作面采动过程顶煤变形和支护进行了数值模拟研究,对其应用效果进行验证。随着工作面继续向前推进,上覆基本顶发生周期性垮落,平均周期来压步距在20 m左右。此外,液压支护对于综放工作面的支护效果并未随着推进长度的增加而发生较大变化。根据现场监测数据和计算结果可知,选用的液压支架能满足项目综放工作面支护要求。
In order to study the deformation problem of the top coal area during the mining process of the fully mechanized top coal caving face,taking the fully mechanized top coal caving face of the Dongxia coal mine project as the engineering background,based on the specific coal seam characteristics of the fully mechanized top coal caving face,the support type and the parameters of support strength of the fully mechanized top coal caving face were analyzed.At the same time,combined with on-site monitoring data,the rated working resistance of the hydraulic support meets the on-site requirements of the working face.The discrete element software simulation analysis method was used to numerically simulate the deformation and support of the top coal during the mining process of the fully mechanized caving face in Dongxia coal mine project,and its application effect was verified.As the working face continues to move forward,the overlying basic roof undergoes periodic collapse,with an average cycle of about 20 m in step distance.In addition,the support effect of hydraulic support on the fully mechanized top coal caving working face did not change significantly with the increase of the advancing length.According to on-site monitoring data and calculation results,it is known that the selected hydraulic support can meet the support requirements of the fully mechanized mining face in the project.
作者
董昊福
李超
张玮
殷凌霄
刘扬
王凤超
钮月
DONG Hao-fu;LI Chao;ZHANG Wei;YIN Ling-xiao;LIU Yang;WANG Feng-chao;NIU Yue(Huating Coal Industry Group Co.,Ltd.,Dongxia Coal Mine,Pingliang 744100,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China;School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China;School of Low Carbon Energy and Power Engineering,China University of Mining and Technology,Xuzhou 221116,China)
出处
《科学技术与工程》
北大核心
2025年第17期7107-7114,共8页
Science Technology and Engineering
基金
国家自然科学基金(52104150)
江苏省基础研究计划(BK20231079)
江苏省双创博士计划(JSSCBS20221497)。
关键词
综放工作面
煤层特性
支护参数
数值模拟
顶煤变形
fully mechanized caving face
coal seam characteristics
support parameters
numerical simulation
top coal deformation
