摘要
为了研究已采工作面内遗留的断层煤柱对正在回采的横向切割工作面在相邻位置所需留设的断层煤柱尺寸的影响,以某矿3304,3306工作面为背景,根据工作面地质特征,利用FLAC3D软件模拟3306工作面在DF60断层处的回采,分析3306工作面在DF60断层处不同尺寸的断层煤柱的垂直应力和弹性应变能密度,对3306工作面在DF60断层处留设的断层煤柱尺寸进行优化。结果表明:3306回采工作面在DF60断层处所留设的断层煤柱的相对合理的尺寸为120m。
In order to study the influence of the residual fault pillars on the size of the fault pillars in the adjacent positions of the transverse cutting face under mining,taking the 3304 and 3306 working faces in a mine as the background,the mining of 3306 working face in the position of DF60 fault was simulated by FLAC3D software based on its geological characteristics.The vertical stress and elastic strain energy density of fault coal pillars with different sizes at 3306 face in the position of DF60 fault were analyzed,and the size of fault coal pillars at 3306 face in the position of DF60 fault was optimized.The results showed that the relative reasonable size of the coal pillars at 3306 mining face in the position of DF60 fault was 120 m.
作者
顾士坦
刘政
蒋邦友
胡成成
GU Shitan;LIU Zheng;JIANG Bangyou;HU Chengcheng(State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;National Demonstration Center for Experimental Mining Engineering Education,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;College of Mining and Safety Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;Ningxia Long Wei Mine Safety Engineering Co.,Ltd,Yinchuan, Ningxia 750000,China)
出处
《矿业研究与开发》
CAS
北大核心
2019年第9期16-20,共5页
Mining Research and Development
基金
国家重点研发计划项目(2016YFC0801403)
山东省自然科学基金项目(ZR2018MEE009)
关键词
断层煤柱
遗留煤柱
煤柱尺寸
数值模拟
Fault coal pillar
Residual pillar
The size of coal pillars
Numerical simulation
