复合顶板切顶沿空留巷围岩变形分区及耦合支护技术  

Surrounding rock deformation division and coupling support technology in gob-side entry retaining through cutting the composite roof

作　　者：高喜才[1] 马腾飞 范凯 肖前昌 胡彬 王灿华[3] GAO Xi-cai;MA Teng-fei;FAN Kai;XIAO Qian-chang;HU Bin;WANG Can-hua(College of Energy Engineering,Xi'an University of Science and Technology,Xian 710054,China;Sichuan Huayingshan Longtan Coal and Electricity Co.,Ltd.,Guang'an 638020,China;Sichuan Huayingshan Guangneng Group Co.,Ltd.,Guang'an 638027,China)

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]四川华蓥山龙滩煤电有限责任公司,四川广安638020 [3]四川华蓥山广能(集团)有限责任公司,四川广安638027

出　　处：《煤炭工程》2021年第7期36-41,共6页Coal Engineering

基　　金：陕西省自然科学基础研究计划(2015JQ5156);山东省重大科技创新工程项目(2019JZZY020326);陕西省自然科学基础研究计划—陕煤联合基金项目(2021JLM-10)。

摘　　要：为解决复合顶板切顶沿空留巷围岩存在顶板易破碎、下沉量大等问题,以龙滩煤矿3124S工作面风巷为工程背景,基于复合顶板切顶沿空留巷顶板变形监测结果,研究了复合顶板切顶沿空留巷围岩变形特征,揭示了留巷巷道复合顶板变形破坏机理,同时,根据围岩变形特征提出了分区域多介质耦合支护技术。结果表明,分区域多介质耦合支护技术可有效控制顶板变形,顶板最大下沉量约为62mm,降低了60%~75%,留巷效率提升了15%~40%,保障了工作面的快速推进。In order to solve the problems of the easy breakage and large subsidence of the roof in the gob-side entry retaining though cutting the composite roof,the tailgate of 3124 S working face in Longtan Coal Mine is taken as the engineering background.Based on the deformation monitoring results,the deformation characteristics of the surrounding rock in the composite roof cutting are studied,and the deformation failure mechanism of the composite roof cutting is revealed.Meanwhile,the regional multi-media coupling support technology and process are proposed according to deformation characteristics of the surrounding rock.The results show that the roof deformation can be controlled by taking the multi-media coupling support technology in the different areas.The maximum subsidence of the roof reduced by 60%~75%,is 62 mm,and the efficiency of roadway retaining is increased by 15%~40%,which ensures the rapid advancement of the working face.

关 键 词：复合顶板 切顶沿空留巷 变形分区 耦合支护技术 

分 类 号：TD353[矿业工程—矿井建设]