检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:班海军 Ban Hai-jun(Coal Industry Bureau of Dongsheng District, Ordos City, Inner Mongolia Ordos 017100)
机构地区:[1]鄂尔多斯市东胜区煤炭工业管理局,内蒙古鄂尔多斯017100
出 处:《山东煤炭科技》2018年第5期43-46,共4页Shandong Coal Science and Technology
摘 要:东胜煤田是侏罗纪早、中期沉积含煤建造,主要含煤地层为侏罗系中下统延安组,各主要可采煤层顶底板岩石均较松软,在采掘过程中出现区域性小面积顶板垮落或掉渣现象,给生产安全带来威胁。范家村煤矿自投产以来,在煤炭开采过程中,未发生顶板生产安全事故。本文介绍的2116综采工作面综合顶板管理技术措施,对指导矿区生产安全具有重要意义。Dongsheng coalfield is of early Jurassic, middle sedimentary coal-bearing construction, whose coal-bearing strata mainly belongs to Jurassic system in the middle and lower Yan'an group, and the roof and floor rocks of the main minable seam are relatively soft, hence there appear partial roof caving and scaling-off in the process of mining, threatening the production safety. However, in Fanjiacun Coal Mine, no roof production safety accidents occurred during its coal mining. This paper introduces the roof management measures of 2116 fully mechanized mining face, which is of great significance to guiding the production safety of mine.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.15