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:李业君 陈树涛 LI Ye-jun;CHEN Shu-tao(Production Department of Yongmei Coal Company,Henan Energy and Chemical Industry Croup Co.,Ltd.,Yongcheng 476600,China;Xinqiao Coal Mine,Yongmei Coal Company,Henan Energy and Chemical Industry Group Co.,Ltd., Yongcheng 476600,China)
机构地区:[1]河南能源化工集团永煤公司生产部,河南永城476600 [2]河南能源化工集团永煤公司新桥煤矿,河南永城476600
出 处:《煤炭技术》2019年第2期15-17,共3页Coal Technology
摘 要:鉴于新桥煤矿2301工作面煤层厚度0~5.2 m,平均厚度3.9 m,矿井现有支架最高采3.6 m的现状,工作面原设计采用双工作面回采,经过对比分析,提出采用大采高大采长工作面回采工艺,实践证明可减少设备占用,有效提高煤炭回收率,综合效益明显。In view of the present situation that Xinqiao coal mine 2301 working face of coal seam thickness is 0 to 5.2 m,the average thickness is 3.9 m and the maximum existing holder in mine is 3.6 m.the former design was used double mining working face. Through comparing and analyzing,suggested to use big and long working face mining skills. It was proved by practice that we could reduce the equipment occupation,improve the coal recovery rate effectively,the comprehensive benefits are obvious.
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:216.73.216.169