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
机构地区:[1]河南省义煤集团公司石壕煤矿,河南义马472123 [2]河南中煤测绘公司,河南郑州450052
出 处:《中国矿山工程》2012年第3期47-49,58,共4页China Mine Engineering
摘 要:根据我国煤田深部开采的实际需要,对已有理论和实测资料进行分析,研究了极不充分开采采出宽度和煤柱留设宽度的计算办法,论述了极不充分开采地表移动的基本特征;并以极不充分开采地表沉陷理论为基础,通过对实测资料的整理和分析,结合深部开采地表移动规律及生产实践,提出了适合建筑物深部压煤开采的阶段开采技术,对减小地下开采对地表建筑物的损害程度、有效提高煤炭采出率有一定的现实意义。According to the actual need of deep coal mining in China, through analyzing the theory and the field data, studying the calculating method of the mining width and the coal pillar width in ultra subcritical mining, the basic characteristics of surface movement of ultra subcritical mining are expounded. Basing on the surface subsidence theory in ultra subcritical mining, through analyzing and sorting out the field data, considering the surface movement trend in deep mining and the practice experience, the stage mining technique which suits for coal mining under buildings is put forward. This technique has practical significance to reduce the buildings damage caused by the deep mining and improve coal recovery coefficient.
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:3.146.206.0