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:张银 Zhang Yin(Shanxi Pulongwan Coal Industry Co.Ltd.,Datong Shanxi 037100)
机构地区:[1]山西铺龙湾煤业有限公司,山西大同037100
出 处:《江西煤炭科技》2018年第1期80-82,共3页Jiangxi Coal Science & Technology
摘 要:以4104工面为研究对象,选取8组液压支架,使用矿压观测仪对其初撑力的大小、来压前后所受的支架循环末工作阻力和时间加权平均工作阻力进行了测量。通过现场观测和数据分析,并与ZF8000/230/370型放顶煤支架的技术参数进行对比分析,得出:在来压时,大多支架受力状况在支架额定范围内,普遍存在支架初撑力偏小。Taking 4104 working face as the research object,8 groups of hydraulic supports were selected,and the initial load force,the working resistance of the support end and the time weighted average working resistance before and after the pressure were measured by using the mine pressure observation instrument.Through field observation and data analysis,and comparing with the technical parameters of ZF8000/230/370 type caving support,it is concluded that most of the support conditions are within the rated range of the bracket when the pressure is coming,but the support force of the bracket is generally small.
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:216.73.216.90