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:尚晓明[1] 孙扬[1] SHANG Xiaoming;SUN Yang
出 处:《中国矿山工程》2020年第4期22-23,28,共3页China Mine Engineering
摘 要:在矿山领域,竖井掘进一般分为正向掘进和反向掘进。正向掘进采用由地面垂直向下建井工艺,反向掘进采用自下而上的建井工艺。在一些国家或地区,由于相关规程严格,导致正掘竖井难度大、投资高,正掘建井进度慢,进而导致项目达产晚、经济效益差。本文依托南非某金矿,提出采用斜坡道与反掘竖井协同开拓,以此解决正掘竖井带来的一系列问题,以提升项目的整体经济效益。In the field of mining,shaft sinking is generally divided into blind sinking and raise boring.The shaft construction technology from the ground vertical down is adopted for the blind sinking and from the bottom up is adopted for raise boring.In some countries or regions,it is difficult to excavate the shaft because of the strict regulations,which leads to the high investment,slow progress of the blind sinking shaft,late production and poor economic benefits.Based on a gold mine in South Africa,this paper proposes to use ramp and raise bore shaft to develop in coordination,in order to solve a series of problems brought by the blind sinking and improve the overall economic benefits of the project.
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:216.73.216.3