论文部分内容阅读
龙东立井位于江苏省沛县境内微山湖畔,是一对年产90万吨的大型矿井。该立井井筒于1980年4月开始进行施工准备,1981年4月20日主井筒正式开工,同年底完成井筒冻结段成井300.5米,其中五月份完成86米,创大屯矿区冻结施工井筒新记录。全年平均月成井40.8米,主、副井全年平均月进度44.08米,为1981年度全国立井井筒施工最高水平,被煤炭部授予“立井施工优胜单位”。主井井筒成井300.5米质量全部合格,其中优良品率达84.2％,被煤炭部评为“1981年度煤炭基本建设质量优良单位”(主井井筒1981年的施工主要技术经济指标详见表1。担负主井井筒施工的钢铁掘进
Located at Weishan Lake in Peixian, Jiangsu Province, Longdong Mine is a large-scale mine with an annual output of 900,000 tons. The shaft was started construction in April 1980. On April 20, 1981, the main shaft was officially started. At the end of the same year, the well bore was completed with a well of 300.5 meters in the freezing section, of which 86 meters was completed in May, creating a new record of wellbore construction in Datun Mining Area . The annual average of 40.8 meters per month, main and auxiliary wells annual average annual progress of 44.08 meters, the national shaft for the 1981 1981 the highest level of construction, was awarded the “Ministry of Coal Mine Construction Excellence Unit.” The quality of the main shaft of the well was 300.5 meters, of which 84.2% was excellent, which was appraised as “Excellent Unit for Coal Infrastructure Construction in 1981” by the Ministry of Coal Industry (main technical and economic indicators for main shaft in 1981 are shown in Table 1). Responsible for the construction of the main shaft of the steel tunneling