论文部分内容阅读
淮南煤田西部矿区,除新庄孜煤矿外,都是在“大跃进”前后三年相继投产的。矿区的基本情况是:表土层约为16～20米;可采煤层15层,总厚度约30米,每一个煤柱约留下500～1000万吨煤;“一五”期间集中开发了淮南西部煤田,造成矿井集中、矿走向短,以致延深频繁,瓦斯和地温亦随之递增,原设计的风井能力达不到“煤矿保安规程”所规定的指标。为保证矿井安全生产、改善矿工劳动条件,决定增建新井风。但因工业广场面积有限,新风井不能建设在广场内。若将新风井建在煤层群底板,井筒将须穿过乌拉统含水层,施工技术难度较大。
The western mining area of Huainan Coalfield, except for the Xinzhuangzi coal mine, was successively put into operation three years before and after the “Great Leap Forward.” The basic conditions of the mining area are: the topsoil is about 16 to 20 meters; the coal seam 15 layers, the total thickness of about 30 meters, leaving a coal pillar of about 500 to 10 million tons of coal; “first five” period focused on the development Huainan western coalfield, resulting in mine concentration, ore to short, resulting in frequent deepening, gas and ground temperature also will increase, the original design of the wind well can not meet the “coal mine safety regulations,” the targets set. In order to ensure the safe production of mine and improve the working conditions of miners, it was decided to build a new well wind. However, due to the limited area of industrial square, fresh air shaft can not be built in the square. If the new air shaft is built on the floor of the coal seam group, the wellbore will have to pass through the Ulaan aquifer and the construction technology is more difficult.