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塘冲矿井是年产30万吨的新建矿井,主平峒掘进断面为14.2米~2,通过壶天灰岩(f=8～10)、梓门桥灰岩(f=8～1.0)、煤系地层,进入石磴子灰岩,全长4250米,是塘冲矿井能否按期投产的主要关键工程。为了加快掘进速度,缩短建井工期,我们配备了以梭式矿车运输的掘进机械化作业线,从1983年10月进入基岩以来,在施工条件多变和劳动力不足的情况下,单进水平不断提高(见表1),1984年5月份参加煤炭部上“双纲”竞赛,取得成巷进尺260米的好成绩。
Tongchong mine is an annual output of 300000 tons of new mines, the main flat 峒 tunneling section of 14.2 m ~ 2, through pot Tian limestone (f = 8 ~ 10), Zi door bridge limestone (f = 8 ~ 1.0) Coal-bearing strata, into the stone loess limestone, a total length of 4250 meters, is Tongchong mine can be put into operation on schedule the main key project. In order to speed up the tunneling and shorten the construction period, we have equipped with a tunneling mechanized operation line for shuttle transport. Since entering the bedrock in October 1983, under the circumstance of variable construction conditions and insufficient workforce, single entry level (See Table 1). In May 1984, it took part in the “two-class” competition organized by the Ministry of Coal Industry and achieved a good result of 260 meters into the alley.