我国煤矿的煤巷、半煤岩巷掘进和采煤工作面,长期以来一直采用干式钻眼。此种作业方式粉尘浓度高达150～200毫克/米~3以上,超出国家煤矿保安规程标准15～20倍,严重危害煤矿井下工人身体健康。1980年,国家颁发的《煤矿安全规程》第十七条明确规定;在采掘煤巷和半煤岩巷必须采用湿式钻眼,以改善井下劳动条件,保障矿工身体健康,提高工作效率。采用中空菱形钢制成麻花钻杆,配上湿式煤电钻进行湿式钻眼,是治理粉尘的有效途径。早在六十年代中期,就有少数煤矿及科研单位开始对湿式煤电钻进行研制。但由于 China’s coal mine Lane, semi-coal rock tunneling and coal mining face, has long been using dry-type drilling. The dust concentration of this method of operation is as high as 150-200 mg / m3, exceeding the standard of national coal mine safety regulations by 15-20 times, seriously damaging the health of coal mine workers. In 1980, Article 17 of the “Coal Mine Safety Regulations” promulgated by the state clearly stipulated that wet drilling must be adopted in mining coal roadways and semi-coal rock roads in order to improve underground working conditions and ensure miners’ health and work efficiency. Made of hollow rhombus twist drill pipe, coupled with wet coal drill for wet drilling, is an effective way to control dust. As early as the mid-1960s, a few coal mines and research institutes started to develop wet coal electric drill. But thanks