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为了搞好综合防尘工作,有效地杜绝煤尘事故和保护矿工身体健康,我矿在回采工作面曾采用短钻孔煤壁注水措施。这一措施虽能收到较好的防尘效果,但在注水与采煤工艺的安排上,相互干扰,造成注水工作时干时停,不能长久坚持。为了把回采工作面粉尘浓度降下来,我矿于1981年10月份开始研究煤壁深孔注水工艺,但遇到了打钻难的问题。煤壁深孔注水,要
In order to do a good job of integrated dust prevention, effectively prevent coal dust accidents and protect the health of miners, mine has adopted short borehole coal wall water injection measures in the mining face. Although this measure can receive better dust-proofing effect, it will interfere with each other in the arrangement of water injection and coal mining, resulting in a dry shutdown of water injection work and long-term persistence. In order to reduce the concentration of dust on the working face, I started to study the coal-bed deep hole injection process in October 1981, but encountered a difficult problem of drilling. Coal wall deep hole water, to