According to the reality of Malan coal mine, analyzes the factors of filling water one by one when dug up.Puts forward the corresponding measures of prophylaxis and treatment.

 
  • 结合马兰矿实际,对采掘生产中井巷的充水因素进行了逐一分析,并提出了相应的防治措施。
今日热词
目录 附录 查词历史