摘要
由于霍州王庄煤矿矿内煤层赋存不稳定 ,致使原煤成本增高 ,为提高经济效益 ,加强环境保护 ,对半煤岩巷掘进技术进行改革 ,实行了大断面充填掘进法后 ,半煤岩巷掘进率提高了2 0 %～ 30 % 。
For the seam stowage is unstable,to increase the cost of raw coal in Huozhou Wangzhuang coal mine,by improving extraction technology,uses large cross-section stowing extraction method for coal and rock roadway,the extraction recovery has been raised 20 % to 30 %,the enviroment has been protected.
出处
《山西焦煤科技》
2003年第3期16-17,共2页
Shanxi Coking Coal Science & Technology
