摘要
L型钻孔地面预注浆技术将地面预注浆技术与定向钻进技术进行结合,充分体现出定向钻进技术的先进性,放大地面预注浆压力大的优点,提高煤矿产业的挖掘速度。L型钻孔地面预注浆技术采用超前加固的措施,提高了围岩的稳定性,降低了开挖支护难度。
L type borehole ground pre- grouting technology combines ground pre- grouting with directional drilling,fully embodies the advanced directional drilling technology,amplifies the advantages of ground grouting pressure and improves mining speed. L type borehole ground pre- grouting with advanced strengthening improves the stability of surrounding rock and reduced the mining supporting difficulty.
出处
《煤炭与化工》
CAS
2015年第6期70-72,共3页
Coal and Chemical Industry
关键词
L型钻孔
地面预注浆
定向钻进
超前加固
L type borehole
ground pre-grouting
directional drilling
advanced reinforcement.
