煤矿开采
煤礦開採
매광개채
COAL MINING TECHNOLOGY
2014年
1期
56-59
,共4页
L型钻孔%地面预注浆%定向钻进%超前加固
L型鑽孔%地麵預註漿%定嚮鑽進%超前加固
L형찬공%지면예주장%정향찬진%초전가고
L-style drill-hole%surface pre-grouting%directional drilling%advanced reinforcement
L型钻孔地面预注浆技术将传统的地面预注浆技术与先进的定向钻进技术相结合，利用地面预注浆压力大的优点，在井下水平巷道开挖前，从地面对其进行超前加固，从而提高围岩稳定性，降低开挖支护难度，节省开挖支护工期。在介绍L型钻孔地面预注浆技术特点的基础上，阐述了该技术在信湖煤矿的应用情况，并对其关键施工装备进行了总结。
L型鑽孔地麵預註漿技術將傳統的地麵預註漿技術與先進的定嚮鑽進技術相結閤，利用地麵預註漿壓力大的優點，在井下水平巷道開挖前，從地麵對其進行超前加固，從而提高圍巖穩定性，降低開挖支護難度，節省開挖支護工期。在介紹L型鑽孔地麵預註漿技術特點的基礎上，闡述瞭該技術在信湖煤礦的應用情況，併對其關鍵施工裝備進行瞭總結。
L형찬공지면예주장기술장전통적지면예주장기술여선진적정향찬진기술상결합，이용지면예주장압력대적우점，재정하수평항도개알전，종지면대기진행초전가고，종이제고위암은정성，강저개알지호난도，절성개알지호공기。재개소L형찬공지면예주장기술특점적기출상，천술료해기술재신호매광적응용정황，병대기관건시공장비진행료총결。
Combining traditional surface pre-grouting technology and advanced directional drilling technology , the technology of surface pre-grouting with L-style drill-hole can take advantage of large surface pre-grouting pressure , improve surrounding rock stability , reduce excavation difficulty and save construction time by advanced reinforcement on surface before underground horizontal roadway is excava -ted.On the basis of analyzing technical characteristic of surface pre-grouting with L-style drillhole , this paper introduced its application in Xinhu Colliery and summarized its key construction equipments.
