Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Coal Science and Technology》 2014-12
Add to Favorite Get Latest Update

Development Trend and Technology of Coal Floor Grouting Reinforcement Drilling Construction

DONG Chang-le;MU Pei-ying;LI Quan-xin;FANG Jun;ZHAO Jian-guo;HAO Yong-jin;ZHENG De-zhi;Xi'an Research Institute,China Coal Technology & Engineering Group;Economy and Information Branch,China Coal Research Institute Company Limited;  
The coal floor grouting reinforcement was an effective method for water bursting,according to limitations of conventional drilling construction,the paper mainly introduced directional drilling technology,which had been applied in Zhaogu No. 1 Coal Mine,where six directional holes with total footage of 3 455 m,single- hole footage more than 400 m were drilled,which was three times of conventional drilling borehole. Combined with testing experience,the paper pointed out the attention and several disadvantages,such as complex casing- section construction and buckling borehole trajectory which could reduce borehole completed ratio and drilling efficiency were discussed.Therefore,the paper introduced casing drilling and composite drilling,which could simplify borehole structure,reduce the operating procedure,optimize borehole trajectory and reduce the construction risk.
【Fund】: 科技部科研院所技术开发研究专项资金资助项目(2013EG122191)
【CateGory Index】: TD265.4
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved