Support technology of deep roadway under high stress and its application

查看全文 作　　者：Cao [1]Rihong;Cao [1]Ping;Lin [1,2]Hang

机构地区：[1]School of Resources and Safety Engineering Central South University, Changsha 410083, China;[2]State Key Laboratory of Coal Resources and Safety Mining, School of Mines, China University of Mining & Technology, Xuzhou 221116, China

出　　处：《International Journal of Mining Science and Technology》索引2016年第26卷第5期,共7页

基　　金：Financial supports for this work, provided by the Major Program of the National Natural Science Foundation of China (Nos. 51174228 and 51474249);the Program for New Century Excellent Talents in University the Open Project of State Key Laboratory of Coal resources and Safe Mining, China University of Mining and Technology 摘　　要：Roadway instability has been a major concern in the fields of mining engineering. This paper aims to provide practical and efficient strategy to support the roadways under high in-situ stress. A case study on the stability of deep roadways was carried out in an underground mine in Gansu province, China. Currently,the surrounding rock strata is extremely fractured, which results in a series of engineering disasters, such as side wall collapse and severe floor heave in the past decades. Aiming to solve these problems, an improved support method was proposed, which includes optimal bolt parameters and arrangement, floor beam layout by grooving, and full length grouting. Based on the modeling results by FLAC3D, the new support method is much better than the current one in terms of preventing the large deformation of surrounding rock and restricting the development of plastic zones. For implementation and verification, field experiments, along with deformation monitoring, were conducted in the 958 level roadway of Mining II areas. The results show that the improved support can significantly reduce surrounding rock deformation, avoid frequent repair, and maintain the long-term stability of the roadway. Compared to the original support, the new support method can greatly save investment of mines, and has good application value and popularization value. 关键词：Deep roadway Floor heave High stress SUPPORT Steel beam

相关文献

参考文献（18）
引证文献（10）
耦合文献（632）

参考文献(18)

引证文献(10)

耦合文献(632)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Support technology of deep roadway under high stress and its application

参考文献(18)

引证文献(10)

耦合文献(632)

用户提示