Optimization of the fully grouted rock bolts for load transfer enhancement

被引：17

作者：

Mostafa, Ghadimi ^{[1
]}

Korosh, Shahriar ^{[2
]}

Hossein, Jalalifar ^{[3
]}

机构：

[1] Islamic Azad Univ, Dept Min Engn, Tehran Sci & Res Branch, Tehran 1477893855, Iran

[2] Amirkabir Univ Technol, Fac Min Met & Petr Engn, Tehran 158754413, Iran

[3] Shahid Bahonar Univ Kerman, Environm & Energy Res Ctr, Dept Petr & Min Engn, Kerman 7616914111, Iran

来源：

INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY | 2015年 / 25卷 / 05期

关键词：

Fully grouted rock bolts; Numerical modeling; Load transfer; Bolt profile;

D O I：

10.1016/j.ijmst.2015.07.002

中图分类号：

TD [矿业工程];

学科分类号：

0819 ;

摘要：

The purpose of this study is to investigate the role of bolt profile configuration in load transfer capacity between the bolt and grout. Therefore, five types of rock bolts are used with different profiles. The rock bolts are modeled by ANSYS software. Models show that profile rock bolt T3 and T4 with load capacity 180 and 195 kN in the jointed rocks, are the optimum profiles. Finally, the performances of the selected profiles are examined in Tabas Coal Mine by FLAC software. There is good subscription between the results of numerical modeling and instrumentation reading such as tells tale, sonic extensometer and strain gauge rock bolt. According to the finding of this study, the proposed pattern of rock bolts, on 7 + 6 patterns per meter with 2 flexi bolt (4 m) for support gate road. (C) 2015 Published by Elsevier B.V. on behalf of China University of Mining & Technology.

引用

页码：707 / 712

页数：6

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