Study on Stability of Layered Roof Surrounding Rock Reinforced by Anchor in Rectangular Roadway

Abstract:

Under the assumptions of plane strain, vertical normal stress and shear stress distribution in surrounding rock of rectangular tunnels before and after installing anchor cable are studied. And according to the mechanics of materials, the formula of stress distribution in the roof is corrected. According to the corrected formula of the stress distribution, the dangerous points are found. And the dangerous point location does not change before and after installing anchor cable. It still locates in the middle and ends of roadway roof. Just the dangerous stress value decreases after installing anchor cable. There are the maximum tensile stress in the midpoint roof and the maximum shear stress on both ends of the roof.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 864-869
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.864
• Online since: September 2014
• Authors: Zhong Ming Zhao, Zhi Yuan Xi
• Keywords: Anchor Cable, Loose Circle, Rectangular Roadway, Roof Stability, Stress Distribution

References

[1] Panfeng Gou , Sijiang Wei, Sheng Zhang．Numerical Simulation of Effect of Horizontal Stresses at Different Levels onStability of Roadways [J]．Journal of Mining & Safety Engineering, 2010(2)：143-148（In Chinese）.

[2] Xiaojun Li , Ruifu Yuan , Xingdong Zhao . Numerical simulate on failure law of rectangular road[J]．Mining Engineering, 2008(2)：18-20（In Chinese）.

[3] Zhenlei Li , Yufeng Feng , Yongkang Sun, Pengfei Gao. Calculation of stress concentration factor of rectangularlaneway rims and support of laneways[J]．Mining Machine, 2010(19)：7-11（In Chinese）.

[4] Manchao He, He-ping Xie , Suping Peng , et al. Study on rock mechanics of deep mining [ J] . Chinese Journal of Rock Mechanics and Engineering , 2005, 24( 16) ： 2803- 2813（In Chinese）.

[5] Minggao Qian, Pingwu Shi. Mining pressure and strata control[ M] . XuZhou: China University of Mining and Technology press, 2003: 200- 201（In Chinese）.

[6] Liwei Chen, Zheng Tang, Kunyun Tian. Study on stability of coal roadway influenced by tectonic stress[ J] . Coal Mine Modernization, 2007, 76( 1) ：38- 39（In Chinese）.

[7] Zhimin Song, Zengqing Cheng, Shenghua Zhang. Deformation and control on roadway in soft rock located in Tectonic stress field [ J] . Ground Pressure and Strata Control, 2005, 22（4）: 48- 50（In Chinese）.

[8] Daixiang Tian. To determine the loose ring thickness of surrounding rock using the transform relation of function. [J]．HeNan：Henan coal, 1982（In Chinese）.

[9] Mingxiang Chu, Jingguang Yan. The determination and control of the loose ring thickness of mining roadway [J]．HeNan：Coal science and technology, 2003（In Chinese）.

[10] Hui Zhang. Application of Cable Support Technology in Taoshan Coal Mine[J]．Qitaihe. Coal Technology. 2009. （In Chinese）.