Analysis of the Effect of Underground Coal Mining on the Bayueshan Tunnel
(1 China University of Mining and Technology (Beijing), 10083; 2 China Railway Fifth Survey and Design Institute Group Co., Ltd,Beijing 102600; 3 School of Public Affairs, Zhejiang University, Hangzhou 310058)
Abstract：
Affected by the mining of Xinsheng coal mine and Changrong coal mine, some cracks and chip off-falling occur at the Bayueshan tunnel of Chongqing-Chengdu expressway. In order to understand the impact of coal mining on the tunnel, the tunnel displacement and deformation caused by underground mining in different stages are calculated with probability integral method, the causes of tunnel and pavement damages and deformation of the left tube after full mining of coal resources are analyzed by taking the left tunnel tube as an example, and the recommended measures for tunnel maintenance and safety are proposed. The predicted results are basically consistent with the actual conditions of tunnel and pavement damages.
SUN Haoxuan1 LI Peixian1 CUI Ximin1 YAO Dehua2 XIAO Wu3
.Analysis of the Effect of Underground Coal Mining on the Bayueshan Tunnel[J] MODERN TUNNELLING TECHNOLOGY, 2019,V56(6): 99-106
2019, Vol. 56 