Test Design and Construction Techniques for the Collapse Treatment of a Tunnel with an Extra-Large Section
(1 Chengdu Investigation and Design Institute Co. Ltd. of Power China, Chengdu 610072; 2 No.3 Engineering Corporation Limited of CR20G, Chongqing 400000)
Abstract：
Using the treatment of a chimney collapse at the portal section of a tunnel with an extra-large section as an example, and based on a field test as well as monitoring and measuring, this paper successfully solves the problem of drilling holes in an overhead fragmental/massive collapsed body by replacing the condulet with a self-drilling hollow anchor bolt and deals with the collapse based on proper support parameters, grouting volume and relevant construction methods.
WU Xue-Zhi- 1 Zhang-Shao-Hui- 1 Wang- Jian- 1 Xiao-Chun-Qiang- 2
.Test Design and Construction Techniques for the Collapse Treatment of a Tunnel with an Extra-Large Section[J] MODERN TUNNELLING TECHNOLOGY, 2016,V53(4): 148-153
2016, Vol. 53 