Journal
ADVANCES IN CIVIL ENGINEERING
Volume 2020, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2020/5809385
Keywords
-
Funding
- National Natural Science Foundation of China [51604166, 41772299]
- Natural Science Foundation of Jiangsu Higher Education Institutions [17KJB440002]
- Qingdao Postdoctoral Research Project, China [2016130]
- Open Fund of Jiangsu Collaborative Innovation Center for Building Energy Saving and Construct Technology, China [SJXTBS1701]
- Research and Innovation Team Project of College of Civil Engineering and Architecture, Shandong University of Science and Technology, China [2019TJKYTD02]
Ask authors/readers for more resources
Numerical simulation tests were performed on the arch-bolt combined supported mining tunnel through an improved numerical simulation approach. The typical soft rock roadway was took as the background, and the influencing factors such as ground stress level, lateral pressure coefficient, and support type and parameters were considered. The failure mechanism of a semicircular roadway with two straight walls was analyzed; results showed that the arch legs' inward bending deformation and the arch-rock separation are the breakthrough of the global failure of the supporting system, and rock bolts breakage promoted the failure process. The effects of different controlling measures were analyzed including enlarging the bolt diameter, replacing the conventional bolts with energy-absorbing bolts, and setting arch locking bolts on the arch legs. The field test of the concrete-filled steel tube (CFST) arch-bolt composite support scheme was carried out in a high-stress soft rock roadway, and the results indicate the reliability of the main conclusions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available