Study on Rockburst Potential in Tunnels Based on the AHP-FUZZY Method and In-Situ Tests
(1 Faculty of Engineering, China University of Geosciences, Wuhan 430074；2 Engineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, Wuhan 430074)
Abstract：
In this paper, the basic principle of the analytic hierarchy process and fuzzy mathematics is introduced, and the influential factors for rockbursts in tunnels are classified into six kinds of proneness factors hierarchically (C1～C6). Based on the analytic hierarchy process and fuzzy mathematics (AHP-FUZZY), the calculated results are applied to the analysis of the Shanghai-Kunming high-speed railway tunnel's proneness to rockbursts. In order to verify the accuracy of the AHP-FUZZY method in rockburst prediction, a typical tunnel section is selected to carry out the in-situ stress test, and rockburst potential is calculated and analyzed according to test data; the calculating results are in line with that of the AHP-FUZZY method. The rockbursts in the process of tunnelling are tracked and recorded, and the actual findings are identical to that of the AHP-FUZZY method and in-situ stress test, which reflects the effectiveness of the AHP-FUZZY method used for judging proneness to rockburst.
LI Bo-1,
2 ,
WU Li-1 etc
.Study on Rockburst Potential in Tunnels Based on the AHP-FUZZY Method and In-Situ Tests[J] MODERN TUNNELLING TECHNOLOGY, 2015,V52(1): 55-61
2015, Vol. 52 