GEOLOGICAL SURVEY FOR FRACTURE ZONES IN TUNNEL
We have applied three methods of geological survey to grasp fracture zone in tunnel under construction, and compared the results of survey methods each other. The survey methods are 1) High resolution seismic refraction method, 2) Horizontal core boring, 3) TSP (Tunnel Seismic Prediction) system. In...
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Published in | PROCEEDINGS OF TUNNEL ENGINEERING, JSCE Vol. 9; pp. 71 - 76 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Japan Society of Civil Engineers
1999
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Subjects | |
Online Access | Get full text |
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Summary: | We have applied three methods of geological survey to grasp fracture zone in tunnel under construction, and compared the results of survey methods each other. The survey methods are 1) High resolution seismic refraction method, 2) Horizontal core boring, 3) TSP (Tunnel Seismic Prediction) system. In High resolution seismic refraction method, more accurate distribution map of elastic wave velocities is obtained as compared with conventional seismic refraction method, and the location of fracture zone can be estimated from the results. In TSP system, estimated location and width of fracture zone are nearly equal to the results of horizontal core boring. |
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ISSN: | 1884-9091 |
DOI: | 10.11532/journalte1991.9.71 |