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| Research on the Geological Condition of Karst Water Bursting Disaster in the Course of Tunnel Caving |
| BAI Ming-zhou, XU Zhao-Yi, WANG Lian-jun, WANG Meng |
| Beijing Jiaotong University, Beijing 100044, China |
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Abstract Research purples: In order to ascertain geology condition of karst water bursting disaster in the course of tunnel caving and give a technique foundation for the work of tunnel geology prediction.
Research methods: The paper got that the geological condition uncovered in construction of deep buried tunnel in karst area; the correlation of karst developing degree with the lithology and geological structure factors, the geological structure factors include layer thickness, fold shape, layer attitude and fault character; the correlation of karst physiognomy and underground water condition with tunnel karst water bursting disaster.
Research results: On the base of investigation in suit, the paper analyzed some tunnel projects of Yichang-Wanzhou railway in karst area.
Research conclusions: It is cleared that the possible place of karst bursting disaster has great relativity with some geology locality, such as lithological interface, separation plane of bed, inflection surface of fold and fault. Huge karst cave is very possible formed in this kind geology place. At the same time the principle of judging karst disaster danger segment in the course of tunnel construction is bought forward.
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Received: 20 November 2005
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2006, Vol. 23 
