Treatment techniques for +990 Karst ofDazhiping Tunnel of Yichang-Wanzhou Railway

2009, Volume 11, Issue 12

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Strategic Study of CAE >> 2009, Volume 11, Issue 12

Treatment techniques for +990 Karst ofDazhiping Tunnel of Yichang-Wanzhou Railway

1. School of civil Engimeering,Beijing Jiaotong university, Beijing 100044, China;

2. China Railway 16th Group Co., Ltd, Beijing 100018, China

Received: 2009-10-30 Available online: 2009-12-15 09:10:52.000

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Abstract

This paper mainly introduced Yichang-Wanzhou Railway Dazhiping Tunnel DK133+990 karst excrescent body's hydrogeology characteristics, karst development scale, water inrush and mud burst processes and characteristics of high-pressure water-rich cavern. According to karst cave project, hydrogeology condition and water inrush and mud burst mechanisms, cave processing should comprehensively take many factors, such as construction and operation safety, ect. into consideration, and abide by the principle of "releasing energy to reduce pressure, reinforcing by grouting, supporting in advance and processing comprehensively" .

Keywords

Karst tunnel ; engineering and hydrogeology ; water inrush and mud burst ; comprehensive processing

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