Main Engineering Geological Problems of Active Faults in the 1st Stage Project of Western Line for Transfering Water from Southern to Northern China
The first stage of the project, with an elevation of 3 500 m, which transfers water from the upper Yangtze River into the upper Yellow River, is located at the east edge of Qinghai - Tibet Plateau where the regional geological conditions are very complex, active faults are distributed over the project zone, strata are strongly folded and tectonic movements are frequently developed. Through ETM and exploring in site, analyze the distribution and the activity of active faults, evluate faults influences on the stability of deeply buried long tunnel. Sangrima Fault, Xianshuihe Fault and South Gande Fault have strong influence not only on the stability of tunnels but also on the regional tectonic stability of the project. Under high tectonic tress soft rock creep and big distortion are frequently developed. Water invasion, debris flow, collapse and paroxysmal dislocation of active faults are discussed in the paper.
transfering water from southern to northernwestern line projectfaultdeeply buried long tunnel
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NSTL
万方数据
维普
