【摘要】 南水北调西线工程地处青藏高原东南部,规划三期工程从长江上游的通天河及其支流雅砻江、大渡河年总调水170×108m3,经输水隧洞穿越江河分水岭巴颜喀拉山入黄河上游,解决黄河上、中游地区严重的水资源短缺问题。本文在对调水区气象气候、水文、地貌、岩性构造等环境背景条件分析研究的基础上,初步论述了西线工程建设中将面临的主要地质灾害问题,如水库诱发地震、库岸再造和岸坡变形、多年冻土和季节冻土、泥石流和严重水土流失、深埋长隧洞的高地温、高地应力岩爆、涌水及碎屑流等。针对这些灾害问题和西线工程目前现状,提出了五点指导性防灾建议。更多还原

【Abstract】 Located in south-east of the Qinghai-Tibetan Plateau, the Project of Water Division from the South to the North via the Western Course is planned to divert 17 billions m~3 of water from Tongtianhe River, the upper reach of Yangtze River, and its branches Yalongjiang River and Daduhe River, and deliver the water via the tunnels across the watershed ridge of Bayankala Mountain to the upper Yellow River so as to solve the serious shortage of water source in northwestern region of China Which is planed in 3 construction stages and will be finished at the year of 2050, it will become the greatest water division project in the world Based on analyzing the environmental background such as meteorology, hydrology, geomorphology, geology and Neo-tectonics etc., the geologic hazards during construction of the Project in Western Course are discussed in the paper, which are earthquakes triggered by reservoirs, landslides and collapses of bank slope caused by cutting and reservoir water, freezing, thawing and frost-susceptibility of permafrost and seasonal frozen ground, debris flow hazards and serious water and soil erosions, and the high ground temperature, high ground stress and rock explosion, high pressure drained water and fault belt debris flow inner deep-seated long tunnels et al Five mitigation countermeasures are suggested according to surveying, prospecting and study situation of the Project Most of all, some professional studies such as the inter-relationship between different geological hazards and divisional engineering should be carried out for reducing and comprehensively controlling hazards, and promoting coordinate development of human engineering activities and environment 更多还原