川藏公路102滑坡失稳因素与治理方案研究

Studies of factors influencing the stability of No. 102 landslide and controlling scheme at the Sichuan-Tebit highway

摘要: 川藏公路是西藏连结中国西南地区的主要通道。1991年6月发生的川藏公路102滑坡(古滑坡复活)严重影响着公路的畅通。2002年采用原路边坡锚拉桩板护坡方案进行整治,暂时解决了交通阻断问题,但经6年多的使用证明,整治效果不佳。从滑坡的成因、滑坡物质构成和影响因素分析,102滑坡仍然是一个不稳定的滑坡。经论证,隧道方案可以克服滑坡对道路的危害和威胁问题,达到畅通的目的。虽然该方案一次性投资较大,但建成使用后,由道路畅通带来的社会效益将是巨大的。因此,无论是从根治滑坡对道路的影响角度还是从社会经济效益角度,隧道方案都是一个工程价值较高的方案。

Abstract: The Sichuan-Tebit highway is a main thoroughfare connecting Tebit with South China. No. 102 landslide,happened at the highway in June 1991,had a severe impact on traffic. A scheme with the protection of the slope using the anchored sheet pile,was adopted in 2002 and had been utilized to solve the problem for the moment. However,the recent six-year experience clearly shows that this scheme is not very effective. Analyses on formation mechanism,material composition and influence factors,indicate t...