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距“5·12”汶川地震震中映秀2.8km的都汶路老虎嘴崩塌体,是本次地震中岷江上游最具影响的一处次生灾害,规模巨大,性质特殊,其处治工程思路与一般工程设计更是不同。在认识该崩塌体本底条件的基础上,分析其形成、发育特性及未来发展趋势,提出并实施的固坡桩技术、安全备用平台就是其中两种有别于一般设计的特色工程。
The verge of collapse of the Laohuozui Dufu Road 2.8km away from the 2.8km Yingxiu earthquake, which hit the Wenchuan earthquake in the “May 12” Wenchuan earthquake, is the most significant secondary disaster in the upper reaches of the Minjiang River upstream of this earthquake. It has a large scale and a special nature. And the general engineering design is even more different. Based on the understanding of the conditions of this collapse body, the formation, developmental characteristics and future development trends are analyzed. The proposed solid-over-piling technology and safety backup platform are two special projects that are different from the general design.