三峡库区典型危岩形成机制及治理技术研究

发布时间：2018-01-24 18:13

本文关键词： 岩土工程危岩形成机制治理　出处：《重庆交通大学学报(自然科学版)》2017年08期 　论文类型：期刊论文

【摘要】：危岩是三峡库区分布广、危害大的常见地质灾害类型。研究了典型危岩的基本特征、破坏方式及形成机制,指出其破坏方式有坠落式、滑塌式、倾倒式3种类型,且危岩体破坏模式中有链式反应的影响。砂岩及泥(页)岩的强度和抗风化性能差异大,泥(页)岩因强度低、易软化、易风化而成为软弱基座,且破碎松脱之后形成凹岩腔,上部砂岩即成为危岩。研究表明:在正确分析危岩形成机制的基础上,在此类地区采取"人工清方+点锚+挂网喷浆+主动防护网"技术对危岩进行工程治理,效果明显。
[Abstract]:Dangerous rock is a common type of geological hazard in the three Gorges reservoir area. The basic characteristics, failure mode and formation mechanism of typical dangerous rock are studied, and it is pointed out that there are fall type and collapse type. There are three types of toppling type, and there is chain reaction in the failure mode of dangerous rock mass. The strength and weathering resistance of sandstone and mudstone are different greatly, and the mudstone is easy to soften because of its low strength. It is easy to be weathered and become a weak base, and the cavities are formed after breaking and loosening, and the upper sandstone becomes dangerous rock. The research shows that: based on the correct analysis of the formation mechanism of dangerous rock. In this kind of area, the technology of "artificial clear square point anchor and shotcreting active protective net" is adopted to control the dangerous rock, and the effect is obvious.
【作者单位】：重庆市涪陵区地质环境监测站;
【基金】：重庆市国土资源和房屋管理局2013年地质灾害防治项目(渝国土房管[2012]355号文批准)
【分类号】：TV221.2;TV697.3
【正文快照】： 0引言危岩是多组岩体结构面组合而构成,在重力、地震、水体等诱发因素作用下处于不稳定、欠稳定或极限平衡状态的结构体[1-2]。危岩体一般存在于高陡边坡及陡崖上,其失稳、运动而形成崩塌坠落,对周边建筑物及民众的生命财产安全构成威胁,是山区常见的地质灾害类型之一。近年来

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