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首页> 外文会议>International symposium on geological engineering problems in major construction projects;Asian regional conference of IAEG >Failure mechanism analysis of consequent bedded slope in thick and rigid rock mass
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Failure mechanism analysis of consequent bedded slope in thick and rigid rock mass

机译：坚硬岩体顺层顺层破坏机理分析

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摘要

The Miaojia-dam hydropower station, located on the Bailong River in Koutou Ba Town, Wen county, Gansu Province,China, is initially designed as rock-fill dam with normal water elevation 800m, installed capacity 240MW and annual power generation 907 million K W·h. The main lithological character of the study area is identified as thick layered metamorphic tuff, where the river is running almost parallel with the rock formation, meaning the study area, i.e. the left bank of the Bailong River, is featured by bed- ding slope. Several landslides are also taking shape in the reservoir area. The paper, taking the massive Hejia Landslide in front of the dam as an example, analyzes the formation mechanism of slide-bending model that distorts and destroys the thick layered hard rock bedding slope. The analysis if made from perspectives of topography, Geostatic stress, lithological composition and free face condition basis of field survey and inves- tigation. Results show that high and steep terrain, the Geostatic stress with maximum principal stress running parallel with slopes and the existence of a deeply-rooted soft rock belt are the controlling factors creating the slide-bending model that deforms and damages the thick layered hard tuff slope.
机译：苗家坝水电站位于甘肃省温县寇头坝镇白龙河上，最初设计为正常水位为800m，装机容量为240MW，年发电量为9.07亿千瓦·的堆石坝。 H。研究区的主要岩性特征为厚层的变质凝灰岩，河流的流动几乎与岩层平行，这意味着研究区（即白龙河的左岸）具有层理坡度。库区也发生了几起滑坡。本文以大坝前的贺家滑坡为例，分析了滑转弯模型使厚层硬质岩层滑坡发生变形和破坏的机理。如果要从地形，地应力，岩性组成和自由面条件的角度进行分析，则是实地调查和研究的基础。结果表明，高高陡峭的地形，最大主应力与斜坡平行的静地应力以及根深蒂固的软岩带的存在是形成滑移弯曲模型的控制因素，该模型使厚层硬凝灰岩边坡变形和破坏。

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