| 巴河流域平推式崩塌机理研究及防治思路 |
| 投稿时间：2016-03-28 修订日期：2016-03-28 点此下载全文 |
| 引用本文：梁炯,谢忠胜,石胜伟,等.巴河流域平推式崩塌机理研究及防治思路[J].钻探工程,2016,43(10):25-29.LIANG Jiong,XIE Zhong-sheng,SHI Sheng-wei,et al. Study on Ba-river Basin Translational Collapse Formation Mechanism and Prevention Measures[J]. Drilling Engineering, 2016,43(10):25-29. |
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| 中文摘要:通过开展四川省巴河流域地质灾害的调查，共获得了崩塌地质灾害点11处，其中平推式崩塌为5处，占总崩塌数的45%。研究显示该类型的崩塌具有平推式滑坡相似的特征：坡体上部砂岩、底部夹层为泥岩；坡角近垂直；坡体后缘发育有平行坡面、出露于地表的裂隙，裂隙两侧封闭。强降雨时，雨水流入裂隙，产生的动水压和静水压，还有高水头产生的劈裂作用，致使裂隙的加速发育。上部的砂岩层沿着泥岩层向外推挤，从而产生临空面发生崩塌。灾害体会受水的影响，产生临空面—崩塌—再产生临空面—再崩塌。所以要根治该类型的崩塌隐患，治理措施应注重考虑防止地表水流进裂隙、遏制裂隙的发育。 |
| 中文关键词:平推式崩塌 破坏模式 地质灾害 巴河流域 |
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| Study on Ba-river Basin Translational Collapse Formation Mechanism and Prevention Measures |
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| Abstract:According to the geological disaster investigation on Ba-river basin of Sichuan Province, there are 11 collapses including 5 translational collapses, accounting for about 45% in total. Studies reveal that this kind of collapse has similar characteristics of translational landslide: sandstone in upper slope and mudstone at the bottom interlayer; slope angle nearly中国地质调查局地质调查项目“川东巴河流域地质灾害调查”（编号：1212011220171）、“大巴山区城镇地质灾害调查”（编号：121201019000150003） perpendicular; parallel slopes at trailing edge of the slope, fissures exposing to the surface and being enclosed on both sides. When heavy rain falls, rain flows into the fissures, which accelerates fissures expanding by hydrodynamic & hydrostatic pressure and splitting effect of high water head. The pushing out of upper sandstone layer on the mudstone layer results in free surface collapse. Therefore, the treatment measures should be paid more attention for such collapse, the prevention of water into fissures is very important. |
| keywords:translational collapse failure mode gelolgical disaster Ba-river basin |
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