| 孟祥武,李宏阶,沈杰,屈晓明,姚蔚.绢云母片岩顺层岩质滑坡在长期降雨条件下变形机理研究[J].矿产勘查,2024,15(S2):260-267 |
| 绢云母片岩顺层岩质滑坡在长期降雨条件下变形机理研究 |
| A study on the deformation mechanism of sericite schist bedding rockslide under long-term rainfall conditions |
| 投稿时间：2024-06-30 |
| DOI：10.20008/j.kckc.2024s2035 |
| 中文关键词: 顺层岩质滑坡 模型试验 绢云母片岩 降雨条件 |
| 英文关键词: bedding rockslide modeling test sericite schist rainfall condition |
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| 中文摘要: |
| 为了揭示绢云母片岩地区顺层滑动破坏滑坡演化与致灾机理，选择竹山县中医医院南边山体滑坡为背景开展地质力学模型试验，模拟滑坡在遭遇 10 a一遇、 20 a一遇、 50 a一遇降雨强度时的响应情况，分析孔隙水压力、土压力的变化规律，揭示长期降雨运行条件下重大灾变滑坡致灾机理，为对重大工程灾变滑坡预测和防治提供理论基础。通过滑坡地质力学模型试验结果表明:在降雨条件下孔隙水压力具有一定滞后性，孔隙水压力增加到一定地步后将趋于稳定；在不同降雨强度作用下，滑坡后缘断面的土压力变化较大，占断面变化总量的 77. 5%，滑坡中部断面土压力变化量次之，占 22. 5%。 |
| 英文摘要: |
| To uncover the evolution and disaster-inducing mechanism of landslides caused by bedding sliding in the sericite schist area，a geological mechanics modeling test was conducted using the landslide to the south ofZhushan County Traditional Chinese Medicine Hospital as the test object. This test simulated the response of thelandslide under rainfall intensities that occur once in 10，20，and 50 years. By analyzing the changing patterns of pore water pressure and soil pressure，the disaster-inducing mechanism of major catastrophic landslides under long-term rainfall conditions was revealed，providing a theoretical basis for predicting and preventing catastrophiclandslides in major projects. The results of this test on the landslide show that under rainfall conditions，pore water pressure exhibits a certain level of latency and tends to stabilize after increasing to a certain level. Under the actionof different rainfall intensities，the soil pressure at the frontal section of the landslide changes significantly， accounting for 77. 5% of the total change across multiple section. While the variation of soil pressure at the middlesection of the landslide accounts for 22. 5%. |
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