填土与切坡影响下滑坡的特征与防治
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摘要
在云南山区,人们因生活需要而在边坡中上部堆放人工填土,坡脚进行人工切坡等改造,造成了大量由填土和切坡共同影响的滑坡。为保障当地居民的生命财产安全,以云南省保山市某地区一处此类滑坡为例,利用理论及软件分析该滑坡的地质、形态及稳定性等,得到H1与H2滑块在工况Ⅰ下稳定性系数分别为1.011和0.996,处于欠稳定状态;在工况Ⅱ下稳定性系数分别为0.981和0.97,处于不稳定状态。评价了滑坡的稳定性,确定了相应的防治对策,可为日后该类滑坡的治理提供借鉴经验。
In mountainous areas of Yunnan,people for living need to fill the soil on the top of the slope and cut the toe of slope,that causes a large number of landslides by the combined effect of fill and cut slope. To protect the life and property safety of local residents,taking the landslide as an example in Baoshan city of Yunnan province,analysis geology,morphology and stability of the landslide are analyzed by using the theory and software. Under the conditionⅠ,the stability coefficients of H1 and H2are1. 011 and 0. 996,in a less stable state; Under the conditionⅡ,the stability coefficients of H1 and H2are0. 981 and 0. 97,in an unstable state. The stability of the landslide is evaluated,and the corresponding preventive measures are determined. The conclusion can provide references for the control of such landslides in the future.
In mountainous areas of Yunnan,people for living need to fill the soil on the top of the slope and cut the toe of slope,that causes a large number of landslides by the combined effect of fill and cut slope. To protect the life and property safety of local residents,taking the landslide as an example in Baoshan city of Yunnan province,analysis geology,morphology and stability of the landslide are analyzed by using the theory and software. Under the conditionⅠ,the stability coefficients of H1 and H2are1. 011 and 0. 996,in a less stable state; Under the conditionⅡ,the stability coefficients of H1 and H2are0. 981 and 0. 97,in an unstable state. The stability of the landslide is evaluated,and the corresponding preventive measures are determined. The conclusion can provide references for the control of such landslides in the future.
引文
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[6]王静.地下水对边坡稳定性的影响分析[J].陕西建筑,2011,37总(196):42-44.
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