2015年4.29甘肃黑方台党川2#滑坡基本特征与成因机理研究

许强 彭大雷 亓星 董秀军 李骅锦 巨袁臻

许强, 彭大雷, 亓星, 董秀军, 李骅锦, 巨袁臻. 2016: 2015年4.29甘肃黑方台党川2#滑坡基本特征与成因机理研究. 工程地质学报, 24(2): 167-180. doi: 10.13544/j.cnki.jeg.2016.02.001
引用本文: 许强, 彭大雷, 亓星, 董秀军, 李骅锦, 巨袁臻. 2016: 2015年4.29甘肃黑方台党川2#滑坡基本特征与成因机理研究. 工程地质学报, 24(2): 167-180. doi: 10.13544/j.cnki.jeg.2016.02.001
XU Qiang, PENG Dalei, QI Xing, DONG Xiujun, LI Huajin, JU Yuanzhen. 2016: DANGCHUAN 2# LANDSLIDE OF APRIL 29, 2015 IN HEIFANGTAI AREA OF GANSU PROVINCE: CHARACTERISTICES AND FAILURE MECHANISM. JOURNAL OF ENGINEERING GEOLOGY, 24(2): 167-180. doi: 10.13544/j.cnki.jeg.2016.02.001
Citation: XU Qiang, PENG Dalei, QI Xing, DONG Xiujun, LI Huajin, JU Yuanzhen. 2016: DANGCHUAN 2# LANDSLIDE OF APRIL 29, 2015 IN HEIFANGTAI AREA OF GANSU PROVINCE: CHARACTERISTICES AND FAILURE MECHANISM. JOURNAL OF ENGINEERING GEOLOGY, 24(2): 167-180. doi: 10.13544/j.cnki.jeg.2016.02.001

2015年4.29甘肃黑方台党川2#滑坡基本特征与成因机理研究

doi: 10.13544/j.cnki.jeg.2016.02.001
基金项目: 

国家重点基础研究计划(973计划)项目(No:2014CB744703),国家杰出青年科学基金(41225011)资助

详细信息
    作者简介:

    许强(1968-),男,博士,教授,博士生导师,主要从事地质灾害评价预测与防治处理研究.Email:xq@cdut.edu.cn

  • 中图分类号: P642.22

DANGCHUAN 2# LANDSLIDE OF APRIL 29, 2015 IN HEIFANGTAI AREA OF GANSU PROVINCE: CHARACTERISTICES AND FAILURE MECHANISM

  • 摘要: 2015年4月29日早上7点55分,甘肃省永靖县盐锅峡镇党川村发生了小规模黄土滑坡,约5104m3失稳的黄土从黄河Ⅳ级台塬黑方台冲向黄河Ⅱ级台塬。滑坡后仅3h,再次产生较大规模的黄土滑坡,约35104m3黄土泥流冲向下游,形成长约780m,宽100m的堆积体,最大的堆积厚度17m,在党川段是少有的灾难性的滑坡。本文在滑前位移监测和裂缝分布变形研究的基础上,结合详细地质调查、低空摄影测量、现场工程地质测绘、含水率实验等手段,对党川2#滑坡的基本特征进行了分析,并形成滑坡发生及成灾原因初步认识。结果表明:(1)从时间上来看,党川2#滑坡共发生2次滑动,根据滑动模式和堆积特征上分析,第Ⅰ次相对独立,第Ⅱ次分为3轮滑动,共4轮滑动;(2)第Ⅰ次滑动区域面积8396m2,变形区域仅在台塬边较小范围内,滑前长期蠕动变形是第Ⅰ次滑动发生诱发因素;(3)第Ⅱ次滑动区域面积为27422m2,地表裂缝较少,滑前裂缝无明显位移变形,底部黄土的液化对台塬黄土滑坡的运动起了非常重要的作用,该次滑动滑距长、破坏强,具有突发性;(4)党川段开始发生大规模静态液化型黄土滑坡,并以落水洞形成滑坡边界,这对其他区段早期识别和监测预警研究具有重要意义。
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出版历程
  • 收稿日期:  2015-07-26
  • 修回日期:  2015-10-20
  • 刊出日期:  2016-04-25

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