微型桩技术在堆积层滑坡应急处置中的应用——以湖北英山县石鼓寺滑坡为例

Application of Micropile Technology in Emergency Response of Accumulation Layer Landslides:Taking the Shigushi Landslide in Yingshan County,Hubei Province as an Example

滑坡在湖北黄冈地区每年新增地质灾害的数量中占比达80%,其中堆积层滑坡是主要类型。堆积层滑坡分布广泛、发生频率高、持续危害性大等特点给该地区地质灾害防治工作带来巨大挑战。微型桩技术具有工期短、见效快、占地少等优点。结合近年来微型桩在各地滑坡应急处置中的成功实践,本文在对英山县石鼓寺滑坡应急处置难点进行分析后,确定了采用微型桩先行支护的处置方案。滑坡数值模拟与位移监测数据证实了微型桩在黄冈地区堆积层滑坡应急处置中是可行的。该研究对黄冈地区应用微型桩技术处置小型土质堆积层滑坡具有很好的借鉴意义。

Landslides account for 80%of annual new geological disasters in Huanggang area of Hubei province,the main type of which is accumulated layer landslide.It brings great challenges to the prevention and control of geologic hazards in this area as its characteristics as wide distribution,high outbreak frequency of occurrence,and persistent hazards.Micropile technology has the advantages of short construction period,quick effect,and less land occupation.Combining with the successful practice of micropiles in the emergency disposal of landslides around the world in recent years,this paper determines the disposal plan of using micropiles as the first support after analyzing the difficulties in the emergency disposal of the landslide of Shigushi in Yingshan County.The numerical simulation of landslide and displacement monitoring data confirm that the micropile is feasible in the emergency disposal of accumulated layer landslide in Huanggang area.This study is a good reference for the application of micropile technology in disposal of small soil accumulated layer landslides in the Huanggang area.