摘要
【目的】探讨综合物探技术在三维地质模型构建中的作用。【方法】以松阳县小西村滑坡为研究对象,通过地质雷达与高密度电法刻画滑坡地层信息,利用钻孔数据对反演结构进行修正,构建小西村滑坡可视化的三维地质结构体,并进行稳定性评价。【结果】①融合地质雷达、高密度电法及钻探资料,构建了小西村滑坡的三维地质结构模型;②该滑坡地层结构从上至下可分为含砾粉质黏土、强风化花岗岩与弱风化花岗岩三层;③滑动区域主要位于模型的右半边部分,其中位移量发生变化较大的位置位于潜在滑坡体的右上方,包含潜在滑坡体右上角的一部分,潜在滑坡体整体的位移量较小,滑坡整体的安全稳定系数为1.387。【结论】可以推断出潜在滑坡整体趋于稳定状态,局部处于不稳定状态,整体发生滑坡的可能性小。
[Purposes]This paper aims to explore the role of comprehensive geophysical exploration technology in 3D geological model construction.[Methods]Taking Xiaoxicun landslide in Songyang County as the research object,this paper describes the landslide formation information by geological radar and high-density electrical method,and uses borehole data to correct the inversion structure,and constructs the visualization three-dimensional geological structure of Xiaoxicun landslide,and carries out stability evaluation.[Findings]①The three-dimensional geological structure model of Xiaoxicun landslide was constructed by integrating geological radar,high-density electrical method and drilling data.②The stratigraphic structure of the landslide can be divided into three layers from top to bottom:pebbly silty clay,strongly weathered granite and weakly weathered granite.③Sliding region is mainly in right half part of the model,and the position of the change of displacement is larger in the upper right of the potential landslide,contains potential landslide in the top right corner of the part of a potential landslide displacement of the whole quantity is small,the safety of the whole landslide stability coefficient is 1.387.[Conclusions]It can be inferred that the whole potential landslide tends to be in a stable state,while the local area is in an unstable state,and the possibility of the whole landslide is small.
作者
王继凯
王伯林
孙强
伍剑波
张士铎
陈世仲
WANG Jikai;WANG Bolin;SUN Qiang;WU Jianbo;ZHANG Shiduo;CHEN Shizhong(College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Nanjing Geological Survey Center,China Geological Survey,Nanjing 210016,China)
出处
《河南科技》
2023年第20期92-98,共7页
Henan Science and Technology
基金
浙江省岩石力学与地质灾害重点实验室开放基金课题(ZJRMG-2020-06)。
关键词
综合物探
滑坡
三维地质结构
可视化
稳定性评价
integrated geophysical exploration
landslide
three-dimensional geological structure
visualization
stability evaluation
