工程地质学报2026，Vol.34Issue(3)：1131-1139,9.DOI:10.13544/j.cnki.jeg.2024-0241
含黏富水砂层水砂溃涌地表沉陷规律试验研究
EXPERIMENTAL STUDY ON THE LAW OF SURFACE SUBSIDENCE INDUCED BY WATER-SAND INRUSH IN CLAYEY SAND AQUIFER
摘要
Abstract
A water-sand inrush disaster in thick,water-rich sandy layers during underground construction often leads to extensive surface subsidence.Current research on the spatial-temporal patterns and processes of surface subsidence caused by water-sand inrush remains inadequate.To fill this gap,this paper designed a large-scale visual model test box for water-sand inrush disasters,using wind-blown sand containing 1％,5％,and 10％clay particles.Experiments were conducted under different water pressures and clay contents to study the spatial-temporal characteristics of surface subsidence due to water-sand inrush.The results showed that water pressure mainly affected the initial rate of sand inrush but had little effect on the final shape of the subsidence trough.Clay content significantly influenced both the sand inrush rate and the final subsidence form:as clay content increased,the affected area and the total volume of displaced sand decreased,while the time required for subsidence stabilization increased.For sand with clay content＜5％,the subsidence trough exhibited a two-stage characteristic—a sharp drop followed by a slope;for clay content＞10％,the trough showed only a slope without a distinct steep drop section.Based on these results,a quantification function was established to describe the surface subsidence troughs caused by water-sand inrush,and its practicality was verified through a real engineering case.This study provides a reference for estimating the extent and volume of surface subsidence induced by water-sand flow in water-rich sandy layers.关键词
水砂溃涌/地表沉陷/模型试验/富水砂层/含黏砂层Key words
Water-sand inrush/Surface subsidence/Model test/Water-rich sand layer/Clayey sand aquifer分类
天文与地球科学引用本文复制引用
袁克阔,余本辉,范中鑫,庞扬扬,王有熙,于洪丹..含黏富水砂层水砂溃涌地表沉陷规律试验研究[J].工程地质学报,2026,34(3):1131-1139,9.基金项目
陕西省教育厅重点科学研究计划项目(资助号:22JS040),岩土力学与工程国家重点试验室开放基金项目(资助号:Z019021),陕西省自然科学基础研究计划项目(资助号:2023-JC-QN-0322),西京学院科研启动专项基金项目(资助号:XJ18T04).This research is supported by the Scientific Research Plan Projects of Shaanxi Education Department(Grant No.22JS040),State Key Laboratory of Geomechanics and Geotechnical Engineering(Grant No.Z019021),Chinese Shaanxi Province Natural Science Basic Research Program(Grant No.2023-JC-QN-0322)and Special Fund for the Launch of Scientific Research in Xijing University(Grant No.XJ18T04). （资助号:22JS040）
