深厚表土层建井的渗透稳定性模拟研究

STMULATION MODEL FOR STUDYING INFILTRATION STABILITY OF SHAFT FOUNDATION IN THICK AND DEEP SURFACE SOIL

通过对淮北海孜矿第四系底部含水层向矿井泄水的模型模拟研究，探讨了深厚表土层建井（井筒）的渗透稳定性．讨论了在第四系底部含水层突水状态下，地下水的渗流运动规律、底部含水层土体的渗透变形方式、临界水力坡降以及渗流对井筒的稳定性影响，为从水动力作用角度去分析黄淮地区井筒破裂原因提供了地质－物理模型，同时也是对深埋土体中的有关工程渗透稳定问题的有益尝试．

Stability of a shaft in thick and deep surface soil is studied when a bottom aquifer of Quaternary System is feeding water to Haizi Mine in Huaibei.The rules of ground water infiltration,deformation of soil in the bottom aquifer,the critical hydraulic gradient,the effect of infiltration on shaft stability are discussed,where water inrush from the bottom aquifer of Quaternary System takes place.A geology physical model is provided for quantitative analysis of fractures found in the shaftwall in Huang huai area from the view point of hydrodynamics.It is also a good attempt to study stability of projects with water infiltration in deep and thick surface soil.