黄土地区深基坑工程降水试验及地表沉降研究

Research of Dewatering Test of Loess Foundation Pits and Ground Settlement

以实际工程为依托,针对黄土地区的地质水文特点进行了基坑降水试验.经过方案设计和过程监测绘制了基坑中心位置处的降水漏斗及附近观测点地面沉降曲线,据此得出黄土基坑沉降变化趋势,并制定降水方案和基坑支护方案,经数值模拟分析及工程数据监测,该降水方案合理可行,为黄土地区深基坑工程提供数据和资料参考.

Based on the real cases,experiments of excavation engineering precipitation are carried out aiming at hydro- geological feature of Yinchuan District. Through design and process monitoring,the author draws precipitation funnel at the center position of foundation pit and the curves settlement observation near the ground at the center position of foundation pit,and gets settlement trend. Through numerical simulation and monitoring data,the dewatering scheme is reasonable and feasible.