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在兰州新区地下综合管廊一期地基处理工程中,自重湿陷性黄土较厚,最深处可达20m,该黄土呈中等~严重湿陷性。为了验证注水增湿试验处理效果,设置9个实验区对增湿用水量、增湿水分扩散时间及增湿地表沉降进行了监测,并对数据进行了相关研究和分析,总结了不同间距和深度的试验区的注水时长、注水量,研究了注水过程中含水量及沉降变形的变化规律,对西北地区类似工程的处理提供了可借鉴的经验。
In Lanzhou New Area underground integrated pipe gallery first foundation treatment project, self-weight collapsible loess is thick, the deepest up to 20m, the loess was moderate to severe collapsibility. In order to verify the treatment effect of water injection humidification test, nine experimental zones were set up to monitor the water consumption, the diffusion time of humidified water and the wet ground settlement, and the data were studied and analyzed. Of the experimental area of water injection time, water injection volume, water content and sedimentation during the deformation of the law of change, similar projects in Northwest China to provide some lessons learned experience.