膨胀土渠道边坡监测数据分析与治理效果评价

以某膨胀土渠道边坡治理工程为研究背景，探讨了膨胀土边坡土体侧向应力、地下水位的变化规律，分析了边坡治理效果。监测结果表明：地下水位变化幅度与测点位置和降雨强度有关，降雨强度较小时，边坡下部的地下水位变化幅度较大；降雨强度较大时，边坡下部与上部地下水位变化幅度基本相同；坡体内土体侧向应力与土体重度、膨胀力、渗透力等密切相关，表层土体的侧向应力具有明显的季节性。根据监测数据和数值计算分析结果，认为水泥土换填 + 水平排渗管对膨胀土渠道边坡具有较好的治理效果。研究成果可为类似工程设计、施工与运行管理提供借鉴。

Monitoring data analysis and treatment effect evaluation of expansive soil channel slope

Taking an expansive soil channel slope treatment projects as the research background, the variation laws of lateral stress and groundwater level of soil are investigated and the effect of slope treatment is analyzed. The monitoring results show that the variation range of groundwater level is related to the measuring point location and rainfall intensity. When the rainfall intensity is relative small, the groundwater level in the lower part of the slope varies greatly. When the rainfall intensity is high, the variation range of groundwater level in the lower part of slope is basically the same as that in the upper part. The lateral stress of soil is closely related to soil weight, expansive force and seepage force, and the lateral stress of surface soil has obvious seasonality. According to the monitoring data and numerical calculation analysis results, it is considered that cement soil replacement combined with horizontal drainage pipe has good control effect on expansive soil channel slope. The research results can provide reference for similar engineering design, construction and operation management.