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公路路基边坡中地下水水位变化对其稳定性有十分明显的影响。回水变动区沿江路路基含水量由于受到地表渗流和江水水位变动的影响而变化比较大,由此产生的地下渗流对路基边坡的稳定性造成很大威胁,直接影响到公路是否能够正常运营。通过理论分析,得到浸润线的简化计算公式,利用强度折减法对实际工程中的边坡进行稳定性分析,推导出土体性质、水位变化规律等因素与路基边坡安全系数之间的函数关系式,并根据分析结果提出沿江路路基加固方案,对实际工程具有重要参考价值。
The change of groundwater level in highway subgrade slope has a very obvious influence on its stability. The water content of Yanjiang subgrade in the backwater changing area varies greatly due to surface seepage and river water level fluctuation, and the resulting underground seepage will pose a great threat to the stability of subgrade slope, which will directly affect whether the highway can operate normally . Through the theoretical analysis, the simplified calculation formula of wetting line is obtained, and the stability analysis of the slope in the actual project is carried out by the strength reduction method. The functional relationship between the factors such as the nature of the soil and the variation of water level and the safety factor of subgrade slope is deduced , And according to the analysis results, put forward the reinforcement plan of the roadbed along Yanjiang River, which has important reference value for the actual project.