某堆填土欠稳定高边坡抗剪强度参数取值研究

Study on the parameter values of shear strength for unstable high slope of fill soil

梧州市某楼盘在建筑安全影响范围内有一削坡形成的高度20~45 m的堆填土高边坡,存在较大滑塌安全隐患,需对该欠稳定高边坡综合整治处理。为取得符合实际的、经济合理的边坡设计抗剪强度参数,采用了综合法确定抗剪强度参数,即采用现场原位直剪试验、室内重塑土样试验、多元线性回归法等,综合分析确定欠稳定高边坡的抗剪强度参数。结果表明:采用综合法参数取值能优化边坡设计、缩短治理工期、节约治理费用,治理效果显著。

Within the scope of building safety impact of a certain real estate project in Wuzhou City,there is a high slope of 20-45 meters formed by slope cutting,posing a high risk of land collapse.Therefore,comprehensive treatment is needed for the unstable high slope.In order to obtain practical and economically reasonable shear strength parameters for slope design,comprehensive methods were used to analyze and determine the shear strength parameters,including on-site direct shear tests,indoor remolded soil sample tests,multiple linear regression methods,etc.Comprehensive analysis was conducted to determine the shear strength parameters for unstable high slopes.The results show that using the comprehensive method parameter values can optimize slope design,shorten the treatment period,save treatment costs,and achieve significant treatment effects.