中文摘要：

我国工程建设大规模的开展和极端气候影响导致膨胀岩土滑坡问题越来越多,而现有相关规范尚不能满足膨胀岩土滑坡治理工程的要求。收集广西44个膨胀岩土滑坡治理工程资料,先对3个典型的滑坡治理工程进行剖析并分析成败原因,指出滑动面和抗剪强度的合理确定是膨胀岩土滑坡治理成败的关键;然后统计分析广西膨胀岩土抗剪强度指标、地基水平抗力系数和岩层与砂浆的黏结强度;最后提出常规方法治理膨胀岩土滑坡应注重的技术要点:必须设置截排水系统且应满足相关膨胀土规范要求;削方减载在永久治理工程中应慎用;挡土墙设计应满足相关膨胀土规范要求且高度不宜超过3 m;抗滑桩锚固段需超过大气影响深度,成孔时应减少水对桩周岩土的软化;锚杆(索)支护应慎用,锚固段应超过大气影响深度,成孔必须干作业。

英文摘要：

As the large-scale development of engineering construction and extreme weather in Chian,numbers of swelling rock and soil landslide problem happened,but the related codes can't satisfy the requirement of swelling rock and soil landslide treatment. 44 engineering cases of swelling rock and soil landslide treatment are collected, firstly analyzing the success or failure reason to the three typical landslide treatment engineerings,pointing out that the reasonable determination of the sliding surface and shear strength are crucial to the swelling rock and soil landslide treatment;secondly statistical analyzing the shear strength index for swelling rock and soil of Guangxi, the foundation horizontal resistance coefficient and bonding strength within mudstone and mortar;finally putting forward the special rules of the conventional method used in swelling rock and soil landslide treatment:must setting up drainage system and should meet the codes for expansive soil;cutting and shedding load used in the permanent treatment should be careful;the designing of retaining wall should meet the codes for expansive soil, and should not be more than 3 meters height;the anchorage segment of anti-slide pile should be more than the influence depth of atmosphere,reducing softening by water to the rock and soil around pile when boring;the use of anchor supporting should be careful,and the anchorage segment should be more than the influence depth of atmosphere,hole should be dry-bored.