西南某大面积高填方体局部破坏特征及原因分析  

Analysis of Local Damage Characteristics and Reasons of a Large Area High-fill Project in Southwest China

作　　者：谢春庆[1] 廖梦羽 廖崇高[1] 

机构地区：[1]成都军区空军勘察设计院,成都市610041 [2]中国民航大学,天津市300300

出　　处：《勘察科学技术》2015年第6期27-32,共6页Site Investigation Science and Technology

摘　　要：该文结合西南某大面积山区填方工程,通过对其边坡损毁、孔洞展布和排水系统损坏特征等方面的调查、试验和系统分析,得出了上述高填方体出现变形和破坏的主要原因是地下水渗透破坏、高地下水压力、地表水入渗潜蚀、冻融和降水冲刷共同作用结果,并提出了局部换填、孔洞和塌陷及时封堵等应急处治措施和截排水沟、填方体顶面覆盖粘性土层、换填或打仰斜排水孔引排地下水等永久性处理措施,取得了较好的效果。Combined with a large mountainous fill project in southwest China, through ting and systematically analyzing on the slope damage, hole distribution and the damag investigating, tese characteristics of drainage system, this paper obtains the main reasons causing the high hill deformation and destruction are the combined action of groundwater seepage failure, high-groundwater pressure, potential erosion of surface water infiltration, frost boil and rainfall scouring. This paper also proposes the emergency treatment meas- ures of local replacement, plugging holes and collapse timely, meanwhile, this paper proposes permanent measures such as intercepting drain, filling the cohesive soil covering the top surface of the body, and replacement or drilling inclined drainage holes to discharge the groundwater, which achieve better results.

关 键 词：高填方 边坡 渗透变形 地下水压力 冻融 

分 类 号：TU751.4[建筑科学—建筑技术科学] TU43