摘要
研究目的:对于黄土地区填土斜坡场地,如果在最初场地平整时没有对填土进行有效处理,则以后场地会出现各种地质病害,兰州碑林地质病害就是一处典型的黄土地区填土斜坡场地问题。本文通过对兰州碑林地质病害发生发展机理的分析,提出治理措施,并对治理效果进行评价。研究结论:(1)兰州碑林地质病害主要表现为填土体沿老地面蠕动变形,同时伴有地面不均匀沉降;(2)病害产生原因主要为场平时对填土没有进行有效处理,加之黄土自身强湿陷性,导致地面裂缝的产生,地表水大面积下渗,汇聚于填土与老地面接触带,继而引起地表变形;(3)鉴于地表水下渗是场地病害的主要诱发因素,故工程治理必须坚持"控排水为主,支挡工程为辅,地基处理断后"的原则,根据场地监测资料,本工程设置合理,治理效果明显;(4)填土斜坡场地一定要在最初场地平整时对填土进行有效处理,否则后患无穷;(5)本文对于类似的黄土地区填土斜坡场地病害分析及治理有一定的参考意义。
Research purposes： In the loess area of fill slope site, if in the initial site levelling without effective treatment on soil, after site will appear a variety of geological diseases, the geological diseases in Lanzhou Beilin is a typical loess area of fill slope site. By analyzing the development mechanism of Lanzhou Beilin＇ s geological disaster, this paper proposes control measures, evaluates the control effect. Research conclusions： （1）Lanzhou Beilin geological disease mainly is filling soil deformation along the old ground peristalsis, accompanied by uneven ground settlement. （2） The causes of diseases mainly field usually on the filling no effective treatment, coupled with the strong collapsibility, lead to ground surface crack, surface water area of infiltration, convergence in the soil the old ground contact zone, and then cause the surface deformation. （3） The infiltration of surface water is the main site of disease induced factors, so the project management must adhere to the ＂controlled drainage, retaining engineering subsidiary, foundation treatment after＂ principle, according to the field monitoring data, the project provided reasonable, control effect is obvious. （4） This paper points out that the filling of slope site must be processed effectively, to fill in the initial site leveling, otherwise no end of trouble for the future. （5） This paper similar loess soil has a certain reference significance for analysis and treatment of diseases of the slope site in the similar loess area.
出处
《铁道工程学报》
EI
北大核心
2014年第4期41-45,共5页
Journal of Railway Engineering Society
关键词
黄土地区
填土
斜坡
地质病害
分析
loess area
filling
slope
geological disease
analysis
