摘要
调查区坡顶建(构)筑物中出现一系列的拉裂缝及下错裂缝,采用工程地质调查、地质过程分析、坡体结构分析的方法,通过综合的勘察手段,查明了填土的分布,通过地质过程分析,从裂缝形成演变的角度结合边坡的地质结构,分析了病害形成主要因素为高陡的地形、较厚的填方体、不利的地层接触关系及持续的车辆荷载,坡体处于蠕动变形阶段。建立三维地质模型,采用极限平衡法和数值模拟进行了变形区稳定性评价,认为1^#、2^#不稳定边坡基本稳定,3^#不稳定边坡表现为不均匀沉降,边坡应加强监测。根据监测结果采取进一步的治理,根据近一年的监测数据,边坡变形趋势减缓,各项指标均显示正常,为厂区的安全提供了科学的防治建议。
A series of tensile cracks and lower fault cracks appeared in the buildings(structures)on the top of the slope in the survey area.Comprehensive survey methods are applied to find out the distribution of the fill,including geological survey,geological process analysis and slope structure analysis.Through the analysis of geological process,combined with the geological structure of the slope from the perspective of crack formation and evolution,the main factors of disease formation are analyzed.High and steep terrain,thicker fill,unfavorable stratum contact and continuous vehicle load are the main factors,and the slope is during the creep deformation stage.A three-dimensional geological model is established,and the stability of the deformation zone is evaluated through limit equilibrium method and numerical simulation.It is concluded that the unstable slopes of 1^# and 2^# are basically stable,and the 3^# unstable slope is during uneven settlement,which should be monitored more closely,and further treatment should be taken according to the monitoring results.According to the monitoring data of the past year,the slope deformation trend has slowed down,and all indicators are normal,which provides a basis for prevention suggestions.
作者
张健
张立伟
Zhang Jian;Zhang Liwei(PowerChina Hebei Electric Power Engineering Co.,Ltd.,Shijiazhuang 050031,Hebei,China;Hebei Research Institute of Construction&Geotechnical Investigation Co.,Ltd.,Shijiazhuang 050031,Hebei,China)
出处
《岩土工程技术》
2020年第6期344-348,共5页
Geotechnical Engineering Technique
关键词
填土边坡
形成机理
病害分析
数值模拟
fill slope
formation mechanism
disease analysis
numerical simulation
