垃圾填埋场稳定性影响因素重要性分析

Analysis of the Importance of Factors Affecting Landfill Stability

将渗滤液高度作为垃圾填埋场稳定性的一个重要影响因素,利用双楔法计算填埋场滑移的稳定性。结合正交试验方法分析了渗滤液高度、填埋场高度、填埋场宽度、固体废弃物填埋坡角、固体废弃物重度、内摩擦角、粘聚力、复合衬垫层间最小摩擦角和最小粘聚力等九个因素对填埋场稳定性的影响,每个因素考虑七个水平,利用BP神经网络和传统分析方法计算出各种组合的安全系数,最后利用极差分析得出各影响因素的影响程度,并对其进行了排序,为对填埋工程的反分析以及对设计和试验方案进行优化提供了依据。

In this paper,the height of leachate is regarded as an important factor affecting the stability of landfill.The stability of landfill slip is calculated by double wedge method.Based on orthogonal test method,nine factors affecting landfill stability,such as leachate height,landfill height,landfill width,slope angle of solid waste,solid waste weight,internal friction angle,cohesion,minimum friction angle and minimum cohesion between composite liners,are analyzed.Each factor considers seven levels,and is calculated by BP neural network and traditional analysis method.The safety factors of various combinations are obtained.Finally,the influence degree of each influencing factor is obtained by range analysis and ranked,which provides a basis for back analysis of landfill engineering and optimization of design and test scheme.