分层总和法在排土场沉降量计算中的应用  

Application of Layered Summation Method in Calculation of Settlement of Dump Site

作　　者：孙发院 侯克鹏[2] 何美萍 SUN Fayuan;HOU Kepeng;HE Meiping(Yunnan Yarong Mining Technology Co.,Ltd.;Faculty of Land Resources Engineering,Kunming University of Science and Technology)

机构地区：[1]云南亚融矿业科技有限公司,云南省昆明市650039 [2]昆明理工大学国土资源工程学院

出　　处：《现代矿业》2022年第3期105-108,120,共5页Modern Mining

摘　　要：由于排土场堆排的物料为松散体,新进排土体未经机械设备压实,通常处于欠密实的状态,极易在上覆填土压重下产生沉降变形,从而达到相对密实的状态。为了准确计算排土场的沉降量,为排土场设计提供可靠依据,将土力学中计算地基沉降的分层总和法应用到排土场沉降量的计算中,利用竖直集中力作用下的附加应力计算方法和弹性体中的应力叠加原理,计算土体内任意点的附加应力,将排土场堆积体视为若干土层堆置而成,堆积体产生的沉降,即为各土层受上覆土层压重产生的沉降总和。Since the material dumped in the dump site is loose,the newly discharged soil has not been compacted by mechanical equipment,so it is usually in an under-compact state,and it is easy to cause settlement deformation under the pressure of the overlying fill,so as to achieve a relatively dense state.In order to accurately calculate the settlement of the dump and provide a reliable basis for the design of the dump,the layered sum method of calculating the foundation settlement in soil mechanics is applied to the calculation of the settlement of the dump.Using the calculation method of additional stress under the action of vertical concentrated force and the principle of stress superposition in elastic body,the additional stress of any point in the soil is calculated,and the dumping body is regarded as a stack of several soil lay⁃ers.Settlement is the sum of settlements caused by the overburden layer of each soil layer.

关 键 词：排土场 沉降变形 分层总和法 

分 类 号：TD804[矿业工程—矿山开采]