Earth surface subsidence caused by arbitrary underground mining

21st International Scientific Conference on Advanced in Civil Engineering "Construction - The Formation of Living Environment"

土木建筑工程

Makeeva, Tamara G.^1 ; Trofimov, Vitally A.^2

National Research Moscow State University of Civil Engineering, Moscow, Russia^1

Research Institute of Comprehensive Exploitation of Mineral Resources, Russian Academy of Sciences, Moscow, Russia^2

关键词: Conceptual approaches;    Gaussian probability;    Numerical algorithms;    Observational data;    Surface subsidence;    Underground construction;    Underground excavation;    Underground mining;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/365/4/042025/pdf
DOI  :  10.1088/1757-899X/365/4/042025

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Underworking of built-up areas, which often take place in the areas of deep mining of solid minerals, affect the surface structures located on these territories. Surface subsidence and associated with it inclination and stretching of the day surface lead to the damage of buildings, the rupture of pipelines, the disturbance of highways and railways. Such undesirable manifestations also occur during underground construction in large cities, where they are more pronounced due to the small depths of underground work. In many cases, the shape of the worked-out space in the plan can have an arbitrary shape unlike, say, the case of the development of coal seams, when this form is strictly regulated by the mining method used. In this case, recommendations have been developed for assessing the influence of underground excavations on the day surface, which will have to apply with large approximations for estimation the trough for an arbitrary form of mining openings during construction in urban conditions. The conceptual approach and the numerical algorithm for estimating the parameters of the day surface subsidence for an arbitrary in the plan system of excavations are considered in the article. In this case, the entire area in which the workings are located is divided into elementary cells, and the subsidence of the day surface for the entire excavation as a whole is represented as the sum of subsidence from the set of all these elementary cells. Within each cell, subsidence is described by the Gaussian probability integral. This approach is based on the generalization of numerous observational data.