乌海伊临220kV高压输电线50号塔基地下采空区的稳定性分析

STIBILITY ANALYSIS OF UNDERGROUND COAL MINING ZONE THROUGH YILIN ELECTRICITY LINE UNDER NO.50 TOWERBASE

摘要: 地下煤层开采由于采空范围大常常引起上覆岩体失稳。本文以伊临220KV输电线路经过的小煤窑开采区为例,通过对煤层开采引起的位移、张应力区、屈服区和应力重新分布的计算分析,指明了地表开裂和下沉的原因以及对工程的危害。

Abstract: The mine of underground coal bed offen leads to unstability of overburden rockmasses. The coal mine passed through YiLin electricity line is a example. By the calculation and analysis of displacement, tension stress zone, plastic zone and stress redistribution caused by the coal mine this paper points out the cause of ground split and sink and endangerment to engineering.