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

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.