The impact and damage mechanism analysis of building caused by exploiting underground coal

Abstract

In the control of the mine disaster, the movement process of rock and surface which is caused by the underground mining is a very complex time - space phenomena. Besides that, because of the hidden, unexpected, complex and long-term of deformation of mining subsidence, deformation of mining subsidence of coal mining area has great potential threat to the construction. Disaster caused by underground coal mining is due to underground coal mining break the balance of the original mechanical of the underground rock, lead to the stress distribution and concentration of wall rock once more in the mined areas and especially lead to mass displacement, roof falling, wall caving and nicking, rock burst and a series of sabotage activities easily. If the mass destruction affects the normal life activities, property and production activities of human seriously, mine disaster of goaf is formed. Before making the mechanism analysis of scourge caused by underground coal mining, the impact and damage mechanism analysis of building caused by exploiting underground coal should be needed first, then make various types of mined areas to be reasonable and effective governance in order to reduce loss of life and cost caused by the disaster prevention and mitigation in underground mined area. Therefore the impact and damage mechanism analysis of building caused by exploiting underground coal is a reasonable method of making a reasonable solution to the contradiction between the protection of building and underground mining reasonably. at the same time it is a critical path to solve the problem of coal mining under buildings in China.