Research On Design Of Mining Scheme Under Railway Of â… for Lin Sheng Coal Mine

In improving Linsheng mineral resources recovery at the same time, in order to ensure that the surfaceâ… level national railway by small impact, need for railway exploitation under study, select the most reasonable mining scheme and parameters.This paper, by theoretical analysis proposed three possible mining scheme, namely the downhole all pieces fall method, Strip mining; Mined-out area filling method, Through comparing the different scheme, choose strip mining as LinSheng ore exploitation under the scheme of choice for railway, according to LinSheng coal industry square pillars, railways protection to protect pillar, fault, igneous rock, the scope of protection in industrial square pillars for the center, will be in the south was divided into six blocks section, north wing is divided into 8 pieces of section, according to each division of mining conditions of different mining width on leave wide strip mining; And on the coal pillar stability of inspection, and probability integral method for each block segments mining scheme of surface movement caused by deformation in expected, and with reference to the relevant state railway allows movement deformation regulation, each scheme of surface movement caused by deformation within the prescribed scope to as 30m,60m, 130m coal pillar width, for example, by FLAC3D finite difference program to three different stability of coal pillar width is simulated and analyzed.Strip mining coal problem solving railway press as a kind of special mining methods, and its control top ability with strong, reduce surface movement deformation, protect the ground buildings and without any increase in downhole additional investment under the premise of part such as coal produced many advantages, pressure can directly to mine brings remarkable economic and social benefits.