Research On The Coal Pillar Size Of Fully Mechanized Mining Face And The Support Technical Of Gate Entry In Hongmiao Mine

Based on site investigation and geological conditions about Hongmiao Mine, detecting the losing circle of fully mechanized face road and the surface displacement and stress. Combied the physical and mechanical parameters of coal and rock in the experimental test results and the initial ground stress, researched on the Coal pillar size of fully mechanized mining face and the Support Technical of gate entry in Hongmiao Mine by the method of classical theory analysis, scene experimental observations and computerized numerical calculation.We can confirm the geological environment at this area,by analyzing the six district’s geological conditions about Hongmiao coal.To make use of ZXZ20mine drilling imager to determine the size and state of the rock loose circle of headentry and tailentry.To monitor the surrounding rock pressure in the process of mining by KSE-III coal stress acquisition system.To measure the amount of surrounding rock deformation about two lane by cross bracketing method.All above work provided the basic data and the theoretical basis,in order to master the face of mining affect the stress distribution and deformation law.In the end,this paper determined a rational coal pillar size and the programs and support parameters about two lane under the conditions of the mine through the synthesized methods of site tests, theoretical calculations and numerical simulation.This paper provides a reference for Hongmiao mine to solve some problem,such as the maintenance difficulties and high recovery costs.