Research Of Security Mining Technology For Coal-Pillar Below Railway Bridge

Mine exploitation creates the cap rock destroys, the rock layer migration and the surface settlement, Lead to it creates construction and the farmland and so on , path, pipeline, water body destruction, It affects to the industry and agriculture production, the transportation and lives of the people each aspect, it is a significant social question and the environment question.Fan Gezhuang mine is Kai Luan of backbone mine, The proportion occupying decisive position in development of Kai Luan , In now available workable reserves of coal, Fan Gezhuang of under the building presses the coal amount the proportion to reach 19%. Therefore the research mining settlement rule,From the multiple perspectives reduction mining harm,it safeguards Fan Gezhuang mine sustainable mining until the entire Kailuan sustainable development important content.This article take the Fan Gezhuang mine railroad bridge as the object of study, To Investigation Structure or present situation of Fan Gezhuang mine railroad bridge structure detailed and comprehensively, and has carried on the objective analysis to under the railroad bridge under mining and the general industry ,the civil construction mine different characteristic,and determined Fan Gezhuang under the ore railroad bridge mines coal feasibility by using three mines the theory and unifies the Fan Gezhuang mine geology situation.Through comprehensively analyzes the basic request which under the railroad bridge mines coal, and established under the bridge to mine coal the foothold currently, considered the long-term guiding ideology, proposed under the bridge mined coal all picks, remains supposes the coal column and the part mining technical plan, the application probability integral method has carried on the science estimate to the surface migration and the distortion,it according as on the actual mining coal method and study the rock layer destruction characteristic, the motion rule has carried on the analysis and obtained the comprehensive science data.Through three plan estimated data contrast and the analysis, and unifies Fan Gezhuang the coal the measured data, finally which determined under the bridge remains supposes. Based on remains supposes coal column mining determined,and further to the plan optimization design, remains supposes coal column mining had determined reasonable the width. At the same time, given the line, the bridge service plan. This article through the plan optimization which the railroad bridge coal column the Fan Gezhuang mine has realized the goal which under the railroad bridge the coal column mines and realized the goal which under the railroad bridge the coal column mines endly, and three mines coal for the same type mine pit provides the model has the remarkable social efficiency and the economic efficiency has the remarkable social efficiency and the economic efficiency.