Research On Mining Subsidence Mearsurement Of 4~# Coal Seam And Mining Layout Optimization Of Protection High Voltage Power Tower In Coking Coal Mine

With the development of mining technology and equipment,increasing demand for energy,and coal mining rate is accelerating.Ground surface subsidence caused by coal mining issues of building(structure)buildings damaged more and more serious,therefore,to ensure that buildings are not damaged under the premise,to maximize the recovery of non-renewable coal mining-induced subsidence is an urgent need to address the key issues.This papers to Coking coal mine 8503 working face mining on ground high-voltage powered tower of damage for engineering research background,in on both at home and abroad mining subsidence,and high-voltage powered tower mining and mining reduction sank method and measures finishing summary of based,through theory analysis,and mining subsidence site measured and numerical simulation of research method,focus coal mine 4#coal mining caused of surface subsidence law,and optimal of mining layout and mining reduction sank method for research.Firstly,papers to 8503 face geological profile and the and high pressurePower Tower of location relationship,combined mining subsidence theory and site measured data of analysis,summary 4#coal mining subsidence law,determine out surface subsidence key technology parameter,to border angle value for 51.1°,to mobile angle value for 63.3°,maximum sinking angle value? for 87.6°,on high pressure Power Tower of effect degree for evaluation.Secondly,by presenting three different mining layout plan,theoretical analysis and numerical simulation method to determine reasonable coal-pillar width,the direction of working face and stopping mining line location,analysis of optimal layout optimization of mining scheme was proposed:perpendicular to the face in the power line to the layout.Finally,according to the 5#coal seam geological conditions face perpendicular to the high voltage line arrangement,given 5#subsidence area of coal mining working face layout plan,and inverse methods for additional cable protection of high-voltage electricity tower.Results of this study for the lower 3 layers of Coke coal mine(5#,8#,9#)provide important engineering decisions based on coal mining,while high-voltage towers on similar geological conditions of coal mining subsidence under control will also have a certain significance.