The Mechanism And Parameter Optimization Of Roadway Relief Groove Based On Hongshiyan Coal Mine

Kick drum is a universal phenomenon mine roadway deformation. Severe floor heave adirect impact on the production of coal mine safety and roadway, to mine with a hugeeconomic losses. Mechanism of floor heave country has achieved some results, but due todifferent geological conditions in which the roadway, the floor heave mechanism is different,the end of the roadway drum is an important mechanism of coal mining technologychallenges. To solve this problem, this paper Hongshiyan mine1240612407return air andreturn air trough trough as the background on the roadway floor heave mechanism werestudied. Rock samples were collected at the scene, in the laboratory on the roadway coal, roofand floor rock rock physical and mechanical properties of the test. Determination of mineralcomposition of coal, rock roof and floor rocks. Application analysis of mechanical propertiestesting machine MTS coal, roof and floor rock rocks. Through the establishment of themechanical model to analyze the mechanism of floor heave, measured on the bottom of thedrum through the field verification mechanism to determine its accuracy. And the proposedrelief groove bottom drum control method, while the bottom of the drum to monitor thesituation, comparative analysis and control of relief relief groove bottom drum effect.Meanwhile by FLAC3D software to simulate the actual deformation of roadway supportunder the original conditions designed to simulate the60kinds of relief groove excavationprogram, and program management at the end of each drum effects were analyzed andcompared, and the excavation unloading after notching effect on the floor heave control.Through the simulation relief slots for relief groove parameters were optimized analysis,the relief groove in the original excavation at the bottom of the drum of the largest reliefgroove than other locations in the roadway excavation governance kick drum effect; under theabove conditions, relief groove depth is constant, the same as in other conditions, the relief groove width in a range larger, the amount of floor heave smaller; relief groove width must,relief groove depth increases within a certain range, the amount of floor heave smaller.Finalized under simulated conditions, treatment works best kick drum groove relief programsfor12407Hongshiyan mine return air slots.