The Maluping Mine Underground Mining Production Of Blasting Hole Network Parameters Optimization Research

In order to adapt to the demand of the mine safety and efficient production, thistopic Kailin Group in Guizhou Maluping mine as the engineering background, existingblasting technology in the mine with the method of the sector hole, the undergroundmining blasting hole net parameter optimization research.For small structure such as the Maluping ground phosphate rock mine, orebodydip Angle changeable and unstable immediate roof directly-dipping medium thickorebody mining, hole-net parameters optimization and the determination of miningmethod at home and abroad are a difficult problem. In addition, the status quo of theMaluping mine underground blasting may produce a certain number of large, and hadroot, and the single arrangement of blast hole stoping ore, this not only increased theblasting cost, also reduced the shovel equipment production efficiency, reducing theeconomic benefits of enterprises. So this topic through underground deep hole blastingin the hole net parameter optimization to improve the blasting effect, it is veryimportant that increase the shovel loading efficiency, reduce the mining cost ofproduction.In order to achieve this goal, according to the sublevel open stoping with cavinglaw of ground pressure and the requirements of stope roof management, the researchthrough the Maluping mine ore rock explosive analysis, analysis of mechanical modelof the mine hole mesh geometry parameters, charging and blasting parameters isoptimized, especially for ore-bearing rock unit explosive consumption, hole spacingand row spacing and hole plugging length of the four major parameters optimizationdesignAfter optimization, the research on the ping mine under phosphorus andphosphorus in the main chamber to do the scene of the corresponding stope blastingexperiment respectively, and to facilitate the contrast in the two experiments arecarried out in each room. And the scene of the stope blasting experiments achievedbetter results, compared with before optimization mining stope blasting on the one hand makes the stope blasting effect is stable and is easy to control, ore-bearing rockbroken blocks of explosive can be fully used; Reduced the number of stoping blastingon the other hand, optimize the mining stope blasting process, while reducing theupper seam "triangle" is in stress, high compressive stress on the roof, making it part ofthe ore body is more stable, not easy to happen roof caving, help phenomenon, caneffectively avoid the line workers in dangerous operations under the condition ofunstable roof, thus reducing the mine underground stope mining process in theconsumption of manpower and financial resources, improve the benefit of mineproduction and safety. Again on the one hand, for the two rows of stope blast holerespectively adopt vertical leaning to the upward sector hole and the inclined sectorhole, this is largely improved by a single salvo of hole before the mine stope laboriousand root of the problem.After blasting in underground stoping production process system optimization, onthe basis of the Maluping mine existing production blasting, can give full play to thepotential of the excavation equipment, and improve its working efficiency,1.5~2.0times greatly reduces the mining production cost, and zhe mine has brought largeeconomic benefit.