Expeirmental Reserach On The Mining Method Of The Complex Steep Narrow Vein

That the vein is narrow, soft, complex difficult[1]is difficult to mineall the time.The specialized mining studies should be carried out in orderto solve the problem of the type like that.First, the study on the mining method of the steep narrow veins inthe research situation and development trend at home and abroad need tobe done.Several efficient mining method and its application in the miningcome up.Secondly, the choice of the mining method is a multi-target,multi-factors decision-making process, using the gray theory and theanalytic hierarchy process（AHP） mining method optimization model.Using AHP to determine weights for the impact of the mining methodselection factors, and then using the gray relational decision-making tomake the optimization of the mining method. The mining method ispreferred is more realistic, with a structured, clear and logical, simple,scientific and rational, and many other advantages. Then it is applied tothe optimization of the Иштамберды Gold mining method.Theoptimization results is pillarless small sublevel caving.Thirdly,carried out non-pillar small sublevel caving to theapplication of narrow veins. the mining modes is that it uses medium-holeto mine, blasting parameters is studed in order to further optimize themining field of structural parameters. It is proved feasible that the steepnarrow veins used the medium-length hole blasting to mine.The gray relational decision-making-the analytic hierarchy processoptimization of mining method is well adaptability.The industrial testresults has been proved it is a good optimization method. The non pillarsublevel caving method is an effective method of mining such as themining method can be referenced for a similar ore body mining.