玲珑金矿深部岩爆发生机理分析

    An analysis on mechanism of rock burst during deep mining excavation in Linglong gold mine

    • 摘要: 玲珑金矿属于高地应力地区,岩体主要为硬脆性花岗岩。目前,该矿已进入深部开采,开采深度接近1000m,并将很快超过1000m。对此类矿床赋存条件的地下矿山,深部开采时会遇到岩爆问题。因此,岩爆的预报和防治,是该矿深部地压控制的重要内容。根据现场调查、电镜试验、室内岩石力学试验、CSIR岩体质量分级和现场地应力测量,分析了玲珑金矿深部岩爆发生机理,并提出了防治措施。

       

      Abstract: Linglong Gold Mine is in the high in-situ stress area.Rock mass is stiff and brittle granite.The Mine is a deep well mine now.The mining depth is more than 1000m and will exceed 1000m in the future.Rock burst will be a serious problem for the Mine during deep mining excavation.So the predication and prevention of rock burst play an important role in the control of deep ground pressure for the Mine.Based on the investigation,SEM,indoor rock mechanics experimentation,CSIR and measurement of in-situ stress,the author analyzed the mechanism of rock burst during deep mining excavation in the Mine and advanced prevention methods.

       

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