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煤矿冲击地压监测预警技术新进展

Practices and monitoring method of static loading dominant type mir e strata pressure bump in shallow depth mine

  • 摘要: 为促进冲击地压监测预警水平的提高和监测预警新技术的推广,阐述了6种冲击地压监测预警技术分类方法及相应分类结果,探讨了冲击地压监测预警在监测参量、预警阈值、测点布置、数据分析等4个方面存在的困难,指出了冲击地压监测预警在监测范围、监测参数、监测方式、预警参量等4个方面的技术要求,分析了震动场、应力场联合监测技术和"全频广域"震动监测技术,最后介绍了"全频广域"震动监测技术应用案例。结果表明,震动场、应力场联合监测技术和"全频广域"震动监测技术在监测范围、监测参数、监测方式和预警参量等方面能够满足冲击地压监测预警技术要求,具有广阔的应用前景。

     

    Abstract: Accoding to the shallow depth mine pressure burmp danger area.statc loading igh concentration.no roof activity pressure bump danger features, basedon Gushan Mine as an engieeing backgrcund.the paper theoreticaly determined the types of the mine pressure bump o.cured and pointed out the main leading roleof the concentrated static loading. Aastep by step evaluation ,step by step disersion and combined inspection wereconduced on the concentrated staticleading with he seismic cCT 'technology.numerical simulation.site measuremert and other nethods.The resuits showe that the concentrated loading was provided by the roof of the shallow depth single layer magmatic rock.the mine pressure bump case was occure with no dynanicloadig souces pariciared and th mornioing ofthe mine ressure bunmp would be the static loading mainly.Before the mining operation conducted.,the seismic CT delecion resutis showed that afer the mine pressure bunp occurrd,the high concentrated area of the statcloading would be existed sti. During the mining proc.ess the realtime monioring of the static lading coul oe ftted with the high mine pressure bump danger area revealed by the numeical simulaton. The dynanicloading information proided by the micro seismic and earth sound was appliedto inspect the monitoring results of the statcloading. The foor and sean fracturing were caused by thecoal mining face pushing forwar.the disclapse rof and highconcentrated static loading.

     

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