深部岩体断层滞后突水多场信息监测预警研究

doi:10.13722/j.cnki.jrme.2015.0994

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Abstract Prevention and curing of delayed water bursting in rock fault are extremely difficult. Multiple field information monitoring and warning on delayed water bursting in deep rock fault in Wanglou coal mine were carried out. The source and conducting channel of ground water were analyzed. The delayed water bursting in fault during the mining process was divided into different stages. The temporal and spatial ranges of monitoring and warning were determined and the monitoring thresholds of temperature field and seepage pressure field were divided according to the theory of key water resisting layer and geophysical prospecting results，so that the identification criteria for monitoring and warning were established. Accurate and effective assembling of sensors was fulfilled by connecting them in series into monitoring units and plugging the drilling holes into sections using the returning slurry technique. Furthermore，the online monitoring on surface was fulfilled by taking advantage of the optical fibre monitoring system. Results showed that the extension of fissures in fault was effectively controlled by the water resisting coal wedge，which reduced the transmissibility of fractured fault zone.

Key words： rock mechanics fault hysteretic water bursting monitoring and warning multiple field information monitoring threshold identification criteria

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.0994 OR http://www.rockmech.org/EN/Y2015/V34/I11/2327

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