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Chinese Journal of Rock Mechanics and Engineering. 2014, (S1) Core

DETECTION AND ANALYSIS OF HEIGHT OF WATER FLOWING FRACTURED ZONE IN UNDERWATER MININGChinese Full Text

GAO Baobin;LIU Yunpeng;PAN Jiayu;YUAN Tian;State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Henan Polytechnic University;Opening Project of Key Laboratory of Deep Mine Construction,Henan Polytechnic University;School of Safety Science and Engineering,Henan Polytechnic University;

Abstract: In order to accurately detect the height of water flowing fractured zone in overlying roof strata after the mining face has been mined and ensure that mining underwater is safe and reliable,empirical formula calculation, downhole plugging drilling section water injection（put） crack measurement system and drilling television detecting system are used to detect the development of water flowing fractured zone. Results show that,using the above three methods respectively,the heights of water flowing fractured zone,which are 25.24–36.50,26.83–28.33 and 25.50–29.20 m,are obtained. The results verify that using downhole plugging drilling section water injection（put） crack measurement system to detect the height of water flowing fractured zone is reasonable and reliable,and it not only provides a theoretical support for Sitai coal mining underwater,but also provides reference for other coals to detect water flowing fractured zone.
Keywords：

mining engineering; three zones of overburden strata; water flowing fractured zone; underwater mining; injection water leakage; boreholes television;

  • DOI：

    10.13722/j.cnki.jrme.2014.s1.111

  • Series：

  • Subject：

  • Classification Code：

    TD82

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