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《Coal Technology》 2018-01
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Application Research of Sonic Method and Peep Instrument in Broken Rock Zone Test in Deep Soft Rock Roadway

GAO Kun-peng;LI Xue-bin;CHENG Zhi-yuan;GAO Zhuo;ZHANG Xin;China University of Geosciences(Beijing);North China Institute of Science and Technology;  
Based on the return airway in the north wing of Hongqinghe mine,the sonic method and peep instrument were used to test the range of broken rock zone,and the supporting design was evaluated based on the test result.The result shows that:these two methods are applicable to the deep soft rock roadway; the cable length is longer than the range of broken rock zone,and the supporting design is reasonable.
【CateGory Index】: TD353
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