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CAO Jianjun, WANG Zhonghua, YANG Huiming. Research on Extraction Technology of Pressure Relief and Outburst Prevention of Pre-drilling Floor Rock Lane in Deep Coal Lane Strip[J]. Mining Safety & Environmental Protection, 2019, 46(6): 14-19.
Citation: CAO Jianjun, WANG Zhonghua, YANG Huiming. Research on Extraction Technology of Pressure Relief and Outburst Prevention of Pre-drilling Floor Rock Lane in Deep Coal Lane Strip[J]. Mining Safety & Environmental Protection, 2019, 46(6): 14-19.
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Research on Extraction Technology of Pressure Relief and Outburst Prevention of Pre-drilling Floor Rock Lane in Deep Coal Lane Strip

  • 1. Anhui University of Science and Technology, Huainan 232001, China;

  • 2. CCTEG Chongqing Research Institute, Chongqing 400037, China;

  • 3. State Key Laboratory of the Gas Disaster Detecting, Prevention and Emergency Controlling, Chongqing 400037, China

More Information
  • Received Date: February 26, 2019
  • Revised Date: November 06, 2019
  • Available Online: September 13, 2022
    Graphical Abstract
    • Abstract
  • In order to prevent geostress dominated coal and gas outburst in deep coal roadway, the effects of stress and gas on the mechanical properties of coal and rock mass, as well as the mechanism of deep dynamic disasters were analyzed. The mechanical characteristics of coal and gas outburst in deep coal roadway driving and the non-unipeak stress distribution and evolution process of surrounding rock partition fracture in deep roadway were studied. The expressions of deep roadway rupture zone, outer boundary and pressure relief influence range were given. It proposed outburst prevention method, which can release pressure of the overlying coal rock mass and can drainage the gas of the coal roadway through the layered borehole. The reasonable spatial position of the unloading rock roadway was determined by numerical simulation and successfully applied. The application shows that the reasonable location of the pressure relief floor is from 8 m to 12 m below the bottom floor of the coal roadway, the pressure relief effect of overlying coal strata is remarkable, and the pressure relief and outburst prevention effect is obvious in coal lane strip, which realizes the safe and rapid drilling of coal roadway.
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    • References (16)
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