Optimized design on outburst prevention and collection device and study on impact resistance performances
Yang Jianguo
Abstract：In order to more effectively prevent a gas blowhole phenomenon occurred during the slotting construction process with the high pressure water jet,an optimized design was conducted based on the conventional outburst prevention and collection device.After the optimization,a rubber pack hole sealing and water injection pressurized working method was applied to the blowout prevention and collection device.The weight of the device was reduced by 50％ than the conventional device.Meanwhile,a hinge mode open design was applied to the end of the collection part,thus the opcration would be easier and the process would be simpler.Also after the optimization,the impact resistance performances of the blowout prevention and collection device were experienced and test.The optimized device could have good impact resistance performances and the max accumulated impact impulse of the optimized was 1 188 N · s.Site experiment results showed that the borehole volume was reduced about 39％ ～67％ than the conventional device.The gas over limit accident could be prevented basically and the optimized device could have better sealing performances and more strong stability.
Keywords：gas prevention and controlbursthole phenomenonhigh pressure water jetoutburst prevention and collection deviceimpact resistance performances
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 64-69 )