Design of Gas Collecting Device of Coalbed Methane Detector in Situ
Abstract：In recent years,gas has become the ＂first killer＂ of coal mine safety accident.The gas collecting device to seal by hydraulic packer in the end of the level of the pore.It is a great importance for prevent gas accidents.The equipment hydraulic seals the end of drilling by hydraulic packer,and it gathers gas by purely mechanical means.The indoor experiment and in situ experiment with the in situ gas detector show that this device can be applied in engineering practice.
Keywords：coalbed methanesub horizontal drillinghydraulic packergas collecting device
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)