Experimental study on dynamic law of gas emission from borehole
Abstract：In order to discuss further dynamic law of gas emission from borehole,coal bed simulator and measuring device of gas emission velocity during drilling process were devised,experimental schemes were prepared according to homogeneous design method,and simulation test were carried out using dynamic testing technique in laboratory.The research results show that dynamic testing technique can successfully achieve the biggest initial velocity rate which appears in initial 5 s during test process and augments with augmentation of gas adsorption pressure,the trend reflects change law of coal and gas outburst criticality.
Keywords：boreholegasemission initial velocitydynamic testing techniquelow index outburst
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)