Gas Geologic Feature In The Northeast Of Yangquan Mine Area No.3Coal Seam

The subject investigated here is an Outburst coal seam. The main features were small, frequent,pressed and gas emitted, In the context of generally high gas content in coal seam, pointed out thatgas prevention and control of key areas to improve gas drainage and targeted, become the toppriority of mine production. This on survey region No.3seam gas geological conditions for hasresearch, using has past bursting spray out information of comparison, and mining face of trackobservation, and sampling test, and drawing analysis, gas geological research means and method,discussion has constructed conditions on gas assigned save of effect, stressed has gas assigned saveand corresponding constructed parts of corresponds to, pointed out that has seam segment rocksexual combination changes on gas assigned save of effect.Studies have shown：No.3coal seam gas occurrence imbalance,zoned-distribution,zonation.Becontrol by structure overlay and hydrogeology characteristic.There are two method for gas contentand pressure so high.Coal seam occurrence and retain are good.Shown in two aspects,coal hasstrong capacity keep from permeate and dissipation,high metamorphicand adsorptioncapacity.Survey region structure main small amplitude and short axis subsidiary，coal seam pitchfrom5°-10°，fracture undeveloped。Deformed soft coal undeveloped in survey region，but in somestructure section and coal seam section change，soft coal developed。Undeformed coal developed isthe reason blowout of gas。The search can improve the known law of gas geology and to providetechnical support to improve the relevance of mine gas prevention and control。...