容易自燃煤层大倾角综放工作面回撤期间防灭火技术

Fire prevention technology during withdrawal of fully-mechanized caving face with large inclined angle in easy spontaneous combustion coal seam

针对宝鸡秦源煤业有限公司M303综放工作面煤层发火期短、工作面倾角大等防灭火不利因素,坚持超前防控为主的治理策略,根据工作面不同通风方式条件下的发火特点,采取减少浮煤、封堵控氧、阻化降温、快速回撤等防治技术,消除了工作面回撤期间的煤层自燃隐患。

There are many disadvantages of fire prevention and extinguishing in Baoji Qinyuan Coal Industry Co., Ltd., including short period of coal seam ignition and large angle of working face, and so on,the engineers adhere to the strategy advance prevention and control, according to the combustion characteristic of working face of different ventilation conditions, the prevention and control techniques such as reducing coal floating, blocking and controlling oxygen, preventing and reducing cooling, and rapid withdrawal, have been adopted to eliminate the hidden danger of spontaneous combustion of coal seam during the withdrawal of working face.