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中文摘要：
针对高瓦斯煤层综放工作面初采期间顶煤、顶板难以自行垮落造成的采空区瓦斯积聚和工作面瓦斯超限问题,提出深孔预裂爆破断顶治理综放面初采期瓦斯的技术方案。通过对预裂面和未预裂面瓦斯实时监测数据分析,研究了深孔预裂爆破断顶对综放面初采期瓦斯变化的影响。结果表明,3404综放面初采前采用深孔预裂爆破,使初采期瓦斯超限问题得到了有效治理,保证了工作面初采期间的安全生产。
英文摘要：
Aiming at the gas accumulation in goaf and gas exceeding the limit caused by the difficulty of top coal and roof caving during the initial mining period of fully mechanized top coal caving face in high gas coal seams, we propose an idea to control the gas of fully mechanized caving face in the initial mining period with deep hole pre-splitting blasting. Through analyzing the gas monitoring data of splitting face and without splitting face, the effect of deep hole pre-splitting blasting on the gas change during the initial mining period of fully mechanized caving face is studied. The result shows that before initial mining of 3404 fully mechanized caving face with deep hole pre-splitting blasting, the problem of gas overrun in early mining has been effectively controlled, and the safety production of the working face during the initial mining period is guaranteed.
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