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采用“U +L”型通风方式的放顶煤综采面 ,当尾巷横川连入老塘后 ,通过对采面各瓦斯集中涌出地点瓦斯浓度的跟踪测试分析 ,得出 :横川间距设定为 40米 ,尾巷处理瓦斯效果最佳且经济合理。采面尾巷横川间距改造缩短至 3 7.5米后 ,通过对尾巷处理瓦斯效果的反馈考察 ,进一步确认了这一结论的科学性和可行性 ,对今后放顶煤综采面瓦斯防治具有一定的借鉴作用。
The fully mechanized top coal caving face with “U + L” type of ventilation is adopted. After the tailrace crossing Yokogawa is connected with Laotang, through the tracking test and analysis of the gas concentration at each gassy gas gathering place, it is concluded that the Yokogawa distance setting Set at 40 meters, tail gas treatment of the best and economical. After the transformation of the tailrace Yokogawa space has been shortened to 3 7.5 meters, the scientific and feasibility of this conclusion has been further confirmed through the feedback investigation of the tail gas treatment of the gas effect, which has the certain effect on future gas prevention and control of the fully mechanized coal caving face The role of reference.