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该矿煤层属缓倾斜煤层,主要探丈八及四尺煤。丈八煤瓦斯量为20立方公尺/吨,四尺煤瓦斯量采用30立方公尺/吨(因为方正式文件未来),故为超级瓦斯矿井。1.在井田开发上有下面两个方案:第一方案:是将四尺煤和丈八煤在生产的初期,完全单独开采。各有主井和付井,各有主要运输巷道,各有单独的通风系统,各有排水设备。这样在采矿部份,无论井巷投资和运输排水投资都相应增加了。后期俟瓦斯情况清楚后,再进行合采。第二方案:四尺煤和丈八煤初期单独采煤,单独
The coal seam is gently inclined coal seam, the main probe Zhang and four foot coal. Zhangba coal gas volume of 20 cubic meters / ton, four feet of coal gas using 30 cubic meters / ton (because of official documents in the future), so the super gas mine. 1. There are two plans for minefield development: The first plan is to separate the four-foot coal and the eight-foot coal at the initial stage of production. There are main wells and pay wells, each with major transport lane, each with a separate ventilation system, each with drainage. In this way, in the mining sector, investment in both roadway and transportation is correspondingly increased. After the late 俟 gas clear situation, and then carry out joint mining. The second program: four feet coal and Zhangba coal mining alone, alone