织纳煤炭国家规划矿区煤矿开采技术条件分析

Analysis on Coal Mining Technology Conditions of National Planning Coal Mining Area in Zhijin and Nayong

通过对区内工作取得的大量基础性资料进行整理,系统分析了区内开采技术条件。认为该区矿床在自然流场下,与上、下含水带均无直接水力联系;顶、底板稳定性在横向上具有多变性;区内矿井多为高瓦斯矿井及煤与瓦斯突出矿井;除局部地区存在一、二级高温区外,其他均属于地温正常区;区内各煤层均为易自燃煤层-不易自燃煤层,煤尘具有爆炸危险性。

Through collating the amount of basic data by exploration, the mining technology conditions in the area are analyzed systematically. There is not direct hydraulic connection between the upper and lower water zone under natural flow field. The stability of the roof and floor are variable in the horizontal. There are almost highly gassy mines and the coal and gas outburst mines in the area. The coal mines belong to the normal temperature zones except high temperature zones by the first and second grade in some areas. The coal seams are almost spontaneous combustion seams and non spontaneous combustion seams, and the coal dust has explosive risk.