河南朝川矿一井突水因素分析

河南省汝州市朝川矿一井主采煤层二1煤底板隔水层薄、分布不稳定,底板灰岩承压含水层富水性强、水头压力高、补给来源丰富,开采至今已发生数十起突水事故,造成严重的经济损失。研究认为：矿井的主要充水水源为寒武系含水层,导水通道是断层、构造裂隙及采动裂隙,二1煤层底板隔水层仅在局部地段能起到隔水作用;矿井的充水方式主要是大气降水、地表水体通过石炭系和寒武系灰岩露头区渗漏补给,在煤层底板形成水头压力大的承压水而威胁矿井安全的。最后指出,在矿井生产中一定要严格遵守＂预测预报,有采必探,边探边掘,先治后采＂防治水方针。

Water Bursting Factor Analysis in Chaochuan First Coalmine,Henan

The floor aquifuge of the main mineable II1 coal seam is thin and unstably distributed in the Chaochuan First Coalmine,Ruzhou City,Henan Province.The floor limestone confined aquifer has strong water yield property,high head pressure and abundant source of replenishment.Since the production of the coalmine,several scores of water bursting have been happened and caused severe economic losses.The study considered that： the main water filling source of the coalmine is from the Cambrian aquifer,water conducted channels have faults,structural fissures and mining fissures,II1 coal seam floor aquifuge can only close off water in partial sectors.Coalmine water filling is mainly atmospheric precipitation and seepage of surface water through outcrops of Carboniferous and Cambrian limestone,thus threatening coalmine safety because of high head pressure confined water against coal seam floor.Finally the paper pointed out that in production has to follow close to the water controlling policy of ＂predicting,exploring before and while driving and mining＂.