Risk assessment of water outburst from coal seam floor of mining under pressure in Xiqu Mine
郝耀军
Hao Yaojun
山西西山煤电股份有限公司 西曲矿
随着矿井开采深度的不断增加,煤层所承受底板含水层的水压越来越大,严重威胁着矿井安全生产和职工生命安全。山西西曲矿03、2+3、4、7、8、9、10号煤层均为带压开采,煤层底板为奥陶系灰岩含水层,为确保矿井的安全开采,对矿井充水水源及充水通道进行研究,通过突水系数法、安全水头值计算法对煤层突水危险性进行合理评价。研究表明,各煤层带压开采范围内均属于开采安全区,制定防治措施后,可安全掘进。
With the continuous increase of mining depth, the water pressure of the floor aquifer in the coal seam is increasing, which seriously threatens the safety of mine production and the safety of workers. The No.3, 2+3, 4, 7, 8, 9 and 10 coal seams of Xiqu Coal Mine in Shanxi are all mining under pressure, and the coal seam floor is Ordovician limestone aquifer. In order to ensure the safe mining of the mine, the water filling source and water filling channel of the mine were studied, and the water outburst risk of the coal seam was reasonably evaluated by the water outburst coefficient method and the safe water head value calculation method. The research showed that all coal seams in range of the mining under pressure belonged to the mining safety zone, which could be safely excavated after formulating prevention and control measures.
带压开采底板突水突水系数安全水头值隔水层厚度
mining under pressure;floor water outburst;water outburst coefficient;safety water head value;thickness of aquifuge
主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会