摘要
近年来华北型煤田底板灰岩水通过垂向隐伏导水通道突水,导致淹井、淹面等水害事故时有发生。新集二矿受巨厚推覆体影响,三维地震勘探及钻孔勘探无法查明断层、陷落柱等垂向隐伏导水通道,煤层底板高承压奥灰含水层水害严重制约着矿井安全开采。实践表明,淮南矿区煤层底板突水水源主要来自奥陶系灰岩岩溶水,突水通道为隐伏的断层或陷落柱,矿井结合特殊的地质及水文地质条件,从防控理念、目标层位、钻孔间距和效果评价等方面总结提炼,形成了底板高承压灰岩水害防控关键技术,在条件类似的矿区具有推广意义。
In recent years,water from the bottom plate of North China coalfields has surged through the perpendicular hidden water-conducting channel,resulting in flooded wells,flooded surfaces and other water damage accidents from time to time.The Xinji No.2 mine is influenced by the huge thick pushing overburden,and the three-dimensional seismic survey and drilling survey can not identify the perpendicular hidden water-conducting channels such as faults and trapped columns,and the water damage of the coal seam floor with high pressure-bearing ash aquifer seriously restricts the safe mining.The practice showed that the water source of the coal seam floor underflow in Huainan Mine was mainly from the Karst water of the Ordovician limestone,and the underflow channel is the hidden fault or collpased column.The mine combined the special geological and hydrological geological conditions with the special geological and hydrological conditions,and formed the key technology to prevent and control the water damage of the high-suppressing limestone underflow from the prevention and control concept,target layer position,borehole spacing and effect evaluation,which was of great significance in similar mines.
作者
高生保
啜晓宇
朱印兵
朱先博
Gao Shengbao;Chuai Xiaoyu;Zhu Yinbing;Zhu Xianbo(Xinji No.2 Mine,China Xinji Energy corporation Ltd.,Huainan 232000,China;Hebei Coal Science Research Institute,Xingtai 054000,China)
出处
《煤炭与化工》
CAS
2020年第9期53-58,共6页
Coal and Chemical Industry
关键词
垂向隐伏导水通道
巨厚推覆体
目标层位
钻孔间距
高承压灰岩水
perpendicular hidden water channel
giant thick thrust overburden
target level,borehole spacing
high pressure-bearing limestone water
作者简介
高生保(1988—),男,青海民和人,工程师;通讯作者:啜晓宇(1982—),男,河北张北人,高级工程师。
