西部矿区现代煤炭开采对地下水赋存环境的影响

Modern Coal Mining Affected to Underground Water Deposit Environment in West China Mining Area

为有效保护和开发我国西部生态脆弱区地下水资源,针对现代煤炭开采对覆岩结构及地下水赋存环境的影响,以神东矿区超大工作面综采为例,应用现代高精度地球物理探测与分析方法,建立了以高精度四维地震多属性数据为核心的多属性数据体,描述了采前、采中、采后至稳定状态下的采动煤层覆岩变化过程,提出了采动煤层的覆岩具有开放的多层渗流结构和层状自修复趋势,为西部地区现代煤炭开采技术条件下地下水资源保护提供了理论依据。

In order to effectively protect and develop the underground water resources in the ecological frail zone of West China Area, according to the modem coal mining affected to the overburden strata structure and the underground water deposit environment, taking the super large fully mechanized coal mining face in Shendong Mining Area as an example, a modem high precision geophysical detection and analysis method was applied to establish a multi attribute data volume with high precision 4D seismic multi attribute data as a core. The paper represented the overburden strata variation process of the seam mining under the conditions before the mining operation, in the middle period of the mining face, at the mining terminal period and the strata stabilized period. The paper pointed out that overburden strata above the seam mining would have opened multi strata seepage structure and layered self recovered tendency, which could provide the theoretical basis to the underground water resources protection under the modem coal mining technology in West China Area.