Shaanxi Coal Group Hongliulin Mining Co., Ltd.
Shaanxi Haoxing Kunda New Energy Technology Co., Ltd.

西北地区的侏罗系风化基岩具有结构疏松、孔隙度大、渗透性强和裂隙发育等特点,是天然富水层,也是该地区煤矿井田突水灾害的主要来源之一,科学准确地划分风化基岩区域,分析研究风化区赋水情况对于矿井水防治具有重要意义。NEMV技术以其特有的对于地层应力变化属性特征的探测能力,精确刻画红柳林北二盘区南翼风化基岩的分布区域,结合区域含水性分布特点,探索风化基岩与其富水性之间的关系。结果表明,风化基岩主要分布在中部、西南和东北方向,其中东北部最薄,面积最小,且风化严重;西南部最厚,中部面积最大,其分布范围与富水情况密切相关,为北二盘区工程采掘安全提供科学依据。

The Jurassic weathered bedrock in the northwest region has the characteristics of loose structure, large porosity,strong permeability and fracture development, so it is a natural aquifer and one of the main sources of water inrush disastersin coal mines in the region. To scientifically and accurately divide the weathered bedrock area, and analyze and study thewater occurrence in the weathered area is of great significance for the prevention and control of mine water. NEMV technology, with its unique ability to detect the characteristics of stratigraphic stress change attributes, can accurately depicts the distribution characteristics of weathered bedrock in the south wing of the Beierpan area of Hongliulin coal mine. Combined withthe study of regional aqueous distribution, the relationship between weathered bedrock and water enrichment is explored. Theresults show that the weathered bedrock is mainly distributed in the central, southwest and northeast directions, among whichthe northeast is the thinnest with the smallest area and serious weathering; the southwest is the thickest, the central area isthe largest, its distribution range is closely related to water richness. Our study provides a scientific basis for the excavationsafety of the Beierpan project.