冲沟发育区厚砂岩组覆岩富水性特征及水力联系研究

金属矿山 ›› 2025, Vol. 54 ›› Issue (11): 258-265.

冲沟发育区厚砂岩组覆岩富水性特征及水力联系研究

朱　帅¹　慕　鹏¹　马　龙¹　陈　梁^2,3　孔　正³

1.榆林市榆神煤炭榆树湾煤矿有限公司,陕西榆林 719000;2.中国矿业大学煤炭精细勘探与智能开发全国重点实验室, 江苏徐州 221116;3.中国矿业大学矿业工程学院,江苏徐州 221116

出版日期:2025-11-15 发布日期:2025-12-02
通讯作者: 陈　梁(1989—),男,副研究员,博士,硕士研究生导师。
作者简介:朱　帅(1991—),男,工程师,硕士。
基金资助:
国家自然科学基金项目(编号:52104100)。

Research on Water-rich Characteristics and Hydraulic Connectivity in Overlying Strata of Thick Sandstone Formations in Gully-Developed Areas

ZHU Shuai¹　MU Peng¹　MA Long¹　CHEN Liang^2,3　KONG Zheng³

1.Yulin Yushen Coal Yushuwan Coal Mine Co.,Ltd.,Yulin 719000,China;2.State Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources,China University of Mining and Technology,Xuzhou 221116,China; 3.School of Mines,China University of Mining and Technology,Xuzhou 221116,China

Online:2025-11-15 Published:2025-12-02

摘要/Abstract

摘要： 针对工作面群过冲沟发育区因覆岩富水性及水力联系不明诱发其突水灾变难题,以榆树湾煤矿东翼 20118工作面及其邻近工作面群过冲沟区为工程实例,基于瞬变电磁探测技术,校验了供电脉宽、发射电流、线圈尺寸及叠加次数等关键参数对地层结构的适用性,分析了覆岩第四系松散层、侏罗系直罗组及延安组砂岩裂隙含水层的纵横剖面电阻率异常区分布特征,明晰了覆岩结构水力联系。研究结果表明:① 适用于榆神矿区冲沟区厚砂岩组地层的探测参数组合为供电脉宽10 m/s、发射电流强度100 A、发射线框尺寸2 m×2 m、叠加次数30次;② 冲沟发育区覆岩结构自地表至深部依次为第四系松散层、新近系保德组、侏罗系直罗组及延安组,且电阻分布呈现“低—中— 低—高”的电性变化特征;③ 整体而言,探测层位横剖面的全域视电阻率均在15~115 Ω·m,且侏罗系直罗组与延安组砂岩存在低阻异常区;④ 探测层位全域存在富水异常区4处,均为弱富水区,且直罗组砂岩至2-2煤顶板砂岩存在弱连通区域(1、2号区)与强连通区域(3、4号区)各2处。研究成果可为顶板水害防治及类似冲沟发育区覆岩富水性探测提供重要依据。

关键词: 冲沟发育区　瞬变电磁法　富水性特征　水力联系　顶级水害

Abstract: To address the challenge of water inrush disasters induced by unclear water abundance and hydraulic connec tivity in overlying strata during mining face clusters crossing gully-developed areas,this study focuses on the over-drainage area of the 20118 working face and its adjacent working face group in the east wing of Yushuwan Coal Mine as an engineering exam ple.Utilizing transient electromagnetic (TEM) detection technology,key parameters including power supply pulse width,trans mission current intensity,coil dimensions,and stacking frequency were calibrated for their applicability to stratigraphic struc tures.The spatial distribution characteristics of resistivity anomalies in Quaternary unconsolidated layers,Jurassic Zhiluo For mation,and Yan′an Formation sandstone fissure aquifers were analyzed,and hydraulic connectivity within the overlying rock structure was clarified.Key findings include:① Optimal detection parameters for thick sandstone formations in gully-developed areas of Yushen Mining District are:power supply pulse width of 10 m/s,transmission current intensity of 100 A,transmitter coil dimensions of 2 m×2 m,and stacking frequency of 30 times;② The overlying strata in gully-developed areas,from surface to depth,comprise Quaternary unconsolidated layers,Neogene Baode Formation,Jurassic Zhiluo Formation,and Yan′an Forma tion,with resistivity exhibiting a "low-medium-low-high" layered pattern;③ The apparent resistivity of the detected strati graphic cross-sections ranges between 15~115 Ω·m,with low-resistivity anomalies identified in Jurassic Zhiluo and Yan′an Formation sandstones;④ Four weakly water-enriched zones were detected across the study area,including two weakly connect ed zones (No.1 zone and No.2 zone) and two strongly connected zones (No.3 zone and No.4 zone) between Zhiluo Forma tion sandstones and the 2-2 coal seam roof sandstone.The results provide critical insights for roof water hazard mitigation and waterabundancedetectioninoverlyingstrataof analogousgully-developedregions.

Key words: gullydevelopment area,transient electromagneticmethod,water-richcharacteristics,hydraulicconnectivity, roofwaterhazard

中图分类号:

TD745

朱　帅　慕　鹏　马　龙　陈　梁, 　孔　正. 冲沟发育区厚砂岩组覆岩富水性特征及水力联系研究[J]. 金属矿山, 2025, 54(11): 258-265.

ZHU Shuai　MU Peng　MA Long　CHEN Liang, 　KONG Zheng. Research on Water-rich Characteristics and Hydraulic Connectivity in Overlying Strata of Thick Sandstone Formations in Gully-Developed Areas[J]. Metal Mine, 2025, 54(11): 258-265.

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