基于钻孔成像观测的导水裂隙带高度确定方法研究  

Height determination of water flowing fractured zone based on borehole imaging observation

作　　者：翟志伟 孟秀峰 武志高 徐书恩 季长江 ZHAI Zhi-wei;MENG Xiu-feng;WU Zhi-gao;XU Shu-en;JI Chang-jiang(Shanxi Institute of Energy,Taiyuan 030006,China;Shanxi Coal Transportation and Marketing Group,Taiyuan 030006,China;Yi’an Lanyan Coal and CBM Co-mining Technology Co.,Ltd.,Jincheng 048000,China)

机构地区：[1]山西能源学院,山西太原030006 [2]山西省煤炭运销集团,山西太原030006 [3]易安蓝焰煤与煤层气共采技术有限责任公司,山西晋城048000

出　　处：《煤炭工程》2020年第11期89-93,共5页Coal Engineering

基　　金：山西省自然科学基金项目(201801D121029);山西省重点研发计划项目(201903D321080)。

摘　　要：针对七一煤矿9101回采工作面重组整合后的生产需求,依据煤炭开采相关规程,在利用经验公式和理论确定两带发育最大高度的基础上,结合矿井地质情况制定了钻孔成像观测方案,布置了4个观测钻孔和1个采前对比孔,综合分析不同深度段孔内原生裂隙和次生裂隙发育情况后最终确定9101工作面冒落带实际发育高度约为8.37m,覆岩导水裂缝带呈马鞍型发育形态,发育高度为30.74m,为9101工作面连续稳定安全生产提供了科学可靠的关键参数。According to the production requirements of Qiyi Coal Mine 9101 working face after coal mine integration,and the related coal mining procedures,the experience formula and theory is used to determine the maximum heights of the two zones,combining the borehole imaging observation of mine geology,4 monitoring boreholes and 1 pre-mining comparison borehole are constructed. After comprehensively analyzing the original fissures and secondary fissures development at different depth in the boreholes,it is finally confirmed that 9101 face caving zone actual development height is about 8. 37 m and the water flowing fractured zone in the overburden is saddle-shaped,and the height is 30. 74 m. The study provides scientific and reliable key parameters for stable and safe production of 9101 working face.

关 键 词：钻孔成像 导水裂隙带 冒落带 水体下采煤 

分 类 号：TD823[矿业工程—煤矿开采]