基于相关性分析的大采高工作面导水裂隙带高度的定量表征  

Quantitative Characterization of the Water Flowing Fractured Zone Height in Working Face with Large Mining Height Based on Correlation Analysis

作　　者：张红卫 席国军 余智秘 张辰晨 丁自伟[2] ZHANG Hongwei;XI Guojun;YU Zhimi;ZHANG Chenchen;DING Ziwei(Shaanxi Binchang Hujiahe Mining Co.,Ltd.,Xianyang,Shaanxi 713600,China;College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China)

机构地区：[1]陕西彬长胡家河矿业有限公司,陕西咸阳市713600 [2]西安科技大学能源学院,陕西西安710054

出　　处：《矿业研究与开发》2024年第12期105-115,共11页Mining Research and Development

基　　金：国家自然科学基金项目(51874232);陕西省自然科学基础研究计划联合基金项目(2021JLM-06)。

摘　　要：为了准确获得大采高工作面的导水裂隙带发育规律及其最终高度,以胡家河矿401101工作面为例,采用断裂力学对导水裂隙带产生机理进行分析,得到大采高工作面导水裂隙带发育高度的影响因素,通过多元线性回归的方法得到了大采高工作面的预测公式,并采用数值模拟研究及钻孔冲洗液漏失量观测法对回归方程的预测结果进行验证。研究结果表明:采高、采深以及工作面斜长为导水裂隙带发育高度的主要影响因素,煤层倾角及顶板硬岩岩性系数为次要影响因素。根据3DEC数值模拟软件得出在工作面斜长为150 m、175 m、200 m、225 m时,导水裂隙带的最大高度分别为212 m、228 m、233 m、251 m,均发育至工作面上覆洛河组含水层底部;结合钻孔窥视及钻孔冲洗液漏失量观测法得到401101工作面实测导水裂隙带高度为226.43 m,裂高采厚比为22.32。通过不同方法对胡家河矿401101工作面导水裂隙带发育情况进行对比分析,验证了大采高工作面导高预测公式的合理性。In order to accurately obtain the development law and final height of the water-conducting fracture zone of the working face with large mining height, 401101 working face in Hujiahe Mine was taken as an example. The fracture mechanics was used to analyze the generation mechanism of the water flowing fractured zone, and the influencing factors of the development height of the water flowing fractured zone of the working face with large mining height were obtained. The prediction formula of the working face with large mining height was obtained by the method of multiple linear regression. The prediction results of the regression equation were verified by numerical simulation research and borehole flushing fluid leakage observation method. The results show that the mining height, mining depth and inclined length of working face are the main influencing factors of the development height of water flowing fractured zone, while the coal seam dip angle and the proportion coefficient of roof lithology are the secondary influencing factors. According to the 3DEC numerical simulation software, when the inclined length of the working face is 150 m, 175 m, 200m and 225 m, the maximum height of the water flowing fractured zone is 212 m, 228 m, 233 m and 251 m respectively, all of which develop to the bottom of the overlying Luohe Formation aquifer on the working face. Combined with borehole peeping and borehole flushing fluid leakage observation method, the measured height of water flowing fractured zone in 401101 working face is 226 m, and the ratio of fracture height to mining thickness is 22.32.Through different methods, the development of water flowing fractured zone in 401101 working face of Hujiahe Mine has been analyzed and predicted, which has verified the rationality of the proposed prediction formula.

关 键 词：导水裂隙带高度 覆岩运移 回归分析 大采高 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]