| 矿井电阻率法监测系统在采煤工作面水害防治中的应用 |
| |
| 引用本文： | 鲁晶津,王冰纯,李德山,段建华.矿井电阻率法监测系统在采煤工作面水害防治中的应用[J].煤田地质与勘探,2022,50(1):36-44. |
| |
| 作者姓名： | 鲁晶津 王冰纯 李德山 段建华 |
| |
| 作者单位： | 中煤科工集团西安研究院有限公司,陕西 西安 710077 |
| |
| 基金项目： | 陕西省自然科学基础研究计划项目(2019JQ-939,2020JQ-995)。 |
| |
| 摘 要： | 煤矿智能化、无人化开采迫切需要水害隐患地质透明化为其保驾护航。矿井电阻率法监测系统针对工作面回采过程中的水害问题，采用伪随机信号发射和全波形数据采集提高设备的抗干扰能力，采用电极接地条件一致性校正和监测数据归一化处理等手段压制假异常，采用时移电阻率成像实现水害隐患电阻率异常响应的识别和提取，通过监测工作面回采过程中顶、底板电阻率变化对水害风险进行判识，实现采动工作面水害隐患的地质透明化。结合矿井电阻率法监测系统近年来的井下现场试验，分别介绍其在顶、底板水害监测中的应用案例。井下试验结果显示，电阻率法监测可以有效捕捉顶、底板出水过程的前兆信息。但在实际应用中，矿井电阻率法监测系统依旧面临强电磁干扰以及采空区监测线缆难以保护等问题，并且采掘扰动对煤岩电阻率的影响机理研究不足，导致对电阻率异常进行分析解释时存在较大争议，还需要进一步开展相关研究工作。
|
| 关 键 词： | 矿井电阻率法监测 采煤工作面 底板水害 顶板水害 前兆信息 |
| 收稿时间： | 2021-10-29 |
Application of mine-used resistivity monitoring system in working face water disaster control |
| |
| LU Jingjin,WANG Bingchun,LI Deshan,DUAN Jianhua.Application of mine-used resistivity monitoring system in working face water disaster control[J].Coal Geology & Exploration,2022,50(1):36-44. |
| |
| Authors: | LU Jingjin WANG Bingchun LI Deshan DUAN Jianhua |
| |
| Institution: | (Xi’an Research Institute Co.Ltd.,China Coal Technology and Engineering Group Corp.,Xi’an 710077,China) |
| |
| Abstract: | The geological transparency of water disasters is in urgent need to serve the intelligent and unmanned mining of coal mines. Focused on the water disasters during mining in the working face, the mine-used resistivity monitoring system uses pseudo-random signal transmission and full waveform data acquisition to improve the anti-interference ability of the equipment. Electrode grounding condition consistency correction and monitoring data normalization are used to suppress false anomalies. Time-lapse resistivity imaging is used to identify and extract the abnormal resistivity response of hidden water hazards. The monitoring system is able to estimate the risk of water disasters by monitoring the resistivity changes of the roof and floor during the mining process of the working face, which becomes an important way to realize the geological transparency of water disasters. On the basis of the underground mine field tests of the mine resistivity monitoring system in recent years, its application in the monitoring of water disasters in the roof and floor is introduced respectively. The test results show that the resistivity monitoring can effectively capture the precursory information of the water inrush process in the mining roof and floor. However, in practice, the mine resistivity monitoring system still faces problems such as strong electromagnetic noises and difficulty in protecting the monitoring cables in the goaf. Furthermore, studies on the mechanism of the influence of mining disturbance on coal rock resistivity is insufficient, which leads to a controversy in the analysis and interpretation of resistivity anomalies. Further research is still needed. |
| |
| Keywords: | mine resistivity monitoring coal mining working face floor water disaster roof water disaster precursory information |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《煤田地质与勘探》浏览原始摘要信息 |
| 点击此处可从《煤田地质与勘探》下载免费的PDF全文 |
