基于伪随机序列的矿井电法监测系统
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摘要
为了深入研究回采工作面底板导水构造随采动过程的发育情况,以预防水害事故的发生,开发了底板视电阻率实时监测系统。系统采用低频交流电透视技术、伪随机多频同步发射技术、高精度全波形连续数据采集技术、工频抗干扰技术等,并通过井下光纤网络实现了井下无人值守、地面远程监控、电法数据实时成图的监测预警系统。现场试验表明,该系统可实现包括对采空区范围的工作面底板视电阻率的实时远程监测。
In order to deeply study the development of the conducting-water structure of working face floor with the mining process, and to prevent the occurrence of water accident, a real-time monitoring system of the apparent resistivity is developed.The system adopted low frequency AC perspective technology, pseudo-random multi-frequency signal synchronized transmitting technology, continuous high precision and full wave band data acquisition technology, and power frequency anti-interference technology, etc. By means of fiber-optic network in coal mine, the monitoring and warning system achieved underground unattended operation, ground remote control and real time data imaging. The application results showed that the system realized the real time remote monitoring of apparent resistivity under working face floor including goaf area.
In order to deeply study the development of the conducting-water structure of working face floor with the mining process, and to prevent the occurrence of water accident, a real-time monitoring system of the apparent resistivity is developed.The system adopted low frequency AC perspective technology, pseudo-random multi-frequency signal synchronized transmitting technology, continuous high precision and full wave band data acquisition technology, and power frequency anti-interference technology, etc. By means of fiber-optic network in coal mine, the monitoring and warning system achieved underground unattended operation, ground remote control and real time data imaging. The application results showed that the system realized the real time remote monitoring of apparent resistivity under working face floor including goaf area.
引文
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[7]李东林,姜振泉,杨栋梁.煤层底板音频电透视探测成果反映的底板阻水条件[J].地球科学与环境学报,2005,27(3):68-71.
[8]张军,王勇,秦洪刚,等.矿井音频电透视在矿井工作面探测中的应用[J].工程地球物理学报,2013,10(4):551-554.
[9]罗知亮,李志华,朱翔野,等.基于LabVIEW的2N伪随机信号在电法勘探中的应用[J].测控技术,2015,34(5):16-22.
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[11]程惠,任勇峰,王强.电源纹波的测量及抑制[J].电源技术,2012,36(12):1899-1921.
[2]边凯,李飞飞,牛磊.煤层底板承压水导升规律数值模拟[J].煤炭技术,2014,33(10):40-42.
[3]袁亮.我国煤炭工业安全科学技术创新与发展[J].煤矿安全,2015,46(S1):5-11.
[4]刘盛东,刘静,岳建华.中国矿井物探技术发展现状和关键问题[J].煤炭学报,2014,39(1):19-25.
[5]韩建国.神华智能矿山建设关键技术研发与示范[J].煤炭学报,2016,41(12):3181-3189.
[6]袁亮.煤炭精准开采科学构想[J].煤炭学报,2017,42(1):1-7.
[7]李东林,姜振泉,杨栋梁.煤层底板音频电透视探测成果反映的底板阻水条件[J].地球科学与环境学报,2005,27(3):68-71.
[8]张军,王勇,秦洪刚,等.矿井音频电透视在矿井工作面探测中的应用[J].工程地球物理学报,2013,10(4):551-554.
[9]罗知亮,李志华,朱翔野,等.基于LabVIEW的2N伪随机信号在电法勘探中的应用[J].测控技术,2015,34(5):16-22.
[10]何继善.三元素集合中的自封闭加法与2n系列伪随机信号编码[J].中南大学学报(自然科学版),2010,41(2):632-637.
[11]程惠,任勇峰,王强.电源纹波的测量及抑制[J].电源技术,2012,36(12):1899-1921.