【作者】 姜国庆；

【导师】 程久龙；

【作者基本信息】 山东科技大学 ， 地球探测与信息技术， 2011， 硕士

【摘要】 随着煤矿开采技术的提高,开采深度越来越大,开采条件更加复杂,受承压水威胁日趋严重,突水事故发生的频率也在不断增加。因此,采用切实可行的技术手段开展矿井水文地质调查,为矿井突水预测、预报及矿井防治水提供可靠地质依据已成为保障矿井安全生产的必然选择。论文采用理论分析、数值计算和工程应用相结合的方法开展矿井瞬变电磁法数据处理方法及应用研究。在对矿井瞬变电磁法基本原理及其特点进行分析的基础上,推导阶跃脉冲电流激发下均匀导电全空间偶极装置的瞬变电磁响应,并将其与均匀导电半空间的瞬变电磁响应进行对比分析；分析矿井瞬变电磁法进行矿井水文地质调查的具体装置形式及施工方法技术,并结合现场应用对测量参数选取及技术措施等进行探讨。分析各种矿井瞬变电磁仪器系统观测参数,并分别给出其转化到处理参数[dBz(t)/dt]/I的换算表达式；通过实测数据的处理实验对比分析各种滤波方法的滤波效果；探讨磁感应强度计算方法,并选用对数域插值、积分的方式实现磁感应强度计算；通过实测数据计算,分析斜阶跃效应对全程视电阻率计算结果的影响；经过公式推导,给出全空间条件下偶极装置瞬变响应的核函数,将其与半空间条件下核函数曲线进行对比分析,并分别给出dBz(t)/dt和Bz(t)定义的全程视电阻率计算方法；对矿井瞬变电磁法时深转换技术进行研究,并通过实测数据的时深转换结果分析了应用效果。在理论研究的基础上,以Visual Basic语言为平台,充分利用基于COM组件的VB与Matlab混合编程技术和基于Automation的数据可视化技术,开发“矿井瞬变电磁法数据处理系统”,该系统具有良好的人机交互界面、数据处理、显示功能齐全。选择具有代表性的矿井工作面顶底板岩层含水性及巷道掘进头前方地质情况矿井瞬变电磁法探测实例开展工程应用研究,研究表明：本文所开发“矿井瞬变电磁法数据处理系统”实用性和稳定性较强,数据处理效果较好,矿井瞬变电磁法探测结果与实际地质情况吻合,为矿井水害防治提供可靠地质保障。更多还原

【Abstract】 With the advance of coal mining technique, mining depth is increase, geological condition is more complex, threat of confined water is becoming more serious, and frequency of water inrush accident is continuously increase. Therefore, adopting feasible technical means to investigate mine hydrogeology, and providing reliable geological basis for water inrush forecast and water hazard prevention become inevitable choice for mine safe production.This thesis adopts the method of combing theory analysis, numerical calculation and engineering application to study mine transient electromagnetic method data processing methods and its application. On the basis of analyzing the basal principle and characteristics of mine transient electromagnetic method, deduced dipole device transient electromagnetic response aroused by stepped pulse current in homogeneous electric conductive whole space, and did comparative analysis with transient electromagnetic response of homogeneous electric conduction half space; analyzed specific device layout and measure technique of mine transient electromagnetic method in mine hydrogeology survey, and discussed the choice of measure parameter and technical measures combining with field application.Analyzed measure parameters of various mine transient electromagnetic devices and systems, and respectively provided their conversion expressions to processing parameter [dBz(t)/dt]/I; comparatively analyzed effect of various data filter methods through processing experiment of actual measured data; discussed calculation method of magnetic induction, and choose the method of interpolation and integration in logarithm domain to achieve magnetic induction; through calculation of actual measured data, analyzed the effect of ramp step effect on all time apparent resistivity calculation result; through formula derivation, provided kernel function of dipole device transient electromagnetic response in whole space, comparatively analyzed it with kernel function curves in the condition of half space, and respectively provided calculative methods of all time apparent resistivity defined respectively by dBz(t) /dt and Bz(t); studied time to depth conversion technique of mine transient electromagnetic method, and analyzed its applied effect through time to depth conversion result of actual measured data.On the basis of theory study, chose Visual Basic language for development platform, took full advantage of mixed programming technique between VB and Matlab based on the COM subassembly and data visualization technique based on automation, developed "mine transient electromagnetic method data processing system", this system has perfect man machine interaction interface and complete data processing and display function. Chose representative cases of working face roof strata water-bearing property detection and driving face ahead detection for engineering application study, study result indicates that "mine transient electromagnetic method data processing system" developed in this thesis has perfect practical applicability and stability, and effect of data processing is good, exploratory result of mine transient electromagnetic method is mainly consistent with actual geological condition, and provides reliable geological guarantee for mine water hazard prevention.更多还原