物探方法在找水工作中的应用

本次物探找水应用音频大地电位法通过在地表测量和分析某些频段组合场Ef的信号特征,区分出异常电场,达到探测低电阻异常区。低频率曲线反映深部电阻率信息,高频率曲线反映浅部电阻率信息。甚低频电磁法测量某些参数的畸变,发现地下的良导体或磁性感应体的存在。圈定矿体、岩溶发育带,地下河,含水或矿化断裂带,隐伏构造,以及进行快速电阻率填图。电阻率测深法采用不同极距的视电阻率对应于不同深度电阻率值,由各测深点的不同极距视电阻率值,绘出断面等值线图,判断低阻带的空间分布及倾向特征,结合水文地质资料,推断含水区位置。     

电阻率测深探测红层中的地下水

为了解决红层地区的缺水问题,须探测和利用红层中的地下水．应用电阻率测深法能探测红层中的含水构造,但含水红层和非含水红层的电阻率差异较小,导致用电阻率测深法寻找红层地下水时分辨能力和可靠程度均较低,而采用反射系数（Ｋ）法解释电测深ρｓ资料,能提高ρｓ曲线的解释精度,从而提高了电阻率测深法的分辨能力和可靠程度,具有十分明显的地质效果．     

安固里淖内流区基岩地下水赋存特征及蓄水构造模式

安固里淖补给区岩性多为玄武岩或花岗岩。受地貌、岩性、构造、多期喷发旋回层、古风化壳和下伏碎屑岩层等多因素制约,玄武岩或花岗岩含水层富水性差异大,整体为贫乏,制约了张北县贫困区人民群众的生产生活。本文通过大比例尺地面调查、物探解译、钻探验证等手段,基于基岩山区蓄水构造概念,总结分析了安固里淖流域补给径流-侵蚀型、补给径流-接触型、断裂带集水蓄水型、含水岩组蓄水型四种地下水赋存类型。在玄武岩区采取以瞬变电磁法（TEM）为主,高密度法等为辅的勘探方法,找水的目标层位为砂砾岩和裂隙孔洞发育的玄武岩,二者在视电阻率上相比泥岩反映为次高阻和高阻。在花岗岩区采用电法勘查构造裂隙较为适合,目标层位为电阻率陡降段的线性构造区。通过地下水勘察实例,确定了玄武岩风化裂隙孔洞水、岩浆岩构造裂隙水、风化壳等层间裂隙水、碎屑岩孔隙裂隙水4个找水方向及适宜的开采方式。本文可为岩浆岩缺水区应急找水提供找水靶区与勘探方法参考。     

层状大地视真频参数测深曲线的反演

在Cole-Cole模型假设的基础上,用一种新的递推反演算法对无电磁偶合影响时的水平层状大地对称四极装王复电阻率测深曲线进行反演,得出了层状大地上视电阻率、视时间常数、视频率相关系数、视充电率的视真频参数测深曲线.与需要复电阻率频谱的反演方法不同,该递推算法只需要4个不同频率的复电阻率数据,大大减少了野外工作量.通过对几种层状介质模型反演计算,结果表明:视真频参数测深曲线能够反映出各地层介质的真频参数随深度的变化规律;综合利用视真频参数能确定层状介质的频谱特性,从而达到区分岩石性质的目的.     

深部矿井底板隐伏含水构造瞬变电磁探测应用

介绍了瞬变电磁法视电阻率计算和时-深转换基本原理;根据现场地质水文资料,并结合实际巷道工作面操作环境,应用PROTEM EM-47HP系统,对12051工作面底板开展隐伏含水构造探测,印证了该系统对低阻异常体敏感、定向性好、精度高的特点;利用BETEM后处理软件分析数据,经正-反演处理得到底板地层视电阻率断面图和顺层剖面图,初步确定了存在突水危险的隐伏含水构造异常区,为下一步钻孔查证提供了依据。     

广域电磁测深法研究

根据水平电流场源和垂直磁场源在半均匀空间地面的电磁场解析表达式,定义了广域视电阻率,建立1种新的频率域测深方法即广域电磁测深法。研究结果表明:采用广域电磁测深法可以在过渡带进行测量,即以较小的收发距探测到较大的深度;广域电磁法包括E-Ex广域电磁测深和E-Ez广域电磁测深等方式,每种方式各有其特点,而且都只测量1种物理量;广域电磁法与2n序列伪随机电法相结合还可以发展成2n序列伪随机信号-广域电磁法,不但探测深度大,而且效率高,广域电磁法可用于寻找火山岩油气藏、深部金属矿和工程电法勘探。     

羊拉铜矿里农与路农结合部物探方法试验研究

羊拉铜矿属大型铜矿,随着矿山的建成投产,矿区外围及深部矿产成为当前勘查与研究的主要对象。结合矿区工作条件、地质特征和岩矿石物性参数,在矿区已知剖面开展高频大地电磁法和激电测深试验研究工作。研究成果显示,试验剖面已知钻探工程控制的矽卡岩型氧化矿位于高频大地电磁法高、低电阻率异常过渡带和激电测深高视充电率异常部位;剖面中部未知区域为近水平状的低电阻率和高视充电率异常,推测为硫化矿引起。试验结果表明,高频大地电磁法和激电测深方法效果显著,适合在矿区外围及深部矿产勘查推广应用。     

弱含水地层青山组火山岩地下水分布规律及解决缺水问题探讨

白垩系青山组火山岩是弱含水岩层,但在有利的岩性与构造的作用下,可以形成相对富水地段,通过物探固定小MN装置测深法与地质分析相结合,已打出一批好机井,从而解决了该区严重缺水问题。     

直流电法在山区找水中的应用

在工作区进行水文地质调查的基础上,垂直目标布设了3条电阻率法勘探剖面。运用电阻率联合剖面法配合电测深法,测量并绘制了视电阻率曲线图和等值线断面图,准确地确定了井位。经过钻探验证,出水量十分理想,取得了良好的找水效果。     

垂直磁偶源频率域电磁测深法一维正演及响应特征

为了探究磁偶源频率域电磁法的测深能力,本文以垂直磁偶源频率域电磁剖面装置为例,从垂直磁偶极子在一维层状介质的Z方向磁场公式出发,在低感应系数条件下推导了视电导率的表达式,最终实现了垂直磁偶源频率域电磁测深法的一维正演；然后通过对典型层状模型进行一维正演模拟,分析了磁偶源频率域电磁测深法的响应特征。研究结果表明：通过同时减小发射频率和增大收发距并保持频率与收发距平方的乘积不变能够实现电阻率测深,属于频率和几何测深联合方式,可见该方法能够准确地反映地下介质视电阻率的垂向变化信息。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that