勘探深度

研究了均匀半空间电阻率和介电常数对高频电磁法（100kHz～50MHz）的勘探深度的影响。

Study on the depth of investigation changing with resistivity and dielectric permittivity of homogenous half-space in high frequency electromagnetic sounding method .

电极距由所要求的勘探深度决定。

The spacing is determined by the desired depth of investigation .

小框瞬变电磁法（TEM）的勘探深度

The penetration depth of transient electromagnetic method ( tem ) with small-size square loop

方法II结合勘探深度理论选择合适的数据提取频散曲线，提高了频散曲线的提取精度。

The method II improves the precision of extracting frequency dispersion curve by considering the theory of the depth of the Rayleigh wave exploration .

为了评价大地（岩石）导电性对勘探深度的影响，建立了一个地面找水模型，对NMR信号进行数值模拟。

In order to estimate the effect of the conductivity of the ground , a numerical simulation of the NMR signal is conducted .

由于合理地选取了采集、处理参数，面波勘探深度超过250m，取得了满意的勘探效果。

With just collecting and processing parameters , the depth of surface wave exploration is larger than 250 meters .

结果表明，改进后的仪器有效测频范围为200Hz～100kHz，勘探深度达400～500m。

The depth detection is up to 400 ~ 500 m with the efficient frequency range of 200 Hz ~ 100 kHz .

仿真结果表明，NMR信号的振幅可以评价含水地层的结构，但大地导电性的增强将导致勘探深度的降低。

The result of simulation indicates that formation of the aquifers can be estimated by the amplitude of the NMR signal , and the NMR measurements are , however , also sensitive to earth electrical conductivity which causes the decrease of exploration depth .

它的测线基距与勘探深度的比值可以达到1∶20以上，即1～2m的测线布置，勘探深度可达30～40m以上。

Its line length & penetration depth ratio can be as high as 1 : 20 , that is 1 to 2 meter line length configuration can provide a penetration depth of 30 to 40 meters .

EH-4电导率成像系统是一种混场源频率域电磁观测系统，具有轻便、高效、勘探深度大、分辨率高的特点。

EH-4 electrical conductivity image system is an electromagnetic observation system of hybrid field source in frequency domain which has most advantage character include portable , high-efficiency , high-resolution and deep survey .

长偏移距瞬变电磁法（LOTEM）的特点是发射器与接收器之间的距离大于或等于勘探深度。

Long offset transient electromagnetics ( LOTEM ) is characterized by the fact that the distance between transmitter and receiver is equal to or longer than exploration depth .

可控源音频大地电磁法（CSAMT）因具有勘探深度大、地形影响小、对低阻非常敏感、有效避免高阻屏蔽、分辨能力强、工作效率高等特点而广泛应用于隧道勘察中。

Controlled Source Audio-frequency MagnetoTellurics ( CSAMT ) is widely used in the tunnel survey due to deep exploration depth ; topographic impact on small , low resistivity is very sensitive and effective shield to avoid high resistance and strong resolution , high efficiency characteristics .

注意研究合理的勘探深度和网度；

Pay attention to study reasonable prospecting depth and density of network ;

铁路客运专线地基勘探深度的探讨

Exploration for Surveying Depth of Railway Passenger Dedicated Line Foundation

高频垂直磁偶极子电磁场勘探深度的研究

Study on investigation depth under high frequency electromagnetic fields caused by vertical magnetic dipole

我们已讲过勘探深度随测量排列极距的加大而增大。

We have already stated that the depth of investigation increases with the spacing of the measuring configurations .

本文对地电阻率法中两个常用的基本概念&勘探深度和探测范围进行了理论探讨和计算，分析了电法勘探中关于这两个概念的若干问题和不足。

Two fundamental concepts & detective depth and detective range mostly used in apparent resistivity method have been studied theoretically .

该仪器具有发送电流大、关断时间短、勘探深度大等优点。

The instrument has such merits as transmission of large quantities of current , short cut-off time and great exploration depth .

该方法与常规的同类物探方法相比，在勘探深度和分辨率均有较大的提高。

Compared with the other geophysical methods , the exploration depth and resolving power of this method have a greater improvement .

理论分析和数值模拟都说明了该方法能够有效地提高直流电阻率法的勘探深度。

The theoretical analysis and simulating calculation show that the SEM can efficiently increase the detecting depth of the DC electro-exploring method .

这片油田是由迄今为止钻探最深的油井发现的，海床下勘探深度超过9.4公里（近6英里）。

The field was found by the deepest oil well ever drilled , reaching more than 9.4km almost six miles below the sea bed .

该方法利用相邻道的同一频率的瑞雷波的相位差，计算出该频率的瑞雷波在相应的勘探深度下的平均波速。

In the method , the mean velocity of certain exploration depth can be calculated making use of the difference of phase from consecutive seismic channels .

时间域航空电磁法具有良好的水平分辨能力，便于解释，效益高，有效勘探深度大等特点，因而得到了持续的发展。

Time domain airborne electromagnetics ( AEM ) with excellent horizontal accuracy , ease of interpretation , effective cost , and good depth of effective exploration etc. has significant development .

在反演的基础上，着重研究提高勘探深度的方法，通过增大激发脉冲矩和加大均匀磁场来进行反演试验。

Based on the inversion , we focus on the ways to improve the depth of exploration , and the testing is done by increasing exciting pulse moment and uniform magnetic field .

在几千米的勘探深度范围内，该方法可以使地震勘探的精度由相对精度用绝对精度来表示；使分辨率由十几米提高到2～3米；

This method can replace relative precision with absolute precision in several kilometer depth seismic exploration , it can raise the resolving power from over decade meters to 2 ~ 3 meters .

提出可控源音频大地电磁测深法具有勘探深度大、抗干扰能力强、工作效率高等优点，是目前比较好的一种地热田勘查方法。

CSAMT has the advantages of a deep exploration , a large anti-interference capability , high working efficiency and so on . So it is a better method of G.F. survey at present .

试验证明了通过增大激发脉冲矩来提高勘探深度是可行的，而通过加大均匀磁场来提高勘探深度的方法还需要做进一步的研究。

The test proves that it is feasible to improve the depth of exploration by means of increasing exciting pulse moment , and the method which improves exploration depth by means of increasing uniform magnetic field needs further research .

近年来，随着石油勘探开发深度的不断拓展，各种先进的钻井技术的出现，进行井壁稳定性的研究越来越受到重视。

In recent years , with the increasingly deepening depth of petroleum exploration and appearance of various advanced drilling technique , hole stability has attracted a lot of attention .

稳态瑞利波勘探的探测深度及影响因素分析

Investigation depth and influence factor analysis of steady state Rayleigh wave exploration

通过对记录进行零漂校正、F－K滤波、切除等预处理方法，提高了瞬态瑞雷波勘探的精度和深度。

By using zero shill rectifying , digital filter and cutting , the precision and depth of transient Rayleigh wave exploration can be considerably improved .