The Geophysical Prospecting and Surveying Team of the Shaanxi Bureau of Coal Geological Exploration has carried out prospecting works in the Shigetai,Huojitu,Daliuta coalmines and Yushen mining area earlier or later,and gave priority to seismic refraction method,not only obtained loose bed geological information of bedrock surfaces,phreatic water surfaces etc.
经钻孔验证,连续观测浅层折射法确定的潜水面深度、基岩面深度、风化层厚度等对综采有较大影响的主要界面绝对误差均小于10m,相对误差在3%左右。
Exemplified by combining the high density resistivity method with seismic refracted wave method to prospect in the same work area and traverses,this paper gives a synthetical contrast and interpretation to pide the stratum interface and determine the thickness of overburden.
该文以相同工区、相同测线上采用高密度电阻率法和地震折射波法相结合进行勘探为例,对划分地层界面,确定覆盖层厚度进行了综合对比与解释,结果表明:折射波法弥补了高密度电法分层的不足,而高密度电法弥补了折射波法对层面周围环境无法得知更详细地质情况的缺陷。
The geophysical methods of harmless detection of broken zone using refraction, drilling ultrasonic and radar are introduced in this paper.
比较分析了折射波法、钻井超声波法以及探地雷达法等三种围岩松动圈测试的地球物理方法 ,指出其适用的基本假设条件 ,并且应用前人的实例说明三种方法的优点及其局限性 ,最后指出围岩松动圈检测方法的发展方
The shallow seismic refraction method is one of the main exploration methods of engineering,hydrogeological and environmental geology.
浅层地震折射波法是在工程地质、水文地质及环境地质勘查中广泛应用的地震探测方法之一。
The seismic methods, reflection and refraction, are currently used in mining exploration.
地震法包括反射波法和折射波法，常用于金属矿勘探。
The Application Research of Shallow Seismic Refraction Survey in the Tunnel Engineering of the Tongnanxuan Freeway;
浅层折射波法在铜南宣高速隧道工程中的应用
THE APPLICATION OF SEISMIC REFRACTION WAVE METHOD AND HIGH-DENSITY RESISTIVITY METHOD TO TUNNEL INVESTIGATION
地震折射波法和高密度电法在隧道勘察中的应用
Refraction is often applied as a reconnaissance tool in newly explored areas.
折射波法在新的勘探地区，通常都作为一种普查手段。
Studies on Atmospheric Refractivity Profile Model and Radio Wave Refractive Error Correction Method;
大气折射率剖面模型与电波折射误差修正方法研究
Both the quick-algorithm of radio wave reflation are presented in the paper.
本文提出了电波折射误差快速算法及修正。
Refraction First-beak Statics Method under Complex Near-surface Conditions;
复杂地表条件下初至折射波静校正方法研究
Refraction First-Break Automatic Residual Static Corrections by Using Difference Method for the Seismic Wave Signals;
地震信号差分法初至折射波自动剩余静校正
The Application of the Generalized Reciprocal Method of Seismic Refraction in Civil Geological Investigation;
折射波广义互换法在城市地质调查中的应用
Application of an automated algorithm to remove anomalous propagation ground returns in nowcasting
超折射回波自动探测算法在临近预报中的应用
Method of radio wave refraction error correction based on 0 deg and its nearby elevation angles
0度及其附近仰角的电波折射误差修正方法
Microwave refractometer for accurate measurement of atmospheric refractivity
精确测量大气折射率的微波折射率仪
radio-wave refractive index of air
无线电波的空气折射率
step graded index lightguide
阶梯折射率剖面光波导
The Auto Picking of First Break Time and the Research of Near-surface Modeling Methods;
地震初至波自动拾取和折射波表层调查方法研究
Numerical Modeling of Combined Refraction-Diffraction and Reflection of Wave;
波浪联合折射、绕射与反射数值模拟
This paper presents a static correction method by using the first-arrival times in raw seismic data.
本文提出一个用折射波初至时间计算静校正量的新方法。
An Air Refractometer with Dual Vacuum Chambers Based on the Method of Equivalent Synthetic Wave
基于等效合成波方法的双真空管空气折射率测量仪