| The seismic refraction method is one of the earlist and main methods of exploration in Earth physics .It is a Earth physics method that can acquire the characteristic of the underground dissemination . according to the record of the time that refraction wave arrived the detector .when the people stirs up the seismic at the vicinity district . when theseismic is propagate underground .the local layer occurrence ,it can cause an seismic variety .according to the received changed seismic ,after date handle and explain .It can anti-perform the underground geology structure and rocks characters . attain the purpose that of geology explore.The shallow seismic refraction method is the main methods of exploration for engineering ,hydrogeological and environment geology. It used to explore the depth of the ground ,look for the fault zone ,measure the depth of the underground water ,the discretion growth and evaluation the qualitity and categorize the engineering geology problem etc . It usually called as the engineering seismic refract explore in actually application. The shallow seismic refraction method different from the depth seismic refraction in application the depth usually mainly toward the petroleum explore.At the same time ,the shallow seismic refraction method also can resolve some parameter problem in seismic explore.First ,this paper has discussed the proagational characteristics of every seismic wave in detail according to the basic theory of the seismic wa\ve propagation . according to the characteristics of the seismic wave .it has discussed the applied premise , the applied range and the field working method. Such as : find out the overlayer ,depth of the weathering ,slide ,the scope of the mudslide and have provided necessary refrerence material for dam ,factory,the line of the water hole ,and the choice of construction sites .and have achieved better results .(Because this text we mostly use the seismic refraction exploration replace the shallow seismic refraction )... |
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