Studies In The United Application And Simultaneous Imaging Of Multi-Wave

Along with the development of seismic exploration and continual complication of the problem pure using of single wave do not satisfy the demand. For the sake of better settling the problem full using of all kind of waves is very essential. So people take forward the multi-waves seismic exploration in order to use different wave's information. Based on this aim this paper talks about how to use multi-waves'information from identifying latency layer and horizon contrasting,the backward of velocity and thickness of the covering layer,bonding seismic exploration of refraction wave and reflection wave on some geology condition,simultaneity imaging of reflection wave and refraction wave. This paper talks about the forward of reflection wave and refraction wave based on fermat's principle and the forward of inflection wave and based on the forward analyse the using of multi-waves and the simultaneity imaging of refraction wave and reflection wave from the following aspects: The first:The signal of refraction wave of interface layer only present in secondary arrival wave and this layer is called latency layer. The information of latency layer will not present in first arrival and first arrival refraction wave will make the horizon identifying wrong. In fact, because of the different geology condition there are always latency layer including thin layer and low velocity layer. So we should think about using the stratification ability of reflection wave when using refraction wave. For the sake of identifying and extracting the information of latency layer, we utilize the refraction wave and reflection wave in the coordinate of Ï„-p.This way can separate the information of latency layer aliased by noise waves and enhance the signal-noise ratio and can offer the intercept time and apparent velocity of the latency layer for dosing explanation of the data. The second:The velocity of the coverage layer is increasing with the depth of the layer and the coverage layer can be looked as a media model with the vertical variation velocity. So there will be the inflection wave in the coverage layer. And in the single wave exploration we think the velocity of coverage layer is inflexibility. So the reversal development thickness and the velocity of coverage layer have much error with the truth. This paper induct the inflection wave and contrast the single-wave way and the multi-waves way exploration further talking about the importance of the multi-waves exploration and how to using multi-waves information. The third:The reflection exploration and the refraction exploration have much similarity but there is also much difference. Using refraction exploration we can track the fundamental structure modality of the deep zone, so can settle the problem about the reliability of the valid information of the deep zone reflection becoming so worse in reflection wave exploration that it can not image to the deep zone foundation. So we utilize the refraction wave and the reflection wave. In some geology condition, because of the overlying formation of the objective layer is so plurality that the seismic waves are too complex and the noise is too severe and the significant wave is covered in the noise so it is hard to get useful information of reflection wave. So it is disadvantage to reflection wave exploration. But except for the part complex area the overlying formation of the objective layer is relatively good. We can use myriad metre spread the incident wave of far end shot point can slide to the far end area along the relative smooth out objective layer and this can break the part complex area so that we can observe the refraction wave and use refraction wave to describe the bedrock interface. In the seismic exploration in the mineral bosom area, much ore block is fault trough structure shape and there is ore bed in the fault trough. For the sake of most coefficient use of exploration fund, it demand to input the seismic work capacity to the fault trough where there may be ore bed as best as may. Because the velocity of the ore bed in the fault trough is different with the velocity of the both sides layers, so for the sake of designing demand we should full use the action of calibrating lithologic character of the refraction wave. It is to say we can use the information of the refraction wave to judge whether the spread covers the boundary fault of the fault trough so we can modify the spread of the reflection exploration so as to increase the efficiency of the exploration. The forth:The reflection wave exploration has already developed a series integrate data imaging technology and it has taken important pole, but along with the development of seismic exploration and the use in the engineer exploration, the refraction wave has become aspect which can not be ignorant. As we know, the propagation path of the reflection wave and the refraction wave are different, they represent the information of different point, so their imaging technology are different. So if we use imaging technology of reflection wave in refraction wave, it will be wrong. In days gong by, the data processing aims to depth layer, the affect of refraction wave is not so strong, but the affect of refraction wave can not be ignorant to the data of shallow layer. So develop the simultaneity imaging technology of the reflection wave and the refraction...