In most regions of our country,because of the lack of the strong earthquake s prognosticates record,it is hard to get the ground motion attenuation laws of a research area,and so the valid figure materials can t be got for the engineering anti-earthquake basis.

Study on near surface absorption and seismic wave attenuation rules in Qijiabei region;

Besides the control of blasting method, blasting scale and limiting the maximum charge initiated per delay, the monitoring of the peak particle velocity of blasting induced vibration was conducted on fresh concrete interface between concrete and rock foundation; furthermore, the attenuation law of vibration on fresh concrete and foundation rock under different blasting conditions was found.

On the basis of theoretical analysis and on-the-spot investigation,the attenuation rule of oscillation speed in Wushan Copper Mine is obtained upon repeated researches on the collected data,providing useful evidences for the clarification of explosive amount.

The ANN for attenuation rule of 3D seismic parameters is studied in the paper.

In order to establish a low strain method of quantitative analysis of pile defects considering pile-soil interaction,the attenuation rule of velocity wave along pile shaft was studied under different pile-soil interaction damping coefficients.

Based on the research of hydrogeological condition,the distribution and attenuation of COD of Sanlidian channel in unconfined aquifer are studied by numerical simulation.

Based on the science of combustion,the explosion dynamics and the applied mathematics,the study of gas explosion spreading and attenuation can be made from the reaction angle between the explosion and the environment.

The wave intensity change equations are applied with the purpose of studying the detonation attenuation.