Dynamic response study of buried pipe subjected to dynamic compaction

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Du, Jifang^1 ; Wu, Shuaifeng^2 ; Zhang, Yinqiu^3 ; Hou, Sen^4

Department of Transportation Science and Engineering, Beihang University, Beijing, China^1

State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, China^2

Zhejiang Provincial Institute of Communications Planning Design and Research, Hangzhou, China^3

Engineering Research Base of China Airport Construction Corporation of CAAC, Beijing, China^4

关键词: Blasting engineering;    Dynamic compaction;    Fourier spectra;    Internal vibration;    Linear relationships;    Measurement methods;    Monitoring methods;    Vibration characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022055/pdf
DOI  :  10.1088/1755-1315/300/2/022055

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Monitoring the internal vibration of the soil under dynamic compaction is often influenced by the environment. If the sensor is located in the crushed rock soil, its monitoring data often do not have typical representativeness. Therefore, a monitoring method of sensors placed in pipe is proposed. Based on the experience of earthquake and blasting engineering, the feasibility of the measurement method is studied and the results showed that the sensors placed in PVC pipes can reflect the response of soil. Two field tests, low energy and high energy, were conducted to verify the conclusion. After comparison of various vibration characteristics including waveform, Fourier spectrum, and amplitude attenuations with distance, the velocity of the sensors in PVC pipe showed linear relationship with sensors in soil. It can be concluded that the sensors placed in PVC pipe can be used for the test of vibration in soil and represent the typical vibration of the whole stratum.