APPLICATION OF ACOUSTIC REFLECTION IMAGING LOGGING IN APPRAISAL OF KARST NEAR PILE POSITION
This paper analyzes the acoustic field characteristics of point sound source in the stratum near the logging, and studies the geological structure imaging near the logging by using the single-hole acoustic log reflection signal and the model translation signal of the karst. The reflecting stoneley wave signal can reflect the covered karst nearby the logging, including the characteristics of its contact surface (e.g. logging axis’s distance, intersect position of logging axis and so on). The actual data analysis indicates that the crevasse karst’s development condition significantly influences on the dynamics characteristic of sound field. The characteristic information of related karst cave and the crack change can be obtained by the attribute analysis of acoustic signal. The resolution and detection precision of karst near the logging can be improved. The detection of the distribution and development degree of the karst near the logging can be performed by using the attribute parameters. This can provide new ideas to improve the detection resolution of the karst near the logging.
Acoustic logging stoneley wave reflection wave imaging attribute analysis karst
Zhong-Qiu Xie Xian-Yan Zhou Cao Jun Zhen-Yu Li Yu-Chi Zhang
Department of Civil Engineering,Central South University of Forestry and Technology,Changsha 410082, Guilin Institute of Geology for Mineral Resources,Guilin 541004,P. R China
国际会议
长沙
英文
455-459
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）