高校地质学报2018，Vol.24Issue(3)：450-459,10.DOI:10.16108/j.issn1006-7493.2017143
利用P波S波相结合的逆时偏移方法监测微地震群
The Monitoring of Microseismic Clusters from the Joint of the Reversed P and S Wave Fields
摘要
Abstract
Locating the microseismic events is important in the safety assessment of mines and the reservoir impoundment and in the quality control of the hydraulic fracturing in the exploitation of gas and oil. However, due to the close arrivals of the microseismic clusters, it is a great challenge to accurately locate the microseismic clusters using the methods based on arrival times. Based on the reverse-time migration method, we proposed an approach using the joint of the reversed P wave field and S wave field to locate the microseismics. In this approach, we use the absolute records as the source functions in the reverse-time process and calculate the reversed wave fields (both P and S waves). Then, we pick out the origin times and the source locations of the microseismic clusters on the imaging condition of the focusing-to-scattering transformation of the wave front. We used synthetic data to test this approach, and the results indicate that this approach can successfully retrieve all the sources of the clusters.关键词
微地震/地震定位/逆时偏移,实时监测Key words
microseismics/seismic location/reverse-time method/real-time monitoring分类
天文与地球科学引用本文复制引用
于大勇,王攀..利用P波S波相结合的逆时偏移方法监测微地震群[J].高校地质学报,2018,24(3):450-459,10.基金项目
江苏省自然科学基金(BK20130570) （BK20130570）
国家自然科学基金(41404038)联合资助 （41404038）
