作者：张万鹏1, 永野宏治2, 罗绍河1
作者单位：1. 河南理工大学资源环境学院, 河南 焦作 454000;
2. 室兰工业大学, 日本 北海道室兰市 050-8585
关键词：近接型相似微地震对; 相对震源坐标; 倒频谱; 时间-倒频率解析
摘要：
为查明水力压裂实验所产生的人工裂隙网络区域的地应力场和局部构造特征,分析了1995~1996年在Soultz干热岩(HDR)地热田水力压裂实验中获得的声发射数据,通过倒频谱解析法,检出近接型相似微地震对,对其进行时间-倒频率分析,结合时间-倒频率-倒频谱表示图,判断出了P波的到达时间间隔,最后标定出近接型相似微地震对的相对震源坐标,判断出人工裂隙网局部的裂隙进展方向。
Study on proximity similar micro-seismic doublets by cepstrum analyses
ZHANG Wan-peng1, Koji Nagano2, LUO Shao-he1
1. Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China;
2. Muroran Institute of Technology, Muroran 050-8585, Japan
Abstract: In order to understand the stress field and partial structure of the fracture network induced by hydraulic injection test, the authors analyzed the data acquired from hydraulic injection experiment in Soultz HDR(hot-dry-rock) field from 1995 to 1996. Proximity similar micro-seismic doublets were detected through cepstrum analyses. Afterwards, the time interval between P-waves can be obtained by time-quefrency analysis and 3D(time-quefrency-cepstrum) plot. Conclusively, the relative coordinates were calculated from the first event. According to the relative location of the proximity similar micro-seismic doublets, the direction of forward motion about the partial fracture can be got.
Keywords: proximity similar micro-seismic doublets; related coordinates; cepstrum; time-quefrency analysis
2012, 38(4): 6-9 收稿日期: 2011-12-13;收到修改稿日期: 2012-3-1
基金项目: 国家自然科学基金项目(40772153)
作者简介: 张万鹏(1986-),男,河南平顶山市人,硕士研究生,专业方向为基岩裂隙。
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