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。
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 Souhz 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-quefreney 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.
出处
《中国测试》
CAS
北大核心
2012年第4期6-9,共4页
China Measurement & Test
基金
国家自然科学基金项目(40772153)
