Impact of seismic source processes on ground motion variability of induced earthquakes in geothermal reservoirs, mines and laboratory experiments

震源过程对地热库、矿山和室内实验诱发地震地面运动变异的影响

基本信息

批准号：
359163592
负责人：
Dr. Grzegorz Kwiatek, Ph.D.
金额：
--
依托单位：
Sektion 4.2: Geomechanik und Wissenschaftliches Bohren
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2017
资助国家：
德国
起止时间：
2016-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/359163592?language=en
关键词：
Impact seismic source processes ground

项目摘要

The need to refine and further develop reservoir engineering techniques such as stimulation of geothermal reservoirs, exploitation of deep mines and utilizing other geo-reservoirs poses fundamental questions to be addressed such as mitigation of induced seismicity large enough to be felt on the surface. Of special concern in studies of induced seismicity are larger magnitude earthquakes, which might pose an extraordinary threat to engineering structures, raise public-acceptance issues or even cause a life-threat to underground workers in mines.Frequently, distances between induced earthquakes and vulnerable objects (engineering structures, local communities) are very small, often not exceeding a few kilometers. As a consequence, actual processes occurring in seismic source present an important contribution to recorded ground motions and to potential loses and damages. This project aims to investigate the contribution of physical processes occurring in the earthquake source to the observed ground motion variability with a special focus on the seismicity induced by man-made exploitation of georesources. The project also aims at understanding interactions between technological operations (e.g. ore exploitation, fluid injection), geomechanical/geological conditions and obtained high resolution information on processes in earthquake source in order to understand and mitigate the seismic hazard related to earthquakes and occurrence of large magnitude events.

需要完善和进一步开发储层工程技术，例如刺激地热储层，对深矿的开发以及利用其他地理储层提出的基本问题，例如缓解诱导的地震性，以至于足够大，可以在地面上感觉到足够大的诱因。在诱发地震活动的研究中特别关注的是更大的地震，这可能会对工程结构构成极大的威胁，提高公众感受性问题，甚至造成矿山中地下工人的威胁。据说，诱导的地震与易受伤害的物体（工程结构，地方社区，地方社区）之间的距离通常是很小的，通常不超过一些kilormers。结果，地震来源中发生的实际过程对记录的地面运动以及潜在的损失和损害做出了重要贡献。该项目旨在调查地震源中发生的物理过程对观察到的地面运动变异性的贡献，并特别关注通过人工剥削的地质源引起的地震性。该项目还旨在了解技术运营（例如矿石开发，注入矿石），地质/地质条件之间的相互作用，并获得了地震来源中有关过程的高分辨率信息，以了解和减轻与地震相关的地震危害和大量事件。