1995年9月20日山东省苍山5·2级地震   总被引：2，自引：0，他引：2  

卢守安  刁守中 《高原地震》1996,(1)

本文着重概述了１９９５年９月２０日苍山５．２级地震序列具有应变能和频度呈正常衰减、衰减系数ｈ值高、ｂ值正常波动等特征；阐述了震后早期在现场判断其为主震—余震型序列的基本依据，探讨了孕震环境机制和地震的动力问题。  相似文献   

Potential assessment of CO₂ geological storage based on injection scenario simulation: A case study in eastern Junggar Basin          下载免费PDF全文

Ma Xin  Wen Dong-guang  Yang Guo-dong  Li Xu-feng  Diao Yu-jie  Dong Hai-hai  Cao Wei  Yin Shu-guo  Zhang Yan-mei 《地下水科学与工程》2021,9(4):279-291

Carbon Capture and Storage (CCS) is one of the effective means to deal with global warming, and saline aquifer storage is considered to be the most promising storage method. Junggar Basin, located in the northern part of Xinjiang and with a large distribution area of saline aquifer, is an effective carbon storage site. Based on well logging data and 2D seismic data, a 3D heterogeneous geological model of the Cretaceous Donggou Formation reservoir near D7 well was constructed, and dynamic simulations under two scenarios of single-well injection and multi-well injection were carried out to explore the storage potential and CO₂ storage mechanism of deep saline aquifer with real geological conditions in this study. The results show that within 100 km² of the saline aquifer of Donggou Formation in the vicinity of D7 well, the theoretical static CO₂ storage is 71.967 × 10⁶ tons (P50)^①, and the maximum dynamic CO₂ storage is 145.295 × 10⁶ tons (Case2). The heterogeneity of saline aquifer has a great influence on the spatial distribution of CO₂ in the reservoir. The multi-well injection scenario is conducive to the efficient utilization of reservoir space and safer for storage. Based on the results from theoretical static calculation and the dynamic simulation, the effective coefficient of CO₂ storage in deep saline aquifer in the eastern part of Xinjiang is recommended to be 4.9%. This study can be applied to the engineering practice of CO₂ sequestration in the deep saline aquifer in Xinjiang.  相似文献   

汶川县新桥沟泥石流危险性预测及防治对策     

任晓冬  何明阳  刁建钟 《中国煤炭地质》2012,(7):48-51

受“5．12”地震影响．汶川境内中高山峡谷地区众多流域内诱发了岩体崩塌及浅表土层滑坡．松散固体物源大量增加,为泥石流的形成创造了条件,从而使地震灾区泥石流沟暴发频率已较震前有显著提高。通过对新桥沟泥石流的流域、水源和物源特征的分析,认为该泥石流沟地形起伏大、水源充沛、物源发育等条件,暴发泥石流的的可能性较大。通过现场的物源分布情况,为在投资预算范围内取得最大的拦砂经济效益比,分别在流域内中下游、中游、中上游及上游设置4拦挡坝,以及修建排导槽工程,为有效预防泥石流提供了保障。  相似文献   

乌什-阿克苏地区新元古代蓝片岩地体构造变形特征     

王富军  陆远志  郑碧海  葛荣峰  刁志鹏  朱文斌 《地质学报》2021,95(5):1414-1425

乌什-阿克苏地区位于塔里木克拉通西北缘,发育有世界上为数不多的且保存较为完整的典型前寒武纪蓝片岩地体.根据前人的研究,阿克苏地区的蓝片岩地体在俯冲、折返和折返后的过程中共经历了四个期次的变形,但是对于乌什地区的蓝片岩地体的构造变形特征研究目前仍为空白.本文通过对乌什与阿克苏地区的蓝片岩地体的构造变形特征进行系统的野外观...  相似文献