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地质力学学报:2011,17(1):15-26
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地震断层摩擦残余热异常测量方法探讨——以WFSD-1 钻孔温度测量为例
(1.国土资源部新构造运动与地质灾害重点实验室,北京 100081;2.中国地质科学院地质力学研究所,北京 100081)
METHOD EXPLORING OF THE RESIDUAL FRICTION THERMAL ANOMALY MEASUREMENT: A CASE STUDY ABOUT THE TEMPERATURE MEASUREMENT IN WFSD-1
(1.Key Lab of Neotectonic Movement and Geohazards,Ministry of Land and Resources,Beijing 100081,China;2.Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China)
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投稿时间:2010-12-29    
中文摘要: 以汶川地震断裂带科学钻探工程WFSD-1 钻孔高精度相对温度梯度测量确定汶川地震断层为例, 探讨了地震断裂带断层摩擦残余热温度测量方法。利用WFSD-1 钻孔相对温度梯度温度测量取得的科学数据进行分析,发现在400~500m、580~610 m 及620~750 m 三个测量段内存在温度正异常。结合地质资料综合分析,判定400~500 m、620~750 m 段温度异常可能由地层热导率差异引起,并非断层摩擦残余热异常,判定位于不透水断层泥中温度异常深度580~610 m 范围为断层主滑移带位置。
Abstract:In WFSD-1 borehole of the Wenchuan earthquake fault scientific drilling project,we conducted relative temperature gradient high-precision measurements and obtained large numbers of field data.In this paper,the friction residual heat temperature measuring method is discussed in detail and the position of Wenchuan earthquake fault zone is detected after field datum analyzing. We found three temperature anomalies in 400~500 m, 580~610 m and 620~750 m, respectively.Take geological data into comprehensive account, the two section's temperature anomalies may be caused by discrepancy of thermal conductivity in 400~500 m and 620~750 m and they aren't the residual frictional thermal anomalies.The section of the anomaly from nonpermeable fault clay in interval of 580~610 m may be resulted from friction heat generation during Wenchuan earthquake,and it located in the primary slip fault zone.
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基金项目:科技支撑计划项目"汶川地震断裂带科学钻探"— "井中科学探测"课题、"地震断裂带的应力环境、应变能的分布及其与地震关系"课题和地调项目(1212010916064) 联合资助。
引用文本:
李振,彭华,马秀敏,等,2011.地震断层摩擦残余热异常测量方法探讨——以WFSD-1 钻孔温度测量为例[J].地质力学学报,17(1):15-26.DOI:
LI Zhen,PENG Hua,MA Xiu-min,et al,2011.METHOD EXPLORING OF THE RESIDUAL FRICTION THERMAL ANOMALY MEASUREMENT: A CASE STUDY ABOUT THE TEMPERATURE MEASUREMENT IN WFSD-1[J].Journal of Geomechanics,17(1):15-26.DOI:

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