METHOD EXPLORING OF THE RESIDUAL FRICTION THERMAL ANOMALY MEASUREMENT: A CASE STUDY ABOUT THE TEMPERATURE MEASUREMENT IN WFSD-1

LI Zhen; PENG Hua; MA Xiu-min; JIANG Jing-jie

2011 Vol. 17, No. 1

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LI Zhen, PENG Hua, MA Xiu-min, JIANG Jing-jie. METHOD EXPLORING OF THE RESIDUAL FRICTION THERMAL ANOMALY MEASUREMENT: A CASE STUDY ABOUT THE TEMPERATURE MEASUREMENT IN WFSD-1[J]. Journal of Geomechanics, 2011, 17(1): 15-26.

Citation:

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

Received Date: 29 December 2010

Publish Date: 25 March 2011

Abstract

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.
- Wenchuan earthquake /
- the Longmenshan fault zone /
- the residual frictional thermal anomaly /
- temperature gradient /
- temperature anomaly

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References

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