The design of 3-component volume borehole strainmeter of type TJ-3
A new instrument of 3-component volume borehole strainmeter is developed in China and the primarily function is for borehole strain measurement. The sensor is designed on the base of type TJ-2 volume borehole strainmeter, and it has three independent components which make it being able to observe the strain changes in three different directions. In this paper, the principle, structure, measurement circuit and measuring system of the sensor are presented, and the field observation is also introduced. The filed results show that the measurement resolution of 3-component volume borehole strainmeter is up to 10-9 –10-10.
X.B. Ma H.L. Li J.J. Ma K.Z. Su
Institute of Crustal Dynamic, China Earthquake Administration, Beijing, China
国际会议
The Fifth International Symposium on In-situ Rock Stress(第五届国际岩石应力研讨会)
北京
英文
789-793
2010-08-25（万方平台首次上网日期，不代表论文的发表时间）