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本文给出3ZX—79型弦频式钻孔应变仪的性能及主要指标.其灵敏度,日稳定度、“内符合精度”均已达到10~(-9).从两年多来的连续实测资料表明,所测到的日应变固体潮大潮幅度在4—5×10~(-8);小潮幅度在2—3×10~(-8).地球表层年应变幅为10~(-6)数量级;震前地壳应变前兆信息在10~(-7)数量级上.从而表明:采用我国自己研制的高精度钻孔应变仪,为地球科学各项主要参数的测量研究、探索地震预报,提供了一种可能.
In this paper, the performance and main indexes of 3ZX-79 string frequency drilling strain gauge are given, and the sensitivity, the daily stability and the “internal coincidence accuracy” have all reached 10 ~ (-9) .From more than two years of continuous measurement The data show that the amplitude of daily tidal solid tides detected is 4-5 × 10 -8 and the amplitude of small tide is 2-3 × 10 -8 The annual strain amplitude of the Earth’s surface is 10 -6 ) Magnitude of pre-earthquake crustal strain precursory information is on the order of 10-7, which indicates that the high-precision borehole strain gage developed by our country is used to measure and study the major parameters of geosciences and explore the earthquake prediction A possible.