摘要
在地应力长期观测中 ,对井下现场标定观测元件的布设以及计算应力的相对变化是一个困难的问题。针对这个问题 ,提出了在钻孔内布设四个应力测量元件 ,而非传统三个元件的测量方法。在井下其中一个元件大体标定的情况下 ,对其他元件进行了相对精密标定 。
Itis an importantand difficultproblem to calibrate the borehole stress sensors in situ and calculate the relative variation of stress during long term observation. Conventionally,three measuring components are installed in measurement of the ground stress.Now we suggesta new method thatthere are four stress measuring components to be laid in the borehole.When one ofthe four measuring components is roughly calibrated, the others can be calibrated precisely relative to the calibrated one.In this article we present the variation of stress and the equation of self-check of the reliability of the observed data.
出处
《地震》
CSCD
北大核心
2000年第2期101-106,共6页
Earthquake
关键词
地应力
地震前兆
地应力元件标定
应力场
Ground stress
Earthquake precursor
Calibration of stress sensor
