新型压磁应力解除测量系统及其测试分析

doi:10.13722/j.cnki.jrme.2015.0280

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摘要针对原有压磁应力解除测量系统深度浅、测量效率低等问题，研发新型压磁应力解除测量系统。首次研制了井下数据采集仪，并把井下数据采集仪与压磁测量元件集成在测量探头中，改变原有人工机械加力为电动控制加力，采用电子罗盘定向，进一步提升了定向精度。新型压磁应力解除测量系统主要由新型压磁测量探头、电动加力装置、电子罗盘定向装置组成，探头井下安装、测量元件预加力及定向采用计算机软件控制，井下数据采集仪自动完成对测量数据的采集和存储，测量深度及测量效率大幅提升。此外还对测量元件磁性性能、测量元件结构以及测量方法进行了改进，采用高频率浅激化、比较测量加上智能信号处理技术，使得压磁测量元件灵敏度、精度有了较大的提高。在北京温泉钻孔对新型压磁应力解除测量系统进行了试验测试，并与水压致裂法进行对比测量，测试效果良好，表明该系统完全满足深孔原地应力测量需要。

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	吴满路
	张重远

关键词 ：地质工程, 新型压磁应力解除测量系统, 试验测试, 对比测量

Abstract：Aiming at the shallow measuring depth and low work efficiency of traditional piezomagnetic overcoring system，a new-type one is developed. The borehole data acquisition unit is firstly developed. This unit and piezomagnetic stress measuring elements are integrated in the measuring. The original mechanical stressing manner is changed to an electric control way. The electronic compass is adopted to further improve the directional accuracy. The new-type piezomagnetic overcoring measurement system mainly consists of the new-type piezomagnetic measuring probe，electric stressing device，and electronic compass directional device. Installation of probe and pre-stressing and orientation of measuring element are controlled by computer software. The measuring data is collected and stored by borehole data acquisition unit automatically. Hence，the measuring depth and efficiency are greatly improved. In addition，magnetic property and structure of the piezomagnetic measuring element and measuring method are improved，as well. Adopting high frequency-light excitation，comparison measurement，and intelligent signal processing technology，both the sensitivity and accuracy of piezomagnetic measuring element have a greater improvement. An experimental test for new-type piezomagnetic overcoring system is conducted and compared with hydraulic fracturing measurement results in a borehole at Wenquan Town，Beijing. The test results are quite good and indicate that the new system can meet the need of deep-hole in situ stress measurement completely.

Key words： geological engineering new-type piezomagnetic overcoring measurement system experimental test comparison measurement

引用本文:

吴满路，张重远. 新型压磁应力解除测量系统及其测试分析[J]. 岩石力学与工程学报, 2016, 35(S1): 3119-3126.
WU Manlu，ZHANG Chongyuan. New-type piezomagnetic overcoring measurement system and its test analysis. , 2016, 35(S1): 3119-3126.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2015.0280 或 https://rockmech.whrsm.ac.cn/CN/Y2016/V35/IS1/3119

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