Two Different Layouts of Sensors of Four-gauge Borehole Strainmeter and Their Influence on Field Measurement

被引：5

作者：

Tang, Lei ^{[1
]}

Fan, Junyi ^{[1
]}

Miao, Miao ^{[2
]}

Chen, Zheng ^{[3
]}

机构：

[1] China Earthquake Adm, China Earthquake Networks Ctr, Beijing 100045, Peoples R China

[2] Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China

[3] Minist Emergency Management China, Natl Inst Nat Hazards, Beijing 100085, Peoples R China

来源：

SENSORS AND MATERIALS | 2022年 / 34卷 / 12期

基金：

中国国家自然科学基金;

关键词：

four-gauge borehole strainmeter; self-consistent; layout mode; numerical simulation; CALIBRATION;

D O I：

10.18494/SAM4186

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The four-gauge borehole strainmeters (FGBSs) used in mainland China include multiple instrument modes. The sensors in the four directions have two layout modes in the vertical direction: the same-plane mode and the different-plane mode. In this study, we obtained a large amount of site observation data and showed that the observation data collected using the two modes have certain differences. Through the establishment of a 3D finite element model and field measurement analysis, it was concluded that the inhomogeneity of the coupling cement at different levels influenced the observations of the sensors in the different-plane mode, and the observation data were less self-consistent than those for instruments with sensors in the same-plane mode. The self-consistent characteristics of the FGBS provide an algorithm for AI-based seismic research. Comprehensive analysis showed that for the four sensors of the FGBS, the same-plane layout was the optimal choice.

引用

页码：4425 / 4434

页数：10

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