地震研究

以陕西乾陵台为例,采用红外热像仪对引硐、NS和EW向硐室衬砌的温度进行测量和热成像。结果表明:引硐为高温段,随着不断深入,温度以近线性的趋势从20.7℃下降至14.8℃; NS向硐室温度比EW向略高,平均分别为13.5℃和13.1℃,但二者整体变化皆稳定均匀。各区段内温度存在小幅的波动现象,某些局部区域个别测点的温度较离散; 而同一测点处衬砌和空气的温度并不一致,存在较大差异。硐室E端处的热像图显示顶拱的温度普遍高于侧壁。

Taking the Shaanxi Qianling Observatory as an example,we systematically detect and image the temperature in lining for the front,NS,and EW parts of the tunnel using the powerful infrared thermal camera. The results show that lining temperature in the front is much higher,varying from 20.7 ℃ to 14.8 ℃,and exhibits a linearly decrease with an increase in distance from the entrance. The lining temperature in the NS part is slightly higher than the EW part,the mean temperatures are approximately 13.5 ℃ and 13.1 ℃ respectively,but each of which is basically uniform and stable. Generally,slight temperature fluctuations widely exist in three main parts of tunnel,the dispersions are larger at a few individual points among them. Furthermore,temperatures in lining and air are significantly discrepant at the same point,this means the difference is drastic. Additionally,infrared thermograms of the eastern end of tunnel show that the temperature in ceiling is clearly larger than that in the sidewalls.

引言
1 区域构造背景和台站概况
2 硐室温变及其典型干扰
3 红外热成像方法
4 硐室红外热成像特征
5 结论与讨论

图1 乾陵台概况<br/>Fig.1 General information of the Qianling Geodynamic Observatory

图1 乾陵台概况
Fig.1 General information of the Qianling Geodynamic Observatory

图2 观测硐室内景<br/>Fig.2 Photographs showing the observation tunnels

图2 观测硐室内景
Fig.2 Photographs showing the observation tunnels

图3 硐室内气温变化的分钟值曲线<br/>Fig.3 Raw minute value curve of air temperature inside the tunnel

图3 硐室内气温变化的分钟值曲线
Fig.3 Raw minute value curve of air temperature inside the tunnel

图4 硐室气温瞬时变化所产生的干扰<br/>Fig.4 Disturbances induced by transient changes in air temperature inside the tunnel

图4 硐室气温瞬时变化所产生的干扰
Fig.4 Disturbances induced by transient changes in air temperature inside the tunnel

图5 引硐、NS和EW向硐室衬砌的温度分布<br/>Fig.5 Temperature distributions of concrete lining along the front,NS,and EW components of the tunnel

图5 引硐、NS和EW向硐室衬砌的温度分布
Fig.5 Temperature distributions of concrete lining along the front,NS,and EW components of the tunnel

图6 硐室E端场景(a)及红外热成像图(b)<br/>Fig.6 Scene of eastern end of tunnel(a)and infrared thermographic imaging(b)

图6 硐室E端场景(a)及红外热成像图(b)
Fig.6 Scene of eastern end of tunnel(a)and infrared thermographic imaging(b)

狄樑,陆德明,丁建国,等.2017.气象因素对倾斜仪观测干扰特征分析[J].大地测量与地球动力学,37(8):870-875.
古澤保,大谷文夫,寺石眞弘,等.1993.線膨張率の異なる2種のスーパー·インヴァー棒伸縮計の比較観測[J].測地学会誌,39(4):363-376.
何春雄,吴紫汪,朱林楠.1999.严寒地区隧道围岩冻结状况分析的导热与对流换热模型[J].中国科学:地球科学,29(增刊1):1-7.
俱战省,刘文兆,郑粉莉,等.2012.陕西省乾县地下水位动态变化特征分析[J].水土保持通报,32(2):178-181.
李家明,姚植桂,张卫华,等.2009.超短基线伸缩仪的研制[J].大地测量与地球动力学,29(4):144-147.
李新男.2017.鄂尔多斯西南缘活动构造几何图像、运动特征及构造变形模式[D].北京:中国地震局地质研究所,12-19.
李云红,孙晓刚,原桂彬.2007.红外热像仪精确测温技术[J].光学精密工程,15(9):1336-1341.
刘冠中,马瑾,杨永林,等.2014.川西地区长周期气温变化对跨断层位移观测的影响及芦山地震前的异常断层活动[J].地球物理学报,57(7):2150-2164.
寺石眞弘,大谷文夫,竹内文朗,等.2009.地殻変動連続観測における季節変化[R].京都:京都大学防災研究所年報,52(B):285-291.
苏美亮,方云,周伟强,等.2013.千手观音凝结水的红外热成像检测技术[J].物探与化探,37(2):295-300.
孙玉军,李杰,曹建玲,等.2008.深部洞室中微小温度年度变化足以造成地应变年度变化[J].地震学报,30(5):464-473.
谭伟杰,许雪晴,董大南,等.2017.温度变化对中国大陆三维周年位移的影响[J].测绘学报,46(9):1080-1087.
田宝柱,刘善军,张艳博,等.2016.花岗岩巷道岩爆过程红外辐射时空演化特征室内模拟试验研究[J].岩土力学,37(3):711-718.
王明年,唐兴华,吴秋军,等.2016.高岩温隧道围岩—支护结构温度场演化规律[J].铁道学报,38(11):126-131.
夏浩,胡新丽,唐辉明,等.2017.红外热像技术在滑坡物理模型试验中的应用[J].岩土力学,38(1):291-299.
Amoruso A,Crescentini L,Chiaraluce L.2017a.Surface temperature and precipitation affecting GPS signals before the 2009 L'Aquila earthquake(Central Italy)[J].Geophys J Int,210(2):911-918.
Amoruso A,Crescentini L,Bayo A,et al.2017b.Two high-sensitivity laser strainmeters installed in the Canfranc Underground Laboratory(Spain):instrument features from 100 to 0.001mHz[J].Pure Appl Geophys,175(5):1727-1737.
Beavan J,Bilham R.1977.Thermally induced errors in fluid tube tiltmeters[J].J Geophys Res,82(36):5699-5704.
Ben-Zion Y,Allam A A.2013.Seasonal thermoelastic strain and postseismic effects in Parkfield borehole dilatometers[J].Earth Planet Sci Lett,379:120-126.
Bonaccorso A,Calvari S.2017.A new approach to investigate an eruptive paroxysmal sequence using camera and strainmeter networks:lessons from the 3-5 December 2015 activity at Etna volcano[J].Earth Planet Sci Lett,475:231-241.
Borghi A,Aoudia A,Javed F,et al.2016.Precursory slow-slip loaded the 2009 L'Aquila earthquake sequence[J].Geophys J Int,205(2):776-784.
Harrison J C,Herbst K.1977.Thermoelastic strains and tilt revisited[J].Geophys Res Lett,4(11):535-537.
Lee J C,Angelier J,Chu H T,et al.2001.Continuous monitoring of an active fault in a plate suture zone:a creepmeter study of the Chihshang fault,eastern Taiwan[J].Tectonophysics,333(1):219-240.
Liu X X,Liang Z Z,Zhang Y B,et al.2018.Experimental study on the monitoring of rockburst in tunnels under dry and saturated conditions using AE and infrared monitoring[J].Tunn Undergr Space Technol,82:517-528.
Venedikov A P,Arnoso J,Cai W,et al.2006.Separation of the long-term thermal effects from the strain measurements in the Geodynamics Laboratory of Lanzarote[J].J Geodyn,41(1):213-220.
Yamazaki K.2013.An attempt to correct strain data measured with vault-housed extensometers under variations in temperature[J].Tectonophysics,599:89-96.
DB/T8.1—2003,地震台站建设规范地形变台站[S].

备注

引言

1 区域构造背景和台站概况

2 硐室温变及其典型干扰

3 红外热成像方法

4 硐室红外热成像特征

5 结论与讨论

期刊信息