松散层沉降光纤光栅监测的应变传递及其工程应用

doi:10.13722/j.cnki.jrme.2014.0616

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (376 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为了研究深部厚松散层失水沉降变形特征，建立光纤光栅–胶结层–封装材料及传感器封装材料–钻孔封孔材料–松散层的应变传递计算模型。通过对光纤光栅应变与松散层应变的传递分析，指出前人应变传递理论中所推导的公式不适用于松散层监测的应变计算，由此给出钻孔植入光纤光栅传感器的松散层应变传递计算模型，并分析影响松散层应变传递的因素，指出封孔材料弹性模量在8～15 GPa范围内时可以得到较高应变传递率。针对某矿松散层12个层位安装的24个光纤光栅传感器，采用该模型得出92.40～148.69 m范围内松散层变形沉降的应变监测结果。工程实践表明，该煤矿松散层埋深97.56～104.33，141.94～144.88 m处为最易出现压应力集中的区域，这与煤矿的实际情况、采用相关方法监测的结果基本一致。光纤光栅应变传递理论研究对推动光纤传感技术发展及其工程应用具有重要实践意义。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：采矿工程, 松散层沉降, 光纤光栅, 钻孔植入法, 应变传递, 工程应用

Abstract：In order to study the deformation features of deep thick unconsolidated layer caused by de-watering，the calculation model of fiber Bragg grating(FBG) sensor–Adhesive–Packaging material-borehole sealing material- unconsolidated layer strain transfer system was established. Based on the strain transferring analysis of FBG sensors and the unconsolidated layer，it was found that the formulae deduced in previous researches were not suitable for the strain calculation of the unconsolidated layer monitoring. A new mathematical model of strain transferring of the unconsolidated layer and FBG sensors was proposed，and the factors affecting the strain transferring of the unconsolidated layer were analyzed. The higher strain transfer ratio can be obtained when sealing material elastic modulus was in the range of 8–15 GPa. In a coal mine，24 FBG sensors were installed in the 12 unconsolidated layers，the settlement and deformation monitoring results of the unconsolidated layer with the depth of 92.40–148.69 m were calculated using the new mathematical model proposed in this paper. Field practice indicated that high stress concentration region of the mine was located at the unconsolidated layer with depth of 97.56–104.33 m and 141.94–144.88 m，which was in well accordance with the actual case and the results obtained from other monitoring methods. Study of Fiber Bragg Grating strain transferring theory has important practical significance to promote the development of optical fiber sensing technology and its application.

Key words： mining engineering unconsolidated layer settlement fiber Bragg grating borehole-embedded method strain transfer function engineering application

引用本文:

张丁丁1，柴敬1，2，李毅1，2，孙亚运1，刘显威1，张桂花1，袁强1. 松散层沉降光纤光栅监测的应变传递及其工程应用[J]. 岩石力学与工程学报, 2015, 34(s1): 3289-3297.
ZHANG Dingding1，CHAI Jing1，2，LI Yi1，2，SUN Yayun1，LIU Xianwei1，ZHANG Guihua1，YUAN Qiang1. STRAIN TRANSFER FUNCTION OF EMBEDDED FIBER BRAGG GRATING SENSORS FOR UNCONSOLIDATED LAYER SETTLEMENT DEFORMATION DETECTOR AND ITS APPLICATION. , 2015, 34(s1): 3289-3297.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2014.0616 或 http://www.rockmech.org/CN/Y2015/V34/Is1/3289

[1]	殷跃平，张作辰，张开军. 我国地面沉降现状及防治对策研究[J]. 中国地质灾害与防治学报，2005，16(2)：1-8.(YIN Yueping，ZHANG Zuochen，ZHANG Kaijun. Land subsidence and countermeasures for its prevention in China[J]. The Chinese Journal of Geological Hazard and Control，2005，16(2)：1-8.(in Chinese)) " target="_blank">
[7]	SANADA H，SUGITA Y，KASHIWAI Y. Development of a multi-interval displacement sensor using fiber Bragg grating technology[J]. International Journal of Rock Mechanics and Mining Sciences，2012，54：27-36. " target="_blank">
[9]	刘雄. 光纤传感技术在岩土力学与工程中的应用研究[J]. 岩石力学与工程学报，1999，18(5)：588-591.(LIU Xiong. On the application of fiber optical sensor to geomechanics and geotechnical engineering[J]. Chinese Journal of Rock Mechanics and Engineering，1999，18(5)：588-591.(in Chinese))
[11]	柴敬，邱标，魏世明，等. 岩层变形检测的植入式光纤Bragg光栅应变传递分析与应用[J]. 岩石力学与工程学报，2008，27(12)：2 551-2 556.(CHAI Jing，QIU Biao，WEI Shiming，et al. Strain transfer of embedded fiber Bragg grating sensors for rock deformation and its application[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(12)：2 551-2 556.(in Chinese)) " target="_blank">
[13]	CHAI J，LIU J，QIU B，et al. Detecting deformations in uncompacted strata by fiber Bragg grating sensors incorporated into GFRP[J]. Tunnelling and Underground Space Technology，2011，26(1)：92-99.
[14]	ANSARI F，YUAN L. Mechanics of bond and interface shear transfer in optical fiber sensors[J]. Journal of Engineering Mechanics，1998，124(4)：385-394. " target="_blank">
[17]	周智，李冀龙，欧进萍. 埋入式光纤光栅界面应变传递机理与误差修正[J]. 哈尔滨工业大学学报，2006，38(1)：49-55.(ZHOU Zhi，LI Jilong，OU Jinping. Interface strain transfer mechanism anderror modification of embedded FBG strain sensors[J]. Journal of Harbin Institute of Technology，2006，38(1)：49-55.(in Chinese)) " target="_blank">
[19]	魏世明，柴敬. 岩石变形光栅检测的表面黏贴法及应变传递分析[J]. 岩土工程学报，2011，33(4)：587-592.(WEI Shiming，CHAI Jing. Surface pasting methods and analyses of strain transfer in rock deformation tests using FBG[J]. Chinese Journal of Geotechnical Engineering，2011，33(4)：587-592.(in Chinese))
[21]	刘环宇，陈卫忠，王争鸣. 兖州矿区立井井筒破坏机制的理论分析[J]. 岩石力学与工程学报，2007，26(增1)：2 620-2 626.(LIU Huanyu，CHEN Weizhong，WANG Zhengming. Theoretical analysis of shaftwall fracturing in Yanzhou mining area[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：2 620-2 626.(in Chinese)) " target="_blank">
[2]	薛禹群，张云，叶淑君，等. 我国地面沉降若干问题研究[J]. 高校地质学报，2006，12(2)：153-160.(XUE Yuqun，ZHANG yun，YE Shujun，et al. Research on the problems of land subsidence in China[J]. Geological Journal of China Universities，2006，12(2)：153-160.(in Chinese)) " target="_blank">
[5]	何庆成，叶晓滨，李志明，等. 我国地面沉降现状及防治战略设想[J]. 高校地质学报，2006，12(2)：161-168.(HE Qingcheng，YE Xiaobin，LI Zhiming，et al. The status and prevention strategy of land subsidence in China[J]. Geological Journal of China Universities，2006，12(2)：161-168.(in Chinese)) " target="_blank">
[15]	LAU K，YUAN L，ZHOU L M，et al. Strain monitoring in FRP laminates and concreste beams using FBG sensors[J]. Composite Structures，2001，51(1)：9-20.
[22]	王刚. 鲍店煤矿钻孔植入光栅监测地层沉降系统波长分析[硕士学位论文][D]. 西安：西安科技大学，2012.(WANG Gang. Wavelength analysis of embedded FBG system in Baodian coal unconsolidated strata through deep borehole[M. S. Thesis][D]. Xi?an：Xi?an University of Science and Technology，2012.(in Chinese)) " target="_blank">
[4]	QIU B，LUO Y. Subsurface subsidence prediction model and its potential applications for longwall mining operations[J]. Journal of Xi?an University of Science and Technology，2011，31(6)：823-829. " target="_blank">
[8]	WANG Y，TJIN S C，HAO Z J，et al. Determination of load-strain characteristics of concrete slabs by using embedded fiber Bragg grating sensors[C]// Proceedings of SPIE. Bellingham，USA：SPIE，2000：297-304. " target="_blank">
[3]	GALLOWAY D L，JONES D R，INGEBRITSEN S E. Land subsidence in the United States[M]. Reston：Virginia U.S. Geological Survey Circular，1999：7-21. " target="_blank">
[6]	SCHMIDT-HATTENBERGER C，NAUMANN M，BORM G. Fiber Bragg grating strain measurements in comparison with additional techniques for rock mechanical testing[J]. IEEE Sensors Journal，2003，3(1)：50-55. " target="_blank">
[10]	李焕强，孙红月，刘永莉，等. 光纤传感技术在边坡模型试验中的应用[J]. 岩石力学与工程学报，2008，27(8)：1 703-1 708.(LI Huanqiang，SUN Hongyue，LIU Yongli，et al. Application of optical fiber sensing technology to slope model test[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(8)：1 703-1 708.(in Chinese)) " target="_blank">
[12]	柴敬，朱磊，魏世明，等. 松散地层深部沉降变形的光纤Bragg光栅监测研究[J]. 煤炭学报，2009，34(6)：741-746.(CHAI Jing，ZHU Lei，WEI Shiming，et al. Settlement deformation detecting in deep unconsolidated soil layer by fiber Bragg grating sensing technology[J]. Journal of China Coal Society，2009，34(6)：741-746.(in Chinese))
[18]	李东升，李宏男. 埋入式封装的光纤光栅传感器应变传递分析[J]. 力学学报，2005，37(4)：435-440.(LI Dongsheng，LI Hongnan. Strain transferring analysis of embedded fiber bragg grating sensors[J]. Chinese Journal of Theoretical and Applied Mechanics，2005，37(4)：436-441.(in Chinese))
[20]	柴敬，朱磊，张丁丁，等. 多孔低压注水过程松散层沉降研究[J]. 煤炭学报，2013，38(10)：1 720-1 727.(CHAI Jing，ZHU Lei，ZHANG Dingding，et al. Study on settlement deformation of unconsolidated strata during low-pressure water injection process of multi-borehole[J]. Journal of China Coal Society，2013，38(10)：1 720-1 727.(in Chinese)) " target="_blank">
[16]	周智. 土木工程结构光纤光栅智能传感元件及其监测系统[博士学位论文][D]. 哈尔滨：哈尔滨工业大学，2003.(ZHOU Zhi. Optical fibei smart Bragg grating sensors and intelligent monitoring system of civil infrastructures[Ph. D. Thesis][D]. Harbin：Harbin Institue of Technology，2003.(in Chinese)) " target="_blank">