Experimental study on nondestructive testing of anchor cable in pumped storage power station

Authors

YAN Liangping, Xinjiang Fukang Pumped Storge Power Company Limited, Urumqi 830000 ChinaFollow
ZHOU Liming, Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Changjiang River Scientific Research Institute, Wuhan 430010, ChinaFollow
CUI Botao, Xinjiang Fukang Pumped Storge Power Company Limited, Urumqi 830000 China
WANG Bolin, Xinjiang Fukang Pumped Storge Power Company Limited, Urumqi 830000 China
LU Jiangang, Xinjiang Fukang Pumped Storge Power Company Limited, Urumqi 830000 China

Abstract

In order to demonstrate the effect of elastic wave reflection method, the nondestructive testing test of anchor cables was carried out at the bank slope of Fukang Pumped Storage Power Station in Xinjiang. On the basis of the basic theory of elastic wave reflection method, the anchor cable sensor is embedded, and the data acquisition, signal excitation position and wave velocity of anchor body in the process of nondestructive testing of anchor cable are systematically studied. The following results are obtained: When the receiving sensor position is fixed and the excitation part is the steel strand where the receiving sensor is installed, the receiving signal amplitude is the largest. When the excitation part is anchor cable tray, the amplitude of the received signal is weakened, but the interference signal is large. The wave velocity of anchor cable decreases with the increase of anchor cable grouting, grouting age and tensile load. According to the experimental test results of anchor cable, the length of anchor cable can be detected and quantitatively analyzed based on elastic wave reflection method. However, at present, elastic wave reflection method can only make qualitative evaluation on grouting tightness of anchor cable anchorage body, which does not reach the accuracy of quantitative evaluation. The experimental results have certain reference and guidance for the peers who study the nondestructive testing technology of anchor cables.

Keywords

anchor cable, elastic wave reflection method, anchoring quality, wave velocity of anchorage body, nondestructive testing

DOI

10.12363/issn.1001-1986.21.10.0585

Recommended Citation

YAN Liangping, ZHOU Liming, CUI Botao, et al. (2022) "Experimental study on nondestructive testing of anchor cable in pumped storage power station," Coal Geology & Exploration: Vol. 50: Iss. 8, Article 18.
DOI: 10.12363/issn.1001-1986.21.10.0585
Available at: https://cge.researchcommons.org/journal/vol50/iss8/18

Reference

[1] 王军民,陈义群,陈华. 高速公路锚杆锚固质量无损检测技术研究[J]. 地球物理学进展,2004,19(4):782−785. WANG Junmin,CHEN Yiqun,CHEN Hua. Research on anchor bar quality nondestructive testing technique on highway[J]. Progress in Geophysics,2004,19(4):782−785.

[2] 饶枭宇. 预应力岩锚内锚固段锚固性能及荷载传递机理研究[D]. 重庆：重庆大学，2007.

RAO Xiaoyu. Study on anchorage performance and load transfer mechanism of embedment section of prestressed rock cable bolt[D]. Chongqing：Chongqing University，2007.

[3] 陈晓东,钟久安,臧鹏,等. 两河口水电站压力分散型锚索差异张拉计算与分析[J]. 探矿工程(岩土钻掘工程),2020,47(5):85−88. CHEN Xiaodong,ZHONG Jiuan,ZANG Peng,et al. Calculation and analysis of differential tension of pressure dispersion anchor cables at Lianghekou hydropower station[J]. Exploration Engineering (Rock & Soil Drilling and Tunneling),2020,47(5):85−88.

[4] 苗国航,咸大庆,陈仁俊. 岩土锚固:系牢工程之“根”:访著名岩土锚固工程专家程良奎教授[J]. 岩土工程界,2003,6(11):14−17. MIAO Guohang,XIAN Daqing,CHEN Renjun. Geotechnical anchoring:The “roots” of the prison project: Visiting professor Cheng Liangkui,a well−known expert[J]. Geotechnical Engineering World,2003,6(11):14−17.

[5] 张现平. 岩质高边坡预应力快速锚固技术研究[D]. 西安：西安理工大学，2002.

ZHANG Xianping. Fast pre-stressed anchoring technique for high rocky slope[D]. Xi’an：Xi’an University of Technology，2002.

[6] 刘明华. 锚索加固高边坡预应力损失原因及影响分析[J]. 湖南交通科技,2019,45(3):16−19. LIU Minghua. Cause and influence analysis of prestress loss of high slope reinforced by anchor cable[J]. Hunan Communication Science and Technology,2019,45(3):16−19.

[7] 余瑜,刘新荣,刘永权. 基坑锚索预应力损失规律现场试验研究[J]. 岩土力学,2019,40(5):1932−1939. YU Yu,LIU Xinrong,LIU Yongquan. Field experimental investigation on prestress loss law of anchor cable in foundation pits[J]. Rock and Soil Mechanics,2019,40(5):1932−1939.

[8] 刘盛东,张平松. 工程锚杆锚固质量动测技术[J]. 地球物理学进展,2004,19(3):568−572. LIU Shengdong,ZHANG Pingsong. The dynamic technology of anchoring quality for engineering anchor rod[J]. Progress in Geophysics,2004,19(3):568−572.

[9] 汪明武,王鹤龄. 锚固质量的无损检测技术[J]. 岩石力学与工程学报,2002,21(1):126−129. WANG Mingwu,WANG Heling. Nondestructive testing of anchoring quality[J]. Chinese Journal of Rock Mechanics and Engineering,2002,21(1):126−129.

[10] 李青锋,李兴华,巫静波. 应力波法无损检测煤矿锚索锚固质量的研究[J]. 矿冶工程,2007,27(6):1−3. LI Qingfeng,LI Xinghua,WU Jingbo. Research of nondestructive test with stress wave on anchor cable quality in coal mine[J]. Mining and Metallurgical Engineering,2007,27(6):1−3.

[11] 廖希彦. 锚索长度无损检测技术在工程中的应用[J]. 福建农机,2008(3):61−63. LIAO Xiyan. Application of nondestructive testing technology of anchor cable length in engineering[J]. Fujian Agricultural Machinery,2008(3):61−63.

[12] 赵德宽. 基于弹性波反射原理的锚杆(索)无损检测试验研究[J]. 铁道建筑,2017,57(10):105−108. ZHAO Dekuan. Experimental study on nondestructive testing of anchor rod/cable based on elastic wave reflection principle[J]. Railway Engineering,2017,57(10):105−108.

[13] 付威亚. 基于弹性波理论的预应力锚索无损检测方法研究[D]. 重庆：重庆交通大学，2017.

FU Weiya. Study on the nondestructive testing methods of pre-stressed anchor cable based on elastic wave theory[D]. Chongqing：Chongqing Jiaotong University，2017.

[14] 马芳平. 预应力锚索施工质量无损检测试验研究[J]. 人民长江,2011,42(14):46−49. MA Fangping. Study on non-destructive test for construction quality of pre-stressed anchorage cable[J]. Yangtze River,2011,42(14):46−49.

[15] 陈明晓. 锚索无损检测技术在高速公路中的应用[J]. 广东公路交通,2010(1):53−57. CHEN Mingxiao. Application of anchor NDT on expressway construction[J]. Guangdong Highway Communications,2010(1):53−57.

[16] 罗斌,唐树名,唐忠林,等. 边坡锚索无损检测技术及应用[J]. 公路交通技术,2009(6):45−47. LUO Bin,TANG Shuming,TANG Zhonglin,et al. Non–destructive examination detection technique for anchor rope and its application[J]. Technology of Highway and Transport,2009(6):45−47.

[17] 杨湖,王成. 弹性波在锚杆锚固体系中传播规律的研究[J]. 测试技术学报,2003,17(2):145−149. YANG Hu,WANG Cheng. Study on propagation law of Elastic wave in bolt anchoring system[J]. Journal of test and measurement technology,2003,17(2):145−149.

[18] 郭世明,高才坤. 弹性应力波法锚杆质量检测初探[J]. 西部探矿工程,1999,11(2):9−10. GUO Shiming,GAO Caikun. Preliminary discussion on the elastic stress theory applied in anchor quality test[J]. West-China Exploration Engineering,1999,11(2):9−10.

[19] 国家能源局. 水电水利工程锚索施工质量无损检测规程：DL/T 5820—2021[S]. 北京：中国电力出版社，2021.

[20] 张昌锁,李义,赵阳升,等. 锚杆锚固质量无损检测中的激发波研究[J]. 岩石力学与工程学报,2006,25(6):1240−1245. ZHANG Changsuo,LI Yi,ZHAO Yangsheng,et al. Study on optimum excitation wave in grout quality nondestructive testing of rock bolt[J]. Chinese Journal of Rock Mechanics and Engineering,2006,25(6):1240−1245.