对现有的边坡监测技术进行总结分析,阐明声发射监测技术在边坡滑塌破坏过程中的信号采集、定位等方面的独特优势。通过详述声发射边坡监测技术的发展历程与现状,指出声发射边坡监测的影响因素。并结合边坡声发射监测实例分析,表明该技术不仅能实现对边坡滑移面定位,还能对边坡破坏水平进行分析,将声发射参数划分为不同的破坏等级来判断边坡的稳定性。最后指出声发射边坡监测技术在波导杆、耦合材料、传感器布置方式等方面存在的问题,波导杆和耦合材料的选择、传感器布置方式以及耦合材料产生的声发射与周围岩体破坏的相关性等方面有待进一步的研究与探索。
Abstract
The unique advantages of acoustic emission (AE) technology in signal collection and positioning of slope collapse failure are expounded by analyzing and summarizing existing slope monitoring technologies. By detailing the development and current situation of AE slope monitoring technology, the influential factors of AE slope monitoring are put forward. Case analysis demonstrates that AE technology could not only locate slip surface, but also can be used to judge the failure state by classifying the acoustic emission parameters into different damage levels. In addition, problems in waveguide, coupling agent, and sensor arrangement are pointed out. The selection of waveguide and coupling materials, the arrangement of sensors, and the correlation between acoustic emission from coupling material and surrounding rock mass are to be further studied and explored.
关键词
边坡监测 /
声发射 /
波导杆 /
耦合材料 /
滑移面定位
Key words
slope monitoring /
acoustic emission /
waveguide /
coupling material /
slip plane positioning
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 曹华峰. 边坡工程监测理论与技术基础初步研究[D]. 哈尔滨:中国地震局工程力学研究所, 2008.
[2] BYUN Y S, SAGONG M, KIM S C,et al. A study on Using Acoustic Emission in Rock Slope with Difficult Ground—Focused on Rainfall[J]. Geosciences Journal, 2012, 16(4): 435-445.
[3] 丁继新. 边坡位移监测的若干技术问题[J]. 水文地质工程地质, 2007, 34(5):110-114.
[4] 郭永建. 基于锚杆轴力监测的公路岩质边坡稳定性评价研究[D]. 西安:长安大学, 2011.
[5] 李核归,张茹,高明忠,等.岩石声发射技术研究进展[J]. 地下空间与工程学报,2013,9(增1):1794-1804.
[6] 戴峰, 姜鹏, 徐奴文,等. 蓄水期坝肩岩质边坡微震活动性及其时频特性研究[J]. 岩土力学, 2016(增1):359-370.
[7] 田宗勇,姚姚,赵晓鸣.大地电磁法在沪蓉国道地质勘察中的应用[J].raybet体育在线
院报,2007,24(2):55-57.
[8] 尹贤刚, 李庶林. 声发射技术在岩土工程中的应用[J]. 采矿技术, 2002, 2(4):39-42.
[9] 李鹏. 基于模态声发射检测技术的管道泄漏研究[D]. 北京:中国石油大学(北京), 2008.
[10] DIXON N, HILL R, KAVANAGH J.The Use of Acoustic Emission to Monitor the Stability of Soil Slopes[C]∥Advances in Site Investigation Practice: Proceedings of the International Conference. London, March 30-31, 1995: 739-749.
[11] DIXON N, SPRIGGS M P, SMITH A,et al. Quantification of Reactivated Landslide Behaviour Using Acoustic Emission Monitoring[J]. Landslides, 2015, 12(3): 549-560.
[12] 秦四清. 声发射技术在国外边坡工程监测中的应用[J].露天采矿技术,1990,(4):26-29.
[13] ZAKI A, CHAI H K, RAZAK H A, et al. Monitoring and Evaluating the Stability of Soil Slopes: A Review on Various Available Methods and Feasibility of Acoustic Emission Technique[J]. Comptes Rendus Geoscience, 2014, 346(9): 223-232.
[14] DIXON N, SMITH A, SPRIGGS M, et al. Stability Monitoring of a Rail Slope Using Acoustic Emission[J]. Proceedings of the Institution of Civil Engineers-Geotechnical Engineering, 2015, 168(5): 373-384.
[15] SHIOTANI T, OHTSU M.Prediction of Slope Failure Based on AE Activity[M]∥Acoustic Emission: Standards and Technology Update. USA: ASTM International, 1999.
[16] SHIOTANI T, OHTSU M, IKEDA K.Detection and Evaluation of AE Waves Due to Rock Deformation[J]. Construction and Building Materials, 2001, 15(5): 235-246.
[17] DIXON N, SPRIGGS M.Quantification of Slope Displacement Rates Using Acoustic Emission Monitoring[J]. Canadian Geotechnical Journal, 2007, 44(8): 966-976.
[18] CHEON D S, JUNG Y B, PARK E S, et al. Evaluation of Damage Level for Rock Slopes Using Acoustic Emission Technique with Waveguides[J]. Engineering Geology, 2011, 121(1): 75-88.
[19] 于济民. 滑坡预报参数的选择和预报标准的确定方法[J]. 中国地质灾害与防治学报, 1992,(2):41-49.
[20] 于济民. 滑坡动态监测预报技术[J]. 中国铁道科学, 1992,(2):81-91.
[21] SHIOTANI T.Evaluation of Long-term Stability for Rock Slope by Means of Acoustic Emission TEchnique[J]. NDT & E International, 2006, 39(3): 217-228.
[22] 樊成. 盘山公路沿线边坡岩体稳定性实时监测系统[D]. 武汉:武汉科技大学, 2015.
基金
国家自然科学基金项目(51364012); 江西省科技计划项目(20143ACG70010)
PDF(5226 KB)
