基于角度量测的岩土圆柱试件环向变形测试方法及系统应用

doi:10.13722/j.cnki.jrme.2018.0727

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (882 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to obtain the accurate circumferential deformation and the mechanical characteristics of post-peak dilation of the standard cylindrical specimen during the whole process of stress-strain test，a new type of circumferential deformation test method for standard specimens was proposed with the angle measurement based on the MTS chain circumferential extensometer. The principle of measurement was described in the paper. A chain rolling belt connected with the angle sensor is used in the system to twine around the standard circular specimen. The data acquisition system programmed by LABVIEW is used to achieve the automatic high precision acquisition and rapid recording. The measurement accuracy is 0.004 mm and the measurement range is 30 mm，which is adequate for many loading environments such as the gas-solid coupling loading and the tri-axial loading. The reliability and accuracy of this system were verified by the MTS chain extensometer and the close-range photogrammetry. The adsorption degradation test of coal with different gases was carried out. The briquettes with the same prefabricated strength were filled with the gases under the same pressure(He，N2，CH4 and CO2)，and then the axial loading test was carried out after the full adsorption. The deformation and instability of coal body during loading were obtained. The effects of gas properties on the volume expansion，the strength and fracture development of coal were compared and analyzed. The experimental results show that with the improvement of gas adsorption，the coal enters the expansion stage from the compaction stage earlier，and the position of the ultimate load value and volume expansion point reached earlier with the sequence for gases：CO2＞CH4＞N2＞He. The impregnation of He without adsorption does not degrade the coal，but the coal body strength is significantly reduced by adding the adsorptive CO2. The peak strength decreases by 32.05% after the CO2 adsorption under the pressure of 1.0 MPa. The whole system is made of modules and can work synchronously with the axial LVDT displacement meter.

Key words： rock mechanics cylindrical specimen circumferential deformation test method system application

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Hanpeng1
	LI Qingchuan1
	LI Shucai1
	ZHANG Qiangyong1
	YUAN Liang2
	LIU Zhongzhong1

Cite this article:

WANG Hanpeng1,LI Qingchuan1,LI Shucai1, et al. Testing method and system application of circumferential deformation of cylindrical rock and soil specimens based on angle measurement[J]. , 2018, 37(11): 2576-2583.

URL:

http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.0727 OR http://www.rockmech.org/EN/Y2018/V37/I11/2576

[9]	YAMAGUCHI I. A laser-speckle strain gauge[J]. Journal of Physics E Scientific Instruments，2000，14(11)：1 270-1 273.
[18]	李铀. 利用电容原理测量试件的横向变形[J]. 岩土力学，1990，11(3)：75-78.(LI You. Measuring lateral deformation of samples with eIectric-capacity principle[J]. Rock and Soil Mechanics，1990， 11(3)：75-78.(in Chinese))
[15]	CO D P. Standard test method for poisson?s ratio at room temperature[c]// American Society for Testing and Materials. Philadelphia：[s.n.]，1984：266.
[16]	MTS Systems Corporation. Circumferential extensometer strain calculation[R]. [S.l.]：MTS Systems Corporation，2005.
[2]	李晓照，邵珠山. 脆性岩石渐进及蠕变失效特性宏细观力学模型研究[J]. 岩土工程学报，2016，38(8)：1 391-1 398.(LI Xiaozhao，SHAO Zhushan. Macro-micro mechanical model for progressive and creep failure of brittle rock[J]. Chinese Journal of Geotechnical Engineering，2016，38(8)：1 391-1 398.(in Chinese))
[11]	马永尚，陈卫忠，杨典森，等. 基于三维数字图像相关技术的脆性岩石破坏试验研究[J]. 岩土力学，2017，38(1)：117-123.(MA Yongshang，CHEN Weizhong，YANG Diansen，et al. Experimental study of brittle rock failure based on three-dimensional digital image correlation technique[J]. Rock and Soil Mechanics，2017，38(1)：117-123.(in Chinese))
[20]	YILMAZ C，AKALIN C，KOCAMAN E S，et al. Monitoring Poisson?s ratio of glass fiber reinforced composites as damage index using biaxial Fiber Bragg Grating sensors[J]. Polymer Testing，2016，53(8)：98-107.
[5]	唐浩，李天斌，陈国庆，等. 水力作用下砂岩三轴卸荷试验及破裂特性研究[J]. 岩土工程学报，2015，37(3)：519-525.(TANG Hao，LI Tianbin，CHEN Guoqing，et al. Triaxial unloading tests on rupture characteristics of sandstone under hydro-mechanical coupling conditions[J]. Chinese Journal of Geotechnical Engineering，2015，37(3)：519-525.(in Chinese))
[14]	李顺群，高凌霞，冯慧强，等. 一种接触式三维应变花的工作原理及其应用[J]. 岩土力学，2015，36(5)：1 513-1 520.(LI Shunqun，GAO Lingxia，FENG Huiqiang，et al. Principle and application of a three-dimensional contacting strain rosette[J]. Rock and Soil Mechanics，2015，36(5)：1 513-1 520.(in Chinese))
[23]	李元海，贾冉旭，杨苏. 基于岩土渐进变形特征的数字散斑相关优化分析法[J]. 岩土工程学报，2015，37(8)：1 490-1 496.(LI Yuanhai，JIA Ranxu，YANG Su. Optimized method for DSCM based on progressive displacement characteristics of geotechnical materials[J]. Chinese Journal of Geotechnical Engineering，2015，37(8)：1 490-1 496.(in Chinese))
[8]	ANGELIDI M，VASSILOPOULOS A P，KELLER T. Displacement rate and structural effects on Poisson ratio of a ductile structural adhesive in tension and compression[J]. International Journal of Adhesion and Adhesives，2017，78(10)：13-22.
[17]	王伟，题正义，张宏岩. 改进型岩石试验机检测系统的研究[J]. 矿山机械，2008，36(4)：63-65.(WANG Wei，TI Zhengyi，ZHANG Hongyan. Study on detection system of modified rock testing machine[J]. Mining and Processing Equipment，2008，36(4)：63-65.(in Chinese))
[26]	中华人民共和国国家标准编写组. GB/T50266—99 工程岩体试验方法标准[S]. 北京：中国计划出版社，1999：15-16.(The National Standards Compilation Group of People?s Republic of China. GB/T50266—99 Standard for test method of engineering rock mass[S]. Beijing：China Planning Press，1999：15-16.(in Chinese))
[3]	夏开文，徐颖，姚伟，等. 静态预应力条件作用下岩板动态破坏行为试验研究[J]. 岩石力学与工程学报，2017，36(5)：1 122-1 132. (XIA Kaiwen，XU Ying，YAO Wei，et al. Experimental study of dynamic fracture behavior of brittle rock plate under static pre-loading[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(5)：1 122-1 132.(in Chinese))
[12]	王波，吴亚波，郭洪宝，等. 2D-C/SiC复合材料偏轴拉伸力学行为研究[J]. 材料工程，2017，45(7)：91-96.(WANG Bo，WU Yabo，GUO Hongbao，et al. Investigation on off-axis tensile mechanical behaviors of 2D-C/SiC composites[J]. Journal of Materials Engineering，2017，45(7)：91-96.(in Chinese))
[21]	汪斌，朱杰兵，邬爱清. MTS815系统变形测试技术的若干改进[J]. 长江科学院学报，2010，27(12)：94-98.(WANG Bin，ZHU Jiebing，WU Aiqing. Some improvements of deformation measurement techniques on MTS815 system[J]. Journal of Yangtze River Scientific Research Institute，2010，27(12)：94-98.(in Chinese))
[1]	BELL J F，TRUESDELL C. The experimental foundations of solid mechanics[J]. International Journal of Machine Tools and Manufacture，2009，49(15)：1 234-1 237.
[4]	MOUSTABCHIR H，ARBAOUI J，AZARI Z，et al. Experimental/numerical investigation of mechanical behaviour of internally pressurized cylindrical shells with external longitudinal and circumferential semi-elliptical defects[J]. Alexandria Engineering Journal，2017，(6)：1-13.
[6]	尤明庆，华安增. 岩样三轴压缩过程中的环向变形[J]. 中国矿业大学学报，1997，26(1)：1-4.(YOU Mingqing，HUA Anzeng. Circumferential deformation of rock sample in pseudo-triaxial compression[J]. Journal of China University of Mining and Technology，1997，26(1)：1-4.(in Chinese))
[7]	种照辉，李学华，鲁竞争，等. 基于数字图像与数值计算的节理岩体锚固效应研究[J]. 岩土工程学报，2017，39(7)：1 225-1 233. (CHONG Zhaohui，LI Xuehua，LU Jingzheng，et al. Anchorage behaviour of specimens containing a single fissure based on digital image correlation and numerical method[J]. Chinese Journal of Geotechnical Engineering，2017，39(7)：1 225-1 233.(in Chinese))
[10]	郭文婧，马少鹏，康永军，等. 基于数字散斑相关方法的虚拟引伸计及其在岩石裂纹动态观测中的应用[J]. 岩土力学，2011，32(10)：3 196-3 200.(GUO Wenjing，MA Shaopeng，KANG Yongjun，et al. Virtual extensometer based on digital speckle correlation method and its application to deformation field evolution of rock specimen[J]. Rock and Soil Mechanics，2011，32(10)：3 196-3 200.(in Chinese))
[13]	第五强强，张伟伟. 基于应变片的弹性体分布式位移测量方法[J]. 西北工业大学学报，2017，35(3)：422-427.(DIWU Qiangqiang，ZHANG Weiwei. Measurement of distributed displacement for elastic[J]. Journal of Northwestern Polytechnical University，2017，35(3)：422-427.(in Chinese))
[19]	PAEPGEM W V，BAERE I D，LAMKANI E，et al. Monitoring quasi-static and cyclic fatigue damage in fibre-reinforced plastics by Poisson?s ratio evolution[J]. International Journal of Fatigue，2010，32(1)：184-196.
[22]	ZHANG Q B，ZHAO J. A review of dynamic experimental techniques and mechanical behaviour of rock materials[J]. Rock Mechanics and Rock Engineering，2014，47(4)：1 411-1 478.
[24]	王汉鹏，张庆贺，袁亮，等. 含瓦斯煤相似材料研制及其突出试验应用[J]. 岩土力学，2015，36(6)：1 676-1 682.(WANG Hanpeng，ZHANG Qinghe，YUAN Liang，et al. Development of a similar material for methane-bearing coal and its application to outburst experiment[J]. Rock and Soil Mechanics，2015，36(6)：1 676-1 682. (in Chinese))
[25]	李清川，王汉鹏，李术才，等. 可视化恒容气固耦合试验系统的研发与应用[J]. 中国矿业大学学报，2018，47(1)：148-156.(LI Qingchuan，WANG Hanpeng，LI Shucai，et al. Development and application of a gas-solid coupling test system in the visual and constant volume loading state[J]. Journal of China University of Mining and Technology，2018，47(1)：148-156.(in Chinese))
[27]	刘力源，朱万成，魏晨慧，等. 气体吸附诱发煤强度劣化的力学模型与数值分析[J]. 岩土力学，2018，39(4)：1 500-1 508.(LIU Liyuan，ZHU Wangcheng，WEI Chenhui，et al. Mechanical model and numerical analysis for gas adsorption-induced coal mechanical property alterations[J]. Rock and Soil Mechanics，2018，39(4)：1 500-1 508.(in Chinese))