基于多曲率压头的钻孔横向贯入仪研制及其初步应用

doi:10.13722/j.cnki.jrme.2014.1480

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (471 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要针对深部岩土工程岩石参数获取成本高的问题，本研究借鉴压痕试验技术，研制了钻孔横向贯入仪，用于在钻孔中测定岩石的相关岩石力学参数。该设备具有便携、快捷、高效、低成本的特点。该设备通过获取4个不同曲率半径的压头在压入过程中的载荷-位移曲线，并对这些曲线进行分析从而获取岩石的相关力学参数。在大理石上进行钻孔横向贯入仪的初步应用，并在试验中引入声发射监测塑性变形的发展情况，揭示试验的压入曲线特性，从试验曲线中提取岩石的模量，通过与单轴试验结果进行对比，用钻孔横向贯入仪试验曲线提取的模量介于单轴试验的割线模量和弹性模量之间，并且与割线模量较为接近。认为钻孔横向贯入仪的试验结果可以代表现场岩石的力学参数，可供工程参考。

	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 ： Hertz接触问题, 压痕实验, 力学参数, 钻孔横向贯入仪

Abstract：Drillhole penetrometer instrument is developed to solve the high cost problems existing in acquiring the rock parameters in deep geotechnical engineering；it uses the technology of indentation test for references and is applied to measure the rock?s mechanical parameters in drillhole. This apparatus was characterized by portable，convenience，efficiency，and low-cost. The apparatus would acquire the load-displacement curves produced by four indenters with different curvature radiuses in the process of loading. The elastic-plastic parameters could be acquired by the analysis of these curves. The preliminary application of drillhole penetrometer instrument was conducted on the marble，and during which the plastic deformation development situation was monitored by introducing acoustic emission technology，and thus show us the characteristics of the identification curves. The elastic modulus value was acquired through the relevant research curves and then according to the contrast between the results of this research and uniaxial compression test，the modulus value extracted through the curves of drillhole penetrometer instrument is between the value of secant modulus and modulus of elasticity in uniaxial compression test and is closer to secant modulus. As a result，it scientifically proves that the research results acquired through drillhole penetrometer instrument can represent the mechanical parameters in field rock.

Key words： Hertz contact problem indentation test parameter of mechanics drillhole penetrometer instrument

引用本文:

李小春1，王安礼1，刘召胜2，王少泉2，石露1，崔银祥1，江振波3. 基于多曲率压头的钻孔横向贯入仪研制及其初步应用[J]. 岩石力学与工程学报, 2015, 34(09): 6-6.
LI Xiaochun1，Wang Anli1，LIU Zhaosheng2，WANG Shaoquan2，SHI Lu，CUI Yinxiang1，JIANG Zhenbo3. DEVELOPMENT AND PRELIMINARY APPLICATION OF DRILLHOLE PENETROMETER INSTRUMENT BASED ON MULTI-CURVATURE INDENTER. , 2015, 34(09): 6-6.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2014.1480 或 http://www.rockmech.org/CN/Y2015/V34/I09/6

[23]	TABOR D. The hardness of metals[M]. Oxford：Clarendon Press，1951 " target="_blank">
[13]	SNEDDON I N. Fourier transforms[M]. New York：McGraw-Hill，1951. " target="_blank">
[2]	JOHNSON K L. Contact mechanics[M]. Cambridge University Press，1987. " target="_blank">
[5]	JOHNSON K L. The correlation of indentation experiments[J]. Journal of the Mechanics and Physics of Solids，1970，18(2)：115-126. " target="_blank">
[1]	FISCHER-CRIPPS A C. Introcuction to contact mechanics[M]. USA：Springer，2007. " target="_blank">
[3]	YAN W Y，SUN Q P，Liu H Y. Spherical indentation hardness of shape memory alloys[J]. Materials Science and Engineering：A，2006，425(1/2)：278-285. " target="_blank">
[4]	YAN W Y，PUN C L. Spherical indentation of metallic foams[J]. Materials Science and Engineering：A，2010，527(13/14)：3 166-3 175. " target="_blank">
[8]	HILL R，LEE E H，TUPPER S J. The theory of wedge indentation of ductile materials[J]. Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences，1947，188(1013)：273-289. " target="_blank">
[11]	LEITE M H，FERLAND F. Determination of unconfined compressive strength and young's modulus of porous materials by indentation tests[J]. Engineering Geology，2001，59(3/4)：267-280. " target="_blank">
[19]	CHOLLACOOP N，DAO M，SURESH S. Depth-sensing instrumented indentation with dual sharp indenters[J]. Acta Materialia，2003，51(13)：3 713-3 729. " target="_blank">
[6]	SHAW M C，DESALVO G J. A new approach to plasticity and its application to blunt two dimensional indenters[J]. Journal of Manufacturing Science and Engineering，1970，92(2)：469-479. " target="_blank">
[9]	王伟，徐卫亚. 一个新的岩石力学特性测定方法 [J]. 岩土力学，2008，29(增刊)：538-544. (WANG Wei，XU Weiya. A new method of testing rock properties[J]. Rock and Soil Mechanics，2008，29(Suup)：538-544.(in Chinese)) " target="_blank">
[12]	HERTZ H. On the contact of elastic solids[J]. J. Reine Angew. Math，1881，92：156-171. " target="_blank">
[16]	CHENG Y T，CHENG C M. Can stress-strain relationships be obtained from indentation curves using conical and pyramidal indenters[J]. Journal of Materials Research，1999，14：3 493-3 496. " target="_blank">
[20]	DAO M，CHOLLACOOP N，VAN VLIET K J，et al. Computational modeling of the forward and reverse problems in instrumented sharp indentation[J]. Acta Materialia，2001，49(19)：3 899-3 918. " target="_blank">
[7]	SHAW M C，DESALVO G J. On the plastic flow beneath a blunt axisymmetric indenter[J]. Journal of Manufacturing Science and Engineering，1970，92(2)：480-492. " target="_blank">
[14]	CHEN X，OGASAWARA N，ZHAO M，et al. On the uniqueness of measuring elastoplastic properties from indentation：The indistinguishable mystical materials[J]. Journal of the Mechanics and Physics of Solids，2007，55(8)：1 618-1 660. " target="_blank">
[18]	CAO Y P，QIAN X Q，LU J，et al. An energy-based method to extract plastic properties of metal materials from conical indentation tests[J]. Journal of Materials Research，2005，20(05)：1 194-1 206. " target="_blank">
[22]	SWADDIWUDHIPONG S，THO K K，LIU Z S，et al. Material characterization based on dual indenters[J]. International Journal of Solids and Structures，2005，42(1)：69-83. " target="_blank">
[10]	SZWEDZICKI T. Indentation hardness testing of rock[J]. International Journal of Rock Mechanics and Mining Sciences，1998，35(6)：825-829. " target="_blank">
[15]	CHENG Y T，CHENG C M. Scaling，dimensional analysis，and indentation measurements [J]. Materials Science and Engineering：R： Reports，2004，44(4/5)：91-149. " target="_blank">
[17]	BUCAILLE J L，STAUSS S，FELDER E，et al. Determination of plastic properties of metals by instrumented indentation using different sharp indenters[J]. Acta Materialia，2003，51(6)：1 663-1 678. " target="_blank">
[21]	OGASAWARA N，CHIBA N，CHEN X. Representative strain of indentation analysis[J]. Journal of Materials Research，2005，20：2 225-2 234. " target="_blank">