

浏览全部资源
扫码关注微信
1.中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏 徐州 221116
2.中国矿业大学力学与土木工程学院,江苏 徐州 221116
3.深圳市城市公共安全技术研究院,广东 深圳 518034
4.中国电建集团华东勘测设计研究院有限公司,浙江 杭州 310014
5.山东高速建设管理集团有限公司,山东 济南250098
Received:29 December 2021,
Revised:2022-03-02,
Published:28 October 2022
移动端阅览
莫品强,胡裕琛,王宽君等.基于离散元法的温度静力触探贯入与传热研究[J].防灾减灾工程学报,2022,42(05):913-921.
MO Pinqiang,HU Yuchen,WANG Kuanjun,et al.Penetration and Heat Transfer of T‑CPT based on DEM Simulation[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(05):913-921.
莫品强,胡裕琛,王宽君等.基于离散元法的温度静力触探贯入与传热研究[J].防灾减灾工程学报,2022,42(05):913-921. DOI: 10.13409/j.cnki.jdpme.20211229002.
MO Pinqiang,HU Yuchen,WANG Kuanjun,et al.Penetration and Heat Transfer of T‑CPT based on DEM Simulation[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(05):913-921. DOI: 10.13409/j.cnki.jdpme.20211229002.
温度静力触探是一种新型原位测试方法,可同时获取土体的力学和热学参数,为浅层地温能资源勘查提供技术保障。为研究温度静力触探的贯入与传热机理,通过离散元数值模拟实现了离散元模型的建立和试样的力学和热学参数标定。研究分析了贯入过程中的贯入阻力变化、土体应力场、位移场及位移路径;获得了加热‑散热过程中探头加热段与隔热段的温度响应规律以及土体温度场演化,并与室内模型试验进行了对比分析。采集的温度变化曲线通过数据解译反演得到了土体的导热系数,为温度静力触探的贯入‑传热机理研究及工程应用奠定了理论依据。研究结果表明:贯入过程中,贯入阻力随深度的增加而增加,且土体颗粒位移范围在距锥身
B
/2内;传热过程中,探头加热60 s,加热段实现了5.5 ℃的升温;在加热和散热的初期,探头的温度变化最快,与实验结果相同;利用探头散热温度所反演导热系数为0.330 W/(m·K),误差为6.5%,优于加热数据反演结果。
Thermal cone penetration test (T-CPT) is a new type of in-situ testing method, for obtaining both mechanical and thermal properties of soil layers, providing technical support for shallow geothermal resources exploration. To study the penetration and heat transfer mechanism of T-CPT, the numerical simulation is conducted in this study by establishing a model based on the discrete element method (DEM), followed by calibration of mechanical and thermal parameters of the soil sample. Penetration resistance, soil distributions of stresses and displacement are analyzed during the penetration process. The thermal responses of heating and insulation sections are obtained in the following heating and cooling processes, as well as the evolution of the temperature field in the surrounding soil. Furthermore, the numerical results are compared with the laboratory model test. The measured temperature curves are then used to interpret soil thermal conductivity. It provides a theoretical basis for insights into the mechanisms of penetration and heat transfer of T-CPT and its implications in geotechnical engineering. The results show that the penetration resistance increases with the increase of depth in the process of the penetration, and the soil particle displacement range is within
B
/2 of the cone. During the heat transfer process, the probe is heated for 60 seconds, and the heating section achieves a heating of 5.5 °C. In the early stages of heating and dissipation, the temperature of the probe changes the fastest, which is the same as in the experimental results. The thermal conductivity of the inversion using the heat dissipation temperature of the probe is 0.330 W/(m·K), and the error is 6.5%, which is better than the heating data inversion result.
Alexis C , Emmanuel A , Didier D , et al . In situ characterization of Thermopylae soil properties-Measurements and monitoring of soil water content with a thermal probe [J]. Journal of renewable and Sustainable Energy , 2012 , 4 : 43 - 106 .
王贵玲 , 刘彦广 , 朱喜 , 等 . 中国地热资源现状及发展趋势 [J]. 地学前缘 , 2020 , 27 ( 1 ): 1 - 9 .
Wang G L , Liu Y G , Zhu X , et al . The status and development trend of geothermal resources in China [J]. Earth Science Frontiers , 2020 , 27 ( 1 ): 1 - 9 . (in Chinese)
Lutenegger A J , Lally M J . In situ measurement of thermal conductivity in a soft clay [C]∥ Znternational Conferrence on In-Situ Measurement of Soil Properties and Case Histories . Bandung : Parahyangan Catholic University , 2001 .
Akrouch G A , Briaud J L , Sanchez M , et al . Thermal cone test to determine soil thermal properties [J]. Journal of Geotechnical and Geoenvironmental Engineering 2016 , 142 ( 3 ): 04015085 .
Vardon P J , Baltoukas D . Interpreting and validating the thermal cone penetration test (T-CPT) [J]. Géotechnique , 2019 , 69 ( 7 ): 580 - 592 .
刘松玉 , 郭易木 , 张国柱 , 等 . 热传导CPT探头的研发与应用 [J]. 岩土工程学报 , 2020 , 42 ( 2 ): 354 - 361 .
Liu S Y , Guo Y M , Zhang G Z , et al . Development and application of heat conduction CPT probe [J]. Chinese Journal of Geotechnical Engineering , 2020 , 42 ( 2 ): 354 - 361 . (in Chinese)
张文伟 , 蔡国军 , 刘松玉 . 热传导CPTU技术理论与工程应用研究进展 [J]. 地下空间与工程学报 , 2018 , 14 ( 增2 ): 737 - 744 .
Zhang W W , Cai G J , Liu S Y . Review of thermal conductivity piezocne penetration testing in geothermal engineering [J]. Chinese Journal of Underground Space and Engineering , 2018 , 14 ( Sup2 ): 737 - 744 . (in Chinese)
Mo P Q , Ma D Y , Zhu Q Y , et al . Interpretation of heating and cooling data from thermal cone penetration test using a 1D numerical model and a PSO algorithm [J]. Computers and Geotechnics , 2021 , 130 : 103908 .
刘春 . 地质与岩土工程矩阵离散元分析 [M]. 北京 : 科学出版社 , 2019 .
Liu C . Matrix discrete element analysis of geology and geotechnical engineering [M]. Beijing : Science China Press , 2019 . (in Chinese)
邓益兵 , 杨彦骋 , 史旦达 , 等 . 三维离散元大尺度模拟中变粒径方法的优化及其应用 [J]. 岩土工程学报 , 2017 , 39 ( 1 ): 62 - 70 .
Deng Y B , Yang Y C , Shi D D , et al . Refinement and application of variable particle-size methods in 3D discrete element modelling for large-scale problems [J]. Chinese Journal of Geotechnical Engineering , 2017 , 39 ( 1 ): 62 - 70 .
杨彦骋 , 邓益兵 , 史旦达 , 等 . 采用环向周期边界的静力触探三维离散元模拟 [J]. 岩石力学与工程学报 , 2016 , 35 ( 增1 ): 3372 - 3384 .
Yang Y C , Deng Y B , Shi D D , et al . Three-dimensional DEM simulation of cone penetration test by using circumferential periodic boundary [J]. Chinese Journal of Rock Mechanics and Engineering , 2016 , 35 ( Sup1 ): 3372 - 3384 . (in Chinese)
Zhao S W , Evans T M , Zhou X . Effects of curvature-related DEM contact model on the macro- and micro-mechanical behaviours of granular soils [J]. Géotechnique , 2018 , 68 ( 12 ): 1085 - 1098 .
Nardelli V , Coop M R , Andrade J E , et al . An experimental investigation of the micromechanics of Eglinsand [J]. Powder Technol , 2017 , 312 : 166 - 174 .
Jiang M J , Yu H S , Harris D . Discrete element modelling of deep penetration in granular soils [J]. International Journal for Numerical and Analytical Methods in Geomechanics , 2006 , 30 : 335 - 361 .
Zhao S W , Zhao J D , Guo N . Universality of internal structure characteristics in granular media under shear [J]. Physical review E , 2020 , 101 : 012906 .
张品 . 基于DEM方法的散体颗粒热传导模拟 [D]. 长沙 : 中南大学 , 2011 .
Zhang P . Simulation of heat conduction of bulk jparticles based on DEM method [D]. Changsha : Central South University , 2011 . (in Chinese)
桑宏伟 , 张丹 , 刘春 , 等 . 基于离散元法的能源管传热过程模拟 [J]. 防灾减灾工程学报 , 2019 , 39 ( 4 ): 645 - 650 .
Sang H W , Zhang D , Liu C , et al . Numerical simulation on haat transfer of energy PHC pile based on discrete element method [J]. Journal of Disaster Prevention and Mitigation Engineering , 2019 , 39 ( 4 ): 645 - 650 . (in Chinese)
Yun T S , Santamarina J C . Fundamental study of thermal conduction in dry soils [J]. Granular Matter , 2008 , 10 ( 3 ): 197 - 207 .
0
Views
0
下载量
1
CSCD
Publicity Resources
Related Articles
Related Author
Related Institution
苏公网安备32010202012147号