Design and development of the deep-rock in-situ condition-preserved coring calibration platform

查看全文 作　　者：Yihang [1]Li;Heping [1,2,3]Xie;Ru [1]Zhang;Zetian [1]Zhang;Zhilong [1]Zhang;Heng [1]Gao;Wei [4]Huang;Jixun [5]Zhang;Jiming [5]Gao;Xin [6]Ma;Ruibing [7]Xu

机构地区：[1]State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering,College of Water Resource and Hydropower,Sichuan University,Chengdu 610065,China;[2]Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization,Institute of Deep Earth Sciences and Green Energy,College of Civil and Transportation Engineering,Shenzhen University,Shenzhen 518060,China;[3]Shenzhen Key Laboratory of Deep Underground Engineering Sciences and Green Energy,Shenzhen University,Shenzhen 518060,China;[4]School of Mechanical Engineering,Sichuan University,Chengdu 610065,China;[5]Donghua Zhuoyue Technology Co.,Ltd.,Chengdu 611130,China;[6]Special Equipment Safety Supervision Inspection Institute of Jiangsu Province,Nanjing 210036,China;[7]Inner Mongolia North Heavy Industries Group Co.,Ltd.,Baotou 014033,China

出　　处：《International Journal of Mining Science and Technology》索引2023年第33卷第11期,共19页

基　　金：supported by National Natural Science Foundation of China(Nos.51827901 and 52225403);the Shenzhen National Science Fund for Distinguished Young Scholars(RCJC20210706091948015). 摘　　要：To systematically validate and calibrate the theory and technology of the deep in-situ conditionpreserved coring, the in-situ conditions at different depths should be simulated, and the full-size coring tests should be carried out in this simulated environment. Therefore, a deep-rock in-situ conditionpreserved coring calibration platform was designed and developed. The self-tightening sealing structure and the quick-disassembly structure were designed on the basis of an innovative segmented nonuniformdiameter structure, which was a breakthrough from the traditional high-pressure vessel frame and was verified by finite element simulation and actual testing under extreme working conditions, respectively.To simulate the actual deep in-situ environment with a temperature of 150℃ and pressure of 140 MPa for a large Φ450 mm×H1400 mm core, temperature and pressure control systems were designed by coupling, and a pre-embedded high-pressure-resistant temperature sensor was designed. Finally, highprecision assembly automation, complex movement coordination of the coring device with the platform,and rotary dynamic sealing were achieved by utilizing the combination of adaptive cabin body servo control and an adaptive mechanical structure in a limited space, laying a solid foundation for the calibration of in-situ condition-preserved coring. 关键词：In-situ condition-preserved coring CALIBRATION Deep Earth science Coring simulation Rotary dynamic seal

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Design and development of the deep-rock in-situ condition-preserved coring calibration platform

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