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

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外文摘要：To systematically validate and calibrate the theory and technology of the deep in-situ condition-preserved 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 condition-preserved 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 nonuniform-diameter 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°C and pressure of 140 MPa for a large Φ450 mm×H1400 mm core,temperature and pressure control systems were designed by cou-pling,and a pre-embedded high-pressure-resistant temperature sensor was designed.Finally,high-precision 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 con-trol and an adaptive mechanical structure in a limited space,laying a solid foundation for the calibration of in-situ condition-preserved coring.

外文关键词：

In-situ condition-preserved coring calibrationDeep Earth scienceCoring simulationRotary dynamic seal

作者：

Yihang Li、Heping Xie、Ru Zhang、Zetian Zhang、Zhilong Zhang、Heng Gao、Wei Huang、Jixun Zhang、Jiming Gao、Xin Ma、Ruibing Xu

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作者单位：

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

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

Shenzhen Key Laboratory of Deep Underground Engineering Scienc

School of Mechanical Engineering,Sichuan University,Chengdu 610065,China

Donghua Zhuoyue Technology Co.,Ltd.,Chengdu 611130,China

Special Equipment Safety Supervision Inspection Institute of Jiangsu Province,Nanjing 210036,China

Inner Mongolia North Heavy Industries Group Co.,Ltd.,Baotou 014033,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaShenzhen National Science Fund for Distinguished Young Scholars

项目编号：

5182790152225403RCJC20210706091948015

出版年：

2023

DOI：

10.1016/j.ijmst.2023.10.003

矿业科学技术学报(英文版)

中国矿业大学

矿业科学技术学报(英文版)

CSTPCDCSCDEI

影响因子：1.222

ISSN：2095-2686

年,卷(期)：2023.33(11)

参考文献量8