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1.发明授权公开(公告)号：US10697281B2
公开(公告)日：2020-06-30
申请号：US16061799
申请日：2018-02-12
Applicant: Northeastern University
Inventor： Xiating Feng , Zhengwei Li , Xiwei Zhang , Jun Tian , Chengxiang Yang , Zhibin Yao , Qiang Wang , Yanhua Gong
Abstract: A large-scale three-dimensional physical model test system for a deep cavern group comprises a base, an anti-deformation prestressed loading frame assembly, a load applying assembly, a model sample preparation and transportation assembly and a multifunctional hydraulic loading system assembly. The anti-deformation prestressed loading frame assembly and the model sample preparation and transportation assembly are both arranged on the base. The load applying assembly is arranged on the anti-deformation prestressed loading frame assembly, and the load applying assembly is connected with the multifunctional hydraulic loading system assembly. A model sample is subjected to long-time load holding, dynamic disturbance and displacement control overload under multi-surface multi-point cooperative control through cooperation between the load applying assembly and the multifunctional hydraulic loading system assembly.
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公开(公告)号：US11951651B2
公开(公告)日：2024-04-09
申请号：US17599867
申请日：2020-11-16
Applicant: Northeastern University
Inventor： Xiating Feng , Zhengwei Li , Shiming Mei , Yanhua Gong
CPC classification number: B28B1/001 , B28B17/0081 , B33Y10/00 , B33Y50/02
Abstract: Provided is an intelligent 3D printing method for a large 3D deep complex engineering geological model, including the steps of firstly, determining physical and mechanical parameters of the similar materials of the intact rock mass and the rock mass structure, and selecting a cementing agent; performing a small-scale 3D printing test at different material ratios and 3D printing parameters; determining the 3D printing similar material ratios and the 3D printing parameters; establishing a 3D digital model, planning printing paths, and determining pore diameters, number and combination form of the print heads; conveying the similar materials to the print heads; under the control of a 3D printing intelligent coupling control system, running each print head according to the planned and generated printing paths to complete printing; and finally, testing a printing effect of the model.
