超高压智能数控真三维加载模型试验系统的研制及应用

doi:10.13722/j.cnki.jrme.2015.1475

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Abstract With the world's increasing demand for mineral resources and energy，the mining activities of human being have entered deep underground. In order to reveal the nonlinear deformation properties and strength failure mechanism of ultra deep cavern under high ground stress，a 3D ultra high pressure loading model test system with intelligent control function was developed by using the numerical control and photoelectric conversion technology. The model test system is composed of a counter-force frame，an ultra high pressure loading system，an intelligent hydraulic control system，an automatic collection system of model displacement and a high definition multi probe peep system. The rated output of the model system is 63 MPa，the maximum load is 45 000 kN and the loading accuracy is 0.05 MPa. The true 3D non-uniform gradient loading at super high pressure is realized with the numerical control technology. The automatic monitoring of the model displacement is realized with the photoelectric conversion technology and the precision of displacement measurement is 0.001 mm. The failure state of the model cavern is observed through the multi probe system of high definition. 3D geomechanical model test of failure of ultra deep oil karst cave in Tahe Oilfield in Xinjiang was carried out by utilizing the model test system. The failure mode，the nonlinear deformation characteristics and the stress variation of the karst cave in the process of formation were effectively revealed. The results of the model test has verified the reliability of the model test system.

Key words： petroleum engineering petroleum exploitation ultra high pressure loading system intelligent hydraulic control system model displacement test system ultra deep buried oil reservoir cave collapse failure model test of karst cave

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	Articles by authors
	ZHANG Qiangyong1
	XIANG Wen2
	ZHANG Yue1
	WANG Chao1
	LIU Chuanchen1

Cite this article:

ZHANG Qiangyong1,XIANG Wen2,ZHANG Yue1, et al. Development and application of ultra high pressure 3D loading model test system with intelligent numerical control function[J]. , 2016, 35(8): 1628-1637.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.1475 OR http://www.rockmech.org/EN/Y2016/V35/I8/1628

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