Coupled thermo‐mechanical algorithm for fractured rock mass by the composite element method

2020 ◽  
Vol 121 (21) ◽  
pp. 4793-4810
Author(s):  
Luan‐Luan Xue ◽  
Jia Ni ◽  
Lin‐Wei Wang ◽  
Mi Zhou ◽  
Sheng‐Hong Chen ◽  
...  
Keyword(s):  
Rock Mass ◽  
Fractured Rock ◽  
Fractured Rock Mass ◽  
Composite Element ◽  
Composite Element Method ◽  
Element Method

Research on Seepage Field in Fractured Rock Mass of Underground Oil Storage Cave Using Distinct Element Method

2013 ◽  
Vol 353-356 ◽  
pp. 619-623
Author(s):  
Song Yu ◽  
Yun Peng Zhang ◽  
Wei Shen Zhu
Keyword(s):  
Rock Mass ◽  
Fractured Rock ◽  
Distinct Element ◽  
Water Pressure ◽  
Hydraulic Pressure ◽  
Fractured Rock Mass ◽  
Water Curtain ◽  
Oil Storage ◽  
Underground Caverns ◽  
Element Method

The distribution of hydraulic pressure in fractured rock mass surrounding caverns after excavation and technique of stochastic generation of joint network are investigated based on discrete element method. In order to seal the oil in underground caverns with water in the actual engineering, a water curtain with water pressure is installed, and the changes of hydraulic pressure are simulated with a series of curtain pressures. It is shown that some joints that have been drained out during excavation can not be saturated if the water curtain pressure is less than a certain value. Water curtain pressure with a certain value gives a strong safe guarantee of saving oil in the underground petroleum storage caverns.

A composite element solution of convection-conduction heat transfer in fractured rock mass

2021 ◽  
Vol 136 ◽  
pp. 104217
Author(s):  
Luan-Luan Xue ◽  
Lin-Wei Wang ◽  
Jia Ni ◽  
Ze-Jun Han ◽  
Sheng-Hong Chen ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Rock Mass ◽  
Fractured Rock ◽  
Element Solution ◽  
Fractured Rock Mass ◽  
Conduction Heat Transfer ◽  
Composite Element

Stability Analysis of Underground Caverns by Jointed Finite Element Method

2012 ◽  
Vol 238 ◽  
pp. 814-817 ◽  
Author(s):  
Ji Chang Wu ◽  
Yu Min Zhang ◽  
Hong Xia Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Rock Mass ◽  
Fractured Rock ◽  
Deformation Characteristic ◽  
Collapse Mechanism ◽  
Fractured Rock Mass ◽  
Underground Caverns ◽  
Water Collection ◽  
Element Method

The jointed finite element method (JFEM) is used to analyze the deformation and failure characteristic of fractured rock mass and anchor reinforcement effect for the water collection shaft of the main power house of Dagangshan Hydropower Station. The results show that the JFEM not only simulates the actual rock mass structure very well, but also gives the reasonable simulation results for the common unstable rock mass. The JFEM may accurately simulate the major deformation characteristic and collapse mechanism, which is another effective way to analyze the stability of fractured rock mass. The on-site monitoring results show that the anchor reinforcement is effective for the water collection shaft

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