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PIPE TO REPRESENT HOLE——NUMERICAL METHOD FOR SIMULATING SINGLE DRAINAGE HOLE IN ROCK-MASSES
Author(s): 
Pages: 346-349
Year: Issue:  3
Journal: CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING

Keyword:  渗流排水孔岩体数值方法;
Abstract: According to the theory of seepage flow, a new method for simulating the action of the drainage holes in rock-masses is given, which is called as ‘pipe to represent hole’. The drainage hole is simulated by conductive pipe as a type of the components with strong permeability in permeable medium. The equivalent permeability coefficient of the drainage hole is determined on the basis of the equivalence principle for water head and flow quantity, and it can show the relationship among the drainage property, hole space, and permeability of rock-masses. This method can simulate the drainage effect of holes in different conditions, which will provide a practical method for optimal design of the drainage system in rock-masses.
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