Statistical geometrical parameters of the discontinuities
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
OGPCONF05_137
تاریخ نمایه سازی: 18 مرداد 1398
Abstract:
Connectivity is a comprehensive parameter that includes the influence of length, orientation and density of the discontinuities. The main objectives of this paper are to define connectivity based on the statistical geometrical parameters of a network of random discontinuities and to quantify the hydraulic properties of the network using connectivity.An analytical method is first proposed to evaluate connectivity through the density of degree of freedom (DDOF). The analytically estimated DDOF is verified using numerical analysis. DDOF increases with the increases in the mean length, relative orientation and density of the random discontinuity network. Connectivity becomes better and the permeability becomes larger with increasing DDOF. The representative element volume (REV) of a random discontinuity network can be estimated based on connectivity. The results indicate that DDOF is a good indicator to quantify the connectivity of a random discontinuity network and the relationship between connectivity and permeability.
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Authors
seyed ali akbar Hosseini
Department of Petroleum and Mining Engineering, Tehran South Branch, Islamic Azad University, Tehran, Iran
Ghodratollah Mohammadi
Department of Petroleum and Mining Engineering, Tehran South Branch, Islamic Azad University, Tehran, Iran