Study on permeating airflow law in broken ores/rocks in caved stopes

摘要：

A numerical analysis is developed to analyze the hydraulic permeability of the saturated porous medium in broken ores/rocks.The porosity and permeability of the rocks are assumed to vary exponentially with distance.The mathematical model is established based on Darcys law and the theory of heat and mass transfer.This model,solved by separately integrating two linearly independent integrals,can give the solutions of stream function and velocity distribution by applying numerical simulation.It is concluded that the rate and range of flow under real conditions are less than that under ideal conditions.The results of this analysis and model can be also used in tunnel safety and another underground engineering.

关键词： Hydraulic permeability Conductivity Broken ores/rocks Mine safety

作者: Tian Sijin Wang Yingmin

作者单位: College of Construction & Safety Eng.,Shanghai Institute of Technology,Shanghai 200233,China College of Civil & Resource Eng.,Northeastern University,Shenyang 110006,China

会议类型: 国际会议

会议名称: The 2007 International Conference on Mine Hazards Prevention and Control(2007矿山灾害预防与控制国际学术会议)

会议地点: 青岛

会议语种:英文

页码: 118-122

在线出版日期: 2007-10-17（万方平台首次上网日期，不代表论文的发表时间）