Numerical simulation of hydrodynamic characteristics during the diversion closure in a horizontal tunnel  

作　　者：Wang Yu Du Wentang Xu Bohui Zhang Haiyang Yang Cuina 

机构地区：[1]Key Laboratory of Resource Survey and Research of Hebei Province, Hebei University of Engineering [2]School of Resource and Safety Engineering, China University of Mining & Technology [3]Department of Civil Engineering, Xinxiang University

出　　处：《International Journal of Mining Science and Technology》2013年第3期363-367,共5页矿业科学技术学报（英文版）

基　　金：Financial support for this work, provided by the National Natural Science Foundation of China (Nos. 41072031, 40172119);the Natural Science Foundation of Hebei Province of China(No. D2012402008)

摘　　要：Based on water inrush accident of 1841 working face of Desheng Coal Mine in Wu'an, Hebei province, China, an evaluation model of hydrodynamic characteristics of the project is set up and simulated using Matlab. It is assumed that the pipe flow would transform into seepage flow when the aggregates are plugged into the water inrush channel and the seepage flow would disappear along with grouting process. The simulation results show that the flow velocity will increase with an increase in height of aggregates accumulation body during the aggregates filling process; the maximum seepage velocity occurs on the top of plugging zone; and the water flow decreases with increasing plugging height of water inrush channel. Finally, the field construction results show that the water inrush channel can be plugged effectively by the compacted body prepared with aggregate and cement slurry.Based on water inrush accident of 1841 working face of Desheng Coal Mine in Wu’an, Hebei province, China, an evaluation model of hydrodynamic characteristics of the project is set up and simulated using Matlab. It is assumed that the pipe flow would transform into seepage flow when the aggregates are plugged into the water inrush channel and the seepage flow would disappear along with grouting process. The simulation results show that the flow velocity will increase with an increase in height of aggregates accumulation body during the aggregates filling process; the maximum seepage velocity occurs on the top of plugging zone; and the water flow decreases with increasing plugging height of water inrush channel. Finally, the field construction results show that the water inrush channel can be plugged effectively by the compacted body prepared with aggregate and cement slurry.

关 键 词：Hydrodynamic characteristics Numerical simulation Boundary condition Horizontal tunnel Diversion closure 

分 类 号：TD744[矿业工程—矿井通风与安全]