The Seepage Simulation of Single Hole and Composite Gas Drainage Based on LB Method

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Chen, Yanhao^1 ; Zhong, Qiu^1 ; Gong, Zhenzhao^1

College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao, China^1

关键词: Computational model;    Drainage area;    Drainage methods;    Flow velocity vectors;    Gas pressures;    Power disasters;    Seepage flows;    Seepage problem;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/4/042103/pdf
DOI  :  10.1088/1755-1315/108/4/042103

来源: IOP

【 摘 要 】

Gas drainage is the most effective method to prevent and solve coal mine gas power disasters. It is very important to study the seepage flow law of gas in fissure coal gas. The LB method is a simplified computational model based on micro-scale, especially for the study of seepage problem. Based on fracture seepage mathematical model on the basis of single coal gas drainage, using the LB method during coal gas drainage of gas flow numerical simulation, this paper maps the single-hole drainage gas, symmetric slot and asymmetric slot, the different width of the slot combined drainage area gas flow under working condition of gas cloud of gas pressure, flow path diagram and flow velocity vector diagram, and analyses the influence on gas seepage field under various working conditions, and also discusses effective drainage method of the center hole slot on both sides, and preliminary exploration that is related to the combination of gas drainage has been carried on as well.