Migration law of respirable dust on a super-long fully mechanized double-shearer working face  

作　　者：Jia Min Fu Yingpeng Yuan Yong Wei Hongmin Sun Song Li Jie Jia Min;Fu Yingpeng;Yuan Yong;Wei Hongmin;Sun Song;Li Jie(School of Mines,China University of Mining and Technology;Jining No.2 Coal Mine,Yankuang Group)

机构地区：[1]School of Mines,China University of Mining and Technology [2]Jining No.2 Coal Mine,Yankuang Group

出　　处：《International Journal of Mining Science and Technology》2016年第6期1109-1115,共7页矿业科学技术学报（英文版）

基　　金：the National Natural Science Foundation of China (No.51404249);the Basic Research Program of Jiangsu Province (No.BK20140201);the Priority Academic Program Development of Jiangsu Higher Education Institutions for financial support provided during this research

摘　　要：In order to understand the migration law of respirable dust and gain reasonable design parameters for dust control on a super-long double-shearer fully mechanized working face, this paper describes research carried out using a numerical simulation package(Fluent) based on gas-solid coupling dispersed multiphase flow model and field measurement to research different technology modes, dust distribution law at different intervals where shearers work in opposite directions on the lower 9303 face, No. 2 Jining Mine,Yankuang Coal Mining Co. Results show that the concentration of dust 3–6 m away from the shearers working in the same directions was large, while the impact area of respirable dust near the shearer increased significantly to 5–6 m with the distance between two shearers working in opposite directions.The concentration of dust on a double-shearer face was considerably higher than that of a face with one shear under the combined effect of wind speed on the face and disturbed wind around the shearer, while the dust concentration near the shearer on the return side was considerably higher than that on the inlet side. The concentration of dust on a double-shearer face along the airflow declined slowly so that dust was hard to control. Simulation results confirmed the results of field measurement, which could provide reference for dust prevention design.In order to understand the migration law of respirable dust and gain reasonable design parameters for dust control on a super-long double-shearer fully mechanized working face, this paper describes research carried out using a numerical simulation package （Fluent） based on gas-solid coupling dispersed multiphase flow model and field measurement to research different technology modes, dust distribution law at different intervals where shearers work in opposite directions on the lower 9303 face, No. 2 Jining Mine, Yankuang Coal Mining Co. Results show that the concentration of dust 3-6 m away from the shearers working in the same directions was large, while the impact area of respirable dust near the shearer increased significantly to 5-6 m with the distance between two shearers working in opposite directions. The concentration of dust on a double-shearer face was considerably higher than that of a face with one shear under the combined effect of wind speed on the face and disturbed wind around the shearer, while the dust concentration near the shearer on the return side was considerably higher than that on the inlet side. The concentration of dust on a double-shearer face along the airflow declined slowly so that dust was hard to control. Simulation results confirmed the results of field measurement, which could provide reference for dust prevention design.

关 键 词：Super-long working face Double-shearer Respirable dust Migration law Numerical simulation 

分 类 号：TD421.6[矿业工程—矿山机电] TD714.4