戈壁区露天矿无组织扬尘源定量预测研究
Quantitative prediction of unorganized particulate matter for open-pit coal mining in Gobi region
刘子晨1
作者信息
- 1. 中煤科工集团北京华宇工程有限公司,北京 100120
- 折叠
摘要
定量预测戈壁区露天矿开发过程中风蚀扰动和机械扰动产生的无组织扬尘的浓度和影响范围是露天矿大气环境影响评价的重点和难点.以红沙梁露天矿为研究对象,基于扬尘源颗粒物排放清单编制技术指南(试行)和ADMS-EIA软件,建立气象数据预处理—无组织源强核算—模型定量预测的评价策略,以等值线图可视化扬尘控制措施下TSP、PM10 和PM2.5 网格浓度.研究表明,露天矿开发无组织扬尘主要集中在扰动工作面1000 m范围内,相比定期洒水扬尘控制措施,使用化学覆盖剂对主导风向下风向500 m处TSP、PM10 和PM2.5 浓度贡献分别降低56%、56%和41%.露天矿无组织扬尘源定量化预测可为大气环境防护距离确定和污染控制措施可行性评估提供支撑.
Abstract
Quantitative prediction of the concentration and influence range for unorganized particulate matter generated by aerodynamic disturbances and mechanical disturbances during the development of open-pit coal mines in the Gobi area is the key point and difficulty on the atmospheric environmental impact assessment.Taking the Hongshaliang Open-pit Mine as the research object,based on the technical guideline for Compilation of Dust Source Particulate Emission Inventory(Trial)and ADMS-EIA software,an evaluation strategy of meteorological data preprocessing-unorganized source intensity accounting-model quantitative prediction was established.The grid concentrations of TSP,PM10 and PM2.5 under dust control measures were visualized by contour plot.Research shows that unorganized particulate matter from open-pit coal mine development mainly concentrates within 1000 m of the disturbed working face.Compared with regular watering dust control measures,the use of chemical covering agents can reduce the concentration contribution of TSP,PM10 and PM2.5 at 500 m downwind of the dominant wind 56%,56%,and 41%,respectively.Quantitative prediction of unorganized dust sources for open-pit mine in Gobi region can provide support for determining the atmospheric environment protection distance and assessing the feasibility of pollution control measures.
关键词
露天矿/无组织扬尘/戈壁风蚀/定量预测/环境影响评价Key words
open-pit mines/unorganized particulate matter/Gobi wind erosion/quantitative prediction/environmental impact assessment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据