摘要
采石场环境影响评价的关键在于生产过程中产生的大气污染TSP、PM10的影响,而TSP、PM10的影响又取决于其产生的源强的大小及扩散模式。以襄樊市襄阳城南岘山两处采石场为例,采用模拟实验、实测法对采石场大气污染物扩散模式、扩散参数及源强的确定进行分析研究。结果表明:在通常气象(平均风速)条件下,各类稳定度的TSP小时平均浓度在下风向距离800m以上均较低。基本上与实测值的TSP值相吻合。在D类稳定度情况下,距离污染源800～900mTSP最大小时平均浓度为0.13～0.11mg/hm3。
The TSP and PM_(10) produced in process of production are important data in the environment impact assessment of quarry.TSP(total suspended particulates) and PM_(10)(particulate matter less than 10μms) were influenced by spreading model and intense atmosphere contamination sources. Taking the quarry in Xiangfan as an example,the atmosphere contamination diffuse model, the diffuse parameter and determination of the intense atmosphere contamination sources of it were analyzed by simulation experiment and measurement on the spot. Under the common meteorological (average wind speed) condition, the average concentration of TSP per hour was relatively lower,more than 800 meters at the distance of lower wind direction,which was in accordance with the TSP ratio of the measurement. In case of steady D type,at 800～900 meter away from pollution sources,the maximum average concentration TSP per hour was 0.13～0.11 mg/hm^(3).
出处
《资源调查与环境》
2003年第4期287-294,共8页
Resources Survey & Environment
关键词
采石场
环境影响评价
大气污染
总悬浮颗粒物
TSP
模拟实验
实测法
quarry
environmental impact assessment
atmosphere pollution
total suspended particulates
simulation experiment
measurement on the spot
