唐山市典型道路积尘负荷分布特征研究

Research on distribution characteristics of silt loading of typical roads in Tangshan

为研究唐山市典型道路积尘负荷分布特征,于2019年1、4、7月基于样方真空吸尘法采集样品,通过筛分称重获得道路积尘负荷,并探讨其时空分布特征。结果表明:(1)不同类型道路积尘负荷排序为支路((0.70±0.85)g/m^(2))>环线((0.50±0.47)g/m^(2))>次干道((0.30±0.25)g/m^(2))>主干道((0.29±0.30)g/m^(2))>快速路((0.16±0.12)g/m^(2)),可能是受到车流量、车速、平均车重、道路清扫措施和道路周边环境等因素的影响。(2)3个季节道路积尘负荷排序为夏季((0.51±0.64)g/m^(2))>春季((0.42±0.46)g/m^(2))>冬季((0.35±0.38)g/m^(2)),这可能是受到气象和人为因素的共同影响。(3)道路积尘负荷的空间分布表现古冶区((0.52±0.56)g/m^(2))>玉田县((0.50±0.57)g/m^(2))>市区((0.27±0.35)g/m^(2))。(4)不同速度车道、不同类型道路积尘负荷都表现为慢车道>快车道,且快、慢车道积尘负荷呈显著线性关系(P=0,r=0.52)。

In order to study the distribution characteristics of silt loading of typical roads,road dust samples in Tangshan were collected basing on the sample vacuum method in January,April and July,2019.The values of silt loading were obtained by screening and weighing,and then the temporal and spatial distribution characteristics were analyzed.The results showed:(1)the order of silt loading of different road types was branch road((0.70±0.85)g/m^(2))>outer ring((0.50±0.47)g/m^(2))>minor arterial((0.30±0.25)g/m^(2))>major arterial((0.29±0.30)g/m^(2))>express way((0.16±0.12)g/m^(2)),which could be more susceptible to the traffic volume,vehicle speed,average vehicle weight,the measures of road cleaning and surrounding environment.(2)The seasonal distribution of silt loading in Tangshan was summer((0.51±0.64)g/m^(2))>spring((0.42±0.46)g/m^(2))>winter((0.35±0.38)g/m^(2)),which could be more vulnerable to meteorological factors and anthropogenic factors.(3)The spatial distribution of silt loading was Guye((0.52±0.56)g/m^(2))>Yutian((0.50±0.57)g/m^(2))>urban area((0.27±0.35)g/m^(2)).(4)The silt loading of different speed lanes and different road types was slow lane>fast lane,and the silt loading of fast and slow lanes had a significant linear relationship(P=0,r=0.52).