陕北露天煤矿声环境影响预测与分析——以陕北四门沟露天煤矿为例

ESTIMATION AND ANALYSIS OF THE SOUND ENVIRONMENT OF OPENCAST COLLIERY AT NORTHERN SHAANXI——BASED ON THE EXAMPLE OF SIMENGOU OPENCAST MINE COAL

本文以陕北四门沟露天煤矿为例,在主要噪声源强以及厂界和周边敏感目标的噪声级现状监测的基础上,对煤矿开发后声环境影响预测与分析,结果表明:(1)煤矿工业场地厂界四周昼间和夜间环境噪声均达到了《工业企业厂界环境噪声排放标准》(GB12348-2008)2类标准限值要求。(2)采掘场噪声较大,液压挖掘机、前装机、推土机、自卸卡车等机械设备对周围敏感目标影响较小。(3)计算露天采区一次爆破振动和经常性爆破振动最大影响范围,对工业场地拟建建筑物和周围敏感目标基本没有影响。

Based on the exa mple of SIMENGOU opencast coal mine from northern part of Shaanxi,this paper aims to forecast and analyze the influence of sound environment after the construction of this colliery.Researches and estimations done in this study are conducted on the basis of main noise intensity and monitoring targets around colliery which are sensitive to noise level.The empirical results could be concluded as following：（1）the noise level around colliery can meet the maximum noise requirement（Class 2）from ＂Noise Emissions Standard for Factory Boundaries＂（GB12348-2008）;（2）unlike those mechanical equipment like hydraulic excavators,bulldozer and dump truck,which have less influence on the sensitive targets,quarry,on the other hand,has more significant affect on those estimated targets;（3）By calculating the maximum influence range of blasting vibration on both disposable and recurrent frequency at opencast area,the results indicate that main constructions which planned to be built at the colliery and sensitive targets around coal mine should not be affected by the blasting vibration sound.