工地噪声实时监测仪器þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê建筑施工噪声标准：þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê为贯彻《中华人民共和国环境保*》和《中华人民共和国环境噪声污染防治条例》。控制城市环境噪声污染，特制定本标准。þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
1、适用范围þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê本标准适用于城市建筑施工期间施工场地产生的噪声þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
2、标准值þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
2.1 不同施工阶段作业噪声限值列于下表。þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê等效声级LAeq[dB(A)]þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
施工阶段 主要噪声源 噪声限值þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê昼间 夜间þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê土石方 推土机、挖掘机、装载机等 75 55þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
打桩 各种打桩机等 85 禁止施工þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê结构 混凝土搅拌机、振捣棒、电锯等 70 55þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
装修 吊车、升降机等 65 55þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
2.2 表中所列噪声值是指与敏感区域相应的建筑施工场地边界线处的限值。þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
2.3 如有几个施工阶段同时进行，以高噪声阶段的限值为准þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê噪声的衰减因素：þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê1.空气的吸收þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê2.地面的吸收þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê3.气温的影响þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê4.风速的影响þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê5.声屏障的衰减þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Êþ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê工地噪声监测仪技术参数þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
测量范围：30～130dB(A)þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
频率范围：20Hz-12.5kHzþ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
频率计权：A（计权）þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
时间计权：F（快）þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
输出接口： 4~20mA/RS232þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
灵 敏 度：电压41.5mV/dB; 电流0.133mA/dBþ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
最大误差：0.5dBþ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
供þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
电：220V市电或24V DC þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
尺寸大小：200mm×104mm×50mmþ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
外形材质：铝合金外壳，坚固防腐þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê
þ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Êþ,1P¥z[Bbbs.3c3t.comùwÖ¨I\Ê %20(2)_1.gif)
