工廠噪聲監(jiān)測(cè)布點(diǎn)方案

#5.12數(shù)控車床車間數(shù)據(jù)記錄及處理1.三區(qū)⑦號(hào)監(jiān)測(cè)點(diǎn)74.873.873.472.972.574.473.873.472.972.474.373.873.472.972.474.273.773.472.872.374.173.773.372.872.274.173.773.372.87274.173.773.272.8727473.773.272.871.87473.673.272.871.87473.673.272.771.77473.573.172.771.673.973.573.172.771.673.973.573.172.771.573.973.573.172.771.573.973.573.172.771.573.973.57372.771.473.973.47372.571.373.873.47372.571.173.873.47372.570.573.873.47372.570.5L=L+(L-L)2/60eq501090L=73.2+(74-71.7)2/60=73.29(dB)eq

2.三區(qū)⑧號(hào)監(jiān)測(cè)點(diǎn)80.578.978.478.177.380.278.978.37877.279.778.878.37877.279.578.878.377.977.179.578.878.377.97779.478.878.277.876.979.478.878.277.876.979.378.778.277.876.879.378.778.277.776.779.378.778.277.776.779.378.778.277.776.679.278.778.277.776.679.178.778.277.776.579.178.778.277.676.479.178.678.277.676.37978.678.177.676.37978.678.177.576.37978.478.177.476.17978.478.177.376.178.978.478.177.376.1LeqqL+50=78.3dB(L-LeqqL+50=78.3dB—1090—603.三區(qū)⑨號(hào)監(jiān)測(cè)點(diǎn)Leq沁82.978.477.977.576.980.478.477.977.576.879.778.477.977.476.879.378.377.977.476.879.278.377.877.476.879.178.377.877.376.87978.277.877.376.77978.177.877.376.778.878.177.877.276.678.778.177.877.276.678.778.177.877.276.678.678.177.877.276.678.678.177.777.276.578.67877.777.276.578.57877.777.276.578.57877.77776.478.57877.776.976.378.57877.776.976.278.477.977.776.975.678.477.977.676.975.2（L-L）'"C（78.7-76.6》+1090—--77.8+-77.9dB,+—io9^=77.8+—506060廠界噪聲數(shù)據(jù)記錄及處理廠界南側(cè)56.957.858.659.260.756.957.958.759.260.757.257.958.759.260.857.257.958.759.360.857.258.058.759.360.857.258.058.759.360.857.258.058.759.460.857.458.158.759.460.957.458.158.759.561.257.458.258.759.661.257.458.258.859.661.257.458.258.859.661.357.558.358.959.761.457.558.358.960.061.457.658.459.060.061.457.658.459.160.161.557.658.459.160.261.657.758.659.160.261.657.758.659.160.361.657.758.659.160.461.8L=L+(L-L)2/60eq501090L=58.8+(61.2-57.4)2/60=59.04(dB)eq

廠界東側(cè)（數(shù)控車床門口）61.061.962.563.163.561.061.962.563.163.561.061.962.563.163.561.161.962.563.263.661.262.062.663.263.661.262.162.663.263.661.262.162.663.363.661.262.162.663.363.761.362.262.763.363.761.362.362.763.363.761.462.362.763.463.761.462.362.863.463.761.562.362.863.463.761.562.362.863.463.861.562.462.963.463.861.562.462.963.463.861.662.462.963.563.861.762.563.063.563.961.762.563.063.563.961.862.563.063.563.9L=L+(L-L)2/60eq501090L=62.7+(63.7-61.3)2/60=62.80(dB)eq

廠界東側(cè)（機(jī)床車間門口）52.458.659.259.760.160.661.061.762.664.152.458.759.259.860.260.661.161.762.664.152.458.759.359.860.260.661.161.762.664.152.858.759.359.860.260.661.161.862.665.355.958.859.359.860.360.761.261.862.765.457.058.859.359.860.360.761.261.862.765.657.058.859.359.860.360.761.261.962.765.657.058.859.359.860.360.761.261.962.765.757.558.959.359.960.360.761.261.962.865.857.658.959.359.960.460.761.361.962.966.057.858.959.459.960.460.761.362.063.166.158.058.959.559.960.460.761.562.163.166.558.158.959.560.060.460.861.562.263.366.658.258.959.560.060.560.861.562.363.366.758.259.059.660.060.560.961.562.363.466.758.359.059.660.060.560.961.662.363.766.958.359.159.760.060.560.961.662.363.767.158.459.159.760.160.560.961.662.463.867.358.459.159.760.160.561.061.762.563.867.958.659.159.760.160.561.061.762.664.068.1=61.0dB(L-L》(64.1-58.6》=61.0dBLeq沁L+―ao+80—=60.5+ioo6060

設(shè)備噪聲數(shù)據(jù)記錄及處理設(shè)備為1號(hào)外圓磨床LeqqL50(LeqqL50(L-L》+——1090—60=78.6+(80.6-77.4》60=78.8dB90.579.878.978.577.890.279.778.878.577.690.179.678.878.577.689.579.678.878.577.689.279.678.778.477.688.679.578.778.477.687.579.578.678.477.685.379.578.678.377.580.679.578.678.377.580.679.478.678.277.480.579.378.678.277.480.579.378.678.277.280.579.278.678.276.980.379.278.678.276.780.279.178.678.276.680.278.978.678.176.580.178.978.677.976.580.178.978.577.876.580.178.978.577.876.579.878.978.577.876.3

78.680.279.478.576.276.279.979.278.476.286.379.979.278.476.286.279.878.978.476.285.679.878.978.476.185.579.878.978.475.685.379.778.678.375.685.279.678.678.275.585.279.678.678.275.585.279.678.678.275.484.579.678.678.175.384.379.678.676.575.284.279.678.676.575.284.279.578.576.575.282.279.578.576.574.580.679.578.576.574.580.679.578.576.474.280.579.578.576.372.580.479.578.576.370.680.279.478.576.270.5(L-L:2(85.2-75.3》L+——90--78.6+-80.2dB506060Leq沁86.279.879.578.778.485.679.879.578.778.385.379.879.578.778.385.279.879.578.678.284.679.879.578.678.280.679.879.478.678.280.579.879.478.678.280.579.879.478.678.280.579.879.278.677.780.279.678.978.677.679.879.678.978.677.679.879.678.978.577.579.879.678.978.577.579.879.678.978.575.679.879.678.878.575.579.879.678.878.575.479.879.578.878.574.979.879.578.878.474.879.879.578.778.474.679.879.578.778.474.5（L-L）（80.2-77.6》+—1090—-一78.9+=78.3dB+—io90—=78.9+506060Leq89.579.678.978.577.689.279.678.978.577.688.679.678.878.577.687.579.678.878.577.685.379.678.878.577.685.379.678.878.577.585.279.678.878.577.585.279.678.878.477.585.279.678.778.477.580.279.678.778.477.579.879.678.678.477.379.879.678.678.375.679.879.578.678.375.679.879.578.678.275.579.879.578.678.275.579.879.578.678.275.579.879.578.677.875.479.878.978.677.675.479.778.978.577.674.979.678.978.577.674.8(L-L(80.2-77.3》沁L+109-78.7+-78.8dB5060606.1降噪方案設(shè)計(jì)6.11廠內(nèi)噪聲現(xiàn)狀《工業(yè)企業(yè)噪聲衛(wèi)生標(biāo)準(zhǔn)（實(shí)行草案）》規(guī)定：對(duì)于新建、擴(kuò)建、改建的工業(yè)企業(yè)的生產(chǎn)車間和作業(yè)場(chǎng)所的工作地點(diǎn)噪聲級(jí)最大為85dB,對(duì)于現(xiàn)有企業(yè)經(jīng)過努力，暫時(shí)達(dá)不到標(biāo)準(zhǔn)的，其噪聲允許值可取90dB。根據(jù)現(xiàn)場(chǎng)監(jiān)測(cè)數(shù)據(jù)，機(jī)電系實(shí)訓(xùn)車間噪聲不超標(biāo)，但為了達(dá)到實(shí)訓(xùn)目的，鍛煉設(shè)計(jì)能力，將噪聲標(biāo)準(zhǔn)設(shè)置為環(huán)境噪聲標(biāo)準(zhǔn)一級(jí)標(biāo)準(zhǔn)（白天噪聲55dB）,并以此標(biāo)準(zhǔn)對(duì)工廠實(shí)施降噪。兩個(gè)車間整體尺寸均為61.9mX14.5mX5.5m，車間工作時(shí)，實(shí)測(cè)平均噪聲級(jí):L=10lg[1/10（107.788+107.329+107..981+107..941+107.820.+107.651+107.383+106.474+105.904+106P.28°]=76.00dB（A），由于車間墻壁均為堅(jiān)硬反射面，室內(nèi)房間平均吸聲系數(shù)較小，且聲源較分散，所以采用吸聲處理方式進(jìn)行降噪。6.12吸聲降噪設(shè)計(jì)吸聲處理前壁面吸聲系數(shù)列于序號(hào)4.降噪目標(biāo)采用NR70曲線，根據(jù)NR70曲線將各倍頻程標(biāo)準(zhǔn)量及降噪量列于序號(hào)2、3內(nèi)，根據(jù)公式AL=^2計(jì)算出Pai各倍頻程處理后應(yīng)有平均吸聲系數(shù)