环境监测噪声实验报告.docx
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环境监测噪声实验报告.docx
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环境监测噪声实验报告
环境监测噪声实验报告
学院:
班级:
组长:
实验日期:
2012年4月25日
环境噪声监测
一、目的要求
(1)掌握环境噪声的监测方法;
(2)熟悉声级计的使用;
(3)掌握对非稳态的无规则噪声监测数据的处理方法;
二、仪器设备:
声级计
三、测量条件
(1)天气条件要求在无雨无雪的时间,声级计应保持传声器膜片清洁,风力在三级以上必须加风罩(以避免风噪声干扰),四级以上大风应停止测量。
(2)使用仪器是声级计。
(3)手持仪器测量,传声器要求距离地面1.2m。
四、测定步骤
(1)将学校(或某一地区)划分25×25m的网格,测量点选在每个网格的中心,若中心点的位置不宜测量,可移到旁边能够测量的位置。
(2)每组6人配置一台声级计,顺序到各网点测量,时间从8:
00—17:
00,每一网格至少测量四次,时间间隔尽可能相同。
(3)读数方式用慢档,每隔5秒读一个瞬时A声级,连续读取200个数据。
读数同时要判断和记录附近主要噪声来源(如交通噪声、施工噪声、工厂或车间噪声、锅炉噪声…)和天气条件。
三、测量条件
(1)天气条件要求在无雨无雪的时间,声级计应保持传声器膜片清洁,风力在三级以上必须加风罩(以避免风噪声干扰),四级以上大风应停止测量。
(2)使用仪器是声级计。
(3)手持仪器测量,传声器要求距离地面1.2m。
五、数据处理
环境噪声是随时间而起伏的无规律噪声,因此测量结果一般用统计值或等效声级来表示,本实验用等效声级表示。
(1)将各网点每一次的测量数据(200个)顺序排列找出L10、L50、L90,求出等效声级Leq,再将该网点一整天的各次Leq值求出算术平均值,作为该网点的环境噪声评价量。
Leq=10lg
=10lg[]
式中Li——第i次读取的A声级;
N——取样总数
测量数据如下:
①
②
③
④
⑤
⑥
⑦
⑧
⑨
⑩
5.902345
5.518365
7.83853
5.951706
5.706514
7.409532
5.79275
4.527229
6.303254
3.811655
①
②
③
④
⑤
⑥
⑦
⑧
⑨
⑩
46.1
40.6
64.1
56.6
61.4
60.3
58.5
34.5
58.5
38.4
50.1
44.8
58.7
65.4
50
67.9
52.5
34.5
52.4
37.6
60.3
49.6
50.9
71.3
50.5
60.7
50.5
36.6
53
36.7
50.6
50.1
77.9
62
57.3
75.1
53
34.2
51.1
39.1
56
42.1
76.9
57.2
51.3
77.2
52.7
34.4
46.8
37.9
53.5
39.3
63.8
58.4
55.3
63.9
49.9
33.6
59.5
37.6
51.2
39.1
69.9
59.2
47
65.7
54.6
34.4
53.2
37.2
55.5
4.1
58.2
60.1
50.8
58.3
55.6
34.5
50.8
36.5
51.5
38.7
74.9
58
48.5
64.4
57.7
34.7
64.3
36.6
51.9
43.2
57.8
57.5
55
64.8
63.6
33.1
58.7
37.4
59.6
37
70.2
57.2
56.2
64.7
50.9
35.2
50.1
37.6
68.8
57.7
63.2
55.1
50
62.4
58.6
34.3
53.3
38.2
52.3
44.7
69.1
60.2
52.3
62.6
49.1
37.8
52
37.7
51.1
47.1
70.2
57.3
58.8
63
51
35.2
49.1
37.1
51
38.2
74.2
58.4
43.5
68.2
54.2
50.2
50.8
41.2
54
47.4
73.7
58.8
44.7
68.8
50.5
39.4
47.5
41.3
59.5
38
63
59
48.6
68.6
50.3
35.7
49.6
40.6
50.6
46
78.3
60.4
44.9
64.6
48.3
34.3
55.6
50.2
54.7
47.9
75.8
52.2
49.2
61.9
45
34.5
53.4
48.4
53.1
60.4
69.4
61.9
44.3
60.1
43
42.8
59.2
39.1
50.6
59.6
61.5
55.1
49.5
60
47.2
33.6
51.2
37.1
46.6
42.4
68.6
55.7
47.8
57.7
47.9
38.8
43.3
36.4
50
55.7
67.7
63
60.6
51.7
43.1
39.2
47.1
40.2
56.3
45.9
71.1
59.3
51
60.9
48.6
39.3
53.6
38
51.9
60
74.8
52.5
68.1
54
49.2
35.8
54.2
43
55.6
55
76.6
55.1
56.1
56.5
47.5
34.8
57.6
36.6
56.4
53.9
69.6
60.2
53.9
57.4
49.3
37.4
45.9
36.1
54.8
56.2
72.4
55.6
52.1
59.7
48.2
33.5
54.1
35.6
55.2
47.8
62.8
57.6
51.9
60.8
55.3
33.8
49.2
36.2
55.8
49.3
65.4
62.4
56.5
68.6
46.2
37.4
60.5
37.9
68.7
54.8
77.4
55.8
50.4
62
51.8
39
55.5
38.7
57.4
44.2
68.9
57.1
49.6
55.6
53.9
35.7
55
34.7
54.4
55.3
70.8
55.3
46.2
64.5
50
43.3
57
34.9
57.8
55.7
60
53.8
48.6
56.5
58.7
40.1
51.9
36.5
54.7
59.8
68.8
59.9
58.6
56.5
51.1
39.5
53.1
39.5
55
55.5
72.3
60.3
53.5
57.6
45.6
45.9
57.6
37.1
54.2
45
74.5
54.5
49.3
55.9
53.1
54.4
54.8
34.6
65.4
52
67.5
61.5
70.5
59.3
52.4
44.3
55.3
35.9
53
49.4
73.2
55.5
51.5
70.2
45.5
43.7
55.2
36.5
67.4
60.1
72.9
53.2
67.1
61.7
50
45.3
55.3
39.5
51.8
52.9
78.1
57.4
53.6
57.6
49.5
45.2
51.5
37.1
56.4
57.4
66.6
56.8
51.5
66.4
51.9
48.6
55.7
34.6
63.8
43.9
65.1
55.9
50
67.4
53.5
37.3
57.6
34.7
52.5
58.7
69.5
57.7
47.2
68
50.7
43.9
53.5
34.7
64
60.3
59.3
53.5
56.9
77
49.8
41.9
54.4
35.5
54.4
55
72.2
51.5
46.3
62.1
53.7
43
50.7
39
55.3
54.6
66
63.5
41
56.7
51.8
53.3
54.1
34.1
58.4
58.3
71.4
57.5
44.4
55.1
50.5
39.7
55.9
38.5
57.5
48.4
71.7
59.5
42.5
61.7
53.5
49.5
48.4
36.2
60.7
43
69.6
55
43.9
69.2
56.8
35.5
45.2
37.8
65.1
54.8
66.4
55.2
46.3
65.8
56.1
47.5
45.1
36
55.8
36.1
71.1
56.7
55.3
64
52.3
52.9
56.6
35.6
58.4
40.8
65.5
54.7
45.6
66.9
47.3
53
52.1
37
50
40
68.6
60.5
47
58.2
50.1
43.8
44.6
34.4
49.9
42.4
69.3
58.2
48.3
53
51
59.7
46.5
35.2
52.9
44.2
73.1
59.2
47.7
60.1
51.3
47.8
53.3
34.5
47.3
52.7
65.7
59.3
44.1
69.1
57
37.3
53.8
35.2
51.1
37.9
59.4
61.7
42
67.4
50.3
35.2
58.1
35
70.9
52.3
63.1
62.7
43.1
67.9
49.9
35.1
51.2
36
54.6
42.3
59.4
63.4
48.8
63
47
35.9
54.9
37.7
55.3
54
58.8
65.6
47.3
63.3
50.5
37.2
53
37.3
54.9
53
70.2
64.8
45
62
51
34.1
54
35
58.3
47.2
59.6
64.3
47.1
62.1
52.6
36
55.1
35.2
53.6
49.3
62.2
66.3
44.3
58.8
56.6
35.4
54.9
34.3
53.4
43
72.1
60.3
45.8
58.1
46.6
38
61.1
35.1
54.2
37
69.5
60.6
46.7
72.7
54
37.5
60
37.4
49.7
50
59.5
59.6
45.1
80.6
52.2
46.6
44.4
36.2
53.1
54.3
60.1
57.2
66.7
68.6
52.3
41.5
49.6
35.1
52.8
53.1
55
62.2
43.8
73.4
52.2
49.9
58.5
36
66.5
39.2
56.3
61.9
58.4
76.2
52.3
51.8
57.6
42.1
66.4
55.1
72.7
59.6
58.3
74.2
48.3
48.5
63.4
34.9
60.7
46.9
61.9
55.6
56.1
66.4
52.5
42.2
59.7
35.6
56.2
51.9
59.5
58
50.6
66.7
54.7
38.5
50
35.6
49.4
40.7
58.1
56.5
60
65.6
56.7
40.7
55.1
34.9
56.6
47
63.1
56.1
62.6
63.2
57.9
54.7
61.1
35.9
48.8
51.7
71.1
52.7
43.6
62.1
57.6
61.3
60.1
36.7
53.1
51.3
55.7
57.6
46.3
66.7
49.8
36.6
50.4
35
48.9
46.2
67.3
57.8
48.3
63.6
51
35.4
47.6
36.1
54.3
50.2
70.6
57.9
46.5
62.8
49.9
37.7
50.6
39.3
47
56.3
76.6
56.5
64.9
68.6
57.5
39.3
57
37.4
48.1
56.2
67.3
68.5
58.2
65.5
57.9
43.3
56.6
36.2
53.4
39.6
62.4
53.3
45.4
57.8
57.8
39.3
59.3
35.1
49.3
54.6
62.3
54.8
44.3
63.2
55.5
41.4
61.6
36
47.3
53.4
61.2
58.5
52.5
58
51.5
35.9
54.1
42.1
54.2
53.1
72
60.7
45.3
59.4
50.9
40.9
54.7
34.9
54.8
47.1
67.7
56.8
51.1
65.6
49.6
35.4
56.4
35.6
50.3
54.3
79.7
58
47.4
59.7
47.5
35
60.2
39.4
57.7
47.4
72.4
55.1
62
58.4
54.1
35.9
64.5
37.2
54.6
57.1
72.8
62.4
62.4
68
46.4
42.1
60.2
37.1
60.2
48.6
75.1
59.1
52.8
60.2
50.4
36
69
35.5
53.9
51.3
61.1
54.3
55.4
57.6
53.4
37
50.1
36.6
55.2
42.6
65.5
55.1
55.7
59.1
51.9
35.1
53.5
35
50.4
56.2
64.5
54.9
49.1
62.3
58.2
51.2
56.5
36.1
49.4
49.6
54.9
57.5
47.6
63.2
53.9
37.7
59.1
36.7
46.7
54.1
69.1
59.4
51.4
63
51.5
34.3
54.1
35.5
48.6
59.3
64.4
60.9
45.5
68.2
52
34.2
58.9
36
50.1
48.1
70.3
65.1
43.7
67.3
50.9
35.3
53.7
35.5
56.5
51.1
71.1
57.7
51.8
74.5
48
35.9
59.5
35.3
58.2
42.2
74.5
55.8
63.1
72.9
51.1
34.3
57.7
36.2
49.5
52.3
69.2
52.9
54.6
73.2
46.9
38.6
48.2
35.5
51.8
48.8
56.9
53.2
47.1
70.3
49
38
52.7
35.5
54
48.5
58.6
55.2
46.7
68.3
49.5
37.7
53.8
38.8
52.5
39.3
59.6
55.3
42.4
68.4
48.7
34.3
40.1
34.9
61.1
49.3
74.8
54.3
44.2
67.1
51.1
35.8
55.8
39.6
58.7
41.1
67.1
51.9
48.3
59.2
48.5
34.2
58.2
36.1
49.5
53
65.4
55.5
52.7
71.8
48.6
34
52.9
36.3
51.8
49.6
64.4
51
68.6
71.6
51.5
36.1
51.1
35.9
51.9
49.5
67.9
52.5
51.5
72.9
50.5
39.1
56.5
36.2
68.6
47.7
69.4
59.6
52.5
74
47.7
34.5
49.7
36.4
61.8
49.1
59.1
52.9
48.4
66.5
49.6
41.6
51.6
34.7
53.1
51.2
61.1
55.2
51.6
72.8
46.9
40.1
57
35.1
51.2
48.2
72.4
55.3
46.9
69
47.8
34.4
56
35.8
46.5
49.6
67.6
53.5
47.9
61.3
47.6
35.4
55.9
35.4
53.8
44.1
68.8
56.7
45
60.6
51.5
35.5
52.2
34.7
48.8
44.3
75.4
57
50.7
65.7
52
34.6
49.8
35.8
57.3
51.8
68.9
53.2
63.1
61.7
48.9
34.1
51.7
35.6
48.9
40.5
65.9
49.7
49.1
68.3
51.6
34.2
47.4
35.3
54.5
52.5
69.3
53.7
50.8
64.9
50.5
45
48.8
34.3
57.3
48.9
67.7
51.9
44.4
69.7
59.5
48.4
43.3
34.1
68.3
38.9
70
57.1
53.1
77.8
53.3
42.1
46.8
34.7
61.3
52.6
76.9
57.3
49.9
76.2
52.4
34.9
51.6
36.4
60.5
51.6
73.9
56.2
55.3
75.7
58.5
43.7
47.8
34.4
57
53.4
72.4
56.5
58.9
61.3
55.2
33.7
50.3
36.7
65.7
38.2
68.1
59.1
55
64.8
55.3
39.6
52.3
35.2
62.4
53.9
69.1
59.3
44.4
57.5
54.1
4.8
51.6
34.3
53.5
55.4
66.1
61.2
49.5
61
53
41.8
54.6
34.3
49.8
54.1
76.8
56.5
62.2
69.3
54.6
35.8
49.4
34
53.2
57.4
78.1
55.3
51
67.4
54.8
33.3
57.6
33.5
54.6
48.1
76
56.4
52.7
58.2
51
42.1
49.7
34.6
50.2
46.6
78
57
45.2
56
49.4
45.2
47.3
34.1
48.6
49.4
81.7
55.8
44.2
66.7
53.8
36.5
53.9
33.4
53.3
58.1
71.7
57.6
45.3
55.2
52.2
49.1
48.7
36.4
54.3
43.7
71.9
55.5
49.8
60.5
41.3
38.1
49.5
35.9
51.5
52.9
68.7
54.1
46.5
57.1
55.9
40.4
49.4
34.9
55.6
48.2
77.9
59.7
48.9
62.6
52.9
52.1
49.8
37.1
52.2
38.1
81
59.4
48.1
58.3
50.2
33
48.6
37.6
53.9
47.8
64.2
62.2
50.9
59
52.2
33.1
54
35.2
62.2
56.8
71.7
58.3
44.2
69.3
48.1
33.3
57.4
34.8
53.2
44.8
56.2
56.9
48.8
63.4
49.2
33.7
49.1
35.8
57.2
45.1
74
54.1
52.1
57.1
49.6
36
48.6
34
51.7
50.1
61.2
56.4
57.2
59.2
54.6
35.7
50.2
35.5
48.8
52.9
82.5
54.1
59.7
61
49.2
43.7
47
34.8
48
50.5
73.2
61.3
48.2
57.5
51.2
33.8
49.5
37.6
49.6
47.8
75.5
62.6
56.1
58.4
52.8
34.5
48.1
36.2
48.8
42.9
71.7
58.9
47.9
59.8
64.5
33.6
55.7
36
51.6
52.8
77.3
54.3
52.3
62.1
64.1
33.6
48.8
34.2
56.9
39.1
77.1
56.9
51.5
63.8
58.3
39.2
51.5
35.5
49.7
44.9
69.4
61.6
52.7
69.2
54.6
34.1
50.8
35.8
65.4
50.3
72.4
60.9
46.1
68.4
56.6
33.6
53
38.4
52.8
51.4
70.8
56.7
56.1
70.5
68.2
33.6
56.7
43.4
55.6
46.6
79.1
58.2
48.5
53.5
65.5
34.7
58.5
35.3
50
66.5
62.1
56.2
49.1
59.6
56.5
34.6
52.9
43.5
54
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