HJ 640-2012
Technical specifications for environmental noise monitoring Routine monitoring for urban environmental noise
环境噪声监测技术规范 城市声环境常规监测
Catalogue
前言 → 1 适用范围 → 2 规范性引用文件 → 3 术语和定义 → 4 区域声环境监测 → 5 道路交通声环境监测 → 6 功能区声环境监测 → 7 监测点位调整 → 8 城市声环境监测报告 → 9 质量保证与质量控制 Foreword → 1 Scope → 2 Normative References → 3 Terms and Definitions → 4 Regional Environmental Noise Monitoring → 5 Road Traffic Environmental Noise Monitoring → 6 Functional Zone Environmental Noise Monitoring → 7 Monitoring Point Adjustment → 8 Urban Environmental Noise Monitoring Report → 9 Quality Assurance and Quality Control
Scope
This standard specifies the monitoring content, point setting, monitoring frequency, measurement time, evaluation methods, and quality assurance and quality control technical requirements for routine monitoring of urban acoustic environment. This standard applies to routine urban acoustic environment monitoring conducted by environmental protection departments for monitoring and evaluating the quality of urban acoustic environment. Acoustic environment monitoring in rural areas may refer to this standard.
本标准规定了城市声环境常规监测的监测内容、点位设置、监测频次、测量时间、评价方法及质量保证和质量控制等技术要求。本标准适用于环境保护部门为监测与评价城市声环境质量状况所开展的城市声环境常规监测。乡村地区声环境监测可参照执行。
Normative References
Keywords
Application Summary AI generated
Environmental protection officials use this standard to conduct routine monitoring of urban noise, covering regional, road traffic, and functional zone noise. They follow the specified point selection, frequency, and evaluation methods to systematically collect data for assessing urban acoustic quality. This standard ensures consistency and comparability of monitoring, providing a scientific basis for noise pollution control and urban planning.
环境保护部门的工作人员使用这个标准来定期监测城市噪声水平，包括区域噪声、道路交通噪声和功能区噪声。他们依据标准中的点位设置、监测频次和评价方法，系统收集数据以评估城市声环境质量。该标准确保了监测工作的规范性和可比性，为城市噪声污染治理和规划提供科学依据。
AI Summary AI generated
This standard (HJ 640-2012) specifies technical requirements for routine urban acoustic environment monitoring, covering three types: regional, road traffic, and functional zone monitoring. It details monitoring content, point selection, frequency, timing, evaluation methods, and quality assurance. Regional monitoring uses grid points with daytime annual and nighttime every five years; road traffic monitoring is conducted annually at road segments; functional zone monitoring is quarterly with 24-hour continuous measurement. The standard also addresses point adjustment, reporting, and quality control, serving environmental authorities to assess urban noise, with rural areas as reference.
本标准为HJ 640-2012，规定了城市声环境常规监测的技术要求，包括区域、道路交通和功能区三类监测的监测内容、点位设置、频次、时间、评价方法及质量保证。区域监测采用网格布点，每年昼间一次、夜间每五年一次；道路交通监测选在路段间，每年昼间一次；功能区监测每季度一次，连续24小时。标准还涉及监测点位调整、报告编制和质量控制，适用于环保部门评价城市噪声状况，乡村可参照执行。
Key Sentences extracted from text
本标准规定了城市声环境常规监测的监测内容、点位设置、监测频次、测量时间、评价方法及质量保证和质量控制等技术要求。
将整个城市建成区划分成多个等大的正方形网格（如1000m×1000m），对于未连成片的建成区，正方形网格可以不衔接。
每个监测点位测量10 min 的等效连续A 声级Leq（简称：等效声级），记录累积百分声级L10、L50、L90、Lmax、Lmin 和标准偏差（SD）。
道路交通噪声监测的等效声级采用路段长度加权算术平均法，按式（2）计算城市道路交通噪声平均值。
噪声测量仪器在每次测量前后应在现场用声校准器进行声校准，其前、后校准示值偏差不应大于0.5 dB，否则测量无效。
This standard specifies the monitoring content, point setting, monitoring frequency, measurement time, evaluation methods, and quality assurance and quality control technical requirements for routine monitoring of urban acoustic environment.
Divide the entire urban built-up area into multiple equal-sized square grids (e.g., 1000m×1000m); for non-contiguous built-up areas, the square grids may not be connected.
Each monitoring point measures the equivalent continuous A-weighted sound level Leq for 10 minutes, recording the cumulative percentile sound levels L10, L50, L90, Lmax, Lmin, and standard deviation (SD).
The equivalent sound level of road traffic noise monitoring adopts the road section length weighted arithmetic mean method, and the average value of urban road traffic noise is calculated according to formula (2).
The noise measurement instrument shall be acoustically calibrated on site using a sound calibrator before and after each measurement; the deviation between the pre- and post-calibration readings shall not exceed 0.5 dB, otherwise the measurement is invalid.