What is the "environment -friendly" construction?Look at the construction site "net" quietly

The construction site is built near the residential building, and the residents of the Gulou District of Nanjing can still feel the "window of the window". What kind of environmental password is this?

In recent years, as the double "heart" area of ​​Nanjing's central urban area and the core area of ​​the provincial capital, there are many construction operations in Gulou District, the environment is susceptible to pollution, and the mute dust control has become a must -have. Since 2019, the district has been piloting the special action of "mute dust control" for three years. What is the effect? On September 8, the reporter came to several construction sites for field visits.

Block the "transformation" sound insulation wall, press the "mute keys" at the construction site

The project of the NO.2019G61 plot project of the Gulou District is only 20 meters away from the residential building. Chen Changqing, the person in charge of the General Contracting Company of the China Construction Eighth Bureau, introduced that there are many complaints at the beginning of construction, but now they are rarely received complaints from residents. The realization of the realization is mainly based on a "magic" wall.

According to the construction noise decibel standard, the construction noise during the day should be less than 75 decibels, and the noise of the night construction should be less than 55 decibels. In order to suppress the noise disturbing the people, the construction party set up a double -layer soundtrack fence of 6 meters high on one side of the residential area. On one side of the sound insulation wall is iron, a calcium silicate plate on one side, and the sound insulation cotton coil is added in the middle. 25 cm not only effectively prevented the spread of noise, but also reduced the impact of problems such as dust and light pollution on the north side.

In addition to physical noise reduction, the construction site has also been planned in the schedule of construction. "Construction operations with large noise such as pile foundation piles and earthwork mining, we can arrange as much as possible to during the day, and by optimizing the construction of construction construction operations, the impact of construction noise on the construction site on residents." Implementation, the construction site hired a third -party noise monitoring unit to regularly monitor the construction site. In addition, 5 noise detectors were purchased. Once the construction was adjusted immediately, the noise would minimize the noise.

The reporter saw through the noise detector at the scene that the construction noise was about 65 decibels at about 10 am that day.

Wet operations are reduced, and the construction site is also "detail control"

At 11 am on the same day, when the reporter came to the construction site at the Nanjing Metro Line 9 Guanziqiao Station at the intersection of Jiangxi Northeast Road and Qingliangmen Street, the reporter was busy at the construction site. As the 11th station of Nanjing Metro Line 9, this key project is also the "sharp student" in the special operation of the "silent dust control" in Gulou District.

Large -scale equipment "bombarded", several excavators kept swinging their arms, and the crushed pavement concrete blocks quickly installed the car and transported away; the workers were busy installing the equipment, pipeline probes, etc. Preparations ... Several fog guns and spraying systems also began to work in all aspects of wet operations, starting a new day of "dust control" work without leaving dust.

"The details determine whether the dust is in place." Zhang Yuanyu, the on -site manager of the China Railway Twelfth Bureau, said that due to construction needs, the earth can be temporarily stacked in the venue. In order to effectively suppress the dust, the construction site requires soil to cover. As a "dust control detail control", the choice of green nets covered by nude soil is a dense mesh with six needles and above. "Not only that, we are also strictly managed by the transportation of the slag cars." Zhang Yuanyu said that before leaving the construction site, the slag cars were in addition to doing a good job in dust, covering, cleaning, and cleaning. Clean completely. At the same time, the construction site will arrange a person to sprinkle and clean the roads on the construction site daily to keep the road moist.

In the management of night construction, Jiangdong Street also has its own "detail arrangement".

"In order to shorten the time to disturb the people at night, the street coordinates the two construction sites next to the residential area to arrange at night construction during the same time." Ma training, deputy director of Jiangdong Street, said, "Because the two construction sites are close, they are mute at mute In the dust control work, the atmosphere of learning is formed with each other. "

Green at the bottom, innovate the "environment -friendly" construction

Following the north of Jiangxi Road, the demolition site of Huimin Avenue's comprehensive renovation project on Gulou District is being finalized at the dismantling site of the viaduct. Last month, the disassembly of a bridge was "quietly".

The Huimin Avenue viaduct has served the citizens of Nanjing for nearly 20 years, and it has been demolished from mid -July to the end of August. "Compared with the previous way of blasting, the demolition project adopts the construction method of the" module car + static cutting ', and the segmented scores are constructed. "Li Bin, the captain of the Environmental Supervision Brigade of the Gulou Ecological Environment Bureau The "environmental protection" construction method greatly reduces construction noise and helps achieve the "environment -friendly" construction.

"At present, there are more than 160 projects under construction in Gulou District. In order to comprehensively promote the working mechanism of joint defense and control, the Gulou District has established a large pattern of environmental protection." Li Bin said that since this year, the Gulou District has resolutely held the quality of the ecological environment. Better, not bad "bottom line, in the face of unfavorable factors such as extreme high temperature and less precipitation, adhere to the problem orientation, formulated the" Dust Pollution Prevention and "Silent Dust Control" work plan in Gulou District in 2022, " "Special action.

As of the beginning of September, the atmospheric environment governance of Gulou District continued to improve. Among them, the monitoring data of the State Control Station of the Carvass Guo Guo remained at the forefront of Nanjing, and the excellent ratio rate ranked first in Nanjing. The acceptance of various environmental petitions in Gulou District decreased by 57.2%year -on -year, of which construction noise complaints decreased by 57.4%year -on -year in 2021.

Xinhua Daily · Jiaojiao Reporter Wishing Wu Qiongwu Wu Qiong

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