Take a shower before getting in and out of the car, cover all the mound materials, and green the non-working area ... The first phase of Metro Line 2 is the first subway line in our city.

In order to let citizens travel by subway as soon as possible, 23 subway stations are under construction. How to achieve green construction while ensuring the progress of the project?

Yesterday, a demonstration meeting was held to summarize the experience of the green environmental protection model site of the first phase project of Taiyuan Rail Transit Line 2. Relevant persons in charge of subway construction units gathered at Xijianhe subway station to experience the good practice of dust suppression, energy saving and emission reduction in the first subway "model" site in our city.

Plant green and spray dust.

As we all know, large-scale earthwork excavation is inevitable in the early stage of subway construction. If these earthwork are not covered when piled up, it will inevitably cause secondary dust pollution in windy days.

At this point, the practice of Xijianhe subway station has been praised by observers.

The northwest corner of the construction site is a non-construction area with an area of 1.600 square meters, which has been completely afforested and has become an "oasis" in the construction site. On the flat lawn, a row of nozzles are installed, which can spray water on the lawn regularly.

In the southwest corner of the construction site, a material storage area is specially enclosed, in which 30,000 cubic meters of engineering earthwork are piled up, all of which have been covered with at least three layers of dense mesh, and sprinklers are installed at the top of the earthwork.

In order to avoid the secondary pollution caused by rainy and windy conditions, the project department has reshaped the earthwork and covered it completely, and there are also nozzles on it, which can spray dust when it is windy.

In addition, all the building materials here, such as steel bars and concrete, are neatly placed in different areas and "wrapped" with filters, which seems to "wear" an environmentally friendly coat and looks neat and orderly.

The water cycle turns waste into treasure.

At the construction site, yellow sweepers, sprinklers and dust-removing fog guns shuttle through the construction site, constantly cleaning and cleaning the hardened road surface.

There is an automatic spraying platform at the north entrance and exit of the construction site, which will touch the infrared sensor when the vehicle enters and exits. More than ten high-pressure nozzles can instantly clean the stains on the car body and the silt on the tires to prevent the vehicles from getting muddy on the road.

It is reported that these cleaning cars are pollution-free battery cars, thus reducing automobile exhaust emissions.

In addition, nozzles are installed on the enclosure of the whole construction area, and there is basically one nozzle every 1 m.

According to the person in charge of the construction site, the enclosure of this construction site has a total length of 1.996 meters, and 2,000 nozzles have been installed, realizing the spraying without dead angle.

After all the nozzles are opened, it can not only clean the enclosure, but also prevent the dust from floating outside.

The water consumption for cleaning and spraying on the construction site is about 5 tons per day, and all the water is circulating water. In the construction site, there is a sedimentation tank, where the underground precipitation and engineering water of the subway project are collected. All the water is used for field spraying after multi-stage precipitation, which realizes the reuse of water resources.

The sprayed water will flow into another sedimentation tank, re-settle and finally be discharged into the municipal sewage pipe network.

Chang Weiguo, Director of Quality and Safety Department of Taiyuan Metro Development Co., Ltd. said that the purpose of holding this observation meeting is to let all construction sites of Metro Line 2 learn from the good practices of Xijianhe construction site, and realize the "six hundred percent" environmental protection management requirements of site enclosure, material stacking and covering, wet construction, road hardening, vehicle cleaning and closed transportation of muck vehicles, and strive to be a green model construction site.

The subway construction is progressing satisfactorily.

The construction of the first phase of Line 2 has attracted much attention. With the efforts of construction workers, new progress is made almost every day.

Yesterday, relevant persons of Taiyuan Metro Development Co., Ltd. introduced that up to now, the civil work of the Central Street West Station in the first opening section has been completed;

The main structures of Huazhang Street Station, South Central Street Station and Xuefu Street Station have been completed;

Renmin South Road Station, Tongda Street Station, Kangning Street Station, Jiajie Street Station, Jinyang Street Station, Changfeng Street Station, Wangcun South Street Station, Shuangta West Street Station, South Inner Ring Street Station, Nanmen Station, Jihuying Station, Mining Machine Station, Small Commodity Market Station, Xijianhe Station, etc. 14 Station has been excavated to the basement, and the main structure construction is under way;

The enclosure structures of Zhonglou Street Station and Fuxi Street Station have been completed, and foundation pit excavation is under way. Longcheng Street West Station and North Street Station are under construction.

Affected by land acquisition and demolition, livestock research station and vehicle depot have not yet entered the site.

In addition to the above stations, the tunnel section from Zhongxin Street West Station to Jinyang Street Station has been excavated for 924 meters, of which the left line has been completed.

In addition, according to the revised Taiyuan rail transit network planning, the overall layout of the city's rail transit is 8 lines with a total length of about 266.2 kilometers.

Among them, lines 1, 2, 3, 4, 5 and 6 are urban rail transit lines, and lines 7 and 8 are urban rail transit lines.

At present, the preparations for Line 3 and Line 1 have also entered the final stage, and construction is about to start, and other lines are also progressing as planned.

Comprehensive survey of construction sites in our city

According to the unified requirements of the whole city, the urban construction sites under construction must achieve "six hundred percent", including the construction site 100% enclosure, material stacking 100% coverage, vehicles entering and leaving 100% washing, road surface 100% hardening at the construction site and demolition site/kloc.

A few days ago, the reporter learned from the Municipal Urban and Rural Management Committee that law enforcement departments have carried out a major inspection of various construction sites in urban areas. Do not meet the relevant requirements, will be suspended for rectification.

Some time ago, the Municipal Urban and Rural Management Committee organized the environmental protection, sanitation, traffic police detachment and the Municipal Administrative Law Enforcement Corps, and set up the 16 inspection team to inspect all construction sites within the six districts of the city, the comprehensive reform demonstration zone and the stainless steel garden in strict accordance with the "six hundred percent" standard, including state-owned land construction sites, collective land construction sites, demolition sites, municipal construction sites and garden sites. For those websites that don't meet the standards,

Among them, * * * inspected 265 construction sites of state-owned land, 255 were under construction, and the suspension was completed 10, and it was confirmed that 243 dust control sites met the standard and failed 12.

Check the six districts of the city, the comprehensive reform demonstration zone and the stainless steel park 167 stations, of which 47 are up to standard and 120 are not up to standard.

During the inspection, it was found that the responsibilities of the relevant supervision departments of construction sites in our city were unclear, and the responsibility for dust control was unclear. Some responsible units have not paid enough attention to dust control, the division of labor is not in place, and the task is not implemented.

There are some problems in the demolition site, such as inadequate wet demolition operation, untimely removal and coverage of construction waste, and there is a big dust hazard.

There are some problems in municipal engineering and landscape engineering, such as incomplete earthwork coverage and closed hauling vehicles. The rectification effect of some responsible units on unqualified construction sites is not obvious, the case punishment is not timely, and the governance needs to be strengthened.

The law enforcement department has made it clear that the next step will be to comprehensively standardize and rectify all kinds of construction sites in the city in strict accordance with the high standard requirements of "six hundred percent" of dust control.

During the rectification period, the responsibility system for dust control will be further implemented, and the governance tasks of project construction, construction, supervision and supervision units will be clarified. Those who are ineffective in governance and supervision will be seriously investigated for relevant responsibilities.

It is necessary to further strengthen the hardware construction such as construction enclosure, road hardening, closed garbage pit and spraying facilities, and do a good job in dynamic management such as material stacking, earthwork covering, vehicle washing and wet operation to minimize dust pollution.

Unqualified construction sites shall be shut down for rectification, and can only be resumed after the responsible unit rechecks and accepts the standards.

And strictly enforce the law, punish every substandard construction site, and ensure effective governance.

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