by The ancient city of Shaoxing, Jishan and Jianshui, Zhongling and Yuxiu.
Shaoxing is located in the Yangtze River Economic Belt on the coast of the East China Sea.
It is famous for its rich ancient Yue culture at home and abroad.
Now, the cultural ancient city has taken on a new look.
Hangzhou Shaoxing Tai expressway, the expressway with the longest mileage and the largest single investment among the newly built and planned expressways in the 12th Five Year Plan of Zhejiang’s highway transportation, is located here, marking a beautiful fast lane for Shaoxing’s development.
A few days ago, the reporter walked into the Pingshui tunnel construction site of the third contract section of Hangzhou shaotai Expressway (hereinafter referred to as “Hangzhou shaotai third contract section”) constructed by Zhejiang Jiaogong Group Co., Ltd.
(hereinafter referred to as “Zhejiang Jiaogong”).
Under the blue sky and green mountains, there were a crowd of people, and a blood boiling traffic battle scene.
In the tunnel, the sound of the machine is loud.
Only an intelligent rock drill with a pair of huge “arms” can be seen drilling on the face of the tunnel.
When the drill is lifted and lowered, two round holes of the same size and depth will appear in front of you.
The high level of tunnel construction mechanization is amazing.
At the same time, in the processing area of the small component prefabrication center, the workers are methodically producing the hexagonal blocks of the tunnel and the cable trench cover plates on the assembly line.
A batch of exquisite finished products are stacked on the side.
At a glance, people think that they have entered the boutique warehouse of the large supermarket by mistake, and the exquisite small component construction is famous.
Tunnel safety education.
In 2016, the Ministry of transport issued the guiding opinions on building highway and water transport quality engineering, which clearly put forward the concept of creating “quality engineering”, and the construction objectives of highway and water transport engineering should be high-quality and durable, safe and comfortable, economic and environmental protection, and social recognition.
From January 2017, the three-year demonstration and creation of highway and water transport quality engineering will be carried out.
In July 2016, the Department of transportation of Zhejiang Province took the lead in the country and first issued the guiding opinions on carrying out the construction activities of “quality engineering” of highway and water transportation in Zhejiang Province.
The construction of comprehensive transportation infrastructure is in full swing, and the practice of comprehensively improving the quality of transportation engineering is also deepening.
On August 21, 2017, the Zhejiang provincial road and water transport quality project promotion meeting and the road tunnel construction standardization site meeting were grandly opened in the project base of the third contract section of Hangzhou, shaotai.
Zhejiang Jiaotong is the contractor of this section and is responsible for the specific preparation of this site meeting.
It is reported that the third contract section of Hangzhou shaotai expressway is the first section of Shaoxing Jinhua section of Hangzhou shaotai expressway.
It starts from Dayaoshan and ends at Pingshui tunnel.
The main line is 7.06 kilometers long, involving one Jianhu interchange, 31 bridges and 2.5 tunnels, with a total length of 3.49 kilometers.
1.
The concept of “seven mountains, one water and two fields” in the standardization of tunnel construction has been cast in advance.
The terrain of Zhejiang Province is complex, and the area of mountains and hills accounts for more than 70% of the total area of the province.
Therefore, the tunnel engineering occupies a high proportion in the construction of expressways and national and provincial highways in the province.
The total length of Hangzhou Shaoxing Tai expressway is about 162 kilometers, including 115 kilometers of Shaoxing Jinhua section.
The ratio of highway bridges and tunnels is as high as 80%, which puts forward higher requirements on the difficulty of tunnel construction.
The multi arm rock drill realizes accurate drilling.
At the beginning of the project construction, the third contract section of Hangzhou, Shaoxing and Taiwan put forward the construction goal of “Creating Provincial excellence and striving for national excellence”, and actively formulated a set of project management plan throughout the whole process of the project construction in accordance with the relevant requirements of the Ministry of transport and the Provincial Department of transport for the establishment of “quality engineering”.
The “three modernizations” creation concept of “standardization, refinement and informatization” is the construction guide throughout, leading the “three innovations” of “concept innovation, management innovation and technology innovation” to move forward.
Under this background, the third contract section of Hangzhou, shaotai was “customized” for the first time in tunnel construction.
It introduced and independently developed “nine sets of tunnel series construction equipment”, which was fully applied in the whole process of tunnel construction, triggering a “Great Revolution” in tunnel construction and casting a “model” for tunnel construction standardization in Zhejiang Province.
“In the past, only a few sets of simple equipment were used sporadically in the tunnel construction process, and it was the first time that mechanized equipment was used in the whole process in the construction of highway tunnels in the whole province and even in the whole country.
The terrain of the project area is complex and there are many fault zones, and the construction technology is difficult.
The project department combines the actual situation of the project, and through the combination of purchase and independent innovation, R & D and improvement of equipment, greatly reduces the safety risk of tunnel construction and improves the project quality More guarantees.
” The technical director of Hangzhou shaotai No.
3 contract section project introduced to the reporter, “nine sets of tunnel series construction equipment, namely two machines and one bridge and six vehicles, of which the two machines are multi arm rock drills and wet spraying robots, and the first bridge is a self-propelled mobile trestle.
The six vehicles are multi-functional arch frame trolley, second lining thickness pre inspection trolley, multi-functional waterproof operation trolley, new type second lining trolley, second lining maintenance trolley and cable trench trolley.” The new type of secondary lining trolley improves the common quality problems such as the dislocation of secondary lining.
“This is a multi arm rock drill.” Along the direction pointed by Li Kaibo, a technician at the construction site, the reporter saw this “Transformers” that can be opened from left to right.
It is understood that this is the first multi arm rock drill used in the construction of highway tunnels in Zhejiang Province.
It has achieved all-round accurate drilling, and the number of drilling people in the face has been sharply reduced from 18 to 3.
It has improved the safety factor and construction efficiency, and at the same time, the qualified rate of anchor rod setting angle has been increased to 100%..
