Complete node goals as scheduled!The Shenzhen -Middle Channel S08 contract section is completed

Guangzhou Daily · Xinhuacheng reporter learned from the Guangdong Provincial Transportation Group that the main project of the S08 Contract section of the Shenzhen Conduct of the Guangzhou Salvation Bureau Consortium of the Poly Growing Growing Growth of the Guangzhou Provincial Salvation Bureau has been completed recently.

The S08 contract section of the Shenzhen-Middle Channel is responsible for the nine pipe sections (E32-E24) pouring pre-production and floating transportation installation of the nine pipelines (E32-E24) on the east side of the Shenzhen-Middle Channel. High -quality advancement, the node target task was successfully completed as scheduled. On July 22, 2022, the E24 pipe section of the Shen -Middle Channel's Shenluan Tunnel was completed, marking the completion of the main project of the S08 contract section of the Shenzhen Channel.

Intelligent sinking tube breaks through the "core" technology

"Looking back on the project construction process, since the establishment of the Shenzhen -China S08 contract section, under the difficulties and challenges of the complex construction environment, the tight construction task of construction, and the severe epidemic prevention and control situation, Poly grew up and the Guangzhou Salvation Bureau 'to twist into a strand Steel ', sincere cooperation, work together, with the average "complete pipe section of pipe section in one month, and the construction speed of a tube festival" a month, safe, high -quality, and efficiently complete the main project construction of the Shenzhen -China S08 contract section. " Liu Gangliang, chairman of Poly Long Limited Co., Ltd. said.

The deep and middle channel's submarine tunnel is 6,845 meters long, of which the sinking pipe section is 5035 meters long. It consists of 32 tube festivals and one final connector. It is the world's first two -way eight -lane steel shell concrete sink tunnel. According to the design, the deep and middle channel sinking pipe section is a rectangular double steel shell, and the internal filling of the composite concrete composite structure type. Each pipe section has more than 2,200 closed partition warehouses, high pouring accuracy requirements, and the pouring process is basically irreversible. Earlier, there was no relevant domestic experience in the "core" experience.

"In simple terms, this structure form is the steel plate with concrete, similar to the" sandwiches "structure, which has the advantages of large carrying capacity and good waterproof performance. The composition of a cubic meter closed barriers is a worldwide problem to realize the solidity of concrete filling in a closed barrier. "Wu Xudong, the project manager of the S08 contract section of Poly, introduced.

The more difficult, the more forward. In order to break through the "core" technology of the steel shell, the Poly Growing Construction Team exerts the spirit of the "Traffic Army", and the construction goal of "every high -quality and auto -concrete of each party to ensure the quality of each barriers" is used. The project is high -quality construction and development. The team's innovative use of the dense concrete pouring process effectively solves the high technical characteristics and difficulties of construction from the high amount of water pouring in the tube festival, high strength, and high operating continuity requirements, filling the gap in the large -scale self -dense concrete pouring process in China.

During the period, the Poly Gallow Construction Team also developed a set of intelligent pouring equipment and systems in the world. This system covers the entire process of production, transportation, pouring, and detection of steel shell sinking tube concrete, which can achieve automatic concrete fabrics, automatic pouring and pouring speed control. Comply with acceptance standards.

Give full play to the role of the pioneer of party members, grab the "golden 16 -hour" construction section, "white+black" without intermittent pouring ... a series of scientific and powerful production organization methods, constantly refresh the pouring speed. At the speed of "completing a pipe section in one month", promote the high -quality construction of the Shenzhen -Middle Channel project, and write a new record of the construction speed of the large submarine sink tube tunnel.

"Return 801" refresh deep medium accuracy

The S08 contract section of the Shenzhen-Middle Channel is responsible for the construction of 9 pipelines on the east side of the tunnel, 4 of which are standard pipelines (E27-E24), 165 meters long, 10.6 meters high, and 46 meters wide; E32 — E26), 123.8 meters long, 10.6 meters high, width from 46 meters to 55.4 meters; all non -standard pipelines of the project are collected, with "ultra -width, width, deep burial, large reflection volume, dug sand ponds, dug sand pits The five world -class technical difficulties, such as the stability of the regional stability, are unprecedented in engineering and technical difficulty.

In order to ensure that the wet drag of the tube festival is in place, the Guangzhou Salvation Bureau of the Ministry of Transport conducted the "Yellow Ship 030" heavy load and the E32 physical tube festival trailer drill to ensure that the operators are familiar with the entire process of the pipeline operation and the operation of the floating transport operation, and and and the operation. By discovering the problem of solving the exercise operations, the maturity and reliability of the trailer operation technology was verified. At present, the project department has successfully applied for a number of patents such as long -distance floating trailer bands of complex waterway curves from the outer sea.

In order to achieve accurate docking of the festival, the Guangzhou Salvation Bureau collaborated with a number of top enterprises in many industries to innovate the world's first ballast -separated full -intelligent underwater "3D printer" high -precision gravel flat ship- "heavy responsibility 801". The ship is the largest gravel foundation of the world's most depth of the world. Its original horizontal section score is the first case in the world. It can meet the needs of the foundation of gravel. Essence "For example, 'heavy responsibility 801' can be paved with a large amount of gravel uniformly, so that the pipelines can be placed on the bottom of the water, and they can be lying on it. , Successfully completed the floating transportation installation of 9 section of sinking tube, realized the deep and medium speed of the "one month of the section of the tube", and created the deep accuracy of the underlying millimeter -level docking of the sinking tube. " Director Wu Jiancheng said.

In the sinking docking operation, to achieve millimeter -level docking accuracy, it is necessary to closely control the vertical and horizontal accuracy of the underwater posture. To this end, the construction team has also independently developed a set of sink -tunnel construction auxiliary decision -making systems that combine the full -bodile and attitude sensor, such as the whole station instrument, attitude sensor, etc., which can display the installation of the pipeline in real time and achieve the entire process of navigation of the pipeline. Positioning and monitoring to comprehensively guarantee the need for docking accuracy. At present, the Shenzhen -Middle Channel's sinking tunnel has accumulated 28 pipelines with a total installation length of 4372.8 meters. The main project of the Shenzhen -China S08 contract section was successfully completed, which took a solid and powerful step for the project in 2024.

The Shenzhen -Middle Channel is the core channel of the Guangdong -Hong Kong -Macao Greater Bay Area. It is a world -class cross -sea cluster project that integrates "bridges, islands, tunnels, and underwater interoperability." After completion, the pressure of Guangdong Zhujiangkou Transportation Road will be effectively released, the cross -strait interconnection of the Guangdong -Hong Kong -Macao Greater Bay Area will be promoted and the rapid flow of various elements will be improved, and the level of "hard Unicom" and "soft Unicom" in the Guangdong -Hong Kong -Macao Greater Bay Area will be improved.

Wen, Picture/Guangzhou Daily · Xinhua City Reporter: Li Yan Correspondent: Huangxia Guangzhou Daily · Xinhua City Editor: Peng Wenqiang

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