Quality control lectures are guaranteed

Correspondent He Yan

"Adjust the parameters immediately and check the reason." On the evening of September 4th, at the Tuning Division Tunnel of the Shimba Sixth Team Captain of the Sixth Team of Shield at the Donghu Station of Guangzhou Metro Line 10 of the China Railway 11th Bureau There are abnormalities. He immediately requested that the construction staff to rectify immediately in accordance with the "Shield Digging Sixth Character" formulated by the company.

"'Control over mining, saturated grouting, timely measurement, and advance protection' is like a golden bell cover, which can realize the quality control of comprehensive tunnel construction." Zhou Xueqian said vividly.

At present, the company's projects are all over the country, and the geological conditions are diverse. The geological content of some projects is abundant and the water pressure is large, which can easily lead to structural leakage phenomenon. In addition, the subway projects are mostly in urban areas. The underground pipelines are intricate and the surrounding construction buildings are easy to settle. During the shield excavation process, the sedimentation control requirements for constructing buildings are high. As a specialized construction enterprise with shield construction as the main business, the China Railway 11th Bureau Urban Rail Company summarizes the key factors of the quality control of Shield Construction for molding tunnels, grasp pre -control, pull out details, promote standardization, and systematically establish the standardized standardization of engineering entity quality control.

If you control the super excavation, you must monitor the unearthed situation in real time. The saturated grouting must follow the second grouting in time. When measured in time, the gap between the pipes must be dynamically measured. For advance protection, the end of the end must be reinforced in advance. Due to the strict implementation of the "sixteen characters", Donghu Station -Binjiang East Road Station Shield Division has set a record of being superior, excellent, and existing in the millimeter level.

In addition to the "16 -character policy", the company also innovatively proposed the "Eight Regulations for Tunnel Quality Management", which is controlled by the consistency control of the slurry, the piping waterproof paste, the strata loss rate, the tube tube water seepage rate, the pipe tube, and the pipeline The quantity of the tablet, the convergence of the tube, and the axis control of the tunnel strictly strictly stipulated, and at the same time, the "five -step grouting method" was proposed to strictly control the construction of the building.

At the interval of Zhongda South Gate Station -Wulifeng Station, the captain of the shield carefully inspected the pipes to stop the stickers of the strip, and the quality of the shield tunnel was inspected by the shield tunnel. In the end, the internal and external beauty of the formation shield tunnel reached 100%, and the adjacent bid section came to the "scripture".

At present, the company's cumulative shields have been excavated more than 570 kilometers, and they are the most excavated engineering companies in China Railway Construction Shield. In addition, they have won 12 national high -quality engineering awards and more than 40 provincial and ministerial high -quality engineering awards.

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