The results of the 7 geotechnical engineering innovation applications of China Railway Institute have been affirmed by the China Enterprise Association!

The China Construction Enterprise Management Association recently announced the results of the technological innovation application of geotechnical engineering in 2022. The first -class results of the first and second results of China Railway were won.

The first -class results are the integrated process of the pillar in the subway stations completed by the second company; the six innovative technologies that have won the second -class results are: the comprehensive comprehensive construction of the tunnel mechanized construction under the complex geological conditions completed by the five companies, Technology, the construction control of the foundation pit pumping and anti -birch construction control of the foundation pit of Guangzhou Branch, the construction technology of the positive and negative pressure of the foundation pit, the construction technology of the Chengdu Sandy Stage Shield Construction Technology, the Xi'an Metro Cracks set out key technologies for anti -section construction, shield tunnel construction technology in the rock -soluble strata.

The selection of this achievement aims to summarize the promotion of the technological innovation results of geotechnical engineering, and promote the improvement of the technical level of geotechnical engineering construction. The results of the group company's organization declaration are the excellent results formed by the summary of the heavy rock and soil engineering projects such as underground space engineering, foundation pit engineering, and tunnel engineering. It can be promoted, conforms to the development concepts of low carbonization, intelligence, and has outstanding economic and social benefits.

The integrated process of the pillar in the pile in the subway station optimizes the integrated construction process in the pile in the subway dark digging station, and the procedures of artificial digging holes and artificial watering positioners in conventional craftsmanship are canceled. Diamond compact mud circulation system, multi -functional vertical machinery, "four -point line" vertical method, etc., and install steel pipe columns to realize the integrated construction of mid -pile pile base and steel pipe column, effectively reduce safety risks. Improve construction efficiency and ensure construction quality. The results have been successfully applied to Beijing Metro Line 12, No. 13, Changchun Metro Line 5 and other projects.

Beijing Metro Suzhou Bridge Station formed the negative first and second floor piles

Under complex geological conditions, the comprehensive technology of tunnel mechanization construction has formed a new pattern of tunnel engineering construction with all -processes mechanization operation and informatization management of tunnels, and realizes the fine management of tunnel construction, safety, quality, progress, and efficiency in China In the leading level.

Comprehensive technology of mechanized construction of tunnel under complex geological conditions

Comprehensive technology of mechanized construction of tunnel under complex geological conditions

The construction control of the foundation pits and anti -raising construction control above the subway controls the maximum deformation value of the subway tunnel to about 6 mm, and avoids the stop work and secondary reinforcement caused by the excessive standards of subway tunnel deformation. The economic benefits are significant.

Operating the base pit above the subway to excavate

Foundation pit positive and negative pressure combined with precipitation construction technology improves the precipitation efficiency of the foundation pit, and realizes the excavation of ignorance of the entire process of foundation pit. The results have been successfully applied to projects such as Hongshengsheng Sha Station of Guangzhou Metro Line 7 and Licun Station, Foshan Metro Line 3.

Founded pit positive and negative pressure combined precipitation construction technology

The construction technology of Chengdu Salmon Mattixing Shield Construction mainly studied the optimization of the improvement of residue, reducing economic losses caused by severe equipment wear and excessive settlement, and further improved construction work in sand pebble strata.

Chengdu sandyone strata shield is actual hair

The key technologies of the Xi'an subway cracks and anti -sections of the anti -section of the Metro Subway are made in the design and construction of the deep -founded pit enclosure, deep -founded pit precipitation, shield machine selection, shield excavation construction, etc. Essence

Xi'an Composite Yellow Earthquake Shield Machine Customized Knife Plate

The construction technology of the shield tunnel in the rock -soluble strata is aimed at the first shield -soluble layer for the first shield, and the comprehensive detection method is a leading position for the results of the cave detection. Essence

The formation tunnel completed in the rock -soluble strata

(Correspondent Chen Wenyuan editor Huang Bin)

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