Shallow-buried excavation construction method of down-traversing underground river by city underground comprehensive pipe gallery

Abstract

The invention discloses a shallow-buried excavation construction method of down-traversing an underground river by a city underground comprehensive pipe gallery, and relates to the technical field ofpipe gallery construction. The shallow-buried excavation construction method of down-traversing the underground river by the city underground comprehensive pipe gallery comprises the following steps thata top plate of the underground river is broken into a hole, constructors go up and down a riverway through the hole, a cofferdam made of soil and sand bags is applied in the riverway to cut off theriver, and the height of the cofferdam is 1.5m. According to the shallow-buried excavation construction method of down-traversing the underground river by the city underground comprehensive pipe gallery, through the arrangement of a waterproof plate and a concrete protective layer, the seepage of long-standing river floor can be well prevented, a dry space is formed by the cofferdam and a river embankment, the number of times of grouting in the cross-section and top small conduits during the excavation process are decreased, the impact of the construction of the pipe gallery on the surrounding ecological environment and lives of residents is avoided, meanwhile no special requirements for the construction materials and machinery used in construction is achieved, the working efficiency is provided, and meanwhile the safety of construction personnel is well ensured.

Description

Technical field [0001] The invention relates to the technical field of pipe corridor construction, in particular to a construction method for urban underground comprehensive pipe corridors to pass through underground rivers with shallow burying. Background technique [0002] The importance of the underground comprehensive pipe gallery has gradually been recognized by more and more cities. The underground comprehensive pipe gallery has become an indispensable supporting municipal facility in the city. The underground comprehensive pipe gallery is usually built about 8m underground. Meet the underground river and so on. [0003] The traditional shallow burying and digging methods generally use the following two methods: [0004] The first method usually adopts conservative construction methods, reduces the cycle footage, and matches the strengthened support system to excavate the pipe gallery. The strengthened support system usually adopts the following measures: such as the use of la...

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Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a construction method for the urban underground comprehensive pipe gallery to pass through underground rivers and shallowly bury it, which solves the problem of usually more Pay attention to take treatment measures inside the cave and strengthen the support inside the cave. Even if treatment measures are taken outside the cave, only a certain kind of measure is often taken, and comprehensive treatment measures outside the cave are seldom considered. Therefore, both construction efficiency and construction safety It cannot meet the construction needs very well, and it is difficult to ensure the safety of construction personnel while reducing work efficiency.

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