A construction method for underground excavation of the main structure of a super-large-section subway tunnel
A technology with super-large cross-section and main structure, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as potential safety hazards, achieve the effects of improving pouring quality, good integrity, and reducing erection height
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
specific Embodiment approach 1
[0046] Specific implementation mode one: combine Figure 1 to Figure 7 Illustrate this embodiment, the construction method of a kind of underground excavation main structure of subway super-large-section tunnel of this embodiment, subway super-large-section tunnel underground excavation main structure adopts the construction of straight method, and its implementation process is:
[0047] Step 1: After the initial support of the excavation and the back grouting are completed, the concrete cushion is poured;
[0048] Adopt the method of excavation and support in layers and divisions, excavate and support in layers from top to bottom, perform grouting behind the initial support, and pour a concrete cushion to form the foundation pit support structure 1;
[0049] Step 2: Remove the concrete and steel mesh 8, and remove part of the I-beam for the first time;
[0050] The foundation pit support structure 1 is the fifth layer 2, the fourth layer 3, the third layer 4, the second laye...
specific Embodiment approach 2
[0072] Specific implementation mode two: combination figure 1 To illustrate this embodiment, the sequence of excavation and support in Step 1 of this embodiment is: excavation and support in layers from top to bottom, with the same layer first on both sides and then in the middle to complete all the excavation and support work. With such setting, the efficiency of excavation and support is improved, and safety is ensured. The other components and connections are the same as those of the first embodiment.
specific Embodiment approach 3
[0073] Specific implementation mode three: combination figure 2 To describe this embodiment, the distance between two adjacent I-beams exposed on the partition wall 7 from the first floor to the fifth floor of this embodiment is 0.5m. With such a setting, the spacing is reasonable, which is convenient to ensure the safety performance of the support. Other compositions and connections are the same as those in Embodiment 1 or 2.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com