Underpass superhighway tunnel trunk excavation static blasting construction method
A technology of static blasting and expressway, which is applied in the field of tunnel blasting and excavation, can solve problems such as unreasonable construction process, damage to tunnel initial support, and difficulty in controlling adverse effects of strata, so as to achieve safe production, reduce damage, and expand The effect of development prospects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0067] The present invention will be described in detail below with reference to the drawings and embodiments:
[0068] Attached Figure 1-5 It can be seen that a static blasting construction method for excavation of a tunnel underneath the expressway. The excavation and support construction of the tunnel follows "short footage, weak blasting, less disturbance, early injection of anchors, frequent measurement, and tight closure". In principle, all surrounding rocks of this tunnel are excavated by the double-side pilot method. The footage of each section of the Tangjin high-speed tunnel is controlled within the range of 0.8-1.0m.
[0069] Excavation of Tunnel Grade V Surrounding Rock
[0070] ①See the excavation sequence of grade V surrounding rock figure 1 .
[0071] ②The sequence of excavation and support is explained as follows:
[0072] The excavation and support of the cave body include the following steps:
[0073] a. The pilot tunnel is pre-supported by the grouting of the pipe ...
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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap