Tunnel mine drawing groove area equidistant sectoral hole arrangement blast construction method
A construction method and tunnel technology, applied in blasting and other directions, can solve the problems of unsatisfactory cutting effect, large clamping force of surrounding rock, and reduced circulation footage, and achieve the effect of promoting rational utilization, improving utilization rate, and uniform and reasonable distribution.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0025] see Figure 1-3 , a blasting construction method for equidistant fan-shaped holes in a tunnel excavation and expansion area, comprising the following steps:
[0026] Step S1, design and drawing: tunnel blasting drilling forms are generally divided into peripheral holes, buffer holes (two-ring holes), auxiliary holes, expansion holes, cutting holes, etc., and various blast holes should be selected according to the actual situation during construction According to the blasting parameters of the tunnel, the blastholes should be arranged reasonably according to the lithology grade of the tunnel and the blasting design requirements of the tunnel. In order to meet the requirements of the drilling direction and the accuracy of the hole network parameters, the "equidistant fan-shaped hole layout method" is used for CAD software drawing, that is: according to the design hole network parameters and surrounding rock conditions, the tunnel face is excavated and expanded. The hole ...
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