Karstic water treating method for diversion tunnel

A water diversion tunnel and treatment method technology, applied in water conservancy projects, hydropower, hydropower stations, etc., can solve the problems of unguaranteed sealing effect, great construction difficulty and construction risk, and high treatment cost, so as to solve the risk of water gushing, eliminate Potential safety hazards and the effect of ensuring structural safety

Inactive Publication Date: 2015-05-13
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the inrush of water, according to the traditional method, it mainly adopts buried pipe drainage in the cave, consolidation grouting and other methods to deal with it. Since the actual direction of karst is relatively complicated, wh

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Karstic water treating method for diversion tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] In specific implementation, such as figure 1 As shown, follow the steps below to implement:

[0017] 1. According to the surrounding rock conditions exposed by the excavation of the water diversion tunnel 1, the exposed position of the water inflow point 2 in the water diversion tunnel and the water inflow, etc., the position and development of the karst water channel 3 are estimated to determine the plane position of the drainage tunnel 4.

[0018] 1. After the plane position of the drainage tunnel 4 is determined, combined with the actual topographical conditions on the site, determine the excavation floor elevation and longitudinal slope of the drainage tunnel 4. The thickness of the surrounding rock between the drainage tunnel floor and the diversion tunnel roof should not be less than 1 Digging path.

[0019] If the inferred karst water channel 3 is not revealed after the drainage tunnel 4 is constructed to the design length, branch holes 6 shall be const...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Widthaaaaaaaaaa
Heightaaaaaaaaaa
Login to view more

Abstract

The invention discloses a karstic water treating method for a diversion tunnel. According to the method, based on the state of exposed surrounding rocks during the diversion tunnel excavation process, and the position and the water pouring volume of a water pouring point of karstic water in the diversion tunnel, the position and development condition of a karstic water channel above the diversion tunnel is predicted. A drainage tunnel which is in space-crossing with the diversion tunnel is dug in the direction from the ground to the position of the karstic water channel above the diversion tunnel, the karstic water channel above the drainage tunnel is cut off by the diversion tunnel, the karstic water is drained through the drainage tunnel, and dangers to the diversion tunnel from the karstic water is eliminated, so that the structural safety of the diversion tunnel is guaranteed. According to the karstic water treating method for the diversion tunnel, be means of a comprehensive treating principle of 'relying mainly on discharging and combined with prevention, draining, intercepting and blocking', and a treating plan is made in accordance with local conditions, the potential safety hazard to the diversion tunnel from the karstic water is thoroughly eliminated, the possible occurrence of a water bursting risk in the diversion tunnel is effectively solved, and the structural safety of a water diversion system is guaranteed.

Description

technical field [0001] The invention relates to a method for treating karst water in a water diversion tunnel, belonging to the technical field of hydraulic construction in water conservancy and hydropower projects. Background technique [0002] Karst water is the groundwater that exists in the dissolution fissures and caves of soluble rock formations, also known as karst water. Its most obvious feature is that its distribution is extremely uneven, and it is especially common in limestone areas. Medium-thick limestone is more favorable for the layout and structural stability of the water diversion tunnel, but the development of cracks and karst is often accompanied by water gushing and seepage, and even concentrated water gushing occurs during the flood season. During the construction period, the tunnel encounters a sudden attack of water gushing and extremely large water gushing, and it is often submerged. The construction site, washing away machinery and tools, causing equ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E02B9/02
CPCE02B9/02Y02E10/20
Inventor 张高雷声军贺双喜刘欣
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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