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Escape method suitable for water gushing and mud gushing in karst tunnels

A tunnel and water gushing technology, which is applied in earth drilling, mining equipment, safety devices, etc., can solve the problems of inability to escape, escape passages cannot be connected, etc., and achieve the effect of simple structure, convenient construction, and low investment cost

Active Publication Date: 2021-11-23
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the escape channel is made of steel pipes, when the tunnel is excavated by steps, the upper and lower steps cannot be connected to the escape channel; and the escape channel is set at a low position, when the karst tunnel experiences water and mud inrush, the purpose of escape cannot be achieved

Method used

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  • Escape method suitable for water gushing and mud gushing in karst tunnels
  • Escape method suitable for water gushing and mud gushing in karst tunnels
  • Escape method suitable for water gushing and mud gushing in karst tunnels

Examples

Experimental program
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Effect test

Embodiment 1

[0046] An escape refuge system suitable for water and mud gushing in karst tunnels, comprising a main tunnel system and an auxiliary tunnel system, and an escape passage connecting the main tunnel system and the auxiliary tunnel system.

[0047] The main tunnel system includes an escape platform 1, and the escape platform 1 includes a first escape platform 11 arranged in the constructed cavern 03 of the normal tunnel section 01 with the second lining applied, and a first escape platform 11 arranged in the unapplied secondary lining tunnel section 01. The second escape platform 12 at the high position of the arch wall 05 of the main tunnel section 02.

[0048] Specifically, such as Figure 1-Figure 2As shown, the first escape platform 11 is set in the constructed cavern 03 of the second lining tunnel section 01, and the difference between the elevation of the first escape platform 11 and the elevation of the cave bottom 04 is greater than or equal to 1.5 m. The first escape p...

Embodiment 2

[0055] Such as Figure 9 As shown, an escape and refuge method suitable for water gushing and mud inrush in karst tunnels includes the following steps:

[0056] Step 1: Construction of an escape and refuge system suitable for water and mud inrush in karst tunnels as described in Example 1;

[0057] Step 2: When water and mud gushing occur in the main hole of the karst tunnel,

[0058] Escape personnel who are located in the main tunnel section 01 of the completed second lining enter the nearest constructed cavern 03 and use the ladder 2 to climb up to the first escape platform 11 to escape and seek refuge;

[0059] The escape personnel who are located in the main tunnel section 02 without the second lining use the ladder 2 to climb up to the second escape platform 12 located at the arch wall 05 to escape and take refuge.

[0060] When water and mud gushing occur in the auxiliary tunnel 06 of the karst tunnel,

[0061] Escape personnel located in section 07 of the through-pa...

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Abstract

The invention discloses an escape and refuge method suitable for water and mud inrush in karst tunnels. The platform and the escape platform are respectively arranged in the constructed cavern of the main cave section with the second lining or the arch wall of the main cave section without the second lining. There is a climbing ladder under the escape platform, and a Emergency escape materials, the escape passage includes the penetrating cross passage connecting the auxiliary tunnel and the main tunnel, the auxiliary tunnel system includes escape caverns, the escape caverns are respectively arranged in the non-penetrating cross passage and the auxiliary tunnel, and emergency escape materials are provided in the escape cavern. The escape and refuge system of the present invention can take care of personnel at any position in the tunnel, has a simple structure, utilizes the existing facilities of the tunnel, has low investment cost, is convenient for construction, and reduces the impact of the escape and refuge system on the normal process of the tunnel.

Description

technical field [0001] The invention relates to the technical field of tunnel escape protection technology, in particular to an escape method suitable for water and mud inrush in karst tunnels. Background technique [0002] Due to the diversity, complexity and irregularity of karst and karst water development, the risk of water and mud inrush during construction of karst tunnels is high. At present, the problem of water and mud inrush in karst tunnels is mainly based on forecasting. The common method is to use advanced geological forecasting methods to judge the development of groundwater in front of the tunnel face. However, due to the complex geological conditions and the diversity and irregularity of karst development, It is impossible to fully grasp the situation in front of the operator, resulting in water and mud gushing accidents from time to time. During tunnel construction, traditional escape methods use pre-set steel pipes as escape pipes. Since the escape channe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F11/00E21F17/00
CPCE21F11/00E21F17/00
Inventor 高强钟昌桂杨举明张慧玲张磊陶伟明朱勇邸成卿伟宸王加一熊国兴刘伟中侯俊王芳曾宏飞陈柯霖
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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