CN-122014330-A - Economical rapid escape highway tunnel and attached escape passage setting method

CN122014330ACN 122014330 ACN122014330 ACN 122014330ACN-122014330-A

Abstract

The invention discloses an economic rapid escape highway tunnel and an attached escape passage setting method, which belong to the technical field of tunnel underground engineering and safety disaster prevention, and the invention aims at a tunnel which is designed to be longer than 350m and does not have the condition of setting a transverse escape passage, and is provided with an attached escape passage for escape and rescue. The overall length, longitudinal slope and position schemes of the attached escape passage planned by the invention are set based on the basic information of the length, longitudinal slope and driving direction of the tunnel. The structure body of the attached escape passage consists of a passage rock-facing side structure and a passage partition wall, the partition wall is provided with a smoke isolation door, and the structure body is designed based on building limit and external layout requirements of the building limit. Compared with the arrangement of a parallel independent escape passage, the escape system has higher escape efficiency, higher safety, obvious investment saving and higher economical, practical and popularization and application significance.

Inventors

BAI GUOQUAN
QIN TONGTONG
WANG ANMIN
XIAO ZHIFEI
QIN QINGSONG
CHEN JUNBO
CHEN XINGYU
HE JIAYIN
XUN WENJIE
WANG YUBO

Assignees

云南省交通规划设计研究院股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. The economic rapid escape highway tunnel is characterized in that the length L is more than 350m, the tunnel rapid escape highway tunnel does not have the condition of arranging a transverse escape passage, the tunnel rapid escape highway tunnel comprises a tunnel positive hole structure and an attached escape passage arranged on one side of the tunnel positive hole structure, the tunnel positive hole structure and the attached escape passage are arranged in parallel, a partition wall is arranged between the attached escape passage and the tunnel, smoke isolation doors are arranged on the partition wall along the extending direction of the tunnel in an array mode, and the tunnel positive hole structure, the partition wall and the attached escape passage form a tunnel main body.
2. A method of setting an attached escape route as claimed in claim 1, comprising the steps of: s1, basic information of a positive tunnel structure of a planned tunnel is collected from a design file, wherein the basic information comprises length, longitudinal slope and driving direction; S2, according to the information collected in the step S1, the overall arrangement scheme of the length, the longitudinal slope and the position of the attached escape passage is drawn; S3, a structural body composition scheme of the attached escape passage is planned; s4, building limit and external layout scheme of the building limit of the attached escape passage are planned; S5, a smoke isolation door position scheme of the attached escape channel is planned; S6, planning an escape scheme of the tunnel provided with the attached escape passage under the fire disaster working condition.
3. The method of claim 2, wherein in step S2, the length of the attached escape passage is equal to the length of the tunnel positive hole structure, the longitudinal slope is equal to the longitudinal slope of the tunnel positive hole structure, the longitudinal slope is positioned on the left side of the traveling crane of the tunnel positive hole structure, and the longitudinal slope is arranged in parallel with the tunnel positive hole structure.
4. The method of claim 2, wherein in step S3, the structure of the attached escape passage is composed of a passage rock-facing side structure and a partition wall, the passage rock-facing side structure is connected with a tunnel positive hole structure in sequence, and the passage rock-facing side structure, the partition wall and the tunnel positive hole structure form a tunnel main body structure together.
5. The method according to claim 2, wherein in step S4, the building boundary of the escape passage is rectangular, and the outer part of the building boundary is arranged as a space between the structure of the escape passage and the outer part of the building boundary.
6. The method of claim 5, wherein the space defined by the structure of the escape passage provides a building limit and a space required by the layout outside the building limit, and the layout outside the building limit comprises a drainage ditch, a smoke exhaust fan and a lighting lamp.
7. The method for setting the attached escape passage according to claim 6, wherein the building limit is 2.0m wide and 2.5m high, the surplus between the structural body of the attached escape passage and the left side and the right side of the building limit is 5cm, the bottom edge of the building limit is equal to the pavement of a walking path in a tunnel positive hole structure, a drainage ditch is arranged in the space between the structural body of the attached escape passage and the bottom edge of the building limit and is filled with concrete, and a smoke exhaust fan and a lighting lamp are arranged in the space between the structural body of the attached escape passage and the top of the building limit and are started in a fire working condition of the tunnel positive hole structure.
8. The method of claim 2, wherein in the step S5, openings are arranged on the partition wall along the extending direction of the tunnel in an array manner, the distance between every two openings is smaller than 350m, the distance between every two adjacent openings of the tunnel is smaller than the distance between every two openings, the number of the openings is the ratio of the length of the tunnel and the distance between every two openings, the number of the openings is reduced by a fraction, and each opening is provided with a smoke isolation door.
9. The method of claim 8, wherein the distance between the openings is 200m.
10. The method for setting an attached escape passage according to claim 2, wherein the escape scheme in the step S6 is that if the distance between the person and the tunnel hole in the tunnel positive tunnel structure is greater than the distance between every two smoke-isolation doors, the person enters the attached escape passage from the adjacent smoke-isolation doors, then the smoke-isolation doors are closed, the person escapes from the attached escape passage to the outside of the tunnel, and if the distance between the person and the tunnel hole in the tunnel positive tunnel structure is smaller than the distance between every two smoke-isolation doors, the person escapes from the tunnel positive tunnel structure to the outside of the tunnel.

Description

Economical rapid escape highway tunnel and attached escape passage setting method Technical Field The invention relates to a highway tunnel escape passage setting method, in particular to an economic rapid escape highway tunnel and an attached escape passage setting method, belonging to the technical fields of tunnel underground engineering and safety disaster prevention. Background The safety guarantee of the highway tunnel operation period is very important, and particularly when emergency accidents such as fire disaster and the like occur, the aim of ensuring that people in the tunnel escape quickly, safely and effectively is a core target of the disaster prevention and rescue design of the tunnel. The first civil engineering (JTG 3370.1-2018) of the highway engineering industry standard (hereinafter referred to as "new standard") of highway tunnel design specification is implemented from 5 months 1 day in 2019, and replaces the original (JTG D70-2004) of highway tunnel design specification (hereinafter referred to as "old standard"). The new and old regulations prescribe that a transverse channel should be arranged between the separated double-hole tunnels in the overall design to assist escape. Compared with the maximum spacing 500m of the crosswalk specified by the old standard, the new standard reduces the maximum spacing to 350m, aims at shortening the escape distance of people, and also implies the meaning of 350m of the maximum escape distance of people in the tunnel positive hole. In addition, the new specification adds the following terms that the single-hole extra-long tunnel is preferably provided with parallel channels connected through transverse channels, and the transverse channels connected with the ground can be added when the terrain conditions allow. Although the design standard of the escape and rescue channel is improved in a new standard way, in the practical engineering application and the tunnel technology development, the existing escape and rescue channel setting method still has the following technical limitations: The pressure of engineering economy is increased, the new specification reduces the maximum spacing of the pedestrian crossing channels from 500m to 350m, so that the number of the crossing channels is obviously increased, and the investment cost of tunnel civil engineering is directly increased. The coverage of part of tunnels is lost, the new specification only prescribes the requirement of setting parallel channels for a single-hole extra-long tunnel, and the requirement of setting or not setting a single-hole non-extra-long tunnel and how to set an escape and rescue channel is not definitely prescribed. Such tunnels lack standardized escape route guidance in emergency situations, with potential safety hazards. The scheme comparison and optimization are insufficient, namely, a scheme of 'main hole + transverse channel + parallel channel' is recommended by new specifications aiming at a single-hole special tunnel, but comparison basis of multiple schemes is not provided from the full life cycle economy and escape and rescue efficiency dimension. Under certain conditions, there may be more cost effective or efficient alternatives. The terrain adaptability is limited, and the new specification prescribes that transverse channels connected with the ground are required to be additionally arranged when the terrain conditions allow. For tunnel sections with complex terrains and no grounding condition, the existing standard does not provide an alternative escape solution, so that the escape problem of drivers and passengers in such a scene is not solved effectively. In summary, the prior art has shortcomings in terms of economy, full coverage and scheme flexibility regarding the arrangement of the escape and rescue channel of the highway tunnel. Therefore, there is a need to develop a method for setting a highway tunnel escape route that can achieve the safety, rapidity and economy, so as to solve the above technical problems. Disclosure of Invention First, the technical problem to be solved The invention aims to solve the technical problems that the prior art has obvious defects in the aspects of economy (cost is increased due to the increase of the number of transverse channels), coverage (lack of regulation of a non-extra-long single-hole tunnel), scheme flexibility (lack of comparison selection), terrain adaptability (substitution scheme when the ground cannot be grounded) and the like. (II) technical scheme In order to solve the technical problems, on the one hand, the invention provides an economic rapid escape highway tunnel, the length L of which is more than 350m and does not have the condition of arranging a transverse escape passage, the highway tunnel comprises a tunnel positive hole structure and an attached escape passage arranged on one side of the tunnel positive hole structure, the tunnel positive hole structure and the attached escape passage are arrange