Method for determining railway space line position in karst mountainous area

A space and karst technology, applied in geometric CAD, special data processing applications, etc., can solve the problem of less theories and methods of railway disaster reduction and route selection, and achieve economical and rationality, reduce the cost of route selection, and save the survey construction period. Effect

Active Publication Date: 2020-09-22
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Problems solved by technology

[0003] At present, the route selection for disaster reduction of railway projects in karst mountainous areas is mainly based on actual engineering experience, and the line selection research is carried out from the plane distribution, spatial distribution and relationship between karst landforms and railway engineering, and from the characteristics of karst disasters and risk theory There are few theories and methods for disaster reduction and line selection of railways in karst mountainous areas

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  • Method for determining railway space line position in karst mountainous area
  • Method for determining railway space line position in karst mountainous area

Examples

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Embodiment

[0028] Take the determination of the railway space line position of the Shaziguan-Liangwu section and the Paihuadong Tunnel of Yuli Railway as an example.

[0029] The Shaziguan-Liangwu section of the Yuli Railway crosses the Qiyaoshan Mountains. The main geological problem controlling the line plan for this section is the karst and karst water in the Qiyaoshan anticline section. The line passes through the water-resisting boundary formed by the soluble rock strata in the core of the regional anticline and the non-dissolvable rock strata in the northwest wing, forming a complete karst hydrogeological unit. Since Liangwu is a karst depression with a low elevation, the line must be lowered as much as possible due to the slope limit of the tunnel. Due to the difference in discharge conditions, the elevations of the karst water discharge points on the two wings of the anticline differ by nearly 200m (the Northwest wing is represented by the Mancaodong Underground River at an eleva...

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Abstract

The invention discloses a method for determining a railway space line position in a karst mountainous area, and aims to enable a tunnel to integrally pass through a section with lower karst water gushing and mud bursting risks, effectively reduce railway engineering risks in the karst mountainous area, greatly reduce line selection cost and save investigation time limit. The method comprises the following steps: arranging a karst hydrodynamic profile along a karst slope in a direction perpendicular to a river; determining the highest underground water level line; determining a lowest underground water level line; dividing a karst vertical seepage zone, a karst seasonal variation zone and a karst horizontal flowing zone; through coordination and cooperation of spatial line position plane position adjustment and spatial line position longitudinal section position adjustment, enabling a railway tunnel to pass through a middle-low-risk karst vertical seepage zone, avoid a high-risk seasonal variation zone and an extremely-high-risk horizontal flowing zone, or form a herringbone slope surface in a preset tunnel.

Description

technical field [0001] The invention relates to a method for disaster reduction and line selection of a railway project in a karst mountainous area, in particular to a method for determining the space line position of a railway tunnel project based on karst water hazard zones. Background technique [0002] Disaster mitigation and route selection is a risk decision-making process under the condition of uncertain effects of natural disasters on the entire life cycle of the route project. The route selection of railway disaster reduction in complex karst areas is the risk decision-making process of route scheme and project setting under the condition of uncertain effects of karst disasters on the whole life cycle of railway projects. [0003] At present, the route selection for disaster reduction of railway projects in karst mountainous areas is mainly based on actual engineering experience, and the line selection research is carried out from the plane distribution, spatial dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13
CPCG06F30/13
Inventor 朱颖魏永幸陈明浩邱燕玲李光辉张广泽
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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