成昆线北段泥石流危险性评价及数据库系统
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摘要
成昆铁路纵向穿越了四川西南部山区和滇北地区,所经之处多为高山峡谷,大江大河。沿线地形复杂,地势险峻,而且由于历次构造运动的强烈影响,地质情况非常复杂,致使沿线大部分地区存在崩塌落石、滑坡、泥石流等各种不良地质现象,被称作“地质博物馆”。
成昆铁路北段(峨眉至西昌)做为全国铁路泥石流灾害最为严重的区段之一,自通车以来,泥石流灾害多次发生,淤埋铁路和车站、冲毁桥涵、路基,几乎每年都要造成断道停车,严重影响了我国国民经济与社会的发展。
本文以成昆铁路北段有潜在危险的33条泥石流沟为研究对象,在广泛收集资料和野外调查的基础上,对研究区工程地质条件进行了概述,探究了成昆铁路北段泥石流灾害分布规律与发育特征。基于模糊集及粗糙集理论基础建立了危险性评价指标体系,制定了评价指标的分级标准及评价因子的权重。运用模糊综合评判法为沿线各泥石流沟对铁路的危险性做了评价。
考虑到成昆铁路泥石流沟数量多,数据庞大的特点,为便于泥石流数据管理,本文重点介绍了基于VB语言开发的成昆铁路泥石流灾害数据库系统,同时为了更快更便捷的对泥石流沟做出初步危险性评价,基于模糊综合评判法,在数据库系统中嵌入了泥石流危险性自动评价子系统。
本文对成昆线北段泥石流灾害进行了定性分析与定量研究,为铁路泥石流危险性评价的量化分析做出了积极贡献,并为铁路部门对成昆铁路大量泥石流沟数据的便捷管理和各泥石流沟危险性的快捷评价提出了新的计算机处理方法,为后续灾害治理提供了依据。研究成果可供灾害点数量较多的铁路或公路地质灾害调查与危险性评价做为参考。
Chengdu-Kunming Railway goes across the southeast of Sichuan and north of Yunnan vertically. Most part along the railway is alp, canyons and large revivers. Hence the terrain along this railway is complicated and rugged. Along with the influences of repeated tectonic movements, the geology is very complex, resulting in various hazardous geologic phenomena such as rock fall, landslide and debris flow. Thus this section is known as "Museum of Geology".
North Section of Chengdu-Kunming Railway (from Emei to Xichang), as the area with the most severe debris flow, has suffered many debris flow disasters since its operation, causing burying of railway and stations, destroying bridges and culverts, and roadbed, almost every year, the railway will be broken and cease its service, which influence the national economy and social development severely.
Taking the 33 hazardous debris flow cloughs on the north section of Chengdu-Kunming Railway as the research object, based on wide information collection and field investigation, this paper summarizes the geological conditions in the target area, and explores the distribution law and development features of debris flow on the north section of Chengdu-Kunming Railway. Moreover, it establishes Index System of Comprehensive hazard Evaluation, grade criteria of evaluation indices and the weight of the evaluation factors based on fuzzy rough set theory. The hazard of each debris flow along the railway is evaluated by using fuzzy comprehensive evaluation method.
Giving consideration to the large quantity and huge data of the debris flow at the north section of Chengdu-Kunming Railway, for the convenience of debris flow data management, this paper particularly focuses on introduction of database of debris flow along Chengdu-Kunming Railway which is developed based on VB. At the same time, in order to make preliminary judgment on the hazard of the debris flow more quickly and conveniently, an automatic evaluation sub-system of debris flow hazard is inlaid in the database system based on fuzzy comprehensive evaluation.
This paper offers a quantitative and qualitative research on the debris flow on the north section of Chengdu-Kunming Railway, which contributes positively to the quantitative analysis of railway debris flow hazard evaluation, provides new computation methods for huge data management of debris flow cloughs along Chengdu-Kunming Railway as well as the fast evaluation of each debris flow clough, and affords basis for future disaster management to the railway sector. Furthermore, the research result can also serve as reference for geological disaster investigation and hazard evaluation of other railways or highways which show frequent disaster occurrences.
成昆铁路北段(峨眉至西昌)做为全国铁路泥石流灾害最为严重的区段之一,自通车以来,泥石流灾害多次发生,淤埋铁路和车站、冲毁桥涵、路基,几乎每年都要造成断道停车,严重影响了我国国民经济与社会的发展。
本文以成昆铁路北段有潜在危险的33条泥石流沟为研究对象,在广泛收集资料和野外调查的基础上,对研究区工程地质条件进行了概述,探究了成昆铁路北段泥石流灾害分布规律与发育特征。基于模糊集及粗糙集理论基础建立了危险性评价指标体系,制定了评价指标的分级标准及评价因子的权重。运用模糊综合评判法为沿线各泥石流沟对铁路的危险性做了评价。
考虑到成昆铁路泥石流沟数量多,数据庞大的特点,为便于泥石流数据管理,本文重点介绍了基于VB语言开发的成昆铁路泥石流灾害数据库系统,同时为了更快更便捷的对泥石流沟做出初步危险性评价,基于模糊综合评判法,在数据库系统中嵌入了泥石流危险性自动评价子系统。
本文对成昆线北段泥石流灾害进行了定性分析与定量研究,为铁路泥石流危险性评价的量化分析做出了积极贡献,并为铁路部门对成昆铁路大量泥石流沟数据的便捷管理和各泥石流沟危险性的快捷评价提出了新的计算机处理方法,为后续灾害治理提供了依据。研究成果可供灾害点数量较多的铁路或公路地质灾害调查与危险性评价做为参考。
Chengdu-Kunming Railway goes across the southeast of Sichuan and north of Yunnan vertically. Most part along the railway is alp, canyons and large revivers. Hence the terrain along this railway is complicated and rugged. Along with the influences of repeated tectonic movements, the geology is very complex, resulting in various hazardous geologic phenomena such as rock fall, landslide and debris flow. Thus this section is known as "Museum of Geology".
North Section of Chengdu-Kunming Railway (from Emei to Xichang), as the area with the most severe debris flow, has suffered many debris flow disasters since its operation, causing burying of railway and stations, destroying bridges and culverts, and roadbed, almost every year, the railway will be broken and cease its service, which influence the national economy and social development severely.
Taking the 33 hazardous debris flow cloughs on the north section of Chengdu-Kunming Railway as the research object, based on wide information collection and field investigation, this paper summarizes the geological conditions in the target area, and explores the distribution law and development features of debris flow on the north section of Chengdu-Kunming Railway. Moreover, it establishes Index System of Comprehensive hazard Evaluation, grade criteria of evaluation indices and the weight of the evaluation factors based on fuzzy rough set theory. The hazard of each debris flow along the railway is evaluated by using fuzzy comprehensive evaluation method.
Giving consideration to the large quantity and huge data of the debris flow at the north section of Chengdu-Kunming Railway, for the convenience of debris flow data management, this paper particularly focuses on introduction of database of debris flow along Chengdu-Kunming Railway which is developed based on VB. At the same time, in order to make preliminary judgment on the hazard of the debris flow more quickly and conveniently, an automatic evaluation sub-system of debris flow hazard is inlaid in the database system based on fuzzy comprehensive evaluation.
This paper offers a quantitative and qualitative research on the debris flow on the north section of Chengdu-Kunming Railway, which contributes positively to the quantitative analysis of railway debris flow hazard evaluation, provides new computation methods for huge data management of debris flow cloughs along Chengdu-Kunming Railway as well as the fast evaluation of each debris flow clough, and affords basis for future disaster management to the railway sector. Furthermore, the research result can also serve as reference for geological disaster investigation and hazard evaluation of other railways or highways which show frequent disaster occurrences.
引文
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[15]艾南山,张林源,咎廷全.泥石流活动性的一种判别方法[J].铁道工程学报,1986(4)：56-59
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[20]刘丽,王士革.滑坡、泥石流区域危险度二级模糊综合评判初探[J].自然灾害学报,1996,5(3)：51-59
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[25]胡宝清.模糊理论基础[M],武汉大学出版社,2010：1-2
[26]宋晓秋.模糊数学原理及方法[M],中国矿业大学出版社,2004：201-208
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