大瑞铁路保山至瑞丽段及邻区地壳稳定性定量评价

郭长宝; 张永双; 屈科; 熊探宇; 付晓晓; 杜宇本

大瑞铁路保山至瑞丽段及邻区地壳稳定性定量评价

郭长宝^{1, 2,},
张永双^{1, 2},
屈科³,
熊探宇^{1, 2},
付晓晓¹,
杜宇本³

1.
中国地质科学院地质力学研究所, 北京 100081
2.
国土资源部新构造运动与地质灾害重点实验室, 北京 100081
3.
中铁二院工程集团有限责任公司, 成都 610031

基金项目:

“十二五”科技支撑计划课题 2011BAK12B09

“十二五”科技支撑计划课题 2012BAK10B02

科技基础性工作专项 2011FY110102

铁道部科技研究开发计划项目 2008G027-B

详细信息

作者简介:
郭长宝（1980-），男，博士，地质工程专业，工程师，主要从事工程地质与地质灾害方面的研究。E-mail：guochangbao@163.com

中图分类号: P553
计量
- 文章访问数: 170
- HTML全文浏览量: 80
- PDF下载量: 24
- 被引次数: 0
出版历程
- 收稿日期: 2013-11-12
- 刊出日期: 2014-03-01

QUANTITATIVE EVALUATION OF CRUSTAL STABILITY ALONG THE BAOSHAN-RUILI SECTION OF DALI-RUILI RAILWAY AND ITS ADJACENT REGION

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
Key Laboratory of Neotectonic Movement and Geohazard, Ministry of Land and Resources, Beijing 100081, China
3.
China Railway Eryuan Engineering Group Co. Ltd., Chengdu 610031, China

摘要

摘要: 大瑞铁路地处印度板块与欧亚板块碰撞带附近，地质构造条件复杂，活动断裂、高地应力、高地温、深埋隧道岩爆、软岩大变形等与地壳稳定性相关的地质问题严重制约着铁路工程规划建设。通过对大瑞铁路保山—瑞丽段及邻区地质背景、新构造活动、地壳隆升速率、潜在震源区、构造应力场、岩土体工程地质特征、地质灾害特征等因子分析，采用基于GIS的层次分析法，按照稳定、较稳定、较不稳定和不稳定4个等级，对大瑞铁路保山至瑞丽段及邻区的地壳稳定性进行了综合评价，将其划分为88个区；推荐线路C12K方案穿越19个地壳稳定性分区，其中不稳定分区占全线长度的9.79%，较不稳定分区占46.70%，较稳定分区占36.70%，稳定分区占6.81%。地壳稳定性评价结果对于指导铁路规划建设和线路优化具有重要的意义。
- 大瑞铁路 /
- 高黎贡山 /
- 活动断裂 /
- 地壳稳定性 /
- 铁路选线
Abstract: The Dali-Ruili Railway is located near the India and Eurasian plate's collision belt, where the geologic structure conditions are very complicated. The railway planning and constructions are restricted by the complex engineering geological problems related to the crustal stability, such as active fault, high geo-stress, rock burst of deep tunnel, large deformation of soft rock. This paper make the crustal stability zoning assessment on the basis of crustal stability influencing factors analysis, including the geological background, new tectonic movement, crust uplift rates, potential seismic source area analysis, tectonic stress field, engineering geological characteristics of rock and soil mass, as well as the geological hazards characteristics. The AHP method based on GIS was used in the analyzing process. As a result, the crustal stability is divided into 4 grades: stable area, relatively-stable area, relatively unstable area and unstable area. 88 zoning sections are made along the Baoshan-Ruili section of Dali-Ruili Railway and its adjacent region. According to the zoning result, there are 19 crustal stability zoning sections along the recommended C12K scheme, including 9.79% of unstable area, 46.71% of relatively unstable area, 36.7% of relatively-stable area, and 6.18% of stable area. The regional crustal stability assessments have some important significance for the railway construction and line optimization.
- Dali-Ruili railway /
- Mt. Gaoligong /
- active faults /
- regional crustal stability /
- railway location research

HTML全文

图 1 大瑞铁路保山至瑞丽段及邻区主要活动断裂及地震等震线分布

Figure 1. Drstribution of the main active faults and isoseismal in Gaoligong Mt. section along Dali-Ruili railway

下载: 全尺寸图片幻灯片

图 2 大瑞铁路保山至瑞丽段典型工程地质问题与地质灾害特征

Figure 2. Typical engineering geological problems and geo-hazard characteristics along Dali-Ruili railway

下载: 全尺寸图片幻灯片

图 3 大瑞铁路保山至瑞丽段及邻区地壳稳定性评价

Figure 3. Crustal stability zoning thematic maps of the study area

下载: 全尺寸图片幻灯片

图 4 基于GIS层次分析法的地壳稳定性评价框图

Figure 4. Flow diagram of crust stability evaluation by Analytical Hierarchy Process based on GIS

下载: 全尺寸图片幻灯片

图 5 大瑞铁路保山至瑞丽段地壳稳定性分区评价层次分析模型

Figure 5. The AHP model of the crust stability zoning for the study area

下载: 全尺寸图片幻灯片

图 6 大瑞铁路保山至瑞丽段及邻区地壳稳定性综合分区图

Figure 6. Crust stability zoning map of the study area

下载: 全尺寸图片幻灯片

表 1 大瑞铁路保山至瑞丽段及邻区地壳稳定性评价指标及权重分配表

Table 1. Calculated results of the weight of crust stability evaluation index for the study area

一级评价指标		二级评价因素
评价指标	权重值	二级单因素评价指标	比重/%	权值
活动断裂	0.18	极强影响区	33	0.060
		强影响区	23	0.040
		中等影响区	19	0.035
		较弱影响区	14	0.025
		弱影响区	11	0.020
潜在震源区	0.15	震级上限7.5级	35	0.053
		震级上限7.0级	30	0.045
		震级上限6.5级	20	0.030
		震级上限小于6.5级	15	0.023
构造应力场	0.20	地应力积聚高值区(S_xy≥15 MPa)	30	0.060
		地应力积聚较高值区(10≤S_xy＜15 MPa)	27	0.055
		地应力积中等区(5≤S_xy＜10 MPa)	23	0.045
		地应力积聚低值区(S_xy＜5 MPa)	20	0.040
地形变场	0.10	高值区(v≥9 mm/a)	40	0.040
		中值区(7≤v＜9 mm/a)	30	0.030
		低值区(6≤v＜7 mm/a)	20	0.020
		极低值区(v＜6 mm/a)	10	0.010
大地热流场	0.15	高值区(T≥60 ℃)	33	0.050
		中值区(40°≤T＜60 ℃)	30	0.045
		低值区(30°≤T＜40 ℃)	23	0.035
		极低值区(T＜30 ℃)	14	0.020
工程地质岩组	0.10	工程性质好	15	0.015
		工程性质较好	20	0.020
		工程性质中等	30	0.030
		工程性质差	35	0.035
地质灾害	0.12	极高发育区	37	0.045
		高发育区	25	0.030
		中等发育区	23	0.027
		低发育区	15	0.018
权值总计	1.00			1.00

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