川藏铁路泸定至康定段日地沟泥石流危害性分析及防治对策
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- 英文论文题名：The Hazard Damages and Mitigation Measures of Debris Flow in Ridi Gully in the Luding-Kangding Section of Sichuan-Tibet Railway
- 论文作者：柳金峰 ; 游勇 ; 蒋良文 ; 张广泽 ; 王栋 ; 苏凤环 ; 苏鹏程
- 英文论文作者：Liu Jinfeng ; You Yong ; Jiang Liangwen ; Zhang Guangze ; Wang Dong ; Su Fenghuan ; Su Pengcheng ; Key Laboratory of Mountain Hazards and Earth Surface Process ; Chinese Academy of Sciences ; Institute of Mountain Hazards and Environment ; Chinese Academy of Sciences ; China Railway Eryuan Engineering Group Co.Ltd
- 年：2016
- 作者机构：中国科学院山地灾害与地表过程重点实验室;中国科学院水利部成都山地灾害与环境研究所;中铁二院工程集团有限责任公司;
- 论文关键词：川藏铁路 ; 泸定—康定段 ; 日地沟 ; 泥石流 ; 防治对策
- 英文论文关键词：Sichuan-Tibet railway ; Luding-Kangding section ; Ridi gully ; debris flow ; mitigation measures
- 会议召开时间：2016-10-14
- 会议录名称：“川藏铁路建设的挑战与对策”2016学术交流会论文集
- 语种：中文
- 分类号：P642.23;U213.15;U443.8
- 学会代码：ZGTD
- 会议名称：“川藏铁路建设的挑战与对策”2016学术交流会
- 会议地点：中国四川成都
- 主办单位：中国铁道学会、中国铁道学会工程分会、中国中铁股份有限公司、中铁二院工程集团有限责任公司
- 学会名称：中国铁道学会
- 页数：11
- 文件大小：1984k
- 原文格式：O
- 会议级别：全国
摘要
川藏铁路泸定至康定段走线需要穿越康定县姑咱镇的日地沟,该沟泥石流活动性较强,成为该段铁路选线的关键节点。采用野外考察、室内运动特征参数计算等手段,分析了日地沟泥石流形成的环境背景条件,计算了泥石流峰值流量、流速、一次泥石流冲出量、冲击力等关键运动特征参数。在此基础上,结合铁路走线位置、桥梁净空等空间位置与泥石流危害范围的关系,定量评估了泥石流对铁路的影响。最后,提出了保障铁路安全的泥石流防灾对策与措施。通过估算,日地沟泥石流的重度取值在1.9~2.2 t/m~3之间,百年一遇设计标准下(P=1%),日地沟主沟沟口泥石流峰值流量为607.8m~3/s、一次最大冲出量为86.6×10~4m~3,泥石流流速6.6m/s。计算结果显示:在日地沟铁路跨沟桥梁断面处,100年一遇频率条件下泥石流最大泥深为8.3m,达到桥下净高近1/2(根据走线方案,桥下净空为18m),其对桥梁的影响较小,但对设置在沟道中部的桥墩冲击危害较大。根据特征参数计算及模拟结果,提出了日地沟泥石流防治采用"铁路拱桥一桥跨过+铁路桥上游缝隙坝拦挡+铁路桥下防护及排导"相结合的方案。
The railway line of the Luding-Kangding Section of Sichuan-Tibet Railway passes through the Ridi Gully which is located in the Guza Town of Kangding County,Sichuan Province.The debris flow in the gully was very active and developed.The gully becomes one of the key points for the railway alignment.By taking the Ridi Gully as studying object,we introduced the formation environment conditions and debris flow history based on field investigation.Then,some dynamic parameters including the flood peak discharge,debris flow peak discharge,velocity,total volume of a single debris flow event and impact force were calculated.Based on these results,we evaluated the influence of debris flow to the railway quantificationally and proposed the mitigation measure for preventing debris flow.Through calculation,the debris flow density is between 1.9t/m~3 and2.2t/m~3.The debris flow peak discharge is 607.8m~3/s,the total volume for a single debris flow is 86.6×10~4m~3,corresponding debris flow velocity is 6.6m/s and flow depth at the railway bridge is about 8.3 m(18 m of underneath clearance)for the case of P=1%.Therefore,the debris flow damage to the railway bridge is small.However,the damage is very big to the bridge pier set in the middle channel.Finally,an integrated mitigation measure including passing the channel by using arch bridge,setting 2 check dams upstream of the bridge,and setting a drainage channel downstream of the bridge is proposed.
The railway line of the Luding-Kangding Section of Sichuan-Tibet Railway passes through the Ridi Gully which is located in the Guza Town of Kangding County,Sichuan Province.The debris flow in the gully was very active and developed.The gully becomes one of the key points for the railway alignment.By taking the Ridi Gully as studying object,we introduced the formation environment conditions and debris flow history based on field investigation.Then,some dynamic parameters including the flood peak discharge,debris flow peak discharge,velocity,total volume of a single debris flow event and impact force were calculated.Based on these results,we evaluated the influence of debris flow to the railway quantificationally and proposed the mitigation measure for preventing debris flow.Through calculation,the debris flow density is between 1.9t/m~3 and2.2t/m~3.The debris flow peak discharge is 607.8m~3/s,the total volume for a single debris flow is 86.6×10~4m~3,corresponding debris flow velocity is 6.6m/s and flow depth at the railway bridge is about 8.3 m(18 m of underneath clearance)for the case of P=1%.Therefore,the debris flow damage to the railway bridge is small.However,the damage is very big to the bridge pier set in the middle channel.Finally,an integrated mitigation measure including passing the channel by using arch bridge,setting 2 check dams upstream of the bridge,and setting a drainage channel downstream of the bridge is proposed.
引文
[1]陈富斌.横断山系新构造研究[M].成都:成都地图出版社,1992.42.Chen Fubin.Study of neotectonics in Hengduan Mountains[M].Chengdu:Chengdu Cartographic Publishing House,1992.42.
[2]谢洪,钟敦伦,王士革,等,1995年康定城区洪灾成因分析[J].山地研究,1997,15(2):129-131.Xie Hong,Zhong Dunlun,Wang Shige,et al.Flood causes in town proper of Kangding in 1995[J].Mountain Research,1997,15(2):129-131.
[3]胡桂胜,陈宁生.游勇,等.“7·10”连山大桥泥石流运动特征与沟道堵溃分析[J].成都理工大学学报(自然科学版),2015,42(6):641-648.Hu Guisheng,Chen Ningsheng,You Yong,et al.Analysis of dynamic characteristic parameters and block and burst characteristics of Lianshan bridge debris flow in Wechuan,Sichuan on July 10,2013.[J].Journal of Chengdu University of Technology(Science&Technology Edition,2015,42(6):641-648.
[4]四川省水利电力厅.四川省中小流域暴雨洪水计算手册[M].1984.Sichuan Provincial Water Resources Department.The rainstorm-flood calculation manual for middle and small catchment in Sichuan Province[M].1984.
[5]四川省水文水资源勘测局.四川省暴雨统计参数图集[M].2010.Hydrology and Water Resources Survey Bureau of Sichuan Province.Maps of statistical parameters of rainstorm in Sichuan Province[M].2010.
[6]周必凡,李德基,罗德富,等.泥石流防治指南[M].北京:科学出版社,1991:92-93.Zhou Bifan,Li Deji,Luo Defu,et al.Guide to prevention of debris flow[M].Beijing:Science Press,1991:92-93.
[7]程尊兰,刘雷激,游勇.西藏古乡沟泥石流流速[J].山地研究,1997,15(4):293-295.Cheng Zunlan,Liu Leiji,You Yong.Debris flow velocity of Guxiang Gully in Tibet[J].Mountian Research,1997,15(4):293-295.
[8]吴积善。田连权,康志成,等.泥石流及其综合治理[M].北京:科学出版社,1993.Wu Zhishan,Tian Lianquan,Kang Zhicheng,et al.Debris flow and its comprehensive control[M].Beijing:Science Press,1993:164-165.
[9]中华人民共和国国土资源部.DZ/T 0220—2006泥石流灾害防治工程勘查规范[S].北京:中国标准出版社,2006.Ministry of Land and Resources of the People's Republic of China.DZ/T 0220—2006 Specification of geological investigation for debris flow stabilization[S].Beijing:Chinese Specification Press,2006.
[10]赵万玉,陈晓清,游勇,等.一种泥石流拦砂坝:中国,ZL 2015 2 0394800.6[P].2015-06-09.Zhao Wanyu,Chen Xiaoqing,You Yong et al.Akind of debris flow check dam:China,ZL 2015 2 0394800.6[P].2015-06-09.
[11]刘曙亮.泥石流软基消能排导槽肋槛布置及冲刷特性实验研究[D].中国科学院大学,2015.Liu Shuliang.Experimental study on decorate and scouring characteristics of debris flow drainage channel[D].University of Chinese Academy of Sciences,2015.
[2]谢洪,钟敦伦,王士革,等,1995年康定城区洪灾成因分析[J].山地研究,1997,15(2):129-131.Xie Hong,Zhong Dunlun,Wang Shige,et al.Flood causes in town proper of Kangding in 1995[J].Mountain Research,1997,15(2):129-131.
[3]胡桂胜,陈宁生.游勇,等.“7·10”连山大桥泥石流运动特征与沟道堵溃分析[J].成都理工大学学报(自然科学版),2015,42(6):641-648.Hu Guisheng,Chen Ningsheng,You Yong,et al.Analysis of dynamic characteristic parameters and block and burst characteristics of Lianshan bridge debris flow in Wechuan,Sichuan on July 10,2013.[J].Journal of Chengdu University of Technology(Science&Technology Edition,2015,42(6):641-648.
[4]四川省水利电力厅.四川省中小流域暴雨洪水计算手册[M].1984.Sichuan Provincial Water Resources Department.The rainstorm-flood calculation manual for middle and small catchment in Sichuan Province[M].1984.
[5]四川省水文水资源勘测局.四川省暴雨统计参数图集[M].2010.Hydrology and Water Resources Survey Bureau of Sichuan Province.Maps of statistical parameters of rainstorm in Sichuan Province[M].2010.
[6]周必凡,李德基,罗德富,等.泥石流防治指南[M].北京:科学出版社,1991:92-93.Zhou Bifan,Li Deji,Luo Defu,et al.Guide to prevention of debris flow[M].Beijing:Science Press,1991:92-93.
[7]程尊兰,刘雷激,游勇.西藏古乡沟泥石流流速[J].山地研究,1997,15(4):293-295.Cheng Zunlan,Liu Leiji,You Yong.Debris flow velocity of Guxiang Gully in Tibet[J].Mountian Research,1997,15(4):293-295.
[8]吴积善。田连权,康志成,等.泥石流及其综合治理[M].北京:科学出版社,1993.Wu Zhishan,Tian Lianquan,Kang Zhicheng,et al.Debris flow and its comprehensive control[M].Beijing:Science Press,1993:164-165.
[9]中华人民共和国国土资源部.DZ/T 0220—2006泥石流灾害防治工程勘查规范[S].北京:中国标准出版社,2006.Ministry of Land and Resources of the People's Republic of China.DZ/T 0220—2006 Specification of geological investigation for debris flow stabilization[S].Beijing:Chinese Specification Press,2006.
[10]赵万玉,陈晓清,游勇,等.一种泥石流拦砂坝:中国,ZL 2015 2 0394800.6[P].2015-06-09.Zhao Wanyu,Chen Xiaoqing,You Yong et al.Akind of debris flow check dam:China,ZL 2015 2 0394800.6[P].2015-06-09.
[11]刘曙亮.泥石流软基消能排导槽肋槛布置及冲刷特性实验研究[D].中国科学院大学,2015.Liu Shuliang.Experimental study on decorate and scouring characteristics of debris flow drainage channel[D].University of Chinese Academy of Sciences,2015.