欢迎来到天天文库
浏览记录
ID:52012467
大小:3.02 MB
页数:8页
时间:2020-03-21
《自然泥石流与矿渣泥石流复合效应与防治对策.pdf》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、JournalofEngineeringGeology工程地质学报1004-9665/2014/22(5)092808DOI:10.13544/j.cnki.jeg.2014.05.023自然泥石流与矿渣泥石流复合效应与防治对策倪化勇郑万模宋志徐伟(成都地质矿产研究所成都610081)摘要石棉县后沟是一条典型的自然泥石流和矿渣泥石流并存的泥石流沟。本文以石棉后沟为例,结合早期自然泥石流、矿产开采以来矿渣泥石流、以及2013年7·4复合型泥石流,总结了自然泥石流和矿渣泥石流的复合效应,包括泥石流物源补给的多元效应、泥石流发展演化的逆转效应、泥石流起动发生的复杂效应、泥石流动力沿程的
2、放大效应、泥石流致灾破坏的链式效应。对照泥石流对已建防治工程的破坏,提出了自然泥石流和矿渣泥石流复合型泥石流沟防治对策,建议充分利用起动位置和物源集中补给位置的差异,加强对中上游及支沟自然泥石流起动和运动的拦挡防治,最大限度减小自然泥石流对下游矿渣防护工程的基底侵蚀和冲击破坏,从而保障综合防治工程的有效性。关键词自然泥石流矿山泥石流复合效应防治后沟中图分类号:P64223文献标识码:ASTUDYONCOMBINEDEFFECTOFNATURALDEBRISFLOWANDMINEDEBRISFLOWANDPREVENTIONCOUNTERMEASURESNIHuayongZHENGWa
3、nmoSONGZhiXUWei(ChengduInstituteofGeologyandMineralResources,ChinaGeologicalSurvey,Chengdu610081)AbstractTheHougullyinShimianCountyisatypicaldebrisflowgullywhereeithernaturaldebrisfloworminedebrisflowcanoccur.Thispaperisbasedontheinvestigationandanalysisonthedepositioncharacteristicsofformernat
4、uraldebrisflowsinhistory,minedebrisflowssinceexploitationofmineralresourceinrecentyearsandthecombineddebrisflowoccurredonJuly4,2013.Thecombinedeffectofnaturaldebrisflowandminedebrisflowissummarizedinthefollowingfiveaspects:(1)themultieffectofthesolidmaterialssupplyingfordebrisflow,(2)thereversal
5、effectsofdebrisflowdevelopmentandevolution,(3)thecomplexeffectindebrisflowinitiationandoccurrenceprocess,(4)theamplificationeffectindebrisflowdownstreamtransportingprocessand(5)thechaineffectduringdebrisflowdamagingprocess.Inaddition,preventioncountermeasuresareputforwardfortheHougullydebrisflow
6、attheendofthispaper.Itissuggestedthatthecontrolworksbuiltatthemiddlestreamfortheblockingofnaturaldebrisflowcanplaythekeyroletoensuretheeffectiveandcomprehensivepreventionandengineeringcontrolworksforpreventingtheminingslagsatthelowerstreamfromfailureandinitiation.KeywordsNaturaldebrisflow,Minede
7、brisflow,Combinedeffect,Debrisflowprevention,Hougully收稿日期:2014-06-03;收到修改稿日期:2014-07-09.基金项目:国家自然科学基金项目(41102226),科技基础性工作专项(2011FY1101001)资助.第一作者简介:倪化勇,男,副研究员,主要研究方向为泥石流灾害预测预报、评价与灾害地貌.Email:nihuayong@126.com22(5)倪化勇等:自然泥石流
此文档下载收益归作者所有