南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2013年
z1期
79-82
,共4页
地震%三叉沟%暴雨泥石流%物源%活动方式%洪水冲刷%裹挟%防治措施
地震%三扠溝%暴雨泥石流%物源%活動方式%洪水遲刷%裹挾%防治措施
지진%삼차구%폭우니석류%물원%활동방식%홍수충쇄%과협%방치조시
earthquake%Sanchagou%rainstorm debris flow%material%activity pattern%flood erosion and hold%prevention measures
5?12汶川地震后泥石流具有爆发突然，侵蚀、搬运、堆积和冲击能力大，破坏力强等特点。现以四川省安县高川乡三叉沟泥石流为例，研究其物源及其分布和活动方式，通过对震后暴雨诱发的三叉沟泥石流灾害调查、测绘和分析，得出以下结论：震后暴雨泥石流的物源总量巨大，主要以5?12汶川地震触发的崩滑堆积物源为主，其单个物源量大，稳定性差，可参与泥石流活动的动储量也很大；其活动方式主要以暴雨洪水冲刷和裹挟为主。针对震后暴雨泥石流的典型特点，这类泥石流治理采用以“稳、固”为主，“拦、排”为辅相结合的治理思路，这对灾后防治、灾后保护区的重建和保护人民的生命财产具有重要的借鉴意义。
5?12汶川地震後泥石流具有爆髮突然，侵蝕、搬運、堆積和遲擊能力大，破壞力彊等特點。現以四川省安縣高川鄉三扠溝泥石流為例，研究其物源及其分佈和活動方式，通過對震後暴雨誘髮的三扠溝泥石流災害調查、測繪和分析，得齣以下結論：震後暴雨泥石流的物源總量巨大，主要以5?12汶川地震觸髮的崩滑堆積物源為主，其單箇物源量大，穩定性差，可參與泥石流活動的動儲量也很大；其活動方式主要以暴雨洪水遲刷和裹挾為主。針對震後暴雨泥石流的典型特點，這類泥石流治理採用以“穩、固”為主，“攔、排”為輔相結閤的治理思路，這對災後防治、災後保護區的重建和保護人民的生命財產具有重要的藉鑒意義。
5?12문천지진후니석류구유폭발돌연，침식、반운、퇴적화충격능력대，파배력강등특점。현이사천성안현고천향삼차구니석류위례，연구기물원급기분포화활동방식，통과대진후폭우유발적삼차구니석류재해조사、측회화분석，득출이하결론：진후폭우니석류적물원총량거대，주요이5?12문천지진촉발적붕활퇴적물원위주，기단개물원량대，은정성차，가삼여니석류활동적동저량야흔대；기활동방식주요이폭우홍수충쇄화과협위주。침대진후폭우니석류적전형특점，저류니석류치리채용이“은、고”위주，“란、배”위보상결합적치리사로，저대재후방치、재후보호구적중건화보호인민적생명재산구유중요적차감의의。
ThedebrisflowafterWenchuanearthquakein12ndMayischaracterizedbysuddenlybreakout,largecapacityoferosion,transporta-tion, accumulation and impaction, and great damage. T he provenance, distribution and activity pattern of debris flow in Sanchagou located in Gao-chuan village An county, Sichuan province, are analysed based on the investigation and measurement of debris flow disaster triggered by rain-storm.Severalresultsareobtained:thetotalprovenanceofrainstormdebrisflow isgreatafterearthquake,andismainlycomposedofaccumula-tion material piled from collapsing and sliding which were triggered by Wenchuan earthquake. In the meantime, it has the characteristics of large singleprovenance,poorstability,andgreatreservestoparticipateinactivitiesofdebrisflow,andthemainactivitypatternarerainstormfloode-rosion and hold. Accordingly, stabilizing and solidifying assisted by interception and discharge should be carried out to control this type of debris flow, and it has great significance for the preventing and reconstruction after disaster to protect life and property.
