發(fā)布時間：2018-01-09 23:22

  本文關(guān)鍵詞：金沙江上游快速隆升河段復雜結(jié)構(gòu)巖體災變特征與機理　出處：《吉林大學學報(地球科學版)》2016年04期 　論文類型：期刊論文

  更多相關(guān)文章： 快速隆升河段 復雜結(jié)構(gòu)巖體 堵江殘體 潛災體 金沙江上游

【摘要】：橫斷山脈北麓金沙江上游河段溝壑縱橫,水能資源豐富。中、晚更新世以來,快速隆升的新構(gòu)造活動導致該河段復雜結(jié)構(gòu)巖體在重力場的持續(xù)作用下災變頻繁。筆者闡述了該河段高地應(yīng)力的基礎(chǔ)地質(zhì)背景與金沙江板塊構(gòu)造結(jié)合帶蛇綠巖套的復雜結(jié)構(gòu)巖體基本特征,提出了快速隆升河段的基本認知,建議將≥5mm/a作為快速隆升河段的界限值;列舉了21.4km河段內(nèi)不同時期、不同類型4處大規(guī)模堵江事件的證據(jù)和基本特征,闡述了其與快速隆升之間的關(guān)系;運用地質(zhì)過程機制法分析了4個堵江體的致災機理,指出早期堵江殘體為未來人類工程活動的潛災體。
[Abstract]:The upper reaches of Jinsha River in the northern foothills of Hengduan Mountains are rich in water energy resources since the late Pleistocene. The rapid uplift of the new tectonic activity leads to frequent disasters of the complex structural rock mass in the reach under the continuous action of gravity field. The basic geological background of the high geostress in the reach and the ophiolite suite in the Jinshajiang plate tectonics combination zone are expounded in this paper. The basic characteristics of rock mass with complex structure based on. The basic cognition of the rapid uplift reach is put forward, and it is suggested that 鈮，

本文編號：1402958