本文選題：巖溶流域 + 非閉合特性�。� 參考：《水利學(xué)報(bào)》2017年04期

【摘要】：巖溶地區(qū)通常發(fā)育有大量巖溶裂隙、管道和洞穴,構(gòu)成錯(cuò)綜復(fù)雜的地下輸水網(wǎng)絡(luò),形成了獨(dú)特的流域水循環(huán)模式。地下巖溶構(gòu)造的存在會(huì)造成地下分水嶺與地表分水嶺的不重合,流域趨于非閉合狀態(tài)。為了弄清巖溶流域非閉合特性對(duì)水文過程模擬的影響,本文以桂林巖溶地區(qū)潮田河(漓江支流)流域?yàn)檠芯繀^(qū)域,采用三水源新安江模型模擬該地區(qū)多年降雨徑流過程。通過比較幾組給定流域面積的模擬結(jié)果,分析了流域計(jì)算面積選取對(duì)潮田河流域水文模擬結(jié)果精度的影響,并探討了流域非閉合特性影響下該地區(qū)的水體流動(dòng)模式。研究結(jié)果表明:模型率定時(shí),當(dāng)流域計(jì)算面積由340 km~2變化至460 km~2時(shí),NSE先增大后減小,RE值持續(xù)增大,兩者在380~390 km~2時(shí)可同時(shí)達(dá)到最優(yōu);結(jié)合不同時(shí)間尺度下徑流模擬精度的分析結(jié)果,給出了合理的流域計(jì)算面積,比基于地表分水嶺提取的流域面積約小8.9%~11.2%,故部分水量可能通過地下巖溶構(gòu)造流向鄰近流域。合理的流域計(jì)算面積對(duì)潮田河流域徑流模擬精度提高顯著,尤其是提升了枯季徑流的模擬。
[Abstract]:A large number of karst fissures, pipelines and caves are usually developed in karst areas, which form a complicated underground water conveyance network and form a unique watershed water circulation model. The existence of underground karst structure will cause the discontinuity between underground watershed and surface watershed, and the watershed tends to be unclosed. In order to understand the influence of non-closed characteristics of karst watershed on hydrological process simulation, this paper takes the Chaotian River (Lijiang River tributary) basin in Guilin karst area as the research area, and adopts the Xinan River model with three sources of water to simulate the rainfall runoff process in this area for many years. By comparing the simulation results of several groups of given watershed areas, this paper analyzes the influence of the selection of watershed calculated area on the accuracy of hydrological simulation results of Chaotian River Basin, and probes into the water flow model in this area under the influence of the non-closed characteristics of the basin. The results show that when the calculated area of the watershed changes from 340 km~2 to 460 km ~ 2, the RE value of the model increases first and then decreases continuously, and the two reach the optimal value at 380 ~ 390km2 at the same time. Combined with the analysis results of runoff simulation accuracy at different time scales, a reasonable calculated watershed area is given, which is about 8.9% or 11.2% smaller than the watershed area extracted from the surface watershed, so part of the water quantity may flow to the adjacent watershed through underground karst structure. Reasonable area of river basin can improve the precision of runoff simulation in Chaotian river basin, especially in dry season.
【作者單位】： 同濟(jì)大學(xué)土木工程學(xué)院水利工程系;長(zhǎng)江水環(huán)境教育部重點(diǎn)實(shí)驗(yàn)室;廣西壯族自治區(qū)桂林市水文水資源局;
【基金】：水利部公益性項(xiàng)目(201401057) 教育部留學(xué)回國(guó)人員科研啟動(dòng)基金(2013-1792)
【分類號(hào)】：P641.134

【相似文獻(xiàn)】

相關(guān)期刊論文 前3條

1 吳錦奎;楊淇越;葉柏生;丁永建;魏智;;同位素技術(shù)在流域水文研究中的重要進(jìn)展[J];冰川凍土;2008年06期

2 陳剛;張興奇;李滿春;;MIKE BASIN支持下的流域水文建模與水資源管理分析——以西藏達(dá)孜縣為例[J];地球信息科學(xué);2008年02期

3 ;[J];;年期

相關(guān)重要報(bào)紙文章 前1條

1 劉蘭寧 楊敏;重慶重點(diǎn)巖溶流域水文環(huán)境調(diào)查完成[N];中國(guó)國(guó)土資源報(bào);2014年

相關(guān)碩士學(xué)位論文 前3條

1 許慧萍;考慮季節(jié)性凍土的黃河源區(qū)流域水文TANK模型[D];中國(guó)地質(zhì)大學(xué)（北京）;2009年

2 富飛;石羊河流域水文生態(tài)特征及治理規(guī)劃研究[D];長(zhǎng)安大學(xué);2012年

3 張紅波;桂江流域水化學(xué)與巖溶碳匯動(dòng)態(tài)變化特征[D];西南大學(xué);2013年

，

本文編號(hào)：1862958