河海大学学报(自然科学版)
河海大學學報(自然科學版)
하해대학학보(자연과학판)
JOURNAL OF HOHAI UNIVERSITY (NATURAL SCIENCES)
2013年
4期
288-293
,共6页
刘佳嘉%周祖昊%贾仰文%王浩
劉佳嘉%週祖昊%賈仰文%王浩
류가가%주조호%가앙문%왕호
干支流拓扑关系%干支拓扑编码规则%子流域编码%继承式编码规则%渭河流域
榦支流拓撲關繫%榦支拓撲編碼規則%子流域編碼%繼承式編碼規則%渭河流域
간지류탁복관계%간지탁복편마규칙%자류역편마%계승식편마규칙%위하류역
stem-branch topological relationship%stem-branch topological codification%sub -watershed codification%inherited codification rule%weihe Basin
为实现子流域划分、编码过程中多汇流编码并达到加密无分叉河段的要求,提出一种新型的子流域编码规则---干支拓扑编码规则。它以河网干支流拓扑关系为基础,采用层次继承式编码规则,从流域出口逆流而上逐个对子流域进行编码。该编码规则能确保上游子流域编码始终包含下游编码信息,从而实现上下游拓扑关系运算。渭河流域应用实例表明,干支拓扑编码规则符合单向流不规则树状结构编码要求,能实现单枝结构、二叉结构以及多叉结构的拓扑编码。
為實現子流域劃分、編碼過程中多彙流編碼併達到加密無分扠河段的要求,提齣一種新型的子流域編碼規則---榦支拓撲編碼規則。它以河網榦支流拓撲關繫為基礎,採用層次繼承式編碼規則,從流域齣口逆流而上逐箇對子流域進行編碼。該編碼規則能確保上遊子流域編碼始終包含下遊編碼信息,從而實現上下遊拓撲關繫運算。渭河流域應用實例錶明,榦支拓撲編碼規則符閤單嚮流不規則樹狀結構編碼要求,能實現單枝結構、二扠結構以及多扠結構的拓撲編碼。
위실현자류역화분、편마과정중다회류편마병체도가밀무분차하단적요구,제출일충신형적자류역편마규칙---간지탁복편마규칙。타이하망간지류탁복관계위기출,채용층차계승식편마규칙,종류역출구역류이상축개대자류역진행편마。해편마규칙능학보상유자류역편마시종포함하유편마신식,종이실현상하유탁복관계운산。위하류역응용실례표명,간지탁복편마규칙부합단향류불규칙수상결구편마요구,능실현단지결구、이차결구이급다차결구적탁복편마。
A new rule for sub-watershed codification is put forward to realize sub-watershed division and multi-confluence codification and to split a non-bifurcated river into small parts .This rule, which is called stem-branch topological codification ( SBTC ) , is developed based on the stem-branch topological relationship of drainage networks .The SBTC codes the drainage networks from the river mouth to the source , and uses the hierarchical inheritance rule to reflect the upstream and downstream topological relationship .The application of the rule to the Weihe Basin shows that the SBTC is competent for the coding of anomaly-simulated dendritic drainage networks , which have one-way, two-way, and multi-way confluence situations.