【摘要】：預(yù)警指標(biāo)對(duì)流域的山洪預(yù)警有著重要的作用。主要以榮成市嶗山小流域嶗山大疃為例,提出了確定雨量預(yù)警指標(biāo)的方法。根據(jù)不同的土壤干濕程度,基于降雨徑流曲線獲得降雨徑流關(guān)系,采用推理公式法計(jì)算設(shè)計(jì)洪水,繪制降雨洪峰曲線;根據(jù)嶗山大疃現(xiàn)場(chǎng)調(diào)查,基于曼寧公式獲取水位流量關(guān)系曲線,結(jié)合成災(zāi)水位推算臨界流量,根據(jù)降雨洪峰曲線,由流量反推降雨。計(jì)算結(jié)果:在Pa=40 mm的情況下,嶗山大疃的3個(gè)時(shí)段的臨界雨量為62 mm,75 mm,95 mm,經(jīng)過(guò)"折減"處理獲得的3個(gè)時(shí)段預(yù)警指標(biāo),準(zhǔn)備轉(zhuǎn)移指標(biāo)為56,68,86mm,立即轉(zhuǎn)移指標(biāo)為68,83,105 mm。
[Abstract]:Early warning index plays an important role in the early warning of mountain torrents. Taking Datuan of Laoshan Mountain in Rongcheng City as an example, the method of determining rainfall early warning index is put forward. According to different degree of soil dry and wet, rainfall-runoff relationship was obtained based on rainfall-runoff curve, design flood was calculated by reasoning formula method, and rainfall Hong Feng curve was drawn. According to the field investigation of Datuan in Laoshan Mountain, the relationship curve of water level and discharge is obtained based on Manning formula, and the critical discharge is calculated in combination with the flood water level. According to the Hong Feng curve of rainfall, the rainfall is deduced back from the discharge. Results: in the case of Pa=40 mm, the critical rainfall in three periods of Datuan, Laoshan Mountain, was 62 mm,75 mm,95 mm, and the early warning indexes obtained by "reduction" treatment were 56,68,86mm and 68,83105 mm. respectively, and the ready transfer index was 56,688,86mm, and the immediate transfer index was 68,83105 mm..
【作者單位】： 濟(jì)南大學(xué)資源與環(huán)境學(xué)院;濟(jì)南市小清河管理處;濟(jì)南市錦繡川水庫(kù)管理處;山東省地下數(shù)值模擬與污染控制中心;
【基金】：山東省省級(jí)水利科研與技術(shù)推廣項(xiàng)目(SDSLKY201410) 山東省高等學(xué)�？萍加�(jì)劃項(xiàng)目(J15LH08)
【分類號(hào)】：P333.2

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