CAJ | 학술논문

山区线性工程一般穿越沟谷，因缺乏实测资料，设计洪水通常采用暴雨途径推求，其关键环节是设计暴雨计算。分析了滇中山区线性工程所穿越沟谷的各种频率暴雨量与海拔高程的相关关系，并计算区内沟谷断面集水区各种频率的暴雨量。结果表明，区域内暴雨量与海拔高程和集水面积密切相关，区域暴雨量与高程拟合的经验公式具有较高精度；利用经验公式，结合集水区平均高程计算其点暴雨量，再采用点-面折减系数计算设计面暴雨量的方法符合该区域暴雨特征。
산구선성공정일반천월구곡，인결핍실측자료，설계홍수통상채용폭우도경추구，기관건배절시설계폭우계산。분석료전중산구선성공정소천월구곡적각충빈솔폭우량여해발고정적상관관계，병계산구내구곡단면집수구각충빈솔적폭우량。결과표명，구역내폭우량여해발고정화집수면적밀절상관，구역폭우량여고정의합적경험공식구유교고정도；이용경험공식，결합집수구평균고정계산기점폭우량，재채용점-면절감계수계산설계면폭우량적방법부합해구역폭우특정。
The design flood for linear engineering in mountainous area is generally estimated by rainstorm due to the lack of measured data there, so the key point is the design storm calculation. We analyzed the relationship between storm rainfall of dif-ferent frequency and elevation in valley area, and estimated the storm rainfall of different frequency at the cross-section in valley catchment. The results show that the storm rainfall is closely related to the elevation and catchment area;the empirical formula of the area storm rainfall and elevation possesses high accuracy. The design area storm flood could be calculated by using the empir-ical formula, in which the point storm rainfall is estimated according to the average elevation of the catchment area, and then the design area storm rainfall is obtained by using point-area reduction coefficient, the result is accord with the characteristics of rainstorm in those mountainous area.