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一、引言党庄严地提出了“建设旱涝保收、稳产高产农田”的伟大号召。贵州省与其他省区一样,正在掀起这一伟大的社会主义建设运动。贵州省处于山丘地区,可耕土地分散,渠道傍山蜿蜓,地质情况复杂,沿渠渗漏极为严重。渠道渗漏一方面降低了渠系有效利用系数,另一方面也会造成山坡塌滑事故。因此,渠道的渗漏计算及其防渗措施的选择引起了人们的重视。对地面平缓且土质均匀的土层上的渠道渗漏计算,已有很多方法。对山丘地区的斜坡且不均匀土质或岩层上的渠道的渗漏计算方法,还不多见。本文针对山坡渠道的特点提出近似的渗漏计算方法,并对防渗措施的选择提出一般性的意见。
I. Introduction The Party solemnly proposed the great call of “building a drought-laden income and ensuring a stable and high-yield farmland”. Guizhou Province, like other provinces and autonomous regions, is setting off this great socialist construction movement. Guizhou Province is in a hill area where arable land is scattered and the channels are meandering. The geological conditions are complicated and the seepage along the canal is extremely serious. On the one hand, canal leakage reduces the effective utilization coefficient of canal system and on the other hand, it also causes hill-slide collapse accident. Therefore, the calculation of seepage and the selection of seepage control measures aroused people’s attention. There are many ways to calculate canal leakage on soil layers that are flat and of uniform soil mass. It is rare to find a method to calculate the seepage of slopes and inhomogeneous soil or rock formations in the hills. In this paper, an approximate leakage calculation method is proposed according to the characteristics of hillside channels, and general opinions on the selection of seepage prevention measures are given.