Vízügyi Közlemények, 1936 (18. évfolyam)

Kivonatok, mellékletek - Kivonat a 2. számhoz

VIII. Communication is an indispensable means of goods traffic. The means of communication should be reliable, punctual, plying systematically, cheap and fast. The best development of production is secured by low freightage (but not under cost). The means of communication have to fulfil the requirements of the goods traffic. A good policy of communication creates a system affording means suitable to the direction and destination of the traffic and the nature of goods. In general the waterway is cheaper than any other means of communication ; its use therefore not only gives the goods already placed in the existing markets better chances in competition, but makes it possible to reach more distant consuming areas. For economic life, that policy of communication will be the most advantageous, the basis of which is a system of inland navigation in harmonious cooperation with the other means of traffic. In addition, the author attempts with the aid of Mr. E. Németh. Royal Chief Engineer, to determine on a mathematical basis the productive areas of an inland navigation route which is to be known for design, and the increase of the consuming area which can be reached by inland navigation. Then, for inland navigation routes, an economic-geographic illustration is given of the rise attainable in the price of the main agricultural product (Hungarian wheat) at the place of production or at the first sale (Hungarian Great Plains). In 1928 the difference in freightage for wheat between railway and waterway from stations on the Great Plains to Vienna amounted on an average to 255 pengő per quintal. Finally the author suggests that, when examining the directly lucrative character of a navigation way where State investment is concerned, amortisation and the interest on those sums which during the time of construction and operation return to the Treasury, according to law, as taxes, fees, duties, dues etc., should be left out of account. (In Germany 45%, in France 47%, in Hungary 35%.) (On the author's proposal the Congress reserved this question for discussion in the next session.) IV. GULLY STABILISATION AT NYULHECY. By b. TAVY. (Pages 179—196.) The Sárkánylyuk gully is situated in the north-east side of the Bakony mountains at a distance of 13 km from the City of Győr. In some places its depth is more than 35 m, and its breadth more than 50 metres. The most damaged part of the gully is its upper stretch of 170 m with an average slope of 20%. Waters running down the gully have caused great damage in the village of Nyúlfalu. For the purpose of stabilizing the gully its slope was reduced by means of bottom dams to such an extent that the kinetic energy of the water could not carry away the deposits settled behind the dams. The distance and the height of the dams were determined so that the gradient of the line connecting the toe of the upper dam with the crest of the lower dam was 2'5%

0 (fig. 4), and the maximum velocity of the flood, amounting to 9'6 m

3/sec, was Г

65 m/sec. The water volume