Vízügyi Közlemények, Kivonatok, 1965

Dégen Imre: Az 1965. évi dunai árvíz és árvízvédelmünk fejlődése

(41) During the flood period 1,000.000 cu.m earth was moved for constructing localization and ring dykes of permanent character. Construction technology was controlled by the nature and the required speed оi work. Equipment for preliminary work was first transported to the site, to which additional equipment was added gradually. Machines were transported frequently from great distances to the site, but work on endangered sections could always be started 24 hours after the decision was made and orders were issued. This earthwork does not include immediate defense, such as filling of sand bags, etc. Greatest daily output was achieved on the 1st June by moving and placing 42.200 cu.m earth. Problems relating to material supply and transportation are discussed in Chapter 5. The bulk of the 40.000 tons of quarry stone was transported from the quarry above Budapest directly on the river to the site and minor quantities only were transported by rail. Water transport was detained by forests in the flood plain, narrow levee foreshore and ramps perpendicular to the levee. 4.2 million sand bags were filled and transported to the site. Bags were readily available and similarv no delays were experienced in the supply of sheet piles, the production of which could keep pace with use. Communication and information services during the flood are described in sections a) and b), respectively of Chapter 6. Both the cable phone of the Hydraulic Service, the postal network and the ultra-short wave wireless network functioned satisfactorily, and it was the latter of these which proved especially efficient. A diagram of transmitting stations is shown in Fig. 4. In describing the information service, the hydrological bulletin published daily by the Hydrographie Service, informations to press, broadcasting and television agencies, as well as close contact with hydraulic agencies of neighbouring countries are mentioned. The survey of damages and reconstruction are described in Chapter 7. The area protected by the 610 km length of levees was about 505.000 hectares. Direct damages amounted to 366 million Forints (Table VII), while defense costs totalled at 350 million Forints. The loss due to production fall-out was 290 million Forints. The total loss to the national economy was thus round 1 thousand million Forints. 3.2 FLOOD CONTROL IN THE SZIGETKÖZ AND KOMÁROM REGIONS By B. Bencsik, Civ. Eng. (For the Hungarian text see pp. 167) Flood control operations over the North-Transdanuvian reach of the Danube between the border and the mouth of the Ipoly River are described in this paper. The sections affected were the levees on the righr-hand, bank of the Danube and the backwater reaches of the right-hand tribu-