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<br />- <br /> <br />, <br /> <br />. <br /> <br />. <br /> <br />Analysis of the Torrent Lava Aow Movement anll Its Camp1ltalians - <br />One Example Applied Invesligation 01 Disastrous Torren. Flood <br /> <br />Zoran Gavrilovic, Dip\. Eng.' <br /> <br />Abstract <br /> <br />To compute torrent lava Oow is hardly an casy task. Most ollen i. has <br />to be determined on the basis of Oood traces. In the case 01 phenomenon <br />discussed, it was the only possible way since all gauging devices were <br />completely destroyed. <br /> <br />Every expert is well aware of the difficulties encountered in computing <br />on the basis of tortent flood traces, even when the flood is much less intensive <br />than the one described here. <br /> <br />A disastrous torrent Oood on the Vlasina River 0126 June 1988 was <br />of unprecedented intensity in Yugoslavia. The catchment area affected by the <br />catastrophe covered more than 1,000 lan1 and the damage was estimateu to <br />one billion dollars. <br /> <br />The torrential Oows discharge velocity could be measured only on .he <br />surface (using buoys, under the condition of really being present at the <br />moment of passage of the flood water peak). Standard methods of compu.a- <br />tion using Bassin's aDd Manning's formulas, as well as their compilations. dill <br />not yield satisfactory results. <br /> <br />The detailed reconstruction of tbe torrential Oood wave, enabled the <br />accuracy which is difficult to achieve in such situations. The greatest error <br />could be of the 15 minutes order of magnitude which is negligible if the Oood <br />waves traveltime of 9 (eight) hours is considered. <br /> <br />'Institute for Ibe Developmenl of Water Resourees. ftJaroslav temift. Jaroslava Cemog KO. II ~-; <br />Beograd (Beli Potot) Yugoslavia. <br /> <br />650 <br /> <br />. <br /> <br />YlJ(jOSI.^VI^ I;U)()I)~ I.^V^ H ow <br />. ~'l <br /> <br />The results were rather inter .. . <br />now. In analyzjng the results ir es mg. particularly those regarding. lava <br /> <br />lava flow and of Ouid now' '1 dwas I~oncluded 111,11 the principles of lorrent <br />10 lY rau Ie systems are different <br />