Abstract. Some publications describe an effect, produced during a physical model experiment, when an adjacent gas-free room influences the gas explosion pressure in a room with a window. The explosion pressure in this case significantly exceeds (2.5 times) the explosion pressure in a room without an adjacent room. This result has been confirmed by our studies. Based on other available information about the influence of the ignition point location on the explosion pressure in one room, it was suggested that this could be true for an explosion in two rooms. In our studies we used a test unit with two connected chambers, each having a volume of 1.125 m 3 . It turned out that this influence of the adjacent volume was not so unambiguous as it was described in those publications. It was found out that the maximum effect of explosion pressure amplification by the adjacent room is achieved, when the igniter is located in the chamber filled with a gas-air mixture in the area between the center of the chamber and the window (maximum amplification by more than 3 times). This effect is lower directly by the window (1.8 times) and is practically absent in case of ignition within the area near the passage connecting the chamber with the adjacent room. This suggests that the effect discovered earlier is a special case of the general dependence of the gas explosion pressure in two chambers on the igniter location.

Íà èñïûòàòåëüíîì ñòåíäå ÌÃÑÓ áûëè ïðîâåäåíû ïåðâûå â Ðîññèè ïðèåìî÷íûå èñïûòàíèÿ ëåãêîñáðàñûâàåìûõ êîíñòðóêöèé (ñýíäâè÷-ïàíåëåé è ñòåêëîïàêåòà). Íà îñíîâàíèè àíàëèçà äàííûõ ýòèõ èñïûòàíèé íàìè ïîêàçàíî, ÷òî óâåëè÷åíèå óäåëüíîé ìàññû ËÑÊ (ñ 9 äî 25 êã/ì 2) ïðèâîäèò ê óõóäøåíèþ èõ ñâîéñòâ êàê ñðåäñòâà îáåñïå÷åíèÿ áåçîïàñíîñòè ïðè âçðûâå â ïîìåùåíèè ïî äâóì ïàðàìåòðàì: ïîâûøåíèþ äàâëåíèÿ âçðûâà ïî ñðàâíåíèþ ñ äàâëåíèåì ñáðîñà ËÑÊ (ïðè èñïûòàíèÿõ îò 0,5 äî 3,5 êÏà) è óâåëè÷åíèþ âðåìåíè åå ñáðîñà. Îòìå÷åíî, ÷òî íàøè ðåçóëüòàòû íà êà÷åñòâåííîì óðîâíå âïîëíå ñîãëàñóþòñÿ ñ èçâåñòíûìè, ïîëó÷åííûìè íà ìîäåëÿõ. Ñäåëàíû äâà âûâîäà: ïðàâîìåðíîñòü èñïîëüçîâàíèÿ ðåçóëüòàòîâ ìîäåëüíûõ îïûòîâ ïðè ðàñ÷åòàõ õàðàêòåðèñòèê ðåàëüíûõ ëåãêîñáðàñûâàåìûõ êîíñòðóêöèé ñîìíèòåëüíà; íà äàííîì ýòàïå èññëåäîâàíèé îá ýôôåêòèâíîñòè ËÑÊ ìîaeíî ñóäèòü òîëüêî ïî ðåçóëüòàòàì åå èñïûòàíèé â óñëîâèÿõ, ïðèáëèaeåííûõ ê ðåàëüíûì. Êëþ÷åâûå ñëîâà: ãàçîâûå âçðûâû; ïîìåùåíèÿ; ëåãêîñáðàñûâàåìàÿ êîíñòðóêöèÿ (ËÑÊ); ñýíäâè÷ïàíåëè; ñòåêëîïàêåò; ìîäåëüíûå èñïûòàíèÿ.

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* Ðàññìàòðèâàåòñÿ ãàçîâûé äåôëàãðàöèîííûé âçðûâ áåç òóðáóëèçàöèè ïëàìåíè è âèáðàöèîííîãî ãîðåíèÿ. ** Èìååòñÿ â âèäó ìàêñèìàëüíîå çíà÷åíèå äàâëåíèÿ ïðè âçðûâå. *  ôèçè÷åñêîì ýêñïåðèìåíòå (ñì. ðèñ. 1) âîñïëàìåíåíèå ïðîèçâîäèëîñü ñïðàâà. Ðèñ. 3. Õîä äàâëåíèÿ ïðè âçðûâàõ â êàìåðå ñ îêíîì äèàìåòðîì 20 ìì â ïîç. 1 (à) è ïîç. 3 (á)