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ÐÀÑ×ÅÒ ÏÐÎÈÇÂÎÄÈÒÅËÜÍÎÑÒÈ, ÄÅÏÐÅÑÑÈÈ ÂÅÍÒÈËßÒÎÐÀ È ÅÃÎ ÂÛÁÎÐ
Ïîäà÷à âåíòèëÿòîðíîé óñòàíîâêè (QB), äëÿ ñëó÷àÿ, êîãäà âíåøíèå óòå÷êè âîçäóõà îïðåäåëÿþòñÿ ïî íîðìàì, ðàññ÷èòûâàåòñÿ ïî ôîðìóëå
Qâ =Qø + ΣQâí.óò (17.1)
ΣQâí.óò - óòå÷êè âîçäóõà ÷åðåç íàäøàõòíîå çäàíèå è âåíòèëÿöèîííûé êàíàë, êîòîðûå ïðèíèìàþòñÿ â ñîîòâåòñòâèè ñ ðóêîâîäñòâîì ïî ïðîåêòèðîâàíèþ âåíòèëÿöèè øàõò â çàâèñèìîñòè îò ïëîùàäè íàðóæíûõ ñòåí è ïåðåêðûòèé íàäøàõòíîãî çäàíèÿ è ïîïåðå÷íîãî ñå÷åíèÿ êàíàëà âåíòèëÿòîðà. Åñëè ïëîùàäü ñòåí è ïîïåðå÷íîå ñå÷åíèå êàíàëà íå èçâåñòíû, òî óòå÷êè ó÷èòûâàþòñÿ êîýôôèöèåíòîì âíåøíèõ óòå÷åê, òîãäà
Qâ =Qø kóò.âí. (17.2)
ãäå kóò.âí - êîýôôèöèåíò, ó÷èòûâàþùèé âíåøíèå óòå÷êè. Äëÿ îðèåíòèðîâî÷íîãî ðàñ÷åòà ïðîèçâîäèòåëüíîñòè âåíòèëÿòîðà îí ïðèíèìàåòñÿ : 1. Ïðè óñòàíîâêå âåíòèëÿòîðîâ íà ñêèïîâîì ñòâîëå - 1.25; 2. Ïðè óñòàíîâêå âåíòèëÿòîðîâ íà êëåòåâîì ñòâîëå -1.2; 3. Íà ñòâîëàõ è øóðôàõ íå èñïîëüçóåìûõ äëÿ ïîäúåìà -1.1 4. Íà ñòâîëàõ è øóðôàõ èñïîëüçóåìûõ äëÿ ïîäúåìà è ñïóñêà ìàòåðèàëîâ - 1.3 Íâ.min =hø.min –hå.ç (17.3) ãäå hø.min – ìèíèìàëüíîå çíà÷åíèå äåïðåññèè øàõòû çà ïëàíèðóåìûé ïåðèîä ýêñïëóàòàöèè âåíòèëÿòîðíîé óñòàíîâêè; hå.ç - ìàêñèìàëüíîå ïîëîæèòåëüíîå çíà÷åíèå äåïðåññèè åñòåñòâåííîé òÿãè â çèìíèé ïåðèîä. Ìàêñèìàëüíàÿ äåïðåññèÿ âåíòèëÿòîðíîé óñòàíîâêè îïðåäåëÿåòñÿ ïî ôîðìóëå Íâ.max =hø.max ± hå.ë (17.4) ãäå hø.max ìàêñèìàëüíîå çíà÷åíèå äåïðåññèè øàõòû çà ïëàíèðóåìûé ïåðèîä ýêñïëóàòàöèè âåíòèëÿòîðíîé óñòàíîâêè; hå.ë - çíà÷åíèå äåïðåññèè åñòåñòâåííîé òÿãè â ëåòíèé ïåðèîä.  ôîðìóëå (17.4), çíàê + áåðåòñÿ, åñëè äåïðåññèÿ åñòåñòâåííîé òÿãè â ëåòíèé ïåðèîä èìååò îòðèöàòåëüíîå çíà÷åíèå, à çíàê - ïðè ïîëîæèòåëüíîì çíà÷åíèè. Âûáîð âåíòèëÿòîðíîé óñòàíîâêè ïðîèçâîäèòñÿ ïî ïîëó÷åííûì çíà÷åíèÿì Qâ, H â.min, Íâ.max íà îñíîâå àíàëèçà àýðîäèíàìè÷åñêèõ õàðàêòåðèñòèê âåíòèëÿòîðîâ ãëàâíîãî ïðîâåòðèâàíèÿ. Ïðèíÿòûé ê óñòàíîâêå âåíòèëÿòîð äîëæåí èìåòü ðåçåðâ ïî ïðîèçâîäèòåëüíîñòè íå ìåíåå 15 %, íà ñëó÷àé ïîâûøåíèÿ ãàçîîáèëüíîñòè øàõòû èëè ïåðåâûïîëíåíèÿ ïëàíà óãëåäîáû÷è.
Äàòà äîáàâëåíèÿ: 2014-01-03; Ïðîñìîòðîâ: 568; Íàðóøåíèå àâòîðñêèõ ïðàâ? Íàì âàæíî âàøå ìíåíèå! Áûë ëè ïîëåçåí îïóáëèêîâàííûé ìàòåðèàë? Äà | Íåò
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