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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
Äåïðåññèÿ âåíòèëÿòîðíîé óñòàíîâêèîïðåäåëÿåòñÿ â çàâèñèìîñòè îò ìèíèìàëü­
íîé, ìàêñèìàëüíîé äåïðåññèè øàõòû è äåïðåññèè åñòåñòâåííîé òÿãè. Ìèíèìàëüíàÿ
äåïðåññèÿ âåíòèëÿòîðíîé óñòàíîâêè îïðåäåëÿåòñÿ ïî ôîðìóëå

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.

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