Ƙididdigar Ƙwararriyar Iskar iska da Zaɓin Kayan aiki a Ginin Tunneling (2)

2. Lissafin ƙarar iska da ake buƙata don gina rami

Abubuwan da ke ƙayyade ƙarar iska da ake buƙata a cikin tsarin ginin rami sun haɗa da: matsakaicin adadin mutanen da ke aiki a cikin rami a lokaci guda;Matsakaicin adadin abubuwan fashewa da aka yi amfani da su a cikin fashewa guda ɗaya: mafi ƙarancin saurin iska da aka ƙayyade a cikin rami: fitar da iskar gas mai guba da cutarwa kamar gas da carbon monoxide, da adadin injunan konewa na ciki da aka yi amfani da su a cikin rami jira.

2.1 Yi ƙididdige ƙarar iska gwargwadon iskar da ake buƙata ta matsakaicin adadin mutanen da ke aiki a cikin rami a lokaci guda.
Q=4N (1)
inda:
Q - ƙarar iska da ake buƙata a cikin rami;m³/min;
4 - Mafi ƙarancin ƙarar iska wanda ya kamata a ba da shi kowane mutum a cikin minti daya; m³/min • mutum
N - Matsakaicin adadin mutanen da ke cikin rami a lokaci guda (ciki har da jagorantar ginin);mutane.

2.2 An ƙididdige shi gwargwadon adadin abubuwan fashewa
Q=25A (2)
inda:
25 - Matsakaicin ƙaramar iska da ake buƙata a cikin minti daya don nutsar da iskar gas mai cutarwa da fashewar kowane kilogiram na abubuwan fashewa ya haifar zuwa ƙasa da adadin da aka yarda a cikin ƙayyadadden lokacin;m³/min•kg.

A - Matsakaicin adadin fashewar da ake buƙata don fashewa ɗaya, kg.

2.3 An ƙididdige shi bisa ga mafi ƙarancin saurin iskar da aka ƙayyade a cikin rami

Q ≥V_min•S (3)

inda:
V_min- mafi ƙarancin saurin iskar da aka ƙayyade a cikin rami;m/min.
S - ƙananan yanki na giciye na ramin gini;m².

2.4 Ana ƙididdigewa bisa ga fitowar iskar gas mai guba da cutarwa (gas, carbon dioxide, da sauransu)

Q=100•q·k (4)

inda:

100 - Ƙididdigar da aka samu bisa ga ka'idoji (gas, carbon dioxide da ke fitowa daga fuskar rami, ƙwayar carbon dioxide bai fi 1%) ba.

q - cikakkiyar fitowar iskar gas mai guba da cutarwa a cikin rami, m³/min.Dangane da matsakaicin ƙimar ƙimar ƙididdiga da aka auna.

k - rashin daidaituwar ma'auni na iskar gas mai guba da cutarwa daga cikin rami.Matsakaicin matsakaicin ƙarar gushing zuwa matsakaicin ƙarar gushing, wanda aka samu daga ainihin ƙididdigar ma'auni.Gabaɗaya tsakanin 1.5 da 2.0.

Bayan ƙididdigewa bisa ga hanyoyin huɗun da ke sama, zaɓi wanda ke da ƙimar Q mafi girma a matsayin ƙimar ƙimar iskar da ake buƙata don isar da iska a cikin rami, sannan zaɓi kayan aikin iskar iska gwargwadon wannan ƙimar.Bugu da ƙari, ya kamata a yi la'akari da adadin injunan konewa na ciki da kayan aiki da aka yi amfani da su a cikin rami, kuma ya kamata a ƙara yawan iskar iska yadda ya kamata.