Influence of Multiple Factors on the Explosion Characteristics of Flammable Gases in Municipal Sewage Pipelines

Table 1

Simulation schemes.

Factors	Inspection well depth (m)	Gas concentration and composition	Ignition position	Ignition position test points
Influence of ignition position	4	6% CH4	Top; Center; Bottom	Test point 21; Test point 17; Test point 13
Influence of inspection well depth	2; 4; 6	6% CH4	Center	Test point 15; Test point 17; Test point 16
Influence of gas composition	4	6% CH4 6% CH4 + 1% C8H18	Center	Test point 17
Influence of gas concentration	4	2% C8H18; 4% C8H18; 6% C8H18	Center	Test point 17