Study on Gas Disaster Risk Assessment System of Tunnel Engineering

The article explains the prevention of gas disasters by analyzing the formation of coal-bed gas,its storage and movement and factors affecting them.

Macro methods were adopted to observe the type of gas disasters,and coal capacity of permeability and isotherm on trial was measured.

In order to study the control results of the gas explosion flame spreading by water spraying,a combustion restrained space and water spraying system of borehole gas developed and manufactured by itself was applied to the experiment and study on the fine water spraying to control gas flame with different pressure and different nozzles.

Study on classification and identification indexes about gas dynamical disaster in coal mine;