摘要
Through analyzing experimental data of gas explosions in excavation roadwaysand the forecast models of the literature, Found that there is no direct proportional linearcorrelation between overpressure and the square root of the accumulated volume of gas,the square root of the propagation distance multiplicative inverse.Also, attenuation speedof the forecast model calculation is faster than that of experimental data.Based on theoriginal forecast models and experimental data, deduced the relation of factors by introducinga correlation coefficient with concrete volume and distance, which had been verifiedby the roadway experiment data.The results show that it is closer to the roadway experimentaldata and the overpressure amount increases first then decreases with thepropagation distance.
Through analyzing experimental data of gas explosions in excavation roadways and the forecast models of the literature, Found that there is no direct proportional linear correlation between overpressure and the square root of the accumulated volume of gas, the square root of the propagation distance multiplicative inverse. Also, attenuation speed of the forecast model calculation is faster than that of experimental data. Based on the original forecast models and experimental data, deduced the relation of factors by intro- ducing a correlation coefficient with concrete volume and distance, which had been veri- fied by the roadway experiment data. The results show that it is closer to the roadway ex- perimental data and the overpressure amount increases first then decreases with the propagation distance.
基金
Supported by the National Natural Science Foundation of China(50874005)
Anhui Province College Young Teachers Scientific Research"Allotment Planning"Key Project(2009SQRZ067)
