矿井复杂管网内有害气体的非稳态运移模型与实验研究

doi:10.11799/ce202111026

Abstract

Abstract:

Based on one-dimensional unsteady flow differential equation, a dynamic dispersion migration model of instantaneous harmful gas in mine air network is established to realize the rapid prediction of instantaneous harmful gas concentration in complex mine pipe network. The variation law of harmful gas cloud group at roadway intersection is analyzed. The accuracy of tracer gas model is verified by using large-scale experimental roadway model. The results show that the propagation law of the instantaneous release of harmful gases in the roadway conforms to the Gaussian distribution model However, the maximum error between the peak SF6 concentration and the simulated peak is 9.56 and the maximum error of the predicted peak arrival time is 3.88. Therefore, the migration characteristics of harmful gas cloud in complex pipe network can be predicted only by considering the action of gas translation and dispersion with flow, and the research results provide technical support for the formulation of mine air control measures.

CLC Number:

TD713

References

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The unsteady migration model of harmful gas in complex pipe network of mine and experimental research

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