Abstract
To truly represent the developing changes and spatiotemporal effects of gas explosion in underground mine, this paper discussed the field modeling and visual simulation technology of mine gas explosion. Through analyzing the characteristics of various field parameters, space geometric field models, physical attribute field models, and meteorological parameter field models were established to describe mine engineering, ventilation network, and explosion disaster process, respectively. Based on the generated model class and simulation timing flow of gas explosion disaster field, OpenGL technology was adopted to visualize the model of gas explosion disaster field, which simulated the overpressure propagation process of gas explosion shockwave and dynamic spread process of disaster gas, thereby to reveal the developing changes of gas explosion parameters in time and space. Taking the gas explosion accident that occurred in a certain mine in China as an example, the disaster process was inferred to examine the availability of the mine gas explosion disaster field model. The research achievements in the paper not only embody the great engineering value of visual simulation technology in the field of safety engineering but also provide references for accident impact prediction, assessment, and emergency plan.
Highlights
To truly represent the developing changes and spatiotemporal effects of gas explosion in underground mine, this paper discussed the field modeling and visual simulation technology of mine gas explosion. rough analyzing the characteristics of various field parameters, space geometric field models, physical attribute field models, and meteorological parameter field models were established to describe mine engineering, ventilation network, and explosion disaster process, respectively
Taking the gas explosion accident that occurred in a certain mine in China as an example, the disaster process was inferred to examine the availability of the mine gas explosion disaster field model. e research achievements in the paper embody the great engineering value of visual simulation technology in the field of safety engineering and provide references for accident impact prediction, assessment, and emergency plan
E shockwave, high-temperature airflow, and the interaction of disaster gas and ventilation system, which are generated by gas explosion disaster, expand the scope of the disaster. e dynamic developing process of the gas explosion is an issue of complicated system engineering; professional software must be adopted to achieve the simulation of its disaster process
Summary
Based on the theory of mine compound field [17], the digital mine includes geometric information such as the spatial shape of the ore body and the spatial relationship of the mine roadway, the physical attribute information such as the material composition, and mechanical parameters of the ore body and the wall rock and covers meteorological attribute information such as the temperature, humidity, and noxious gas concentration in underground mine. Modeling of meteorological attribute field variable is based on the unsteady network solution calculation, combined with the models of wind flow temperature propagation, fire wind pressure, and disaster gas propagation. Based on the establishment of the visualization model class of gas explosion disaster process and the analysis structure of time sequence characteristics of field variable, the timing flow diagrams of gas explosion disaster process simulation are given. The time sequence flow of the disaster gas simulation spreading has the following processes: first invoke the ExpPos, ExpTem, and ExpCon classes to determine the related parameters such as the location of explosion. E module can mainly achieve the analysis of the influential range of shockwave overpressure, the determination of structure damage, gas diffusion simulation of explosion disasters, wind flow simulation of disaster process, the selection of optimal escape and disaster relief routes, and so forth According to the network solution model, the simulation of the gas explosion disaster process is achieved on the basis of the collected network basic data and gas explosion disaster data. e module can mainly achieve the analysis of the influential range of shockwave overpressure, the determination of structure damage, gas diffusion simulation of explosion disasters, wind flow simulation of disaster process, the selection of optimal escape and disaster relief routes, and so forth
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