深井热害治理场-网复合数值模拟研究

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中图分类号：TD727.2 文献标志码：A

Abstract：Research on deep well heat hazard control mainly uses two types of numerical models：threedimensional CFD models （field models）and one-dimensional ventilation network models （network models）. However，the field models require enormous computational resources and are difficult to apply for whole-mine scale simulations，while network models cannot accurately represent the three-dimensional distribution characteristics of heat sources and the local heat disipation effects of equipment.To address these issues，taking JiaojiaGoldMineof Shandong GoldMining （Laizhou）Co.，Ltd.as theresearchobject，a field-network hybrid numerical simulation method for deep well heat hazard control was proposed.The mine ventilation system was composedof nodes from the network model.The extraction main ventilator drew low-temperatureairflow introduced from the surface，which heated upafter passing through the high-temperature mining face，then flew throughthereturnairway and returned to the surface.The high-temperaturemining face area was modeled bya three-dimensional field model.The field model obtained input boundary conditions from corresponding nodes at the inletboundary throughanarea-weightedaveraging method.Theoutletboundaryparametersof the field model were calculated via fluid control calculations and converted into node information， which was introduced into the network model as source terms，thereby realizing the field-network hybrid numerical simulation.Results showed that： ① As the length of the supply airway increased， the high-velocity area gradually concentrated toward the center axis of the airway，the peak temperature gradually decreased，and the high-temperature zone tended to shift downward overall. ② When the heat source power was too high （severe heat hazard）， the convective cooling effect provided bythe main ventilator was poor. At this time，increasing the ventilator airflow could furtherreduce the mining face temperature.

Key words： deep wellheat hazard control; mine ventilation; CFD model; ventilation network model; fieldnetwork hybrid numerical simulation

0引言

1工程背景

随着我国金属矿山浅部资源逐渐枯竭，深部资源开采已成为必然的发展趋势。（剩余13309字）