复杂矿井通风网络可视化动态解算及预警技术

Visualized dynamic solution and early warning technology for ventilation network of complex mine

针对存在煤层倾角大、地质构造复杂、开采时间长等情况的复杂矿井,采用传统的通风网络人工分析方法或常见通风网络解算软件存在工作量大、效率低、错误率高、解算不全面等问题,从而不能实时、全面掌握井下各巷道的通风安全状况。以南桐煤矿通风系统为研究对象,根据其通风系统复杂特征,从通风网络动态解算模型及方法、矿井通风阻力参数测定、通风异常预警、通风系统可视化等方面研究了复杂矿井通风网络可视化动态解算及预警技术,并依据该技术开发了矿井通风网络可视化动态解算及预警系统。应用表明,该系统解算风量与实际风量的误差小于10%,解算结果可实时、动态显示,实现了矿井风速及风压参数全量程精准测定、全矿井通风网络动态解算、通风异常连续分析与预警。

Traditional manual analysis methods of ventilation network or usual ventilation network solution software used in complex mines with large coal-seam dip angle,complex geologic structure and long mining time have problems of large workload,low efficiency,high error rate,incomplete solution and so on,and cannot well know ventilation safety status of underground roadways real-timely and completely.For the above problems,taking Nantong Coal Mine as a research object,visualized dynamic solution and early warning technology for ventilation network of complex mine was researched from aspects of dynamic solution model and method of ventilation network,measurement of mine ventilation resistance parameters,early warning of abnormal ventilation and visualization of ventilation system according to complex characteristics of the mine ventilation system.A visualized dynamic solution and early warning system of mine ventilation network is developed according to the technology.The applications show that error between solved air quantity of the system and the actual one is less than 10%,and solution results can be displayed real-timely and dynamically.The system realizes precise measurement of mine air speed and air voltage parameters in full range,dynamic solution of whole mine ventilation network and consecutive analysis and early warning of abnormal ventilation.