基于Tikhonov正则化的矿井通风网络测风求阻法

摘要

According to the dynamic and complex characteristics of the mine ventilation system, the algorithm of choosing the optimum circuit for the minimum regulation number of measuring airflow and evaluating resistance model was put forward. Combining with the real-time dynamic monitoring data of the air volume, the paper established the measuring airflow ＆ evaluating resistance model of the mine ventilation network based on the monitoring data. Because it easily constructed the ill-posed coefficient matrix while the model applied to the complex network, the solving method of parameters of the Tikhonov regularization based on the greedy algorithm was proposed to revise the model. The application shows that this method can reduce the severity of ill-posed matrix and moderately solve complex ventilation network. It exerts the real-time dynamic monitoring function of the monitoring the basic data to the dynamic simulation of mine ventilation system. the resistance of the system and provides%针对矿井通风系统动态性和复杂性的特点，提出了测风求阻法所需最少调节次数时的最优回路选择算法，结合矿井巷道风量的实时动态监测数据，建立了基于监测数据的矿井通风网络测风求阻模型。针对复杂通风网络易构造病态测风求阻模型的问题，提出了基于贪婪进化算法的Tik-honov正则化参数求解方法，对模型进行修正处理。应用结果表明，该方法可以减轻模型病态的严重程度，求解复杂通风网络分支风阻，并能发挥监测系统的实时动态监测功能，为矿井通风系统动态模拟提供基础数据。