复杂通风网络角联风流安全稳定性评价与控制

Evaluation and Control of Safety and Stability of Diagonal Branch in Complex Ventilation Network

针对复杂通风网络中角联分支风流安全稳定性问题,从影响角联风流稳定性的内因、外因以及安全性因素方面建立了评价指标体系,运用层次分析法确定了各指标权重,提出角联风流安全稳定性的模糊优选评价法。从提高角联分支风流的安全稳定性出发,提出了在满足用风地点需风量的条件下,优先选择在角联分支的可调正负导线敏感风路上调节的方法。以平煤五矿多风井通风网络为例,得出了所有角联分支风流安全稳定性的评价结果,并对其中最差的胶带斜巷,通过合理利用原有巷道,改变其风流方向和风量,使其达到风向上行、风量增大的目的。

Aiming at the problem of the safety and stability of diagonal branch (SSDB) in a complex ventilation network,an evaluation index system of SSDB based on the internal and external factors of the stability and safety was established. The weight of each index was calculated by AHP (analytical hierarchy process) and the evaluation method for SSDB based on fuzzy optimum selection was put forward. The method for regulating the positive and negative paths of the diagonal branch was first selected in order to improve SSDB under the condition of meeting the needs of air quantity in working places. Taking the multi-shaft ventilation network in No. 5 Coal Mine of Pingdingshan Tian'an Coal Industry Co.,Ltd. as an example,all evaluation results of SSDB were obtained,and by reasonably using the original roadway and changing its airflow direction and air quantity,the diagonal branch of the poorest inclined belt way was under effective control,as a result,achieving the goal that the air direction is upwards and the air quantity increases.