济宁二号煤矿通风系统优化改造  

Optimization and transformation of ventilation system in Jining No.2 Coal Mine

作　　者：掌奕然 陶维国 郭传清 陈修杰 苗德俊[1] ZHANG Yiran;TAO Weiguo;GUO Chuanqing;CHEN Xiujie;MIAO Dejun(College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Jining No.2 Coal Mine,Yankuang Enery Group Co.,Ltd.,Jining 272000,China)

机构地区：[1]山东科技大学安全与环境工程学院,山东青岛266590 [2]兖矿能源集团股份有限公司济宁二号煤矿,山东济宁272000

出　　处：《工矿自动化》2023年第8期134-141,155,共9页Journal Of Mine Automation

基　　金：山东省自然科学基金资助项目(ZR2020QE137)。

摘　　要：针对目前对矿井工作面通风系统风量调节及矿井降阻等方面研究较少的问题,以济宁二号煤矿10303工作面和33下02工作面为工程背景,对这2处原有的通风系统在风量调节及矿井降阻等方面进行优化改造。将工作面通风系统图导入Ventism软件中,生成实体巷道并迭代计算,构建矿井通风网络解算模型。将现场实测的主要参数输入到该模型中进行风流计算,得到的巷道内流速、温度及风量等相关数据与现场测定数据误差在标准范围内。由矿井通风阻力测定结果可知,原有通风系统存在如下问题:南翼石门调节风墙设置不合理;33下02工作面实际供风量小于理想需风量;南翼-740水平轨道大巷通风路线长,受辅助运输巷并联进风的影响,南翼回风大巷阻力大。针对上述问题,提出3条改造措施:(1)在南翼回风石门和北翼带式输送机巷交汇处设置1个封闭风门,并将南翼带式输送机大巷与回风石门原有的风窗面积调整为2.9 m^(2);(2)在三采区轨道下山延伸与33下02轨道联络巷处设置1个面积为0.1 m^(2)的调节风窗;(3)在十一采区管子道和南翼-740水平轨道大巷接口处,将0.9 m^(2)的调节风窗改为2.4 m^(2),减少南翼-740水平轨道大巷风量,增加辅助运输巷的并联风量。改造后的通风系统模拟结果表明:南翼-740水平轨道大巷阻力降低了32.7%,33下02工作面风量提升了19.8%,矿井通风路线总阻力降低了6.4%。改造后的通风系统现场实测结果表明:实测风量和数值模拟结果平均相对误差为1.28%,实测阻力和数值模拟结果平均相对误差为2.52%,模拟结果与现场实测结果基本吻合。通风系统改造后,进风井风量和阻力变化不大;回风井监测点处的风量减少,阻力降低;33下02轨道联络巷及工作面监测点处实测风量分别增加了25.3%和21.4%,阻力增大了57.4%和41.1%;南翼-740水平轨道大巷监测点处实测风量降低了20.3%,实测阻力减Currently,there's a lack of research on air volume regulation and mine resistance reduction of ventilation system in mine working face.In order to solve the above problem,taking 10303 working face and 33low 02 working face of Jining No.2 Coal Mine as the engineering background,the original ventilation systems in these two areas are optimized and transformed in terms of air volume regulation and mine resistance reduction.The ventilation system diagram of the working face is imported into Ventism software,generating a solid roadway and iterating the calculation to construct a mine ventilation network solution model.The main parameters measured on-site are input into the model for airflow calculation.The errors between calculated relevant data such as flow velocity,temperature,and air volume in the roadway obtained and the on-site measurement data are within the standard range.From the measurement results of mine ventilation resistance,it can be seen that the original ventilation system has the following problems.The setting of the regulating air wall at the south wing stone gate is unreasonable.The actual air supply volume of 33low02 working face is less than the ideal air volume.The ventilation route of the south wing-740 horizontal track main roadway is long.It is affected by the parallel intake of auxiliary transportation roadways,resulting in high resistance in the south wing return air main roadway.In order to solve the above problems,three renovation measures are proposed.①A closed air door is installed at the intersection of the south wing return air stone gate and the north wing belt conveyor roadway.The original air window area of the south wing belt conveyor roadway and return air stone gate is adjusted to 2.9 m^(2).②A 0.1 m^(2)adjustable wind window is installed at the intersection of the extension of the third mining area's track downhill and the 33low02 connecting roadway.③The 0.9 m^(2)adjustable air window at the interface between the pipe duct in the 11th mining area and the south wing-740 hori

关 键 词：煤矿通风系统 风量调节 矿井通风网络解算 Ventsim软件 通风阻力 

分 类 号：TD724[矿业工程—矿井通风与安全]