鲁班山南矿通风改造方案选择及主通风机改造

Reform Scheme Selection of Ventilation and Main Fan Transformation in Lubanshan South Mine

鲁班山南矿主要通风机的理论特性曲线和实际特性曲线存在很大的差别,另外矿井通风设计提供的风量比实际用风量小、而矿井设计通风风阻比实际矿井通风风阻大,致使目前该矿主通风机工况点处在明显不合理的位置:风机已经没有富裕能力、效率低下。先从优化通风线路入手,提出3个通风方案,并利用通风网络解算软件对其中2个可行的方案进行了通风网络解算;从通风网络解算结果和其他几方面的定性比较,得出了最优方案,即"三进一回"的通风方案。结合选定的最优矿井通风方案,再从矿井主要通风机运行的技术可行性、运行成本和投资成本考虑,提出了首先对现有的2台对旋防爆轴流式主要通风机进行技术改造,更换主要通风机风机叶片、更换电机等,后期结合第二水平的通风改造,更换通风能力更大的主要通风机。

There is a big difference between the main ventilator＇s theoretical characteristic curve and practical curve in Lubanshan South Mine, and the designed air volume of the mine is smaller than the actual air volume, while the designed mine ventilation resistance is larger than the actual mine ventilation resistance, resulting in the fan operating point being at an obvi- ously unreasonable point at present ： Fan has no surplus capacity with low efficiency. First from the optimization of the ventila- tion line, three ventilation schemes are put forward, two of which feasible schemes being calculated by ventilation network cal- culation software. By qualitative comparison of ventilation network calculation results with several other aspects, the optimal scheme is determined, namely, the plan of three intake one return. In combination with the selected optimal mine ventilation system, considering the technical feasibility, operation cost and investment cost of the mine main fan consideration, it is pro- posed that the existing two sets of rotary explosion-proof axial flow type main fan is technologically transformed,i, e. , changing fan blade and replacing its motor, and then the main fan with larger ventilation capacity is used in later period, combining with the ventilation reform at the second level.