隧道通风立井井筒掘砌期间供电系统设计

Design of Power Supply System during Tunneling of Tunnel Ventilation Shaft

随着建井机械化程度的提高,建井用电设备的功率日益增大,建井期间的用电负荷逐渐升高,这些因素无疑给施工现场安全供电带来了不利的影响。电力是不可缺少的动力源,而井筒施工期间往往永久供电系统又未形成,为保证工程正常施工,须设置临时供电系统。[1]本文主要阐述了井筒掘砌期间,施工现场临时供电系统用电负荷计算,并以此为依据计算电缆截面、变压器容量、电压损失等。对施工现场临时用电具有一定的指导作用。

With the increase of mechanization of construction wells, the power of equipment for building wells is increasing day by day,and the electricity load during construction is gradually increasing. These factors undoubtedly have a negative impact on safe power supply at the construction site. Electric power is an indispensable power source, and permanent power supply systems are often not formed during wellbore construction. In order to ensure the normal construction of the project, provisional power supply system must be provided.[1]This paper mainly elaborated the calculation of the electric load of the temporary power supply system at the construction site during the wellbore excavation, and calculated the cable cross-section, transformer capacity, voltage loss and so on. It has a certain guiding role in the temporary use of electricity on the construction site.