利用自由设站导线测量方法建立CPⅡ平面控制网探讨

Research on the new method of constructing CPⅡcontrol network for railway tunnel ballastless track

在铁路隧道贯通后,为满足无砟轨道铺设的需要,需建立线路平面控制网(CPⅡ)。本文分析了传统导线测量建立CPⅡ控制网存在的缺点,提出采用自由设站导线建立线路平面控制网(CPⅡ)。自由设站导线平面网较交叉导线、四边形导线网具有优势,可以在铁路隧道无砟轨道建立CPⅡ平面控制网时推广应用。

After railway tunnel break-through,the plane control network(CPⅡ)is established to meet the requirement of ballastless track laying.In this paper,the disadvantages of using traditional traverse survey for CPⅡare analyzed.The free-station traverse method to establish plane control network(CPⅡ)is proposed.It has more advantages than cross traverse and quadrilateral traverse network,which can be popularized and applied in the construction of CPⅡplane control network for ballastless track of railway tunnel.