论时速大于200 km铁路精密工程测量技术

时速大于200km铁路必须具有高精度的几何线性参数,做到高平顺性。因此,必须建立一套与之相适应的精密工程测量体系。2004年,铁道部决定在遂渝线建设无碴轨道综合试验,组织开展无碴轨道铁路工程测量技术的研究,并建立遂渝线无碴轨道综合试验段精密测量控制网。研究提出了我国无碴轨道铁路工程控制测量采用勘测控制网、施工控制网、运营维护控制网的测量体系,时速大于200km铁路轨道采用绝对定位与相对定位测量相结合的铺轨测量定位模式,无碴轨道铁路工程测量平面坐标系统采用边长投影变形值≤10mm/km的工程独立坐标系。确定了我国无碴轨道铁路工程平面控制测量分三级布网的布设原则和无碴轨道铁路工程测量高程控制网的精度等级。

Precise Engineering Survey Technology for Railways Run by Trains over 200 km/h

Geometry linear parameter with high precision is indispensable for railways run by trains over 200 km/h.In 2004,MOR decided to launch integrated experiment for ballastless track on Suining-Chongqing Railway.Later on,MOR carried out research on engineering survey technology for ballastlees track,established precise survey network for comprehensive experimental section of ballastless track on Suining-Chongqing Railway,and made it clear that we should adopt survey system with survey control network,construction control network and operational maintenance control network for engineering control survey of ballastless track;besides,track laying survey orientation mode with combination of absolute and relative orientation survey methods must be adopted on railway run by trains over 200 km/h.