Through the investigation and study of the operating status at the present tunnel places of the urban trunk highways in Tongzhou District of Beijing, the article analyzes the influence level of the vehicle turning on the traffic function of the intersections, and gives the preliminary conclusion for how reasonably to arrange the turning places, and puts forward the.

This paper presents an operating method of on the spot turn-around of a super large diameter shield machine which after break-in,ought to be turn-around,translated and returned for a second boring in opposite direction,in sharp contrast to the convention- al handling of disassembly after break-in,then lift-off and re-assembly of the shield for a second boring.

The influence of "non-standard accuracy" on coaxiality of turnover boring on NC horizontal boring machine;

Research on Turnover Boring on Planer Type NC Milling & Boring Machine with Movable Column;

However, there are some difficulties in controlling u-turn car flow.