其实在电缆线路施工及验收规范中有明确的规定。 电缆标示桩的安放，直埋电缆在直线段每隔50~100m处、电缆接头处、转弯处、进入建筑物等处，应设置明显的方位标志或标桩。这样队内可以起到标识标示的作用，对外人员又可以起到警示惊醒的作用。
In fact, there are clear provisions in the specifications for cable line construction and acceptance. For the placement of cable marking piles, obvious azimuth signs or marking piles should be set up at 50-100 m intervals in the straight line section, at cable joints, turning points and entering buildings. In this way, the team can play the role of marking, and external personnel can play a warning and wake-up role.
为起到更好的警示作用我们建议如果是在人员流动性比较高的地方。推荐间距可以适当缩小一些。这样警示作用明显。
To serve as a better warning, we suggest that if it is in places with high mobility. Recommendation spacing can be appropriately reduced. This warning effect is obvious.