贯通方差函数及贯通允许区间

The Function of Pierce Point’s Position and the Allowable Pierce Interval

巷道实际贯通点在水平重要方向上的贯通方差是贯通点在贯通直线巷道中位置的二次函数,本文推导了其函数式,且介绍了确定贯通允许区间的方法。

Pierce variance of actual pierce point in important horizontal direction is a function of pierce points's position in the road. This paper gives the formula of the function and introduces the method by which allowable pierce interval can be determined.