The factor that affect the well lane stability has primarily: Round the rock kind, well lane position, tunnel stalk line direction, cross section size, break rock method etc.
影响井巷稳定性的因素主要有：围岩性质、井巷位置、巷道轴线方向，断面尺寸，破岩方法等。
Deviate from embankment centre line, subside light to subside along cross section direction curve take the form of basin promptly.
越偏离路堤中线，沉降越小即沿横断面方向沉降曲线呈盆状。
The officers usually position themselves on overhead bridges that cross a major road or expressway with a clear line of sight in either direction.
警察通常位置对架空桥跨自己一条主要道路或高速公路有一个清楚的视线从两个方向。
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