求翻译：桩基提前在枯水期进行施工，先施工桥台处钻孔桩，然后分段按流水线法推进。钻进过程中要防止出现塌孔、卡钻、掉钻等现象。本标段桥位处地质层面主要为砂岩、中风化岩层等，故本标段施工时，采用冲击钻机施工。是什么意思？

Advance the construction of pile foundation in the dry season, the first construction of bored piles at the abutments, and sub-line method according to advance. During drilling to prevent the collapse of the hole, sticking, out drilling and so on. The bridge tenders at the geological level, mainly s

Advance piling works in trickles abutments construction on a first-come-first-served basis, and the bored piles, and then sub-paragraphs are pipelined law. Drilling into the process, it is necessary to prevent a collapse off drilling, drilling holes, cards, and the like. This icon is located in the

The pile foundation ahead of time carries on the construction in the dry season, constructs first the abutment place drill hole pile, then partition according to running water long-base method advancement.Sneaks in the process to have to prevent appears collapses the hole, jams, falls drills and so

Pile foundation construction in dry season ahead, before construction of bridge bored pile, and then segment by line by promoting. To prevent collapse during drilling hole, sticking, drilling and so on. This section of main bridge located in geological levels such as sandstone, weathered rock, so th

Advance the construction of pile foundation in the dry season, the first construction of bored piles at the abutments, and sub-line method according to advance. During drilling to prevent the collapse of the hole, sticking, out drilling and so on. The bridge tenders at the geological level, mainly s