文档介绍：several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measuremenb ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
(5)、日常检查：
①每年的汛期前或洪水后要对闸门的金属件（如螺栓）逐个进行检查，
遇螺母有松动时，应用扳手旋紧，以确保闸门的运转安全。
②闸门在运转中，主要是轨道与滚轮接触部分，需要加强检查。
③如遇飘浮物（竹、木、稻草等）的卡阻、阻塞，闸门则不能自动完全回关，出现漏水现象，此时需将闸门用手拉葫芦拉（吊）启；人工清除杂物后再回关。
⑤应检查通气孔是否正常，有无堵塞。上下游水位、流量、流态的检查观测等。
(6)、闸门检修：每隔二年左右要对闸门的金属件（除不要求或隐蔽部分）进行防锈油漆处理，以确保闸门长久运用；若止水橡胶损坏造成漏水，则拉启闸门更换止水橡胶。
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical bo