泥浆护壁工程桩孔深和沉渣厚度这两个指标可通过同一个测量过程得到。值得注意的是,这个测量过程要由两次测量组成,且这两次测量的时间一定要把握好,否则会导致测量误差过大,甚至测量无效。1.第一次测量是在清孔刚完成时, Slurry hole protection project pile hole depth and sediment thickness of these two indicators can be obtained by the same measurement process. It is noteworthy that this measurement process should be composed of two measurements, and these two measurements must take a good time, otherwise it will lead to measurement error is too large, or even invalid measurement. 1. The first measurement is completed in the hole just completed,