目前,泥浆护壁成孔超长混凝土灌注桩已广泛应用于基础工程领域,其长度愈来愈长,承载力要求也愈来愈大,加大了施工难度,常会引发一些质量问题。本文叙述其质量通病防治方法。１泥浆护壁成孔中的质量通病防治１．１地基土层硬性夹杂物欲将孔内硬性夹杂物排净,可采用带砂石泵和泥 At present, ultra-long concrete cast-in-place piles with mud retaining wall have been widely used in the field of basic engineering. Their length is getting longer and the bearing capacity requirements are getting bigger and bigger, which increases the difficulty of construction and often causes some quality problems. This article describes its quality control methods. 1 Prevention of common defects in the quality of the mud wall into the hole 1.1 Hard inclusions in the ground soil For the purpose of draining the hard inclusions in the hole, gravel pump and mud can be used.