前言受过构造剪切的软弱夹层,往往在构造主剪切面附近形成泥化带。如果泥化带厚度很薄,在土质勘探和试验工作中容易被忽视;如果泥化带较厚,虽然在地质勘探时,容易察觉到泥化带强度与上下两侧岩体强度有差别,但泥化带界面强度最低这个特点,仍然容易被忽视。本文是通过葛洲坝水利枢纽基岩中,受过层内构造剪切作用的202号夹层,和受过层 Introduction Weakly intercalated shear layers often form mud bands near the main shear plane. If the thickness of the muddy zone is very thin, it is easy to be neglected in the exploration and experimental work of the soil. If the muddy zone is thick, it is easy to detect the difference between the intensity of the mud zone and the strength of the rock mass on the upper and lower sides during geological exploration The characteristic of the lowest strength of the mud zone interface is still easily overlooked. This article is through the Gezhouba Hydro Project basement rock, has been subjected to shear layer structure of the interlayer No. 202, and by the layer