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1981年至1982年,我们对华东某些较典型的复杂地层进行了护壁堵漏的试验研究,1983年侧重对华东的复杂地层及其有效的护壁堵漏方法进行调研,现把有关情况综述如下。一、复杂地层分类归纳华东常见的复杂地层有以下四类: (一)遇水易水化、膨胀、坍塌的以水敏性为主的地层。这类地层包括含蒙脱石、伊利石、绿泥石、高岭石等粘土矿物的靡棱岩、泥质构造充填物、泥质胶结的角砾岩以及煤矿围
From 1981 to 1982, we carried out experimental studies on wall plugging in some of the more complex complex formations in East China. In 1983, we focused on the investigation of complex formations in East China and their effective wall plugging methods. The following is a summary of the situation . First, the classification of complex stratigraphic classification Common complex formations in East China have the following four categories: (A) in case of water easy to hydration, swelling, collapse of the water-sensitive layer. Such strata include extragranular rocks containing clay minerals such as montmorillonite, illite, chlorite, and kaolinite, muddy structural fillings, muddy cemented breccias, and coal mines