CAJ | 학술논문

利用 CT 断面成像技术(X -ray CT)实时观察水-岩作用过程中泥岩细观结构的动态软化过程。通过对不同浸水时间泥岩试样的实时扫描观察，获得水作用下泥岩内部裂隙的时空演化特点，如初始裂隙效应、网状扩展行为、空间非均匀分布和典型活跃期。据此得出水-岩作用过程中泥岩遇水软化微观结构演化的三个环节：首先历史成岩过程形成的细观裂隙为后来的水分子侵入泥岩提供了初始通道；接着侵入的水分子通过物理和化学作用导致泥岩中黏土矿物的体积膨胀和可溶碳酸盐溶解；最后是不利的黏土矿物体积膨胀和可溶碳酸盐溶解衍生的力学效应导致裂纹的扩展和相互连通。
이용 CT 단면성상기술(X -ray CT)실시관찰수-암작용과정중니암세관결구적동태연화과정。통과대불동침수시간니암시양적실시소묘관찰，획득수작용하니암내부렬극적시공연화특점，여초시렬극효응、망상확전행위、공간비균균분포화전형활약기。거차득출수-암작용과정중니암우수연화미관결구연화적삼개배절：수선역사성암과정형성적세관렬극위후래적수분자침입니암제공료초시통도；접착침입적수분자통과물리화화학작용도치니암중점토광물적체적팽창화가용탄산염용해；최후시불리적점토광물체적팽창화가용탄산염용해연생적역학효응도치렬문적확전화상호련통。
The computerized tomographic scanner (CTS)was used to investigate the dynamic weakening process of the mudrock meso-structure when interacting with water.A series of real-time scanning tests were performed on the mudrock specimen soaked for different time.The space-time evolution characteristics of water-induced cracks inside mudrock,including the original fracturing effect,netty extension behavior,spatial nonuniformity distribution and active period of reaction,were exposed dynamically by CTS.The water-weakening process of the mudrock meso-structure can be divided into the following steps:firstly,inherent micro fractures provide the initial path for water to invade into unloaded mudrock;then the incursive water induces the volume increase of clay minerals and ion solution of carbonate through physical and chemical reactions;finally,the adverse mechanical impact derived from the volume expansion and solution of carbonate leads to the propagation and connection of cracks.