Abstract:
A large number of people live in areas with soluble rocks in China. Due to the existence of caves, fissures, holes, pipes and other erosion phenomena in soluble rocks, geological disasters such as mountain landslides and collapse, ground collapse, floods, etc, are often induced in the soluble rocks. It is important to study the chemical dissolution rate of soluble rocks to predict the development of karst and to guarantee the early identification and safety evaluation of karst geological disasters. Based on a large number of literature surveys, this paper comprehensively analyzes chemical dissolution methods obtained by scholars at home and abroad.(1)Chemical dissolution methods of soluble rocks are constantly maturing and improving, and the depth of research and the scope of application are continuously expanding.(2) There are various methods to study rock dissolution, which are mainly divided into indoor dissolution tests and field dissolution tests. Among them, the standard dissolution test strip method is widely used.(3) The principles and applicability of existing methods are different. It is necessary to use multiple test methods to gain relatively reliable test results.According to the research status of this scientific issue, the next step will focus on large-scale dissolution indoor test, establish model test systems to truly simulate the dissolution process of the soluble rock and further describe the dissolution process of soluble rocks in microscopic perspective. In addition, it is necessary to comprehensively use a variety of field test methods to carry out research to avoid or reduce the large errors that may be caused by a single test method, and establish correlations between field dissolution tests and indoor corrosion tests, so as to inferring results of large time scale tests in field through short-term indoor tests.