ISSN 1000-3665 CN 11-2202/P

    可溶岩化学溶蚀试验方法研究综述

    Advances in the chemical dissolution methods of soluble rocks

    • 摘要: 可溶岩中存在大量的溶洞、溶隙、溶孔、管道等溶蚀现象,易造成山体崩滑、地面塌陷、洪涝等灾害,因此研究可溶岩的化学溶蚀速率可以预测岩溶的发展趋势,为岩溶地质灾害早期识别与安全评价提供保障。文章在大量文献调研的基础上,综合分析国内外学者围绕可溶岩化学溶蚀试验方法取得的成果,得到以下认识:(1)可溶岩化学溶蚀试验方法不断成熟和完善,研究深度和应用范围逐步拓展。(2)可溶岩化学溶蚀的测定方法很多,根据试验开展的条件主要分为室内溶蚀试验和野外溶蚀试验,其中标准溶蚀试片法以其操作简单被广泛采用。(3)现有的可溶岩化学溶蚀测定方法的原理及适用性不同,需要综合运用多种试验手段得出相对可靠的试验结果。根据这一科学问题的研究现状,下一步应着重开展大尺寸可溶岩室内溶蚀试验研究,建立模型试验系统真实模拟野外可溶岩的溶蚀过程,并加强从微观角度刻画可溶岩的溶蚀过程。另外需要综合运用多种野外试验方法开展研究,避免或降低单一试验方法可能带来的较大误差,建立野外溶蚀试验和室内溶蚀试验的关联,以期通过室内短期的试验研究推测野外长时间尺度下的溶蚀状态。

       

      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.

       

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