中国岩溶地区面积广阔,岩溶地貌和现象类型多样。其中我国南方地区红层中出现的岩溶现象较为特殊:可溶岩类型复杂,成岩作用差,溶蚀机理多样,还易风化崩解。近年来红层岩溶塌陷多有发生,成为一个不可回避的问题。文章对我国红层岩溶与红层岩溶塌陷研究现状进行了系统梳理。红层岩溶主要存在于以可溶物质胶结的或含碳酸盐岩砾石的红色沉积岩为主的地区。红层岩溶的特点可以概括为:(1)可溶岩类型复杂,溶蚀机理多样;(2)成岩作用差,力学强度低,易风化崩解;(3)与地质构造密切相关。红层岩溶地区不但会出现覆盖型岩溶区的土层塌陷,而且由于其特殊的岩溶作用还可能出现基岩塌陷。根据红层岩溶地区地质结构,其塌陷模式可概化为红层上覆松散层塌陷、红层溶洞顶板垮塌以及红层整体垮塌三类。今后有必要从红层溶蚀特点和红层岩溶塌陷模式出发,开展红层溶蚀对岩溶塌陷作用机理的专项研究,为红层地区岩溶塌陷地质灾害的风险评估和防治处理提供科学依据和技术支撑。
The karst area in China is spacious and the karst types are d red beds area of south China are special, ln the region, the occurrence of iverse. The karst phenomena in the karst collapse has become a problem that cannot be avoided in recent years. So it is necessary to make a systematic analysis of the present situation of the research on the red bed karst and associated karst collapses, particularly occur in red-bed area in the country. Red-bed karst mainly occurs in South China where the red clastic rocks are cemented with solu- ble substances or contain carbonate gravels. The characteristics of the karst red beds can be summarized as follows: 1) karst types are complex and their dissolution mechanisms are diverse; 2) the red rock is not fully cemented, with low mechanical strength and being easy to be weathered and collapse; 3) it is closely related to the geological structure. In karst red bed area, not only soil collapse but also the bedrock collapse may oc- cur. According to the geological structure, the red beds collapse mode can be generalized into three catego- ries: the overburden layer collapse, the red beds cave roof collapse, and the collapse of the whole red beds. At present, the research on the karst collapse of the red beds is relatively limited. It is necessary to study the mechanism of the soluble red beds on the karst collapse in the future. Further, control measure of the red beds corrosion on the karst collapse development and distribution and impact of the soluble red beds on the karst collapse development and evolution need to be investigated, which will provide scientific basis and tech- nical support for risk assessment and prevention treatment of the karst collapse geological hazard in red beds areas.