The Study On The Safety Operation Technique Of Karst Pond Based On The Chain-cutting Disaster Mitigation In The Headstream Theory

Abstract:Karsts were widely distributed in China, as leakage accident of tailings pond in karst region occurred repeatedly, more and more attention was gotten to the safety technique research of karst ponds. Based on disaster chain theory, the major disaster accidents of karst ponds were investigated and analyzed in this paper, and four kinds of disaster chain model were summarized. Starting from the principle of chain-cutting disaster mitigation, geological exploration of karst ponds、karst blocking measures and security management of karst ponds were discussed and demonstrated with examples, and many kinds of chain-cutting disaster mitigation methods and measures to fundamentally prevent and treat karst pond disasters were proposed. The works included in this article were as follows.(1)Based on disaster chain theory, disaster chain effects caused by mud leakage of karst ponds were analyzed, and disaster chain models of mud leakage were established. Combined with chain-cutting disaster mitigation in the headstream theory, chain-cutting disaster mitigation methods and measures were proposed accordingly.(2)Geological exploration technique of karst ponds was introduced in this paper, and combined with engineering experience, four necessary phases of geological exploration were discussed. And then, the experience of geological exploration of karst pond engineering and the universal law of karst developmental were summarized.(3) The safe thickness of roof of karst cave and the collapse high were theoretically analysed in this paper, and the plugging measures for various karsts and arrangement form of aerating system were discussed. And then, combined with the practical situation of a mud pond, the typical treatment schemes of karst disaster mitigation were discoursed detailedly.(4)Combined with the running conditions of domestic karst ponds, this article summarized the experience of secure use and management of karst ponds. A example of mud leakage was deeply analysed and the treatment methods after karst pond leakage were discussed.