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黄龙钙华边石坝退化特征及其修复保育材料研究
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引用本文:闵世杰,代群威,崔杰,李琼芳,党政,罗尧东,董发勤.黄龙钙华边石坝退化特征及其修复保育材料研究[J].中国岩溶,2021,(1):99-104. MIN Shijie,DAI Qunwei,CUI Jie,LI Qiongfang,DANG Zheng,LUO Yaodong,DONG Faqing.Study on degradation characteristics and restoration and conservation materials of travertine marble dam,Huanglong[J].Carsologica Sinica,2021,(1):99-104.
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作者单位
闵世杰 西南科技大学环境与资源学院 
代群威 西南科技大学环境与资源学院/西南科技大学核废物与环境安全国防重点学科实验室 
崔杰 西南科技大学环境与资源学院 
李琼芳 西南科技大学生命科学与工程学院 
党政 西南科技大学应用技术学院 
罗尧东 西南科技大学环境与资源学院 
董发勤 西南科技大学环境与资源学院 
基金项目:国家自然科学基金面上项目(41877288,41973053,41572035)
中文摘要:钙华边石坝是地表岩溶景观的重要组成部分,易受到环境因素的影响而发生退化现象。本文分析了黄龙钙华边石的退化特征,制备了以废弃钙华为原料的修复保育型块,探讨了助剂添加量对型块强度的影响和型块在液相条件下的溶出特征。结果表明:边石坝退化特征主要包括水量减少而造成的剥落、裂缝、坍塌、孔洞等现象,急待修复;钙华型块是良好的边石坝生态修复材料,不同助剂添加量对型块强度的影响不一,将钙华促生剂控制在10%~30%,增强剂添加量控制在0.1%以内时,型块能同时具有良好的抗折、抗压强度;液相溶出实验显示溶出液pH和Ec均随时间延长而降低,这一现象可能与碳酸钙沉积有关。研究结果可为人工介入岩溶景观的修复保育提供理论支撑。
中文关键词:岩溶景观  退化特征  修复保育材料  钙华型块
 
Study on degradation characteristics and restoration and conservation materials of travertine marble dam,Huanglong
Abstract:The travertine rimstone dam is an important part of the karst landscape on the surface, and it is susceptible to degradation due to environmental factors. In this study,the degradation characteristics of travertine rimstone dam were analyzed, the restoration and conservation blocks made of waste travertine materials were proposed and prepared,and the influence of additive amount on the strength of the blocks and the dissolution characteristics of the blocks in liquid phase were discussed. The results show that,(1) the degraded characteristics of the rimstone dam mainly include the spalling, cracks, collapsed holes and other phenomena caused by the decrease in water volume, which is urgently to be repaired.(2)The restoration and conservation block of travertine type is a good ecological restoration material for rimstone dams,and different additives have different effects on the strength of the block.The block has good flexural and compressive strength when the travertine growth promoter is controlled at 10%-30% and the amount of enhancer is controlled at 0.1%.(3)The liquid phase dissolution experiment showed that the pH value and Ec of the dissolution solution decreased with time,which may be related to the deposition of calcium carbonate . The study results can provide theoretical support for artificial intervention in the restoration and conservation of karst landscapes.
keywords:karst landscape,degradation characteristics,repair conservation materials,travertine type block
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