干缩开裂为潮湿环境考古遗址典型病害,为探究三星堆祭祀区地表干缩开裂病害程度与土的性质关联性,通过土的性质分析和病害量化表征评估,采用灰色关联度法分析了土的性质6项相关指标与裂隙发育程度和裂隙破坏程度两方面的关联度,探论了各项指标对病害程度的影响大小和作用,及通过土的性质干预实现病害防控的可行性。结果表明,土的性质相关指标与病害程度关联度大小排序依次为：黏粒含量＞黏土矿物含量＞塑性指数＞初始干密度＞初始含水率、有机质含量。黏粒含量、黏土矿物含量和塑性指数为影响病害发育的控制性指标,此类指标越大,病害程度越严重。初始干密度、初始含水率、有机质含量为影响病害发育的参考性指标,初始干密度越小,裂隙破坏程度相对严重。通过土的性质干预仅能一定程度控制病害发育,例如提高初始干密度改变裂隙形态。

Desiccation cracking is a typical deterioration in archeological excavation sites in a wet environment. To explore the correlation between the development degree of desiccation cracking and the soil properties in the Sanxingdui archeological site, the Grey Relation Analysis (GRA) is separately adopted to calculate the correlation degree between the selected six soil properties and the desiccation cracking development degree and the damage degree of fissures to the soil. This research aims to study the influence of each soil property on the development degree and to explore the feasibility of deterioration prevention and control by soil properties intervention. The result shows that the correlation degree of soil property and desiccation cracking development in descending order is as follows: the clay particle content > the clay mineral content > the plasticity index > the raw dry density > the raw moisture content, and organic content. The clay particle content, clay mineral content, and plasticity index are control indexes affecting the development of desiccation cracking, which show a positive correlation. While the raw dry density, raw moisture content, and organic content are relevant indices, in which the value of dry density is smaller, the damage degree of desiccation cracking is more serious. The soil properties intervention influences the desiccation cracking development degree to some extent, in the later practice reducing desiccation cracking by increasing dry density can be considered.

TU449

国家重点研发计划（2020YFC1522900）；四川省科技计划（2023YFS0463）；教育部人文社会科学研究项目（22YJCZH219）