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甑皮岩遗址是我国华南乃至东南亚地区一处重要的新石器时代洞穴遗址,遗址出土物迹甚多,现仍保存有约二分之一的文化堆积未发掘。目前文化层探坑底板已产生两处岩溶塌陷,严重威胁着遗址文化层的安全,塌陷治理已成为该遗址文化层保护的主要议题。塌陷治理采用充填法进行,方法是选取适当稠度的“M25～M50”砂浆充填上层溶洞,采用压力灌浆封堵下层岩溶管道,使文化层底板下形成一道厚约6～8m的无溶洞、溶缝、岩溶管道的较为完整的组合岩体,文化层底板将不再招受掏蚀、塌陷破坏,达到保护目的。
甑 Bianyan Site is an important Neolithic cave site in South China and even Southeast Asia in our country. There are many unearthed relics, and about one half of the cultural deposits are still undeveloped. At present, two karst collapses have occurred in the exploration floor of the cultural layer, posing a serious threat to the cultural safety of the site. Subsidence control has become a major issue in the cultural protection of the site. Subsidence treatment by filling method, the method is to select the appropriate consistency of the “M25 ~ M50 ” mortar filling the upper caverns, the use of pressure grouting to seal the lower karst pipe so that the culture floor to form a thick ca. 6 ~ 8m cavernous, Dissolution joints, karst pipe more complete combination of rock, culture floor will no longer recruit undercutting, collapse damage, to protect the purpose.