Ancient rock quarries in the surroundings of the ancient city of Anuradhapura, Sri Lanka provide evidence of quarrying by splitting stone blocks. Bedrock outcrops with natural foliations or weathering fractures were preferred starting points for stone quarrying. Additionally, fractures were created artificially, removing bedrock material by channeling or heating the bedrock surface and imposing pressure on the rock through percussion. These quarrying techniques are mainly based on a series of chiselled holes set along the part of the block to be separated. These holes frequently appear as half holes in the separated rock fragments. This investigation explores the working procedure related to the chiselled holes and wedge quarrying technique, and aims to identify the tools used and to estimate the time necessary for the splitting. Investigations are based on observations of a stone craftsman still applying traditional techniques of quarrying.

中文翻译：

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阿努拉德普勒历史悠久的采石技术民族考古学研究

斯里兰卡阿努拉德普勒古城周围的古老采石场提供了通过劈开石块进行采石的证据。具有天然叶理或风化裂缝的基岩露头是采石的首选起点。此外，裂缝是人为产生的，通过引导或加热基岩表面并通过冲击对岩石施加压力来去除基岩材料。这些采石技术主要基于沿待分离块体部分设置的一系列凿孔。这些洞经常在分离的岩石碎片中以半洞的形式出现。这项调查探讨了与凿孔和楔形采石技术相关的工作程序，旨在确定所使用的工具并估计劈裂所需的时间。