擋土支撐使用氣動鑽掘與傳統機具施作效益 比較研究

卵礫石層擋土柱開挖因為中部卵礫石地質硬度高，機械鑽掘一直無法有效施作，金門地質大都是花崗石岩層，營造廠正積極尋找新工法解決施工困境。本研究將對以機械開挖方式之氣動鑽掘施工法與傳統機具工法及人工開挖進行效益分析，分析內容利用人工擋土柱與人工井人工開挖及岩層爆破法與氣動鑽掘施工法的成本與安全性、施工速率、噪音計量進行分析，另與預壘樁工法之施速率及完整度作比較。介紹氣動鑽掘施工法為克服臺灣部份地區特殊之地下卵礫石層地質及金門岩石地質，地下開挖怯水、擋土樁基礎施工需採人工深入地下之特殊施工方式，開發出具備施工快速、安全、節能之工法。

關鍵字

擋土措施；氣動鑽掘；機械工法

並列摘要

Excavation of gravel layer retaining soil column Because of the high geological hardness of central gravel, mechanical drilling has not been effective, and the Jinmen geology is mostly granite rock formation. The construction plant is actively looking for new construction methods to solve the construction dilemma. This study will analyze the efficiency of pneumatic drilling construction method with traditional excavation method and traditional machine tool method and manual excavation. The analysis content uses artificial retaining column and artificial well artificial excavation, rock layer blasting method and pneumatic drilling construction method. The cost and safety, construction rate, and noise measurement are analyzed, and the rate and integrity of the pre-dwelling pile method are compared. This paper introduces the pneumatic drilling and excavation construction method to overcome the special underground gravel layer geology and Jinmen rock geology in some areas of Taiwan, and the special construction method of underground excavation of dredging and retaining pile foundation construction, which needs to be artificially deep underground, developed with rapid construction. Safety, energy saving work methods.