RESEARCH ON THE APPLICATION OF ROTARY BORED PILE CONSTRUCTION TECHNOLOGY IN KARST EXTREMELY DEVELOPEDAREAS
Based on the special geological conditions of extremely developed karst in Dabanqiao Town,Kunming,Yunnan,research on the construction technology of rotary bored pile was conducted.The key contents of drill bit adaptability and drilling parameter analysis were proposed by studying the construction parameters of rotary drilling rigs to ensure the efficiency and safety of construction.Specific measures have been proposed to solve construction problems in karst areas by combining two construction techniques of using double steel casing to treat soil rock interface collapse holes and geological drilling grouting to fill pretreated karst caves.
Rotary Bored Pile Construction TechnologyApplication ResearchKarst Extremely Developed AreasDabanqiao TownKunming,Yunnan
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