Abstract
Research carried out the highway subgrade disease treatment technology research in volcanic karst crater region through the freeway construction instance in Hainan. And research introduces the hazards of the volcanic karst geology to subgrade, put forward the subgrade disease treatment principles and methods in volcanic karst region, and also defines subgrade disease treatment construction technology program of the uncovered karst disease and the covered karst disease by the scene test of grouting treatment. Research provides the basis of subgrade disease treatment construction techniques and methods in volcanic karst crater region.
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