Research Of Foundation Treatment Technology In Karst Area Of Hang-jin-gu Highway

The highway engineering limestone cave processing question continuously for engineering pays attention. The strong tamping law punishes the non- saturated soil, the saturated soil has yielded the certain result, but the strong tamping law processing limestone cave some people have not carried on the attempt until now. Because our country is vast in territory .The geological structure is complex, adds the highway construction to advance triumphantly. The highway engineering construction supposes the technology and the quality requirement also needs to promote day by day, this was driving the people carry on the exploration in this domain construction craft. Its achievement has the enormous promotion and the application value, therefore the topic research has the extremely vital significance.This article through carries on the geological physical prospecting, the strong tamping design to the western Zhejiang area highway roadbed limestone cave, tries tamping the determination construction parameter, at the same time to tries tamping the area to carry on the dynamic sounding, the auspicious thunder surface wave test, the compound ground dead load experiment, experiment and so on in-depth shifting of earth test, obtains tries tamping the parameter, thus comprehensively instructs the construction. Looked from the examination result that, the effect was extremely ideal, had achieved the anticipated goal, has solved the karst land sector road building technology difficult problem, obviously enhanced the roadbed compactness, the integrity and the uniformity, and had the very big enhancement to the road service performance.Meanwhile through the dichroa febrifuge port especially big bridge pile foundation limestone cave construction craft research, to the karst stratum bridge drill hole filling pile technology, has conducted the system research, in view of karst geology characteristic, Adopted sneaked in craft technology and so on Cheng Kong, solved in the drill hole construction the flood peak to maintain, to prevent collapsed the hole, the concrete constructs the size to drain and so on the question.