| The karst foundation is a more difficult processed engineering problem to investigate, designs and construction, the karst problem emergence not much to the past, as to the disaster research is more seldom seen, and the research is much concentrates to the aspects of the karst growth mechanism and prevention etc. In recent years, extended with the engineering scale and the infrastructure region, especially the enlargement developments of the water electric power station and the fire power station, met the complicated karst problem continuously. The karst geology term is a serious geology disaster in the foundation design and the construction. The Kanshan fire power station in Xuzhou of Jiangsu chooses the district of the superficial karst in growth, the size distributes and the space of the karst have certain regulation. In the region of karst, because of the cave with karst, it produces a important influence to the loading ability and the stability of the upper part construction, if the cave with karst locates the bottom of the foundation, in the function of the upper pressure, because the plank thickness of the cave with karst is not enough possibly, it will crush to pieces a plank, make the loading ability losing and cause the structural breakage in upper part.This text chooses the karst geology of he Kanshan fire power station in Xuzhou of Jiangsu a research object, we probe into the karst of the main factory premises area and the cooling tower area and the growth circumstance of the pieces of rock (scope, depth, growth regulation etc.)according to integrated geophysics of geology radar, high definition electricity method and the technique of the super CT, and we have introduced working principle, technical parameter and concrete application of geology radar, high definition electricity method and the technique of the super CT; according to drilling, we have further verified the growth circumstance of the superficial karst; and we have analyzed the influence of the superficial karst to foundation stability and foundation loading dint theoretically, aiming at the growth circumstance of the karst, we suppose different shapes of the karst hole, and adopt flexibility mechanics method to analyzing the danger of the superficial karst to the foundation; because of processed necessity of the superficial karst, we put forward to specific handle measures, and certain grouting pressure, proliferation radius etc. theoretically, these provide theoretical basis to grout filling handing measure. |
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