Karst cave treatment method and system in karst geology foundation pile construction

By drilling injection holes on the rock layer, injecting solid filler into the cave and forming an annular isolation cavity, and then injecting liquid filler, the problems of high cost of cave treatment and complex construction in the existing technology are solved, and efficient and economical cave reinforcement effect is achieved.

CN119686327APending Publication Date: 2025-03-25ROAD & BRIDGE INT CO LTD +1
0 Cites 0 Cited by

Patent Information

Application Number
CN202510039212.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-10
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

When handling caves during karst geological foundation pile construction, there are problems such as difficult, high cost and complex construction. Especially when encountering beaded caves, small diameter steel casings need to be added to further increase costs.

Method used

A number of injection holes are drilled in the area corresponding to the cave on the rock formation, and solid filling materials are injected into the cave through these injection holes, and the filling materials are diffused through impact operations to form an annular isolation cavity. Subsequently, a liquid filler is injected into the cave in the annular isolation cavity until it is filled.

Benefits of technology

Through this method, the reinforcement area and engineering volume are reduced, the filling material is saved, the cost is reduced, and the compactness and support stability of the annular isolation cavity are improved. Compared with the follow-up treatment method of the cartridge, it has significant cost, construction period and safety advantages.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a karst cave treatment method and system in karst geology foundation pile construction. The method comprises the steps that a plurality of material injection holes are annularly drilled in the peripheral edge position in the area, corresponding to a karst cave, of a rock stratum at intervals; solid filling materials are injected into the karst caves through the material injection holes until the solid filling materials at the corresponding positions of the material injection holes reach the top areas of the karst caves; impact operation is carried out on the solid filling materials at the corresponding positions of the material injection holes, so that the solid filling materials are diffused in the karst cave; the injection and impact operations of the solid filler are repeated in sequence until the karst cave corresponding to the injection hole is filled with the solid filler and an annular isolation cavity is formed; and a grouting hole is drilled in the area, corresponding to the annular isolation cavity, of the rock stratum, and liquid filler is injected into the karst cave in the annular isolation cavity through the grouting hole till the karst cave in the annular isolation cavity is filled with the liquid filler. According to the method, the filling material is saved and the cost is reduced while the reinforcement effect of the karst cave below the foundation pile is ensured.
Need to check novelty before this filing date? Find Prior Art