Large-area blasting compaction treatment method of runway foundation

Abstract

The invention discloses a large-area blasting compaction treatment method of a runway foundation. The method aims at large-area treatment of a deep and thick layer stone riprap foundation, and throw-filled stone obtained after dredging is adopted as a hydraulic foundation used for a runway. Segmentation slope underwater blasting tamping and land drilling blasting tamping are combined, the magnitude and the position of land blasting action energy are reasonably designed, hole bottom lower stone is blasted and extruded, and the compaction function is achieved. Reasonable throw-filling parametersand blasting parameters are calculated and designed, large-area and large-working-face advancing can be achieved, and the construction progress is accelerated.

Description

technical field [0001] The invention belongs to the field of blasting and is suitable for large-area treatment of deep and thick riprap foundations, such as hydraulic foundations used as runways after dredging and replacing stone materials. Background technique [0002] The airport runway is a very important part of the airport. It covers a large area, but the land in coastal cities is a scarce resource. Therefore, generally coastal cities build airports near the sea, but the foundations in coastal areas are generally not Whether it stipulates that the construction of airports has problems such as long construction period, high cost, and difficult protection, and it often takes several years to be put into use. Soil foundation treatment takes the longest time in airport construction, accounting for more than half of the entire construction period, so the speed of soil foundation treatment directly affects the construction period of the airport. On the premise of ensuring th...

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Problems solved by technology

However, these treatment methods have a long construction period, require large-scale construction equipment, and the reinforcement depth is limited to a certain extent.

Especially when cofferdams and bank revetments need to be treated by squeezing silt, and when the runway area needs to be fully dredged and land-based backfilled for the foundation treatment of the channel groove area, the above-mentioned methods are greatly restricted, and it is difficult to meet the construction design requirements

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