Oscillatory auger hole and dredging device

Abstract

The invention relates to a vibration helical drilling hole and dredging device for drilling hole of stratum and dredging, comprising power head, helical drilling bar, central guide tube, drill bit, expanding drill bit, casing pipe and expanding casing pipe so on. In working, the drilling bar and drill bit generate high-frequency micro-breadth vibration and liquefaction is generated between soil and helical face so that friction resistance is decreased and plugging in often is avoided. The helical drilling bar with the same diameter can be used to drill holes with different diameters by expanding diameter. The central guide tube is used to jet concrete while drilling, it is more important to carry dredging operation by no cycling liquid method. The vibration spiral is used to transport bottom mud and the water is not used as the medium for transporting the bottom mud. So secondary pollution for water is decreased greatly, the efficiency is improved and the energy consumption is decreased. It is provided with easy production, low cost for equipment and construction.

Description

technical field [0001] The invention relates to a "vibrating auger drilling and dredging device" which can be used not only for stratum drilling but also for dredging Background technique [0002] The existing long helical drilling machine uses screw conveying to transport the sediment out of the hole bottom, instead of using water as the circulating medium and pumps out the mud-water mixture, so it is called non-circulating fluid transportation, because the non-circulating fluid transportation meets the requirements of environmental protection , has been widely used, the existing problems are: [0003] (1) The frictional resistance between the sand and the spiral surface is very large, which not only consumes a lot of energy, but when the viscosity of the sand increases, it will often stick to the screw blades and cause blockage. The conveying stops and the drilling cannot be continued. It is very laborious and time-consuming to remove the soil that blocks the screw plug b...

AI Technical Summary

Problems solved by technology

[0012] For the problems existing in the prior art, the primary purpose of the present invention is to provide a device that can overcome the problems existing in the existing long auger drilling machine, that is: reduce the frictional resistance between the silt and the helical surface, and use the same diameter auger The rod can be expanded to drill holes with different diameters, which solves the problem of hole wall collapse when drilling in loose strata; the main purpose of the invention is to introduce the effective non-circulating liquid engineering method in geotechnical engineering into dredging operations, greatly Significantly reduce secondary pollution of water, improve construction efficiency, reduce energy consumption, and reduce costs

Images