Integral drilling and filling top-bottom high-pressure impact extrusion grouting system

Abstract

The invention discloses an integral drilling and filling top-bottom high-pressure impact extrusion grouting system, which is mainly applicable to the foundation reinforcement and anti-seepage grouting treatment on poor geologic bodies with loose and weak structures and the like. The grouting system comprises a drilling machine, a drilling rod and a high-pressure impact extrusion grouting head, wherein the drilling rod is connected onto a vertical shaft of the drilling machine, the high-pressure impact extrusion grouting head is connected onto the drilling rod and is used for hole drilling and grouting from top to bottom, a water faucet arranged at the upper part of the drilling rod connected onto the vertical shaft of the drilling machine is connected with a grouting pump through a drilling and filling slurry inlet pipe, the hole opening position of a drilling hole is provided with a hole opening return slurry collecting and settling device, and the return slurry after settlement treatment in the hole opening return slurry collecting and settling device is conveyed into a grouting slurry storage barrel through a drilling and filling slurry returning pipe via a mud pump for cyclic use. The grouting system has the advantages that the grouting full holes are continuous and uniform, the process operation is simple and convenient, and economy and environment protection are realized. The ideal grouting quality effect can be reached by adopting different hole array pitch hole distribution modes according to different engineering requirements.

Description

technical field [0001] The invention relates to the field of foundation reinforcement and anti-seepage treatment grouting, specifically a drilling and irrigation integrated, top-down, high-pressure extrusion grouting system, which is mainly suitable for foundation reinforcement and anti-seepage of unfavorable geological bodies such as loose and weak structures. Seepage grouting treatment can be widely used in hydropower, municipal, railway and highway bridges, ports, airports and other fields for foundation reinforcement and anti-seepage grouting treatment for loose, weak and other unfavorable geological bodies. Background technique [0002] There are huge thick calcareous conglomerate (K 1-1 ), mostly in the form of full to strong weathering, with a composite structure of fragments and gravel, uneven hardness and density, and a water permeability of 10-50 Lu with medium water permeability, belonging to Type IV ~ V rock mass. Chinese patent application CN102535472A disclose...

AI Technical Summary

Problems solved by technology

[0004] 1. It is easy to break down into sand and gravel during drilling, and the wall of the drilling hole is very unstable;

[0005] 2. Part of the orifice closed grouting is prone to splitting and it is difficult to pressurize;

[0006] 3. Grouting is prone to "horizontal cake" and the problem of invalid perfusion is prominent;

[0007] 4. It is difficult to construct a qualified curtain with conventional curtain cloth hole structure

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