Grouting device for controlling settlement of height railroad bed and grouting method

Abstract

The invention relates to a grouting device for controlling settlement of a height railway roadbed and a grouting method. The grouting device for controlling the settlement of the height railway roadbed comprises a pulping machine, a grouting pipe and a grouting pump, wherein the grouting pipe comprises an inner pipe and an outer pipe which sleeve with each other, the inner pipe and the outer pipe communicate with each other, and grout outlet holes are formed in the outer pipe; meanwhile, the inner pipe and the outer pipe are connected with the grouting pump through a communicating pipe and a circulating pipe correspondingly; meanwhile, the outer pipe further sleeves with an expansion sleeve, and the expansion sleeve is connected with the communicating pipe through an expansion pipe. According to the grouting device for controlling the settlement of the height railway roadbed, slurry is buffered through the design of the inner pipe and the outer pipe, so that the pressure change amplitude of the slurry is reduced; meanwhile, drainage is conducted to the far end of the grouting pipe through adjustment of the hole diameter and the distribution density of the grout outlet holes, and therefore uniform distribution of grout is guaranteed; the grouting pipe is fixed in a mounting hole after the expansion sleeves at the two ends of the grouting pipe are expanded, so that the vibration of the grouting pipe is further reduced, and the grouting quality is improved; an inlet and an outlet of the grout are formed in the top of the grouting pipe, the grouting pipe can be installed at any angle, and the application range of the grouting pipe is expanded.

Description

technical field [0001] The invention relates to the technical field of railway construction, in particular to a grouting device and a grouting method for controlling the settlement of a high-level railway embankment. Background technique [0002] The grouting method is to use the pressure (hydraulic pressure, air pressure) or electrochemical principle to uniformly inject the grout with gel ability into the gaps, cracks and cavities in the soil layer (or rock layer) through drilling holes, and the grout can fill, infiltrate and The original loose and broken rock (soil) layer is cemented into a whole by means of extrusion, and the physical and mechanical properties of the rock (soil) layer (such as the permeability of rock and soil layers, The strength and bearing capacity of rock and soil layers, the deformation of rock and soil layers, etc.) can be improved to form a structure with new structure, high strength, high waterproof performance and good chemical stability to meet ...

AI Technical Summary

Problems solved by technology

[0004] During the grouting process of the grouting equipment, the grouting pressure of the grouting machine is in a dynamic change process, which leads to a large change in the grouting pressure. Not only the vibration of the equipment is large, but also the grouting pressure cannot be accurately controlled, which is easy cause formation changes

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