CN2555288Y

CN2555288Y - High efficiency slurry pouring pipe for foundation engineering

Info

Publication number: CN2555288Y
Application number: CN 02218841
Authority: CN
Inventors: 施健; 陈海波
Original assignee: NANSHUI SOIL CONSTRUCTION ENGINEERING Co JIANGSU
Current assignee: NANSHUI SOIL CONSTRUCTION ENGINEERING Co JIANGSU
Priority date: 2002-02-08
Filing date: 2002-02-08
Publication date: 2003-06-11
Anticipated expiration: 2012-02-08

Abstract

The utility model relates to a high efficiency slurry pouring pipe for foundation engineering, which is provided with a core pipe, an outer pipe, slurry stopping plugs fixed on both sides of a slurry outlet of the core pipe, a positioning stop blocks of the slurry stopping plugs, a bottom cover of the core pipe and a rubber valve of a slurry outlet of the outer pipe. The utility model is characterized in that the slurry stopping plugs form sliding fit with the inner wall of the outer pipe. The slurry stooping plugs form shapes of two circular tables which are superposed and butted at big bottoms, and the integral center has a cylindrical through hole. The shape of the slurry stopping plugs of the slurry pouring pipe can ensure that the slurry stopping plugs are pressed toward the inner wall of the outer pipe after extruded, and thus, the slurry stopping plugs can clog tiny gaps between the slurry stopping plugs and the inner wall of the outer pipe owing to expanding deformation. As a result, the slurry can be effectively controlled in the annular space between the upper slurry stopping plug and the lower slurry stopping plug, and thus, the slurry can be poured in the stratum successfully. When no pressure exists, the slurry stopping plugs can freely move up and down in the outer pipe along with the core pipe and can not be clamped in a connecting gap of two pipe joints. The utility model has the advantages of little friction force and high durability. Besides, the utility model raises work efficiency, reduces the condemnation factor of embedded slurry pouring pipes, saves engineering cost and shortens construction period.

Description

The efficient Grouting Pipe of foundation engineering

(1) technical field:

The utility model relates to a kind of Grouting Pipe that is used for ground and Foundation Design and dike, dam, foundation ditch antiseepage grouting construction device.

(2) background technology:

At present, the structure of grouting construction usefulness Grouting Pipe as shown in Figure 1, has core pipe 1, outer tube 2, be fixed on core pipe 1 grout outlet, 11 both sides and with outer tube 2 close-fitting stop grouting plugs 3, stop grouting plug position block 4, core pipe bottom 12, outer tube grout outlet 21 rubber valves 5, stop grouting plug 3 is up and down toroidal in opposite directions, the edge is point, and frictional force is bigger between outer tube 2 inwalls, the defective that causes has three: 1, make core pipe 1 in outer tube 2, move up and down very difficulty, operating efficiency is low, easily stuck in outer tube as unfavorable factor, the Grouting Pipe of imbedding in the stratum is scrapped, must bury Grouting Pipe again underground, increase engineering cost; 2, the edge of stop grouting plug 3 easily snaps in the gap at joint 13 of two Grouting Pipe outer tubes, causes the core pipe to move, and Grouting Pipe is scrapped, and burying Grouting Pipe again underground had both increased engineering cost, had delayed the duration again; 3, when work, stop grouting plug 3 is along with core pipe 1 moves around up and down in Grouting Pipe outer tube 2, serious wear, and application life is short, changes frequently, and work efficiency is low, the cost height.

(3) summary of the invention:

Technical problem to be solved in the utility model is, overcomes the shortcoming of prior art, provides a kind of stop grouting plug can the efficient Grouting Pipe of stuck, nonabradable foundation engineering.

This practical technical scheme that solves the problems of the technologies described above is as follows: the efficient Grouting Pipe of a kind of foundation engineering, have core pipe, outer tube, be fixed on stop grouting plug, stop grouting plug position block, core pipe bottom, the outer tube grout outlet rubber valve of core pipe grout outlet both sides, it is characterized in that stop grouting plug and outer tube wall are slidingly matched, it is shaped as the butt joint that coincides of two big ends of round platform, and integral central has cylindrical hole.

The shape of stop grouting plug can be utilized the slurries pressure that transmits in the core pipe in the utility model Grouting Pipe, press to outer tube wall after making it to be squeezed, and further dilatancy is tightly stopped up original micro gap between itself and the outer tube wall, slurries effectively are controlled at up and down in the annulus between two stop grouting plugs, can reach under 5MPa pressure not spillage, make slurries inject stratum, high efficiency smoothly; Because stop grouting plug and outer tube wall are slidingly matched, when not being subjected to core pipe entoplasm hydraulic coupling, stop grouting plug can move up and down freely in the Grouting Pipe outer tube with the core pipe, can not be stuck in the small gap at two union places, frictional force is little, and wearing and tearing are few, durable in use, reduce the number of times of changing stop grouting plug, improve work efficiency.Therefore the utility model Grouting Pipe can long-time continuous effectively be worked, and significantly reduces the scrappage of burying Grouting Pipe underground, saves engineering cost, shortens the construction period.

(4) description of drawings:

Fig. 1 is a Grouting Pipe structural representation in the prior art.

Fig. 2 partly cuts open schematic diagram for the efficient Grouting Pipe overall structure of the utility model foundation engineering.

Fig. 3 partly cuts open schematic diagram for Fig. 2 ends to starch the amplification of stopper shape.

Fig. 4 partly cuts open schematic diagram for embodiment ends to starch the amplification of stopper shape.

(5) specific embodiment:

With reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in detail.

As shown in Figures 2 and 3, the efficient Grouting Pipe of the utility model foundation engineering has core pipe 1, outer tube 2, is fixed on the stop grouting plug 3 of core pipe grout outlet 11 both sides, stop grouting plug position block 4, core pipe bottom 12, outer tube grout outlet 21 rubber valves 5, stop grouting plug 3 is slidingly matched with outer tube 2 inwalls, stop grouting plug 3 be shaped as the butt joint that coincides of 31, the 33 big ends of two round platforms, integral central has cylindrical hole 34, inserts for slip casting core pipe 1.Among the embodiment, the intersection that constitutes two round platforms 31,33 of stop grouting plug is that smooth transition connects, and helps reducing friction and plays only slurry effect.

In order further to improve the operating efficiency of the utility model Grouting Pipe, in embodiment as shown in Figure 4, further feature is: the big end that is shaped as two round platforms 31,33 of (1), stop grouting plug, coincides with the upper and lower end of a cylinder 32 and docks, integral central has cylindrical hole 34, and two round platforms of (2), formation stop grouting plug are that smooth transition is connected with the intersection of cylinder.This shape of stop grouting plug helps further reducing friction and effectively ends slurry.

Claims

1, the efficient Grouting Pipe of foundation engineering, have core pipe, outer tube, be fixed on stop grouting plug, stop grouting plug position block, core pipe bottom, the outer tube grout outlet rubber valve of core pipe grout outlet both sides, it is characterized in that stop grouting plug and outer tube wall are slidingly matched, it is shaped as the butt joint that coincides of two big ends of round platform, and integral central has cylindrical hole.

2, the efficient Grouting Pipe of foundation engineering according to claim 1, the intersection that it is characterized in that constituting two round platforms of stop grouting plug are that smooth transition connects.

3, the efficient Grouting Pipe of foundation engineering according to claim 1, the big end that is shaped as two round platforms that it is characterized in that stop grouting plug coincided with a cylindrical upper and lower end docks, and integral central has cylindrical hole.

4, the efficient Grouting Pipe of foundation engineering according to claim 3, two round platforms that it is characterized in that constituting stop grouting plug are that smooth transition is connected with the intersection of cylinder.