CN2466348Y

CN2466348Y - Small bore rigid external valve one-way type sublevel grouting device

Info

Publication number: CN2466348Y
Application number: CN 01216082
Authority: CN
Inventors: 张民庆; 丁锐; 南琛; 洪开荣
Original assignee: SCIENCE INST OF TUNNEL ENGINEERING ADMINISTRATION MINISTRY OF RAILWAYS
Current assignee: SCIENCE INST OF TUNNEL ENGINEERING ADMINISTRATION MINISTRY OF RAILWAYS
Priority date: 2001-01-17
Filing date: 2001-01-17
Publication date: 2001-12-19
Anticipated expiration: 2011-01-17

Abstract

The utility model discloses a thin calibre rigid outer valve unidirectional type sectionally slurry pouring device, and is mainly composed of a slurry pouring pipe, a slurry pouring core pipe, a push rod and a slurry stopping plug, wherein, the front end of the slurry pouring pipe is of a sharp-pointed structure, and the pipe circumference body of slurry pouring pipe has slurry overflow hole. The front part of the slurry pouring core pipe is positioned in the slurry pouring pipe. The push rod and the slurry stopping plug are sheathed on the slurry pouring pipe, and are fixed through fixing nuts and push rod nuts. The utility model is characterized in that an air drill is used for drilling holes, and the slurry pouring pipe is arranged through the push technology. The utility model has the advantages that large drilling machines are not needed during constructions, the sectionally slurry pouring operation of stratum layers can be efficiently realized, the slurry pouring and construction efficiency of engineering can be enhanced, and engineering difficulty and construction cost can be lowered.

Description

The outer valve one-way fashion sublevel grouting device of thin bore rigidity

The utility model belongs to grouting equipment, relates generally to a kind of outer valve one-way fashion sublevel grouting device of thin bore rigidity that is used for tunnel and ground worker's engineering.

In tunnel and underground engineering construction, at soft stratum, for example saturated, dynamic aquifer sand layer will adopt slurry injection technique to handle, in order to the improvement ground.Extensive both at home and abroad at present this type of technology that adopts, mainly by French Suo Lietanxiu company's invention " Suo Lietanxiu worker's method ", this technology at first adopts rig to follow the pipe bit hole, get into till the degree of depth of regulation always, the plastic pipe of band hoop is inserted in the back, tube drawing injects cement swell soil liquid on one side on one side, forms the sclerine that contacts with soil layer around pipe.But it also comes with some shortcomings in actual applications, and when particularly constructing in the horizontal direction, " Suo Lietan body worker method " used plastic pipe is because intensity, rigidity are lower, have to thicken tube wall and rib, like this, increased Grouting Pipe external diameter and bore diameter, brought difficulty to boring; Sleeve pipe follow-up boring needs main equipment, has increased engineering cost, also the engineering construction of incompatibility light section; Grouting Pipe is installed the technological requirement height, and is careless slightly, easily causes water burst, gushes the sand accident.

The purpose of this utility model provides the outer valve one-way fashion sublevel grouting device of a kind of thin bore rigidity simple in structure, easy to operate, easy grasp.

The purpose of this utility model adopts following technical scheme to realize: it is mainly by the rigidity Grouting Pipe, slip casting core pipe, push rod and stop grouting plug constitute, the front end of Grouting Pipe is the sharp cone distal of sealing, the Guan Zhouti of Grouting Pipe is provided with the slurry hole of overflowing, the front portion of slip casting core pipe places in the Grouting Pipe, the end is provided with screw thread, top stem casing is on slip casting core pipe, the one end is positioned at Grouting Pipe, the front end stop grouting plug that stop grouting plug is enclosed within slip casting core pipe holds out against push rod by packing ring, and fix by the set bolt of slip casting core tube end, fix a push rod nut on the slip casting core pipe outside the slurry pipe, the push rod nut holds out against push rod.

Excessive slurry hole on the described Grouting Pipe is inner small and outside big step, bonding one deck thin plate in its collar extension.

From the above mentioned, the utility model is simple in structure, and Grouting Pipe adopts the welded steel pipe processing and fabricating, and rigidity is big, can take the wind drill hole, and jacking technology is laid Grouting Pipe, is difficult for causing water burst, gushes the sand accident; In the construction, do not need large-scale drilling machine, bring convenience to construction; Owing in the slurry hole collar extension that overflows, be bonded with thin plate,, can guarantee that slurries enter the stratum by the slurry hole of overflowing, and water in the stratum and sand can not enter Grouting Pipe so the effect of sleeve valve pipe is arranged; The position in the slurry hole of overflowing can be set as required, can realize the segmenting slip casting requirement, solve extra large land effectively and handed over mutual alluviation, the changeable homogeneity that waits grouting and reinforcing under the complex conditions of geology, improve the integral reinforcing effect on stratum, be not only applicable to saturated, dynamic Heshui layer of sand, can be widely used in other weak stratum simultaneously; Because Grouting Pipe adopts the welded steel pipe processing and fabricating, but both factory makes, but field machining again; During use, easy to operate, grasp easily, safe and reliable, can effectively improve engineering mortar depositing construction efficient, reduce engineering construction difficulty and construction cost, thereby obtain slip casting effect preferably.

In conjunction with the embodiments the utility model is further specified.

Fig. 1 is the utility model structural representation.

Grouting device shown in the figure is mainly by Grouting Pipe 3, slip casting core pipe 1, push rod 4 and stop grouting plug 6 constitute, Grouting Pipe 3 adopts welded steel pipe to process, its front end is the sharp cone distal of sealing, the Guan Zhouti of Grouting Pipe 3 is provided with the slurry hole 8 of overflowing, excessive slurry hole 8 is inner small and outside big step, bonding one deck thin plate in its collar extension, it has the effect of one way valve, during Grouting Pipe 3 jackings, both can prevent that sealing and sand entered in it, can guarantee again that slurries can enter into the stratum by the slurry hole 8 of overflowing, the two ends of slip casting core pipe 1 communicate, its front portion is positioned at Grouting Pipe 3, and the end is provided with screw thread, back termination grouting pipeline.Push rod 4 is enclosed within the outside of slip casting core pipe 1, and the one end is positioned at Grouting Pipe 3; Stop grouting plug 6 is positioned at the front end of slip casting core pipe 1, and its hold-down nut 7 by packing ring 5, push rod 4 and slip casting core pipe 1 leading section is fixing and spacing.Fix a push rod nut 2 on the slip casting core pipe 1 outside Grouting Pipe 3, a stem nut 2 holds out against push rod 4 and is positioned at Grouting Pipe 3 end outward, and push rod 4 is fixed between push rod nut 2 and the stop grouting plug 6, is used for fixing stop grouting plug 6.

During use, at first Grouting Pipe 3 is headed into the stratum desired location, on slip casting core pipe 1, load onto stop grouting plug 6, nut 7, push rod 4 and push rod nut 2, the slip casting core pipe 1 of loading onto stop grouting plug 6, nut 7, push rod 4 and push rod nut 2 is sent to relevant position in the Grouting Pipe 3, push rod nut 2 on the core pipe 1 turns clockwise, stop grouting plug 6 is expanded, only starch effect to reach.Connect grouting pipeline, slurries are injected in the Grouting Pipe 3 along slip casting core pipe 1 during slip casting, and the thin plate in slurry hole 8 collar extensions that overflow is washed open under slurries pressure, and thin plate is washed open under slurries pressure, and slurries are injected in the stratum along the slurry hole 8 of overflowing.Sectional slip casting as required, after first section slip casting finished, the push rod nut 2 on the inhour rotation core pipe 1 made stop grouting plug 6 return to original state with core pipe 1, retreats into the excessive slurry of second layer hole site, carries out second section slip casting, so goes down and finishes up to whole slip casting section.

Claims

1, the outer valve one-way fashion sublevel grouting device of a kind of thin bore rigidity, it is characterized in that: mainly by Grouting Pipe (3), slip casting core pipe (1), push rod (4) and stop grouting plug (6) constitute, Grouting Pipe (3) front end is the sharp cone distal of sealing, the Guan Zhouti of Grouting Pipe (3) is provided with the slurry hole (8) of overflowing, the front portion of slip casting core pipe (1) places in the Grouting Pipe (3), its end is provided with screw thread, push rod (4) is enclosed within on the slip casting core pipe (1), push rod (4) one ends are positioned at Grouting Pipe (3), stop grouting plug (6) is positioned at the front end of Grouting Pipe (3), stop grouting plug (6) is by packing ring (5), push rod (4), and it is fixing by the hold-down nut (7) of slip casting core pipe (1) end, fix a push rod nut (2) on the slip casting core pipe (1) outside Grouting Pipe (3), push rod nut (2) holds out against push rod (4).

2, the outer valve one-way fashion sublevel grouting device of thin bore rigidity according to claim 1, it is characterized in that: the excessive slurry hole (8) of described Grouting Pipe (3) is inner small and outside big step, bonding one deck thin plate in its collar extension.