CN103758486A

CN103758486A - Pipeless grouting hole sealing device

Info

Publication number: CN103758486A
Application number: CN201410049959.4A
Authority: CN
Inventors: 李辉
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2014-02-13
Filing date: 2014-02-13
Publication date: 2014-04-30

Abstract

The invention discloses a pipeless grouting sealing device, which comprises a composite pipe, the composite pipe is provided with an interlayer along the axial direction and is divided into independent grouting pipelines and gas extraction pipelines; The inside is respectively covered with an inherent outer bag and an inner bag; the grouting pipelines of the composite pipe are respectively provided with grout outlets communicating with the outer bag and the inner bag; at the same time, the outer bag and the inner bag A constant pressure safety valve communicated with the grouting pipeline is arranged in the middle between the bags. The invention can integrate grouting and pumping, has a simple and reasonable structure, and has no redundant pipelines. It is suitable for cylindrical composite pipes, and can be well matched with drilling sets. It has the advantages of simple operation, good sealing effect, safety and reliability, and strong applicability. It can improve work efficiency and improve sealing effect.

Description

Without pipe injection hole sealing device

Technical field

The present invention relates to the hole sealing technology in the technical field of colliery, be specifically related to a kind of without pipe injection hole sealing device.

Background technology

Along with the high speed development of coal industry and coal production mechanization, dust hazard problem in coal production is still severe, and the sick incidence of disease of coal worker's pneumoconiosis is higher, and coal-dust explosion happens occasionally, Gas Outburst is a kind of serious natural calamity under coal mine, seriously restricts the safety in production in colliery.To rib or coal-bed flooding, it is the active and effective measure of one that prevents stope coal dust in coal mining manufacturing process.Tradition short-cut method is directly to adopt cement mortar sealing of hole, gas drainage pipe is inserted to sealing of hole section bottom timber wedge or the cotton yarn of boring and blocks then by cementing.Just can gas pumping after Behavior of Hardened Cement Paste slurry solidifies.By the cement mortar sealing of hole water filling length that expends time in, sealing effectiveness is not good enough, bears air pressure indifferent, and consume material is many, inconvenient operation.

Summary of the invention

The object of the invention is the problem and shortage existing for prior art, a kind of anti-spray orifice multistage pouch hole packer that can effectively prevent spray orifice is provided.

For achieving the above object, adopt following technical scheme: one, without pipe injection hole sealing device, comprises a clad pipe, is provided with vertically interlayer and is divided into independently grouting pipeline and gas pumping pipeline in this clad pipe; In clad pipe outside, certainly overlap respectively outside to inside intrinsic outer pouch and interior pouch; The grouting pipeline of described clad pipe is respectively arranged with the grout outlet being connected with outer pouch and interior pouch; Meanwhile, the medium position between described outer pouch and interior pouch is provided with the level pressure easing valve being communicated with grouting pipeline.

Be positioned on the grouting pipeline in outer pouch outside, be provided with one way valve.Be positioned on the grouting pipeline in pouch outside, be also provided with one way valve.

Or described outer pouch and interior pouch are ring seal structure, at its annular inner surface, be provided with the twitch one's mouth shape one way valve fixing with described grout outlet.

Beneficial effect: the present invention arranges interlayer in clad pipe, forms independently slip casting and gas pumping pipeline, thereby can be using slip casting and extraction as one, simple and reasonable, without unnecessary pipeline.Be applicable to cylindrical composite pipe, can be well mate suit with boring, have simple to operate, sealing of hole is effective, safe and reliable, applicability is strong, can increase work efficiency and improve sealing of hole effect.During slip casting, the pouch at two ends first expands, and forms outstanding shape, increases and the sealing performance of drill hole inner wall, and two ends pouch can be securely fixed in clad pipe outside, and while preventing sealing of hole, the excessive or spray orifice of gas pressure is released gas drainage pipe.If transform pouch as ring seal structure, the shape one way valve of twitching one's mouth can be directly set, simple in structure, effective, it is good that ring seal air bag prolongs radial dilatation after expanding, good sealing effect.

Accompanying drawing explanation

Fig. 1 is surface structure schematic diagram of the present invention;

Fig. 2 is the A-A cross-sectional view of Fig. 1;

Fig. 3 is the B-B cross-sectional view of Fig. 1;

Fig. 4 is the local structure for amplifying schematic diagram of Fig. 1;

Fig. 5 is one of slip casting view of Fig. 1;

Fig. 6 be Fig. 1 slip casting view two;

Fig. 7 be Fig. 1 slip casting view three;

Fig. 8 is and the cross-sectional view of the hard-wired another kind of pouch of clad pipe.

Number in the figure 1 is clad pipe, and 2 is slip casting Anlu, and 3 is gas pumping pipeline, and 4 is outer pouch, 5 is interior pouch, and 6 is level pressure easing valve, and 61 is the level pressure easing valve breaking, and 7 is grout outlet, 8 is one way valve, and 9 is boring, and 10 is slip casting permeable formation, and 11 is the shape one way valve of twitching one's mouth.

The specific embodiment

Embodiment 1: a kind of without pipe injection hole sealing device, referring to Fig. 1, Fig. 2 and Fig. 3, in clad pipe 1, be provided with vertically interlayer and be divided into independently grouting pipeline 2 and gas pumping pipeline 3; In clad pipe 1 outside, certainly overlap respectively outside to inside intrinsic outer pouch 4 and interior pouch 5; The grouting pipeline 2 of described clad pipe 1 is respectively arranged with the grout outlet 7 being connected with outer pouch 4 and interior pouch 5; Meanwhile, the medium position between described outer pouch 4 and interior pouch 5 is provided with the level pressure easing valve 6 being communicated with grouting pipeline 2.

Referring to Fig. 5, clad pipe 1 is inserted in the boring 9 in coal seam, to the slip casting path mesohigh slip casting of clad pipe 1, first slurries enter in outer pouch 4 and interior pouch 5 by slip casting path 1, two pouch spacing are 10 meters, slurries are propped up change greatly by outer pouch 4 and interior pouch 5, and two pouches expand and play the effect of blocking slurries, the front and back ends of sealing boring.Referring to Fig. 6, further increase grouting amount, when pressure reaches 1 MPa, easing valve is opened, and flows out slurries, and the space between two pouches of filling, as figure grade 61.Slurries enter in the space between outer pouch 4 and interior pouch 5.Referring to Fig. 7, more further increase after grouting amount, the slurries that leak outside go deep into inside, coal seam, form stable slip casting permeable formation 10.The outer section of Grouting Pipe is connected to stop valve, after slip casting completes, closes stop valve, prevents the excessive and release of slurries.

Embodiment 2: referring to Fig. 4, on embodiment 1 basis, being positioned on the grouting pipeline 2 in external capsule bag 4 outsides, be provided with one way valve 8.

Embodiment 3: on embodiment 2 bases, being positioned on the grouting pipeline in capsula interna bag outside, be also provided with one way valve.

Embodiment 4: referring to Fig. 8, on embodiment 1 basis, be ring seal structure by outer pouch 4 and interior pouch 5, be provided with the twitch one's mouth shape one way valve 11 fixing with described grout outlet at its annular inner surface.

Claims

1. A pipeless grouting sealing device, characterized in that: it includes a composite pipe, the composite pipe is provided with a partition along the axial direction and is divided into independent grouting pipelines and gas extraction pipelines; Cover the inherent outer bladder and inner bladder respectively from the outside to the inside; the grouting pipelines of the composite pipe are respectively provided with grout outlets communicating with the outer bladder and the inner bladder; at the same time, the outer bladder and the inner bladder A constant pressure safety valve communicated with the grouting pipeline is arranged at the middle position between the inner bladders.

2. The pipeless grouting sealing device according to claim 1, characterized in that: a one-way valve is provided on the grouting pipeline outside the outer bladder.

3. The pipeless grouting sealing device according to claim 2, characterized in that: the grouting pipeline outside the inner bladder is also provided with a one-way valve.

4. The tubeless grouting sealing device according to claim 1, characterized in that: the outer bag and the inner bag are annular closed structures, and a ring fixed to the grout outlet is arranged on the inner surface of the ring. Flat mouth check valve.