CN2276945Y

CN2276945Y - Prestress anchorage cable dual-sealing repeat high pressure slip casting tube

Info

Publication number: CN2276945Y
Application number: CN 96200600
Authority: CN
Inventors: 王宪章; 李伟文
Original assignee: Wang Jiwang Li Shuyan Niu Hong
Current assignee: Wang Jiwang Li Shuyan Niu Hong
Priority date: 1996-01-23
Filing date: 1996-01-23
Publication date: 1998-03-25
Anticipated expiration: 2006-01-23

Abstract

The utility model relates to a prestressed anchorage cable dual-seal repeated high pressure slurry casting pipe, which is used for the reinforcing construction of rock and soil. The utility model is provided with a PVC plastic pipe (4), and a plurality of secondary high-pressure slurry casting pinholes (11) which are sealed by rubber sleeves (3) are arranged in a slurry casting segment about every one meter and are sealed by rubber sleeves. Check rings (2) are arranged on both ends of the rubber sleeves, and a dual-seal check valve (1) is connected with the top end of the plastic pipe (4) and is composed of a check sleeve (6), a conical plug (7), a mud blocking rubber belt (8), a pressure spring (9) and a pressure regulating screw plug (10). First slurry outlets (12) and (13) are arranged in the check sleeve (6). The utility model has the advantages of simple structure, convenient operation and easy cleaning, ensures the quality of casting slurry and increases the anchoring force of anchorage cables.

Description

The prestress anchorage cable double seal repeats the high-pressure slip-casting pipe

The application belongs to rock-reinforcing equipment, particularly prestress anchorage cable high-pressure slip-casting equipment.

Present prestress anchorage cable high-pressure slip-casting equipment domesticly generally adopts simple and easy secondary high-pressure slip-casting pipe, inside and outside two pipes, and easy booster during slip casting, grouting quality can not guarantee; Abroad (as Japan) then adopts the high-pressure slip-casting pipe that high-pressure slip-casting core pipe and slip casting rifle head are arranged, though can guarantee grouting quality, structure is very complicated and price is very expensive.

The purpose of this utility model provides that a kind of structure construction is fairly simple, good airproof performance, low price, can guarantee that grouting equipment-prestress anchorage cable double seal of grouting quality repeats the high-pressure slip-casting pipe.

For achieving the above object, the application discloses a kind of new repetition high-pressure slip-casting pipe with double seal function.It has a PVC plastic pipe, in the slip casting section several secondary high-pressure slip-casting apertures is arranged every about 1 meter, and with the rubber sleeve sealing, there is ring washer at two of cover, connects a double seal flap valve on the plastic pipe top.It is made up of non-return cover, conical plug or ball plug, retaining earth rubber band, holddown spring, pressure regulation plug screw.The non-return cover is empty, on the inwall ring-shaped step is arranged, plastic pipe can be close to jacket wall and insert in the cover and be sitting on the step, middle part to the step of cover is a normal pressure grout outlet, a double seal plunger is placed on the said step blocks grout outlet, on the middle part sidewall of cover a plurality of grout outlets is arranged, by the outer retaining earth rubber band sealing of cover, the other end of cover is by the pressure regulation plug screw that is threaded, and it compresses conical plug or ball plug by holddown spring.

The application's Grouting Pipe has been saved the high-pressure slip-casting core pipe and the slip casting rifle head of external similar Grouting Pipe, and their structure is very complicated and price is expensive, by comparison, this Grouting Pipe simple structure, and cheap at least half, suitable with domestic simple and easy secondary high-pressure slip-casting pipe price, grouting quality can guarantee fully, and can repeat repeatedly slip casting, clean also very convenient.

Further specify the application with drawings and Examples below.

Fig. 1 is the overall schematic of the application's Grouting Pipe;

Fig. 2 is the sectional drawing that part i is amplified among Fig. 1;

Fig. 3 is the sectional drawing that part ii is amplified among Fig. 1.

Embodiment (Fig. 1 to Fig. 3): a prestress anchorage cable double seal repeats the high-pressure slip-casting pipe, a PVC plastic pipe 4 is arranged, every about 1 meter, bore several apertures 11 (secondary grout outlet) in the slip casting section, diameter is 5mm, aperture 11 usefulness rubber sealing boots 3 are covering, there is ring washer 2 at sealing shroud two, top at plastic pipe 4 connects (bonding or welding) double seal flap valve 1, it is by non-return cover 6, conical plug 7, retaining earth rubber band 8, holddown spring 9 and pressure regulation plug screw 10 are formed, non-return cover 6 is a hollow, on the inwall ring-shaped step is arranged, plastic pipe 4 can be close to jacket wall and insert in the cover and be sitting on the step.The middle part of non-return cover 6 is that 12, one double seal plungers 5 of grout outlet of leading to plastic pipe can be put in the plastic pipe 4 and are sitting in said jacket wall step and block grout outlet 12.On the sidewall of non-return cover 6 several grout outlets 13 are arranged also, by retaining earth rubber band 8 sealings that are bonded at the cover outside, silt particle can not enter flap valve when making site operation.The other end of non-return cover 6 is by pressure regulation plug screw 10 of screw thread precession, and this plug connects a conical plug 7 with holddown spring 9 can be with grout outlet 12 sealings.Thrust is adjusted in about 20N.

Double seal flap valve 1 is connected the back and together puts into the anchor cable hole with anchor cable with high-pressure plastic pipe 4, carry out common pressure grouting earlier one time, cement grout arrives bottom check valve 1 (not putting into double seal plunger 5 during common pressure grouting) by being pumped into high-pressure plastic pipe 4, when slurry is pressed the thrust that surpasses conical plug 7, conical plug 7 is opened, cement paste through grout outlet 12 and 13 and break through retaining earth rubber band 8 and enter bottom, anchor cable hole, is upwards discharged muddy water in the hole in turn, is full of the anchor cable hole until cement paste.Common pressure grouting pressure generally is lower than 0.1MPa, because this moment, the anchor cable aperture communicated with atmosphere, secondary grout outlet 11 bonds because of rubber sleeve 3, and its opening pressure is greater than 0.2MPa, so cement paste can be from grout outlet 11 discharges during common pressure grouting.

After one time common pressure grouting finishes, double seal plunger 5 is put into pipe 4 block grout outlet 12, clean high-pressure plastic pipe 4 with water under high pressure, cement paste is rinsed well in will managing.When treating that a common pressure grouting cement slurry intensity reaches 5MPa, the interior anchoring section of anchor cable and free section are separated with spacer, carry out secondary high-pressure slip-casting.Because grout outlet 12 has been plugged, cement paste can only be from aperture 11 ejections, when pressure surpasses the opening pressure of rubber sleeve 3, cement paste after 11 ejections of hole with the splitting of once grouting body.Since anchoring section with atmospheric isolation, the backlash of water under high pressure mud splitting once grouting body makes underground soft soil filling closely knit to weak area, thereby improves the anchored force of anchor cable.After secondary grouting pressure reached 5MPa, the voltage stabilizing number minute promptly finished secondary grouting.Afterwards, clean Grouting Pipe with water under high pressure again, in order to three times, four sub-high pressure slip castings.

Claims

1, the prestress anchorage cable double seal repeats the high-pressure slip-casting pipe, be used for the rock-reinforcing construction, it has a PVC plastic pipe (4), in the slip casting section several secondary high-pressure slip-casting apertures (11) are arranged every about 1 meter, seal with rubber sleeve (3), there is ring washer (2) at two of this cover, the top that it is characterized in that plastic pipe (4) connects a double seal flap valve (1), this valve is by non-return cover (6), conical plug (7), retaining earth rubber band (8), holddown spring (9) and pressure regulation plug screw (10) are formed, said non-return cover (6) is a hollow, on the inwall ring-shaped step is arranged, plastic pipe (4) can be close in the jacket wall insertion cover and be sitting on the step, the middle part of cover (6) is between the step being a normal pressure grout outlet (12), can put into for one and be sitting in the double seal plunger (5) that to block grout outlet (12) on the said step in the plastic pipe (4), the middle part of cover (6) is surveyed on the wall a plurality of grout outlets (13), by retaining earth rubber band (8) sealing that is bonded at cover (6) outside, the other end of non-return cover (6) is by the pressure regulation plug screw (10) that is threaded, and this plug compresses by holddown spring (9) can be with the conical plug (7) of grout outlet (12) sealing.