CN2123552U - Jet for constructing underground thick wall - Google Patents
Jet for constructing underground thick wall Download PDFInfo
- Publication number
- CN2123552U CN2123552U CN 92225760 CN92225760U CN2123552U CN 2123552 U CN2123552 U CN 2123552U CN 92225760 CN92225760 CN 92225760 CN 92225760 U CN92225760 U CN 92225760U CN 2123552 U CN2123552 U CN 2123552U
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- water
- nozzle
- pipe
- thick wall
- water nozzle
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Abstract
The utility model discloses a fixed jet for constructing underground thick wall which is composed of a protective pipe, a high-pressure water pipe, a compressed air pipe, a grout pipe, and a fixed jet head with a water nozzle, a seat of the water nozzle, and one end of jet head. The utility model is characterized in that fixed jet head is provided with 4-6 water nozzles which are arranged along two opposite directions, each direction is provided with three water nozzles, and the direction of the outlet of the compressed air is the same as the direction of the water nozzle at the same time so that outlet of the compressed air and the water nozzle can jet with a same shaft. The earth layer is cut, the grout is outflow flown out from the end of jet head which is positioned on the lower part of the water nozzle, the cut groove is filled to form a concrete wall with thick foundation. Compared with the prior art, the utility model has the advantages of improving cut width by over three times, improving the leak-proof effect of the underground thick wall being constructed, being used as an underground sheet pile, and preventing the foundation from sinking effectively.
Description
The utility model relates to decides the spray tool in a kind of high-pressure jet grouting technology, particularly relate to a kind of be used to build underground thick wall decide the spray tool.
In the prior art, high-pressure jet grouting technology is used for the water leakage problem of Ground Treatment, its spray tool is two-way single injector structure, by nozzle inject high pressure water as mine working power, pass to compressed gas again as deslagging power, fill the underground space of excavating out with cement paste simultaneously, become underground mud wall after solidifying.Wherein, three pipelines that are connected with water under high pressure, compressed gas and cement paste are contained in the steel pillar, and the pillar front end is installed and decided shower nozzle, during work, the steel pipe pillar is put into the deep hole that has bored, spray on one side, promote pillar gradually until the face of land on one side.Its weak point is, it can only be at the about 10 centimetres cement wall of underground construction, do not have the load-bearing of ground sheet pile and solves effect such as setting of ground, and the scope of application is less.
The purpose of this utility model is exactly in order to overcome above-mentioned weak point of the prior art, provide a kind of can make the spray wall as the ground sheet pile and prevent setting of ground be used to build underground thick wall decide the spray tool.
The purpose of this utility model can realize by following technical measures: it is made up of pillar, high-pressure water pipe, compression gas pipe, cement paste pipe and the shower nozzle of deciding that has water nozzle, water nozzle block and a nozzle end, it is characterized in that deciding shower nozzle four～six water nozzles are arranged, divide opposite both direction to arrange, each is towards two～three water nozzles are arranged, compressed gas outlet simultaneously and water nozzle are in the same way, make the coaxial injection of water under high pressure and compressed gas, cuts formation, cement paste then flows out from the nozzle end that is positioned at water nozzle below, be used to fill the groove that cuts out, to form the underground water mud wall.
During work, utilizing pillar will decide shower nozzle stretches in the deep hole that has bored, then, water under high pressure and the coaxial injection of compressed gas, utilize hydrodynamic(al) press to surpass the triple role of the active force that water wedge that the impact failure power of earth structure strength and fatigue failure power that aquapulse makes earth residual deformation and jet reaction force produced expands vertical soil at both sides, stratum to injection direction produces dissection, along with promoting slowly of spray tool, form the cutting groove, the cement paste then nozzle end below aqueous vapor flows out, the groove that filling is just forming, along with the lifting of deciding shower nozzle, the slurries of the groove bottom more and more far away apart from shower nozzle deposit retrogradation gradually and condense under the effect of top slurries static pressure.In operate as normal; the supply of cement paste is greater than the consumption of filling in the hole; overflow so have overfall, compressed gas not only plays protection water Shu Zuoyong, and a large amount of gas mixes in the middle of cement paste; its proportion is significantly reduced; particularly bubble rises, and adds that cement paste has viscosity, just is easy to formed stratum sandy soil particle when cutting groove is raised the band upper ground surface by the cylinder shape gap liter of pipeline and hole wall; the cement paste that the space of groove then Gong is advanced is filled, and forms cement board wall.
In the utility model, same towards (operating) water nozzle between angle can in 0～30 ° scope, change.(operating) water nozzle seat upper end connects high-pressure water pipe, following then minutes two～three water routes, and each water route end is installed two nozzles, and a side that utilizes is enclosed within the pillar, reaches the lower end and is fixed on the (operating) water nozzle seat is fixed.
The utility model compared with prior art has significant advantage: (1) is with the cutting width that substantially exceeds single nozzle towards the cutting width that has two～three water nozzles to spray two water under high pressure bundles, even surpass the cutting width of two single nozzles stacks, general with towards distance between the water nozzle about 10 centimetres, but can be sprayed into the cement wall of 40～60 cm thicks, be about about three times of single nozzle, and seldom accompany the silt in the stratum in the middle of the cement wall that forms, only can occur being mingled with on border and terminal transition position, body of wall is closely knit, every index such as compressive strength and rupture strength all surpasses the prior art level, its quality and weight capacity have all improved greatly, the underground solid cement wall that is sprayed into by the utility model not only has the effect of extraordinary water leakage, can also be as the ground sheet pile, prevent the subsidence of foundations, make the purposes of deciding sprinkling irrigation slurry technology that new expansion arranged.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the front view of a kind of embodiment of the utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1.
Fig. 1, the spray tool of deciding that underground thick wall is built in Fig. 2 and shown in Figure 3 being used to is one of embodiment of the present utility model, it is by steel pillar (1), high-pressure water pipe (2), compression gas pipe (3), cement paste pipe (4) and the shower nozzle (5) of deciding that has four water nozzles are formed, decide the outlet that compression gas pipe (3) is inserted on shower nozzle (5) top, compressed gas (3a) comes out to enter to decide the space of being come out at interval by dividing plate (9) in shower nozzle (5) top from tracheae, from sending with water nozzle (6) shower nozzle (5) the tube wall exit of deciding in the same way, shown in (3a) arrow, water nozzle block (7) is " individual " font structure, upper end UNICOM's high-pressure water pipe (2), the lower end is positioned on the dividing plate (9), two bifurcated water route ends are separately installed with two rightabout water nozzles (6), two with towards water nozzle (6) be arranged in parallel, promptly angle is 0 between two water nozzles.According to hydraulic principle, when water stream was laminar condition (streamline is parallel), it was smooth and easy to flow, do not have the counteracting of phase cross energy, during on the contrary as if the formation turbulent condition, then have eddy current to occur, increase in-fighting, thus with towards two water nozzle axis be arranged in parallel and should be preferred plan.By two parallel its cutting forces of water under high pressure bundle of water nozzle (6) ejection the super superposition of mutual reinforcement is arranged, although two parallel nozzle spacings have only 8 centimetres, 40～60 centimetres of the wall thickness Du Keda that is sprayed into are on average more than 30 centimetres.Cement paste pipe (4) stretches to the below of water, gas two pipes, makes cement paste (4a), flows out from nozzle end (8), fills established groove, forms cement wall.The cement wall entity in groove, can also form in the groove both sides, performances such as the load-bearing of cement wall, waterproof be had the effect of reinforcement because of the cement paste infiltration bonding course that the stratum infiltration forms outside groove.
Claims (4)
1, a kind of be used to build underground thick wall decide the spray tool, it is by pillar (1), high-pressure water pipe (2), compression gas pipe (3), cement paste pipe (4) and have water nozzle (6), the shower nozzle (5) of deciding of water nozzle block (7) and nozzle end (8) is formed, it is characterized in that deciding shower nozzle (5) four～six water nozzles (6) are arranged, divide opposite both direction to arrange, each is towards two water nozzles (6) are arranged, compressed gas (3a) outlet simultaneously and water nozzle (6) are in the same way, make water under high pressure (2a), with the coaxial injection of compressed gas (3a), cement paste pipe (4) then stretches to water, the below of gas two pipes makes then nozzle end (8) outflow of cement paste (4a).
2, according to claim 1 be used to build underground thick wall decide the spray tool, it is characterized in that deciding on the shower nozzle (5) same towards water nozzle (6) axis parallel.
3, according to claim 1 and 2 be used to build underground thick wall decide the spray tool, it is characterized in that parallel is that distance between per two water nozzles (6) is 8 centimetres.
4, according to claim 3 be used to build underground thick wall decide the spray tool, it is characterized in that deciding shower nozzle (5) has four water nozzles (6), with towards two water nozzles (6) axis parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92225760 CN2123552U (en) | 1992-06-27 | 1992-06-27 | Jet for constructing underground thick wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92225760 CN2123552U (en) | 1992-06-27 | 1992-06-27 | Jet for constructing underground thick wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2123552U true CN2123552U (en) | 1992-12-02 |
Family
ID=4967899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92225760 Granted CN2123552U (en) | 1992-06-27 | 1992-06-27 | Jet for constructing underground thick wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2123552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040701A (en) * | 2015-08-28 | 2015-11-11 | 中国水利水电第七工程局有限公司 | Water spraying type distribution hopper device for lattice type steel plate pile cofferdam |
-
1992
- 1992-06-27 CN CN 92225760 patent/CN2123552U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040701A (en) * | 2015-08-28 | 2015-11-11 | 中国水利水电第七工程局有限公司 | Water spraying type distribution hopper device for lattice type steel plate pile cofferdam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |