CN201221088Y - Enlarging type water jet groover used in thin wall underground continuous wall construction - Google Patents
Enlarging type water jet groover used in thin wall underground continuous wall construction Download PDFInfo
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- CN201221088Y CN201221088Y CNU2008200487629U CN200820048762U CN201221088Y CN 201221088 Y CN201221088 Y CN 201221088Y CN U2008200487629 U CNU2008200487629 U CN U2008200487629U CN 200820048762 U CN200820048762 U CN 200820048762U CN 201221088 Y CN201221088 Y CN 201221088Y
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Abstract
The utility model relates to a thin wall continuous concrete wall building technology and a device thereof in the building engineering, and provides a guiding and expanding type jetting groove forming machine used in the construction of thin wall continuous concrete wall building. Besides a box body, a water inlet pipe, a slag extraction pipe, an injection assembly and a cutter assembly of the ordinary jetting groove forming machine, the structure of the groove forming machine further comprises groove expansion cutters and guide blocks arranged at two ends of the box body. Two groove expansion cutters at each end of the box body and the guide block are arranged in the splayed shape. At the same time, transversal nozzle injection is added. The utility model is special for creating pores for second-stage groove section. The formed second-stage slotted holes are positioned at the part of the bellend at the periphery of the end of the wall section, so that the end of a first-stage in the continuous concrete wall is inserted into a groove of the end of the second-stage wall section to form slot connection. The ordinary plane lap joint of the first-stage and second-stage wall sections is replaced by the slot connection, thereby obviously improving the permeability resistance of connectors; and the grooving of the groove forming machine is accurate, so that the second-stage wall section and the first-stage wall section are in non-deviation connection, thereby improving the entire strength of the wall body and the permeability resistance.
Description
Technical field
The utility model relates to thin diaphragm wall building technology and the equipment in the construction work.
Background technology
The basic principle that water jetting is built thin-walled underground concrete diaphragm wall (hereinafter to be referred as " thin wall ") technology is: the jet assembly that high pressure slurry pump is delivered to water under high pressure in the capstan engine through water inlet pipe also penetrates by the vertical nozzle of the row of one on it, forms high-speed jet the stratum is cut.Meanwhile, the capstan engine generation impact force that pumps under the drive of main winch is by being arranged at the further die-cut stratum of cutter of capstan engine bottom outer rim.Thereby earth formation is damaged to form under the double action of jet and cutter and has the flat cylindricality slotted eye of setting size.Mixed to form water and soil slag slurry by jet and the die-cut dregs that gets off of cutter with water, under the effect of the impact of capstan engine and jet, be the state of rolling, utilize sand pump to extract the slag slurry out slotted eye through dreg-drawing pipe.Along with capstan engine drilling depth progressively, continue from the aperture to slotted eye supply slurry coat method and keep enough slurry face elevation to stablize slotted eye.Slotted eye carries out hole clearly after reaching projected depth, and clear hole finishes and in time adopts the catheterized reperfusion concrete, thereby builds up unit wall section.Separate the second stage of groove section during construction, elder generation's construction first phase groove section, treat to carry out the second stage of groove section construction again after adjacent two sections first phase wall section concretes reach certain intensity, the first phase wall section that the second stage of wall section of building up is adjacent with the left and right sides fuses, and a plurality of one, the second stage of unit wall section overlaps mutually and is linked to be complete concrete continuous wall.(referring to Fig. 1).
Thin wall thickness degree is generally 220mm～500mm, unit wall segment length 2～2.8m, and the degree of depth can reach 40m.Because body of wall is thin, the degree of depth is big, very easily fissure of displacement overlap joint between the generating unit wall section causes anti-seepage effect not reach the situation of requirement.Therefore, guarantee that the verticality and the dimensional accuracy of each unit wall section of building up is most important.At present, the design vertical precision (gradient) of domestic state-of-the-art water injection process for building wall machine is 1/300.That is to say, if the dark 30m of wall, wall thickness 300mm, grooving gradient are 1/300, the designing requirement of wall section size conforms, so in the dark bottom of 30m, the overlap joint thickness of adjacent wall section may have only 100mm, if have some link precision to fail to reach requirement in the construction process in addition, the wall section just take place probably overlap mass defects such as bad.
This shows that thin wall quality seriously is limited by the technology status and the technical level of operators of grooving equipment.How to adopt an effective measure guarantees the overlap joint quality of wall section, has been that numerous engineers and technicians made great efforts the difficult problem explored always for it since the water injection process for building wall technology was come out.Effectively break through this difficult problem, will open incomparable wide popularization and application space for the thin wall building technology of water jetting.
The utility model content
The purpose of this utility model is the widen type water jetting device that proposes use in a kind of thin diaphragm wall construction, it is exclusively used in the second stage of groove section making hole construction, formed the second stage of slotted eye can guarantee that the second stage of wall section does not have to depart from first phase wall section and be connected, improve the quality of thin concrete underground diaphragm wall greatly.
The purpose of this utility model adopts following technical scheme to realize:
The widen type water jetting device that uses during thin diaphragm wall is built, its structure composition includes casing, water inlet pipe, dreg-drawing pipe, jet assembly and cutting tool assembly, jet assembly and cutting tool assembly are located at bottom half, water inlet pipe is terminal to be connected with jet assembly, the dreg-drawing pipe mouth of pipe opens wide down, its end places bottom half, the side, two ends of casing is provided with wire brush, the casing top is provided with suspension ring and guide peg, it is characterized in that: tank ends is equipped with and expands the groove cutter, expand the oblique casing of groove cutter and stretch out certain-length outward, two of every end are expanded the groove cutter and form " eight " font layout.
Further scheme is: expand the groove cutter and be installed on tank ends by upper/lower positions, tank ends is equipped with by top and expands the guide pad that corresponding two groups of " eight " fonts of groove cutter are arranged, jet assembly increases the horizontal nozzle in two ends.
During construction, carry out the pore-creating of first phase groove section successively, first phase wall section becomes wall, the pore-creating of the second stage of groove section, the second stage of wall section to become four steps of wall, the phase section is divided and job practices is undertaken by prior art.
In first phase groove section pore-creating step, adopt the pore-creating of plain edition jetting capstan engine; Make to form and have flat cylindricality first phase slotted eye;
Become in the wall step to make in first phase wall section and form flat cylindricality first phase wall section by existing job practices concrete perfusion in the first phase slotted eye;
In the second stage of groove section pore-creating step, adopt the pore-creating of widen type water jetting device; Make and form flat cylindricality second phase slotted eye with bellend;
Become in the wall step to make in the second stage of wall section and form flat cylindricality second phase wall section with bellend by existing job practices concrete perfusion in the second stage of slotted eye;
The bellend of flat cylindricality second phase slotted eye partly is positioned at periphery, first phase wall section termination, thereby makes the second stage of wall section form the bellend of band groove, and the interior insertion slot type that forms of groove that the second stage of wall section termination is inserted in first phase wall section termination connects.
This capstan engine is exclusively used in the formation of the second stage of slotted eye, during operation, the capstan engine two ends are expanded the groove cutter and are cut the soil body in advance, be the open expansion groove of " eight " font cutter and slightly put in and stick first phase wall section end to first phase wall section, in the second stage of groove section pore forming process, utilize the die-cut effect of expanding the groove cutter to enlarge the slotted eye width of connecting portion, and corner cut is carried out in first phase wall section end repair the conformation of rules that makes its formation band chamfering, meanwhile open jetting function and make capstan engine follow-up pore-creating, the horizontal nozzle at capstan engine two ends and wire brush are cleaned cleaning to first phase wall section end.Along with whole capstan engine enters soil layer, guide pad begins to play a role, and it is that guide way plays guiding, positioning action to capstan engine with first phase wall section, the guiding capstan engine to depth direction drilling depth until satisfying degree of depth requirement.Formed the second stage of slotted eye has the expansion termination, and this bellend head part is positioned at periphery, first phase wall section termination.
After the second stage of slotted eye with expansion termination had been arranged, concrete perfusion just can form and have the second stage of wall section that groove shaped enlarges the termination in the second stage of slotted eye, had realized that the insertion slot type that insert in the groove of the second stage of wall section termination first phase wall section termination connects.
Be compared with the prior art, the utlity model has following characteristics and progress:
With one, the second stage of wall section become the insertion slot type connection by the common planar overlap joint, enlarged the entity volume and the overlap joint area of joint, prolonged seepage paths greatly, significantly improved the anti-permeability performance of joint.
2. lead expansion formula capstan engine with the first phase wall section of and arranged on left and right sides as guide way, formed the second stage of slotted eye can be guaranteed that the second stage of wall section does not have to depart from first phase wall section and be connected, avoided owing to one, the second stage of wall section generation perpendicularity deviation or dislocation cause overlapping bad may, guarantee the continuity of body of wall, improved the bulk strength and the impervious reliability of body of wall.
3. when the second stage of groove section is constructed, the expansion groove cutter of leading on the expansion formula capstan engine carries out top-down finishing to the form of first phase wall section end, excises water caltrop and ledge on it, forms the conformation of rules of band chamfering, improve the connection effect of wall section, guaranteed the total quality of diaphragm wall body of wall.
4. lead in the expansion formula capstan engine drilling depth process, the wire brush that is installed on its side, two ends pumps with capstan engine, assisting down of horizontal injection stream, has effectively removed the mud skin and the impurity of first phase wall section end face, has improved the compactness of joint.
5. the drilling depth operation of leading expansion formula capstan engine in fact also is a testing process, can check the verticality and the dimensional accuracy of first phase wall section from its drilling depth situation, find the defective that first phase wall section may exist early, be convenient in time adopt remedial measures, guarantee thin wall quality.
6. lead expansion formula capstan engine and can make multiple patterns such as linear pattern or arc according to actual needs,, be convenient to build arc, broken line shape, the thin wall of polygon to satisfy the concrete needs of different engineerings.
Description of drawings:
Fig. 1 thin diaphragm wall groove section sequence of construction and body of wall form schematic diagram;
Fig. 2 thin diaphragm wall building technology process chart;
The common jetting capstan engine of Fig. 3 structural representation;
The common jetting capstan engine of Fig. 4 structure vertical view;
Fig. 5 widen type water jetting device of the present utility model structural representation;
Fig. 6 widen type water jetting device of the present utility model structure vertical view;
Fig. 7 is of the present utility model when leading the operation of expansion formula capstan engine and the relative position schematic diagram of first phase wall section;
Of the present utility model one, the second stage of wall section connection diagram of Fig. 8.
The specific embodiment
Embodiment one
With reference to figure 5 and Fig. 6, the widen type water jetting device that a kind of thin diaphragm wall that the utility model proposes uses in building, the structure of this capstan engine as shown in Figure 5 and Figure 6, be to form by the transformation of existing common jetting capstan engine (as Fig. 3 and Fig. 4), it includes casing 1, water inlet pipe 4, dreg-drawing pipe 5, jet assembly 2 and cutting tool assembly 3, jet assembly 2 and cutting tool assembly 3 are located at bottom half, the end of water inlet pipe 4 is connected with jet assembly 2, dreg-drawing pipe 5 mouths of pipe open wide down, its end places casing 1 bottom, the side, two ends of casing 1 is provided with wire brush 9, casing 1 top is provided with suspension ring 6 and guide peg 11, it is characterized in that: add at casing 1 two ends and expand groove cutter 8, expand groove cutter 8 oblique casings and stretch out certain-length outward, two of every end are expanded groove cutter 8 and form " eight " font layout.The expansion groove cutter 8 of present embodiment is installed on casing 1 two ends by upper/lower positions, and casing 1 two ends are equipped with by top and expand the guide pad 7 that groove cutter 8 corresponding two groups of " eight " fonts are arranged; Jet assembly 2 increases the horizontal nozzle 21 in two ends, and arrow is represented jet water course or taken out the slag direction among the figure.
When building the thin concrete underground diaphragm wall construction, carry out the pore-creating of first phase groove section successively, first phase wall section becomes wall, the pore-creating of the second stage of groove section, the second stage of wall section to become four steps of wall, its phase section is divided and job practices is carried out (as Fig. 1 and Fig. 2) by prior art,
In first phase groove section pore-creating step, adopt plain edition jetting capstan engine (as Fig. 3 and Fig. 4) pore-creating; Make to form and have flat cylindricality first phase slotted eye;
Become in the wall step to make in first phase wall section and form flat cylindricality first phase wall section 10 by existing job practices concrete perfusion in the first phase slotted eye;
In the second stage of groove section pore-creating step, adopt widen type water jetting device (as Fig. 5 and Fig. 6) pore-creating (as Fig. 7); Make to form the flat cylindricality second phase slotted eye 20 ' (as Fig. 8) with bellend, the bellend part 201 ' of flat cylindricality second phase slotted eye is positioned at 101 peripheries, first phase wall section termination;
Become in the wall step to make by existing job practices concrete perfusion in the second stage of slotted eye 20 ' in the second stage of wall section to form the second stage of wall section 20 of the flat cylindricality with bellend, the bellend 201 of the second stage of wall section 20 has groove,
The interior insertion slot type that forms of groove that the second stage of wall section bellend 201 is inserted in first phase wall section 10 terminations 101 of formed thin diaphragm wall connects (as shown in Figure 8).
This widen type water jetting device described above is exclusively used in the formation of the second stage of slotted eye, in conjunction with reference to figure 5, Fig. 6 and Fig. 7, during operation, the expansion groove cutter 8 at capstan engine two ends is cut the soil body in advance, be the open expansion groove of " eight " font cutter 8 and slightly put in and stick first phase wall section 10 ends to first phase wall section 10, in the second stage of groove section pore forming process, utilize the die-cut effect of expanding groove cutter 8 to enlarge the slotted eye width of connecting portion, and corner cut is carried out in first phase wall section 10 ends repair the conformation of rules that makes its formation band chamfering, meanwhile open jetting function and make capstan engine follow-up pore-creating, cleaning is cleaned in the horizontal nozzle 21 at capstan engine two ends and 9 pairs of first phase walls of wire brush section, 10 ends.Along with whole capstan engine enters soil layer, guide pad 7 begins to play a role, and it is that guide way plays guiding, positioning action to capstan engine with first phase wall section 10, the guiding capstan engine to depth direction drilling depth until satisfying degree of depth requirement.
Claims (2)
1. the widen type water jetting device that uses during thin diaphragm wall is built, include casing, water inlet pipe, dreg-drawing pipe, jet assembly and cutting tool assembly, jet assembly and cutting tool assembly are located at bottom half, the end of water inlet pipe is connected with jet assembly, the dreg-drawing pipe mouth of pipe opens wide down, its end places bottom half, the side, two ends of casing is provided with wire brush, the casing top is provided with suspension ring and guide peg, it is characterized in that: tank ends is equipped with and expands the groove cutter, expand the oblique casing of groove cutter and stretch out certain-length outward, two of every end are expanded the groove cutter and form " eight " font layout.
2. widen type water jetting device as claimed in claim 1, it is characterized in that: expand the groove cutter and be installed on tank ends by upper/lower positions, tank ends is equipped with by top and expands the guide pad that corresponding two groups of " eight " fonts of groove cutter are arranged, jet assembly increases the horizontal nozzle in two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200487629U CN201221088Y (en) | 2008-06-04 | 2008-06-04 | Enlarging type water jet groover used in thin wall underground continuous wall construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200487629U CN201221088Y (en) | 2008-06-04 | 2008-06-04 | Enlarging type water jet groover used in thin wall underground continuous wall construction |
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| Publication Number | Publication Date |
|---|---|
| CN201221088Y true CN201221088Y (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200487629U Expired - Lifetime CN201221088Y (en) | 2008-06-04 | 2008-06-04 | Enlarging type water jet groover used in thin wall underground continuous wall construction |
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| CN (1) | CN201221088Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334449A (en) * | 2013-05-07 | 2013-10-02 | 中铁四局集团第二工程有限公司 | Square hole girdling cutter and method for performing holing construction of deep cutting stab-pile wall by utilizing same |
| CN104658625A (en) * | 2015-01-20 | 2015-05-27 | 广东省建筑工程集团有限公司 | Proton waste beam station construction technique |
| CN109487846A (en) * | 2018-12-27 | 2019-03-19 | 重庆长征重工有限责任公司 | Bar shaped deep trouth foundation excavation grouting cutter |
-
2008
- 2008-06-04 CN CNU2008200487629U patent/CN201221088Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334449A (en) * | 2013-05-07 | 2013-10-02 | 中铁四局集团第二工程有限公司 | Square hole girdling cutter and method for performing holing construction of deep cutting stab-pile wall by utilizing same |
| CN104658625A (en) * | 2015-01-20 | 2015-05-27 | 广东省建筑工程集团有限公司 | Proton waste beam station construction technique |
| CN109487846A (en) * | 2018-12-27 | 2019-03-19 | 重庆长征重工有限责任公司 | Bar shaped deep trouth foundation excavation grouting cutter |
| CN109487846B (en) * | 2018-12-27 | 2024-01-30 | 重庆长征重工有限责任公司 | Cutter for excavating and grouting strip-shaped deep groove foundation |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090415 |
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| CX01 | Expiry of patent term |