CN110206483B - Soil-absorbing type full-casing pore-forming device and using method thereof - Google Patents
Soil-absorbing type full-casing pore-forming device and using method thereof Download PDFInfo
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- CN110206483B CN110206483B CN201910585615.8A CN201910585615A CN110206483B CN 110206483 B CN110206483 B CN 110206483B CN 201910585615 A CN201910585615 A CN 201910585615A CN 110206483 B CN110206483 B CN 110206483B
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 239000002689 soil Substances 0.000 claims abstract description 93
- 239000004575 stone Substances 0.000 claims abstract description 71
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 238000010276 construction Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000011435 rock Substances 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 11
- 239000013049 sediment Substances 0.000 claims description 11
- 239000000314 lubricant Substances 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 64
- 238000005553 drilling Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010009 beating Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011499 joint compound Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010024796 Logorrhoea Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000011799 hole material Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/003—Drilling with mechanical conveying means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
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- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a soil-absorbing type full-casing pore-forming device and a use method thereof, wherein the soil-absorbing type full-casing pore-forming device comprises: the sleeve is driven to move towards the earth layer to form a containing hole; and the suction mechanism generates negative pressure in the inner cavity of the sleeve and discharges soil and stone silt in the sleeve so as to reduce the frictional resistance of the soil and stone silt to the inner wall of the sleeve. Thereby avoiding the problems of high construction cost and long construction period of the full-casing pore-forming device in the prior art.
Description
Technical Field
The invention relates to the technical field of full casing pipe hole forming, in particular to a soil-suction type full casing pipe hole forming device and a using method thereof.
Background
At present, a full casing drill method is mostly used for hole forming in pile foundation construction, and hole forming in the full casing drill method is mainly aimed at construction of loose strata such as cohesive soil, sand soil and the like. In the prior art, as shown in fig. 5, in a full casing drilling machine, a full casing hole forming device is used to drive a casing 101 to dig a hole in a rotary drilling manner, and then a grab bucket 102 for removing slag is used to take away soil in the full casing in a rotary drilling manner or in a threaded drilling manner. The construction method utilizes a rotary hydraulic device to enable the steel sleeve to rotate to enter the soil layer, so that the frictional resistance between the steel sleeve and the soil layer is overcome, and the steel sleeve is pressed in while rotating. However, the above operation method needs to use a grab bucket and other soil taking equipment to take soil during the hole digging process, the grab bucket needs to repeatedly go in and out of the casing to take soil, the continuity of the soil taking process is poor, and the problems of slow casing drilling and stratum tunneling speed, high construction cost and long hole forming and pile forming time are caused.
Disclosure of Invention
Therefore, the invention aims to provide a soil-absorbing type full casing pipe pore-forming device and a using method thereof, so as to solve the problems of high construction cost and long construction period of the full casing pipe pore-forming device in the prior art. Therefore, the invention provides a soil-absorbing type full-casing pore-forming device, which comprises:
the sleeve is driven to move towards the earth layer to form a containing hole;
and the suction mechanism generates negative pressure in the inner cavity of the sleeve and discharges soil and stone silt in the sleeve so as to reduce the frictional resistance of the soil and stone silt to the inner wall of the sleeve.
The suction mechanism comprises a suction pipe which extends into the inner cavity of the sleeve and is used for discharging earth and stone sediment, and in the pore-forming process, the depth position of the suction port on the suction pipe is not less than the depth position of the sleeve entering the earth and stone layer.
In the pore-forming process, the material suction port extends out of the lower end of the sleeve.
The material suction port is located on the lower end face of the material suction pipe, and/or the material suction port is located on the side wall of the lower end of the material suction pipe.
The suction mechanism comprises a driving part for driving the material suction pipe to ascend and descend and a soil suction device for forming negative pressure in the material suction pipe to suck soil, stone and sediment.
The material suction pipe is connected with the suction mechanism, and the lower end face of the material suction pipe is of a tooth-shaped structure.
Soil-absorbing type full-casing pore-forming device comprises a casing driving mechanism, wherein the casing driving mechanism drives the casing to move towards the direction of the terra layer, so that the casing sinks into the terra layer to form a containing hole.
The sleeve driving mechanism comprises a vibration hammer, and the vibration frequency of the vibration hammer is 25Hz-60 Hz.
Soil-absorbing type full casing pipe pore-forming device still includes tube extractor, the tube extractor with the sleeve pipe links to each other for supplementary pile driver tube extractor of beating.
Inhale full sleeve pipe pore-forming device of soil formula, still including extending to high-pressure squirt in the sleeve pipe, high-pressure squirt's lower extreme is located the cover pipe inner chamber, high-pressure squirt's lower terminal surface is higher than sheathed tube lower terminal surface.
The use method of the soil-absorbing type full-casing pore-forming device comprises the following steps:
s1, mounting the sleeve on the pile driver;
s2, performing negative pressure suction on the soil-rock layer in advance through the driving suction mechanism to form a pit on the soil-rock layer, driving the sleeve to sink into the soil-rock layer to form a containing hole, and discharging soil, rock and silt in the inner cavity of the sleeve through the suction mechanism;
s3, sinking the reinforcement cage to the bottom of the accommodating hole;
and S4, pouring concrete into the accommodating hole, lifting the sleeve pipe to the completion of the concrete pouring pile, and pulling out the sleeve pipe.
The use method of the soil-absorbing type full-casing hole-forming device comprises the step S2 of driving the casing to sink into the soil stone layer to form a containing hole, and the step S further comprises the following steps: and continuously adding lubricant to the surface of the sleeve during the sinking process of the sleeve.
Step S4 of using the soil-suction type full casing hole-forming device, wherein the lifting of the casing comprises the following steps: the sleeve is driven by the pipe extractor to assist in pipe extraction of the pile driver.
A use method of a soil-absorbing type full-casing pore-forming device is applied to a water area construction environment and comprises the following steps:
s1, mounting the sleeve on the pile driver;
s2, jetting high-pressure water towards the soil and stone layer through a high-pressure water gun to cut the soil and stone layer, discharging soil and stone silt in the inner cavity of the sleeve through the suction mechanism, and simultaneously driving the sleeve to sink and enter the soil and stone layer to form a containing hole;
s3, removing the suction mechanism;
s4, implanting the precast pile into the accommodating hole;
and S5, pulling out the sleeve and grouting into the accommodating hole.
The suction mechanism is a mud pump.
The technical scheme of the invention has the following advantages:
1. the invention provides a soil-absorbing type full-casing pore-forming device, which comprises: the sleeve is driven to move towards the earth layer to form a containing hole; and the suction mechanism generates negative pressure in the inner cavity of the sleeve and discharges soil and stone silt in the sleeve so as to reduce the frictional resistance of the soil and stone silt to the inner wall of the sleeve. The sleeve pipe sinks the in-process, is in with suction mechanism simultaneously produce the negative pressure in the sleeve pipe inner chamber, will the intraductal soil stone silt of sleeve is discharged, can be effectively with the intraductal soil grit of sleeve etc. by timely suction ground through above-mentioned mode, make the interior wall of sleeve pipe not have earth, just so can eliminate the frictional force of the interior wall of sleeve pipe soil, make the sleeve pipe sink the in-process and only have the stratum frictional force of sleeve pipe outer wall, through the frictional resistance that reduces the interior wall of sleeve pipe, make the sleeve pipe sink the in-process total resistance and reduce for the sleeve pipe sinks speed, reduce the pore-forming cost, improve pore-forming efficiency.
2. The soil-absorbing type full-sleeve pore-forming device provided by the invention is characterized in that the suction mechanism comprises a material absorbing pipe which extends into the inner cavity of the sleeve and is used for discharging soil and stone silt, and the depth position of a material absorbing port on the material absorbing pipe is not less than the depth position of the sleeve entering the soil and stone layer in the pore-forming process. The material suction pipe sinks to the lower end part of the sleeve, so that the material suction pipe can suck soil and stone silt on the surface of the soil and stone layer before the sleeve, a pit is formed in the soil and stone layer, the sleeve shakes nearby the pit in the descending process of the sleeve to form a collapsed soil slope, the soil and stone silt forming the collapsed soil slope can be effectively sucked by the material suction pipe to be discharged, and the problem that large soil and stones are generated in the descending process of the sleeve and are difficult to be discharged by the material suction pipe is solved.
3. According to the soil-absorbing type full-casing pore-forming device provided by the invention, in the pore-forming process, the material-absorbing opening extends out of the lower end of the casing. Above-mentioned inhale the material mouth and extend to sleeve pipe lower extreme outside can make the inhale the material mouth of inhaling of material pipe more be close to the soil stone layer thereby inhale away more soil and stone silt in soil stone layer surface, guarantee soil and stone silt by timely suction ground, make the soil stone layer soft and form a darker pit, make the sleeve pipe sink the in-process and receive littleer resistance, the sleeve pipe can hit the garrulous pit edge fast for the sleeve pipe sinks speed, reduces the pore-forming cost, improves pore-forming efficiency.
4. According to the soil-absorbing type full-sleeve pore-forming device provided by the invention, the material absorbing port is positioned on the lower end surface of the material absorbing pipe, and the material absorbing port positioned on the lower end surface of the material absorbing pipe can quickly and effectively form a pit on a soil stone layer before the sleeve, so that the resistance force on the sinking of the sleeve is reduced; the material suction port is located on the side wall of the lower end of the material suction pipe, and the material suction port located on the side wall of the material suction pipe can effectively discharge soil, stone, silt and sand in the inner cavity of the sleeve out of the sleeve in the sinking process of the sleeve, so that the frictional resistance of the inner wall of the sleeve is effectively reduced, the total resistance in the sinking process of the sleeve is reduced, the sinking speed of the sleeve is accelerated, the hole forming cost is reduced, and the hole forming efficiency is improved.
5. The soil-absorbing type full-casing pore-forming device provided by the invention has the advantages that the suction mechanism comprises a driving part for driving the material-absorbing pipe to ascend and descend, the driving part is a telescopic hydraulic pushing mechanism for driving the material-absorbing pipe to ascend and descend, and the position of a material-absorbing opening of the material-absorbing pipe can be effectively realized through the mechanism, so that a user can adjust the depth position of the material-absorbing opening according to different use conditions, and the use flexibility of the soil-absorbing type full-casing pore-forming device is improved.
6. The soil-absorbing type full-casing pore-forming device provided by the invention has the advantages that the material absorbing pipe is connected with the absorbing mechanism, and the lower end surface of the material absorbing pipe is of a tooth-shaped structure. Above-mentioned dentate structure inhale the material pipe can help sinking to a certain extent and inhale broken stone layer of material pipe, improves the pore-forming efficiency of device.
7. The soil-absorbing type full-casing pore-forming device provided by the invention comprises a casing driving mechanism, wherein the casing driving mechanism drives the casing to vibrate up and down towards the direction of the earth stone layer so as to enable the casing to sink into the earth stone layer to form a containing hole. Thereby the sleeve pipe is vibrated from top to bottom by the ground high frequency of drive and is carried out drilling work, and attract mechanism and sleeve pipe synchronous cooperation, attract mechanism can cooperate the sleeve pipe effectively and discharge earth and stone silt on the earth and stone layer and then form a pit, and its border position can take place fragmentation under sheathed tube shock excitation effect of above-mentioned pit, can reduce the sheathed tube degree of difficulty that descends through above-mentioned pit effectively, reduce the frictional force that eliminates the intraductal wall earth and stone silt of sleeve pipe even, make the sleeve pipe sink the in-process and only have frictional force between sleeve pipe outer wall and stratum, make the sleeve pipe sink the in-process total resistance and reduce, accelerate the sleeve pipe speed of sinking, reduce the pore-forming cost, improve pore-forming efficiency.
8. The soil-absorbing type full-sleeve hole forming device provided by the invention further comprises a pipe extractor, wherein the pipe extractor is connected with the sleeve and used for assisting in pipe extraction of a pile driver. The pipe extractor is matched with the outer diameter of the sleeve, the assistance is provided for the sleeve in the sleeve extracting process, and especially when the sleeve is in a state from a static state to a rising state, the resistance borne by the sleeve is larger, so that the pipe extractor can effectively assist in pipe extraction of a pile driver under the matching of the pipe extractor.
9. The invention provides a use method of a soil-absorbing type full casing pipe pore-forming device, wherein in step S2, negative pressure suction is performed on a soil and stone layer in advance through a driving suction mechanism to form a pit in the soil and stone layer, meanwhile, the casing pipe is driven to sink and enter the soil and stone layer to form a containing hole, and soil and stone silt in the inner cavity of the casing pipe is discharged through the suction mechanism. In the above steps, because the suction mechanism can perform negative pressure suction on the soil and stone layer before the sleeve, a pit can be formed in the soil and stone layer, and only the soil and stone at the edge of the pit needs to be crushed in the descending process of the sleeve, so that the descending resistance of the sleeve is effectively reduced. And broken soil, stone, mud and sand can form broken small soil slopes at the edges of the inner cavity of the sleeve in the descending process of the sleeve, and the loose small soil slopes can be quickly sucked out of the ground by the suction mechanism in time, so that the soil, stone and sand free on the inner wall of the immersed tube are in contact with the small soil slopes. The casing pipe sinking process only has stratum friction of the outer wall of the casing pipe, the casing pipe sinking speed is accelerated, the hole forming cost is reduced, and the hole forming efficiency is improved.
10. The invention provides a use method of a soil-absorbing type full-casing pore-forming device, wherein the driving casing pipe to sink into a soil stone layer to form a containing hole further comprises the following steps: and continuously adding lubricant to the surface of the sleeve during the sinking process of the sleeve. The lubricant is a chemical lubricant such as water or lubricating oil. The lubricant reduces the frictional resistance between the outer wall of the sleeve and the soil layer, the liquefiable stratum around the outer side of the sleeve can be liquefied by the high-frequency excitation of the vibration hammer, and the frictional resistance of the outer side wall of the sleeve can be effectively reduced by the addition of water and the liquefaction of the stratum, so that the sinking speed of the sleeve is accelerated.
11. The invention provides a use method of a soil-absorbing type full-casing pore-forming device, which is applied to a water area construction environment and comprises the following steps: s1, mounting the sleeve on the pile driver; s2, spraying high-pressure water towards the terrane layer through a high-pressure water gun, discharging soil, stone and sediment in the inner cavity of the sleeve through the suction mechanism, and simultaneously driving the sleeve to sink and enter the terrane layer to form a containing hole; s3, removing the suction mechanism; s4, implanting the precast pile into the accommodating hole; and S5, pulling out the sleeve and grouting into the accommodating hole. The suction mechanism is a slurry pump. Under the water area construction environment, the mud pump can effectively cooperate with a high-pressure water gun to cut a soil and stone layer so as to form a containing hole in the underwater environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of a soil-absorbing type hole-forming device for a full casing pipe, in which a material-absorbing pipe extends out of the lower end of the full casing pipe;
FIG. 2 is a schematic structural view of a soil-absorbing type hole-forming device for a full casing pipe, wherein the soil-absorbing pipe is flush with the lower end of the full casing pipe;
FIG. 3 is a schematic diagram of a hole forming apparatus of the soil-absorbing full casing pipe hole forming apparatus according to the present invention;
FIG. 4 is a schematic structural view of the soil-sucking type full-casing hole-forming device with a high-pressure water gun according to the present invention;
fig. 5 is a schematic structural diagram of a full casing pore-forming device in the prior art.
Description of reference numerals:
1-a sleeve; 2-a terra-cotta layer; 3-containing holes; 4-a material sucking pipe; 5-a material sucking port; 6-tube drawing device; 7-high pressure water gun; 101-a cannula; 102-grab bucket.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The soil-absorbing type full casing pipe pore-forming device provided by the embodiment comprises, as shown in fig. 1 and fig. 3
The sleeve 1 is driven by the pile driver to vibrate and sink towards the earth stone layer 2 to form a containing hole 3, and the vibration frequency of the sleeve 1 is 28 Hz;
the suction mechanism generates negative pressure in the inner cavity of the sleeve 1, discharges soil, stone and sediment in the sleeve 1 to reduce the frictional resistance of the soil, stone and sediment to the inner wall of the sleeve 1, can effectively suck soil, gravel and the like in the sleeve 1 out of the ground in time through the suction mechanism, ensures that no soil or little soil exists on the inner wall of the sleeve 1, ensures that only the stratum friction force of the outer wall of the sleeve 1 exists in the sinking process of the sleeve 1, reduces the total resistance in the sinking process of the sleeve 1 by reducing the frictional resistance of the inner wall of the sleeve 1, accelerates the sinking speed of the sleeve 1, reduces the hole forming cost and improves the hole forming efficiency; the suction mechanism comprises a suction pipe 4 extending into the inner cavity of the sleeve 1 and used for discharging soil, stone and sediment, a driving part used for driving the suction pipe 4 to ascend and descend, and a soil suction device which is used for forming negative pressure in the suction pipe 4 to suck the soil, the soil suction device is a vacuum compressor. The material suction pipe 4 is provided with a material suction port 5, the material suction port 5 is respectively positioned on the lower end surface of the material suction pipe 4 and the side wall of the lower end of the material suction pipe 4, the material suction port 5 positioned on the lower end surface of the material suction pipe 4 can quickly and effectively form a pit on the terrazzo layer 2 before the sleeve 1, so that the resistance force of the sleeve 1 which is driven to sink by high-frequency up-and-down vibration is reduced, and the edge position of the pit can be cracked under the shock action of the sleeve 1; above-mentioned be located inhale on the 4 lateral walls of material pipe inhale material mouth 5 can sink the in-process at sleeve pipe 1 effectively with the earth and stone silt discharge sleeve pipe 1 in the sleeve pipe 1 inner chamber, reduce the frictional resistance of sleeve pipe 1 inner wall effectively, make sleeve pipe 1 sink the in-process total resistance and reduce for sleeve pipe 1 sinks speed, reduces the pore-forming cost, improves pore-forming efficiency. Moreover, the material absorbing port 5 extends to the outside of the lower end of the sleeve 1, so that the material absorbing port 5 of the material absorbing pipe 4 is closer to the earth and rock layer 2 to absorb more earth and rock silt on the surface of the earth and rock layer 2, the material absorbing pipe 4 can absorb the earth and rock silt on the surface of the earth and rock layer 2 before the sleeve 1, a pit is formed on the earth and rock layer 2, the sleeve 1 can rapidly break the edge of the pit, a subsided earth and rock slope is formed near the pit, the earth and rock silt forming the subsided earth and rock slope can be effectively absorbed by the material absorbing pipe 4 to be discharged, the problem that massive earth and rock blocks are difficult to be discharged by the material absorbing pipe 4 in the descending process of the sleeve 1 is avoided, the subsidence speed of the sleeve 1 is accelerated, the hole forming cost is reduced, and; in this embodiment, inhale the lower terminal surface of material pipe 4 and the lower terminal surface of sleeve pipe 1 and be dentate structure, dentate structure inhale material pipe 4 and sleeve pipe 1 can help its two broken stone layer 2 when sinking to a certain extent, improve the pore-forming efficiency of device. The driving part is a telescopic hydraulic pushing mechanism for driving the material suction pipe 4 to lift, and the position of the material suction port 5 of the material suction pipe 4 can be effectively realized through the mechanism, so that a user can adjust the depth position of the material suction port 5 according to different use conditions, and the use flexibility of the soil suction type full-casing pipe pore-forming device is improved;
the pipe extractor 6, the pipe extractor 6 with the sleeve pipe 1 links to each other for the supplementary extractor of the pile driver of beating, above-mentioned pipe extractor 6 and sleeve pipe 1 external diameter phase-match provide the helping hand for sleeve pipe 1 in the sleeve pipe 1 process of extracting, especially when sleeve pipe 1 is from static state to the rising state, because the resistance that sleeve pipe 1 received is bigger, can effectual supplementary extractor of the pile driver of beating under the cooperation of pipe extractor 6.
The use method of the soil-absorbing type full-casing pore-forming device comprises the following steps:
s1, installing the sleeve 1 on the pile driver;
s2, performing negative pressure suction on the soil and stone layer 2 in advance through the driving suction mechanism to form a pit in the soil and stone layer 2, driving the sleeve 1 to sink and enter the soil and stone layer 2 to form a containing hole 3, continuously spraying water on the surface of the sleeve 1 in the sinking process of the sleeve 1, and simultaneously discharging soil, stone and sediment in the inner cavity of the sleeve 1 through the suction mechanism;
s3, removing the suction mechanism;
s4, sinking the reinforcement cage to the bottom of the hole 3 of the accommodating hole; s5, pouring concrete into the accommodating hole 3, driving the sleeve 1 through the pipe extractor 6 to assist in pipe extraction of the pile driver, lifting the sleeve 1 to the completion of concrete pouring pile, and extracting the sleeve 1.
In step S2, the frictional resistance between the outer wall of the casing 1 and the soil layer may be reduced by water, and the liquefiable stratum around the outer side of the casing 1 may be liquefied by the high-frequency excitation of the vibration hammer, so that the frictional resistance on the outer side wall of the casing 1 may be effectively reduced by the addition of water and the liquefaction of the stratum, and the sinking speed of the casing 1 may be increased. In the step S2, because the suction mechanism can perform negative pressure suction on the earth and rock layer 2 before the sleeve 1, a pit can be formed in the earth and rock layer 2, and only the earth and rock at the edge of the pit need to be crushed in the descending process of the sleeve 1, thereby effectively reducing the descending resistance of the sleeve 1. And in addition, broken soil, stone, mud and sand can form broken small soil slopes at the edges of the inner cavity of the sleeve 1 in the descending process of the sleeve 1, and the loose small soil slopes can be sucked out of the ground by the suction mechanism quickly so that the soil, stone and sand free on the inner wall of the immersed tube are in contact with the small soil slopes. The casing 1 only has stratum friction of the outer wall of the casing 1 in the sinking process, the sinking speed of the casing 1 is accelerated, the hole forming cost is reduced, and the hole forming efficiency is improved.
Of course, the application of the present invention does not specifically limit the lubricant sprayed on the surface of the sleeve 1, and in other embodiments, a chemical lubricant such as lubricant may be sprayed on the surface of the sleeve 1.
Certainly, the arrangement position of the material suction port 5 arranged on the material suction pipe 4 is not specifically limited in the application of the invention, in other embodiments, the material suction port 5 is only located on the lower end face of the material suction pipe 4, and the material suction port 5 located on the lower end face of the material suction pipe 4 can quickly and effectively form a pit on the terra alba layer 2 before the sleeve 1, so that the resistance force on the sinking of the sleeve 1 is reduced.
Example 2
The difference between this embodiment and embodiment 1 is that, as shown in fig. 2 and fig. 3, during the hole forming process, the depth position of the suction port 5 on the suction pipe 4 is flush with the lower end surface of the casing 1, and the suction port 5 is located on the lower end surface of the suction pipe 4 and the side wall of the lower end of the suction pipe 4. The material suction pipe 4 sinks to the lower end face of the sleeve 1, so that the material suction pipe 4 can suck soil and stone silt on the surface of the soil and stone layer 2 in advance of the sleeve 1, a pit is formed in the soil and stone layer 2, the sleeve 1 shakes quickly near the pit in the descending process of the sleeve 1 to form a collapsed soil slope, the collapsed soil slope can be effectively sucked by the material suction pipe 4 to be discharged, and the problem that massive soil and stone are difficult to be discharged by the material suction pipe 4 in the descending process of the sleeve 1 is avoided.
Example 3
The difference between this embodiment and embodiment 1 is that, as shown in fig. 4, the soil-suction type full casing pore-forming device is constructed in a water area environment, and the method for using the soil-suction type full casing pore-forming device includes the following steps: s1, installing the sleeve 1 on the pile driver; s2, spraying high-pressure water towards the terra 2 by a high-pressure water gun 7, discharging soil and stone silt in the inner cavity of the sleeve 1 by the suction mechanism, and simultaneously driving the sleeve 1 to sink and enter the terra 2 to form a containing hole 3; s3, removing the suction mechanism; s4, implanting the precast pile into the accommodating hole 3; and S5, pulling out the sleeve 1 and grouting into the containing hole 3. The suction mechanism is a mud pump. The suction mechanism is a slurry pump. In the water construction environment, the slurry pump can effectively cooperate with the high-pressure water gun 7 to cut the soil layer 2 so as to form the containing hole 3 in the underwater environment.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (13)
1. A soil-suction type full-casing pore-forming device is characterized by comprising
A sleeve (1) driven to move towards the earth layer (2) to form a containing hole (3);
the suction mechanism generates negative pressure in the inner cavity of the sleeve (1) and discharges soil, stone and sediment in the sleeve (1) so as to reduce the frictional resistance of the soil, stone and sediment to the inner wall of the sleeve (1);
the sleeve driving mechanism drives the sleeve (1) to vibrate up and down towards the direction of the earth and stone layer (2) so that the sleeve (1) sinks into the earth and stone layer (2) to form a containing hole (3);
the suction mechanism comprises a suction pipe (4) extending into the inner cavity of the sleeve (1) and used for discharging soil, stone and sediment, wherein in the pore-forming process, the depth position of a suction port (5) on the suction pipe (4) is not less than that of the sleeve (1) entering the soil and stone layer (2).
2. The soil-absorbing type full casing pipe pore-forming device according to claim 1, characterized in that during pore-forming, the material-absorbing opening (5) extends out of the lower end of the casing pipe (1).
3. The soil-absorbing type full-casing pore-forming device according to claim 1 or 2, characterized in that the material-absorbing opening (5) is located on the lower end surface of the material-absorbing pipe (4), and/or the material-absorbing opening (5) is located on the side wall of the lower end of the material-absorbing pipe (4).
4. Soil-suction full-casing pore-forming device according to claim 1, characterized in that the suction mechanism comprises a driving part for driving the suction pipe (4) to ascend and descend.
5. The soil-absorbing full casing pipe pore-forming device according to claim 1, characterized in that the lower end surface of the material-absorbing pipe (4) is a tooth-shaped structure.
6. The soil-suction type full-casing hole-forming device as claimed in claim 1, wherein the casing driving mechanism comprises a vibration hammer, and the vibration hammer is a high-frequency vibration hammer.
7. The soil-absorbing type full casing hole-forming device according to claim 1, further comprising a pipe extractor (6), wherein the pipe extractor (6) is connected with the casing (1) and is used for assisting in pipe extraction of a pile driver.
8. The soil-suction type full-casing pore-forming device according to claim 1, further comprising a high-pressure water gun (7) extending into the casing (1), wherein the lower end of the high-pressure water gun (7) is located in the inner cavity of the casing (1).
9. The use method of the soil-absorbing full casing hole-forming device according to any one of claims 1-8, characterized by comprising the following steps:
s1, mounting the sleeve (1) on a pile driver;
s2, performing negative pressure suction on the soil-rock layer (2) in advance through a driving suction mechanism to form a pit in the soil-rock layer (2), driving the sleeve (1) to sink into the soil-rock layer (2) to form a containing hole (3), and discharging soil-rock sediment in the inner cavity of the sleeve (1) through the suction mechanism;
s3, removing the suction mechanism;
s4, sinking the reinforcement cage to the bottom of the accommodating hole (3);
s5, pouring concrete into the accommodating hole (3), and simultaneously lifting the sleeve (1) to the completion of the concrete pouring pile, wherein the sleeve (1) is pulled out.
10. The method for using the soil-absorbing full casing pipe hole-forming device according to claim 9, wherein the step of driving the casing pipe (1) to sink into the soil stone layer (2) to form a containing hole (3) further comprises the steps of: continuously adding lubricant to the surface of the sleeve (1) during the sinking process of the sleeve (1).
11. The method for using the soil-suction type full casing hole-forming device according to claim 9, wherein the lifting the casing (1) comprises the steps of S5: the sleeve (1) is driven by the pipe extractor (6) to assist in pipe extraction of the pile driver.
12. The use method of the soil-absorbing full-casing pore-forming device according to any one of claims 1 to 8, which is applied to a construction environment in water, and comprises the following steps:
s1, mounting the sleeve (1) on a pile driver;
s2, spraying high-pressure water towards the terra layer (2) through a high-pressure water gun (7), discharging terra silt in the inner cavity of the sleeve (1) through the suction mechanism, and simultaneously driving the sleeve (1) to sink and enter the terra layer (2) to form a containing hole (3);
s3, removing the suction mechanism;
s4, implanting the precast pile into the accommodating hole (3);
and S5, pulling out the sleeve (1) and injecting slurry into the accommodating hole (3).
13. The method of using the soil absorbing full casing pipe hole forming device as claimed in claim 11, wherein the suction mechanism is a mud pump.
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| CN201811500158X | 2018-12-10 | ||
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| US4702325A (en) * | 1984-10-04 | 1987-10-27 | James Hipp | Apparatus and method for driving casing or conductor pipe |
| CN101153489B (en) * | 2006-09-21 | 2010-06-16 | 王国奋 | Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile |
| CN102493468B (en) * | 2011-12-13 | 2014-06-11 | 中交第二公路工程局有限公司 | Design method for construction cofferdam of bridge deepwater soft soil foundation |
| CN103485355B (en) * | 2013-10-17 | 2015-04-22 | 兰州理工大学 | Frame-heat anchor pipe structure for preventing and treating cold-region slope collapse due to freeze thawing and construction method |
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