CN110747849A - Construction method and construction equipment for stirring pile with automatically controlled slurry and powder variables - Google Patents
Construction method and construction equipment for stirring pile with automatically controlled slurry and powder variables Download PDFInfo
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- CN110747849A CN110747849A CN201911076851.3A CN201911076851A CN110747849A CN 110747849 A CN110747849 A CN 110747849A CN 201911076851 A CN201911076851 A CN 201911076851A CN 110747849 A CN110747849 A CN 110747849A
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- 239000002002 slurry Substances 0.000 title claims abstract description 172
- 239000000843 powder Substances 0.000 title claims abstract description 139
- 238000010276 construction Methods 0.000 title claims abstract description 80
- 238000003756 stirring Methods 0.000 title claims abstract description 26
- 239000004568 cement Substances 0.000 claims abstract description 180
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 238000005553 drilling Methods 0.000 claims description 15
- 238000005303 weighing Methods 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 2
- 239000011440 grout Substances 0.000 claims 4
- 239000002689 soil Substances 0.000 abstract description 8
- 230000010354 integration Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The application discloses a construction method and construction equipment for a stirring pile with automatically controlled slurry and powder variables, and relates to the field of civil engineering construction. Construction equipment stores up thick liquid equipment and dry powder cement, compressed air storage facilities and links to each other, includes: the device comprises a drill rod, a cement slurry channel, a dry powder cement and compressed air channel, a slurry outlet, a dry powder cement outlet, a slurry conveying pipe, a dry powder cement and compressed air conveying pipe and a control host. Because each drill rod is provided with a cement slurry channel, a dry powder cement channel and a compressed air channel for respectively conveying wet and dry media, the dry and wet media can be switched, the multiple purposes of one machine can be realized, and the pile forming quality of the mixing pile can be improved by adopting different types of media and controlling the media consumption in different soil layers. The control host controls the flow meter and the flow control device and the barometer and the air pressure control device, so that the automatic control of the slurry and powder variables is realized, the integration of the stirring pile construction equipment, the material consumption accuracy and the operation automation are improved, and the pile forming quality is ensured.
Description
Technical Field
The application relates to a civil construction technology, in particular to a construction method and construction equipment of a mixing pile with variable automatic control of slurry and powder.
Background
The cement mixing pile is a common technology for reinforcing and enclosing a soft foundation. The existing dry method operation technology conveys compressed air and dry powder cement through a pipeline reserved in a drill rod of a pile machine, the existing wet method operation technology conveys cement paste through a pipeline reserved in the drill rod of the pile machine, and the cement paste, the dry powder cement and the dry powder cement are sprayed out through an outlet arranged at the bottom of the drill rod and then generate hydration reaction with soil and water to form a pile body due to the stirring effect of a drill rod blade.
The existing dry construction equipment can only carry out dry construction, and the existing wet construction equipment can only carry out wet construction, so that the use function of the construction equipment is limited. In addition, the existing construction equipment controls the slurry dosage and the dry powder cement dosage during construction, and mainly indirectly controls the sinking and lifting speed of a drill rod of the mixing pile machine, the rotating speed of the drill rod, the material outlet pressure and the like, so that the artificial influence factors during construction are large, the dosage of a certain reinforcing section material in an actual reinforcing range cannot be accurately determined, and the dosage of a certain reinforcing section material in the actual reinforcing range cannot be controlled in a targeted manner.
Disclosure of Invention
The present application is directed to overcoming the above problems or at least partially solving or alleviating the above problems, and to providing a construction method and construction equipment capable of improving the integration of mixing pile construction equipment, the accuracy of material usage, and the automation of operation.
According to an aspect of the present application, there is provided a mixing pile construction equipment with automatic control of slurry and powder variables, for connecting with a slurry storage equipment and a dry powder cement and compressed air storage equipment, comprising:
the drilling rods are provided with stirring blades, and the interiors of the drilling rods are hollow;
the cement slurry channel and the dry powder cement and compressed air channel are arranged inside each drill rod, the cement slurry channel is used for conveying cement slurry, and the dry powder cement and compressed air channel is used for conveying compressed air and dry powder cement; and
the slurry outlet and the dry powder cement outlet are arranged at the bottom of the corresponding drill rod and correspond to the cement slurry channel and the dry powder cement and compressed air channel, the slurry outlet is communicated with the cement slurry channel, and the dry powder cement outlet is communicated with the dry powder cement and compressed air channel;
the slurry conveying pipe is connected with the cement slurry channel and the slurry storage device respectively so as to convey cement slurry in the slurry storage device to the cement slurry channel, and the dry powder cement and compressed air conveying pipes are connected with the dry powder cement and compressed air channel and the dry powder cement and compressed air storage device respectively so as to convey dry powder cement and compressed air of the dry powder cement and compressed air storage device to the dry powder cement and compressed air channel; and
the control host is connected with the slurry conveying pipe and the dry powder cement and compressed air conveying pipe, a flow meter and a flow control device are arranged in the slurry conveying pipe between the control host and the slurry storage device and are configured to measure the slurry flow and feed back slurry flow data to the control host, a barometer and an air pressure control device are arranged in the dry powder cement and compressed air conveying pipe between the control host and the dry powder cement and compressed air storage device and are configured to measure air pressure and feed back air pressure data to the control host, and the control host is configured to adjust the slurry flow and the air pressure according to the fed-back slurry flow data and air pressure data, so that the flow meter and the flow control device and the barometer and the air pressure control device are controlled, and automatic control of slurry and powder variables is realized.
Optionally, the construction equipment further includes a variable-frequency driving device for controlling the rotation speed of the drill rod, the driving device is provided with a driving resistance measuring device for measuring driving resistance and uploading driving resistance data to the control host, and the control host is further configured to control the driving device.
Optionally, the construction equipment further comprises a measuring device attached to the outside of the drill rod, and configured to measure the depth of penetration, the rotational speed of the drill rod, the sinking and lifting speed data of the drill rod, and feed back the data to the control host.
Optionally, a slurry liquid level meter is arranged in the slurry storage device and used for measuring the slurry liquid level in the slurry storage device and feeding back the liquid level data to the control host.
Optionally, an automatic weighing platform is arranged in the dry powder cement and compressed air storage device, and is used for weighing the weight of the dry powder cement and feeding back the weight data of the dry powder cement to the control host.
Optionally, a slurry liquid level meter is arranged in the slurry storage device and used for measuring the slurry liquid level in the slurry storage device and feeding back liquid level data to the control host;
an automatic weighing platform is arranged in the dry powder cement and compressed air storage equipment and is used for weighing the weight of the dry powder cement and feeding back the weight data of the dry powder cement to the control host;
the construction equipment further includes:
the variable-frequency driving device is used for controlling the rotating speed of the drill rod and is provided with a driving resistance measuring device which is used for measuring driving resistance and uploading driving resistance data to the control host;
the measuring device is attached to the outside of the drill rod and used for measuring the depth of the drill rod, the rotating speed of the drill rod, the sinking speed and the lifting speed of the drill rod and feeding back the data to the control host;
the control host machine obtains the material consumption of a certain reinforcing section in the actual reinforcing range by analyzing the driving resistance data of the driving device, measuring the drilling rod depth, the drilling rod rotating speed, the drilling rod sinking and lifting speed data of the measuring device, the slurry flow data of the flow meter and the flow control device, the gas pressure data of the barometer and the gas pressure control device, the slurry liquid level data of the slurry liquid level meter and the dry powder cement weight data of the automatic weighing platform, and feeds back and controls the driving device, the barometer and the gas pressure control device as well as the barometer and the gas pressure control device according to a preset calculation method in the control host machine, thereby pertinently controlling the material consumption of the certain reinforcing section in the actual reinforcing range.
According to another aspect of the present application, there is provided a mixing pile construction method using the construction equipment for automatically controlling slurry and powder variables, comprising the steps of:
when only dry operation is carried out, only compressed air and dry powder cement are sprayed in the range of dry construction, and a cement slurry channel is closed;
when only wet operation is carried out, only cement paste is sprayed in the range needing wet construction, and dry powder cement and compressed air channels are closed;
when only dry construction operation or only wet construction operation is carried out, only one medium is sprayed in a cement slurry channel and a dry powder cement and compressed air channel; wherein the content of the first and second substances,
during pile foundation operation, slurry in the slurry storage equipment is automatically conveyed to the slurry conveying pipe, the flow of the slurry is measured by the flow meter and the flow control device, the slurry flow data is fed back to the control host, and the slurry is conveyed to a cement slurry channel in the drill rod through the slurry conveying pipe after the flow is regulated by the control host according to relevant feedback information;
during pile foundation operation, dry powder cement and compressed air in the dry powder cement and compressed air storage equipment are conveyed from a conveying pipe, air pressure is measured by an air pressure gauge and an air pressure control device, air pressure data are fed back to the control host, and the air pressure is regulated by the control host according to relevant feedback information and then conveyed to a dry powder cement and compressed air channel in the drill rod through the conveying pipe;
and similar steps are carried out until the pile forming is finished, and the next pile body construction is carried out by shifting.
According to the construction method and the construction equipment for the mixing pile with the variable automatic control of the slurry and powder, the cement slurry channel, the dry powder cement channel and the compressed air channel are arranged in each drill rod and are used for respectively conveying the cement slurry, the compressed air and the dry powder cement, so that the dry and wet medium switching can be realized, the multiple purposes of one machine can be realized, different types of media are adopted through different soil layers, the using amount of the media is controlled, and the pile forming quality of the mixing pile is further improved. The control host controls the flow meter and the flow control device and the barometer and the air pressure control device, so that the automatic control of the slurry and powder variables is realized, the integration of the stirring pile construction equipment, the material consumption accuracy and the operation automation are improved, and the pile forming quality is ensured.
The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of a mixing pile construction apparatus having automatic control of slurry and powder variables according to an embodiment of the present application;
FIG. 2 is a schematic block diagram of the drill pipe section shown in FIG. 1;
fig. 3 is a schematic configuration view of a blade reserve medium outlet at the end of the stirring blade in fig. 2.
The symbols in the drawings represent the following meanings:
100 of the construction equipment, and a construction method,
1. a drill stem;
2. a stirring blade;
3. a slurry outlet;
4. a dry powder cement outlet;
5. a measuring device;
6. a drive device;
7. a control host;
8. a slurry storage device;
9. dry powder cement and compressed air storage equipment;
10. a valve;
21 a first blade reserved medium outlet, 22 a second blade reserved medium outlet, 23 a third blade reserved medium outlet,
31. a cement slurry channel; 32. a pulp conveying pipe; 33. a flow meter and a flow control device;
41. dry powder cement and compressed air channels; 42. dry powder cement and compressed air conveying pipes; 43. a barometer and a pressure control device;
81. a slurry level meter;
91. an automatic weighing platform.
Detailed Description
Fig. 1 is a schematic structural view of a mixing pile construction apparatus having automatic control of slurry and powder variables according to an embodiment of the present application. In the embodiment, a mixing pile construction equipment 100 with automatic control of slurry and powder variables is provided, which is used for connecting with a slurry storage equipment 8 and a dry powder cement and compressed air storage equipment 9, and generally comprises: the drilling rod 1, a cement slurry channel 31, a dry powder cement and compressed air channel 41, a slurry outlet 3, a dry powder cement outlet, a slurry conveying pipe 32, a dry powder cement and compressed air conveying pipe 42 and a control host 7. Each drill rod 1 has a stirring blade 2, and each drill rod 1 is hollow inside. A cement slurry channel 31 and a dry powder cement, compressed air channel 41 are provided inside each drill pipe 1, the cement slurry channel 31 is used for conveying cement slurry, and the dry powder cement, compressed air channel 41 is used for conveying compressed air and dry powder cement. The slurry outlet 3 and the dry powder cement outlet 4 are arranged at the bottom of the corresponding drill rod 1, correspond to the cement slurry channel 31 and the dry powder cement and compressed air channel 41, the slurry outlet 3 is communicated with the cement slurry channel 31, and the dry powder cement outlet 4 is communicated with the dry powder cement and compressed air channel 41. The slurry delivery pipe 32 is respectively connected with the cement slurry channel 31 and the slurry storage device 8 so as to deliver the cement slurry in the slurry storage device 8 to the cement slurry channel 31. The dry powder cement and compressed air delivery pipe 42 is respectively connected with the dry powder cement and compressed air channel 41 and the dry powder cement and compressed air storage device 9, so as to deliver the dry powder cement and the compressed air of the dry powder cement and compressed air storage device 9 to the dry powder cement and compressed air channel 41. The control main machine 7 is connected with the slurry conveying pipe 32 and the dry powder cement and compressed air conveying pipe 42. A flow meter and a flow control device 33 are arranged in the slurry pipe 32 between the control host 7 and the slurry storage facility 8, and are configured to measure the slurry flow and feed back the slurry flow data to the control host 7. An air pressure gauge and an air pressure control device 43 are arranged in the dry powder cement and compressed air delivery pipe 42 between the control host 7 and the dry powder cement and compressed air storage device 9, and are configured to measure air pressure and feed back air pressure data to the control host 7. The control host 7 is configured to adjust the slurry flow and the air pressure according to the fed back slurry flow data and air pressure data, thereby controlling the flow meter and flow control device 33 and the air pressure meter and air pressure control device 43 to realize the automatic control of the slurry and powder variables.
In particular, the flow meter and flow control device 33 may comprise a flow meter, a flow transmitter, a flow control valve. The barometer and the air pressure control means 43 may comprise a barometer, an air pressure transducer, an air pressure control valve. The control host 7 may be a control chip, and may also be controlled by a circuit.
As shown in fig. 2, the stirring drill rod 1 sinks with stirring, and during the sinking period of the dry operation, compressed air and dry cement are conveyed through the dry powder cement in the drill rod 1 and the compressed air channel 41, and the medium is ejected through the dry powder cement outlet 4 at the bottom of the drill rod 1. Alternatively, during wet sinking operation, cement slurry is delivered through the cement slurry channel 31 in the drill pipe 1 and the medium is ejected through the slurry outlet 3. The sprayed medium is stirred by the stirring blades 2, and the cement, the soil and the water are subjected to hydration reaction to form a pile body. The drill rod 1 is stirred and ascended after sinking to the designed elevation, and the dry powder cement, the compressed air channel 41 and the cement slurry channel 31 can be continuously sprayed with the original medium or only stirred uniformly during the ascending.
During pile foundation operation, the slurry in the slurry storage device 8 is measured by the slurry pipe 32 through the flow meter and the flow control device 33, the slurry flow data is fed back to the control host 7, and the slurry is regulated by the control host 7 according to relevant feedback information and then is conveyed to the cement slurry channel 31 in the drill rod 1 through the slurry pipe 32.
During the operation of the pile foundation, the dry powder cement and the compressed air in the dry powder cement and compressed air storage device 9 are metered by the air pressure meter and the air pressure control device 43 from the conveying pipe 42, the air pressure data is fed back to the control host 7, and the air pressure is regulated by the control host 7 according to the relevant feedback information and then conveyed to the dry powder cement and compressed air channel 41 in the drill rod 1 through the conveying pipe 42.
And similar steps are carried out until the pile forming is finished, and the next pile body construction is carried out by shifting.
The construction equipment 100 for the construction of the mixing pile for switching the dry and wet media has the advantages that the dry powder cement, the compressed air channel 41 and the cement slurry channel 31 are arranged in each drill rod 1 and can be mutually communicated and mutually independent, so that the dry and wet media can be freely switched, and one machine with multiple purposes can be realized. For soil layers with different depths, only compressed air and cement can be sprayed in a range needing dry construction, and the cement slurry channel 31 is closed. And aiming at soil layers with different depths, only cement paste can be sprayed in the range needing wet construction, and the dry powder cement and compressed air channel 41 is closed. Different types of media are adopted in different soil layers and the dosage of the media is controlled, so that the pile forming quality of the mixing pile is improved. The control host 7 controls the flow meter and the flow control device 33 and the air pressure meter and the air pressure control device 43, so that the automatic control of the slurry and powder variables is realized, the integration, the material consumption accuracy and the operation automation of the stirring pile construction equipment 100 are improved, the intelligent degree of the construction equipment 100 is high, the uneven pile forming quality caused by manual operation equipment is reduced, and the pile forming quality is ensured.
Further, in the present embodiment, as shown in fig. 2, the dry powder cement, compressed air passage 41 and cement slurry passage 31 are communicated only at the top position, and the other portions of the dry powder cement, compressed air passage 41 and cement slurry passage 31 are not communicated. The construction equipment 100 further includes a valve 10, and the valve 10 is disposed at a communication position configured to communicate or cut off communication of the dry powder cement, the compressed air passage 41, and the cement slurry passage 31 with each other. The two medium channels of the dry powder cement channel, the compressed air channel 41 and the cement slurry channel 31 can be communicated with each other, and the construction operation efficiency is not lower than the single dry construction efficiency or the single wet construction efficiency.
Fig. 3 is a schematic structural view of a vane reserve media outlet at the end of the vane shown in fig. 2. In this embodiment, each of the stirring blades 2 corresponding to a position close to each of the channels in the stirring blades 2 has a blade reserved medium outlet corresponding to the channel, the blade reserved medium outlet is communicated with the corresponding channel, and the blade reserved medium outlet is used for ejecting a corresponding medium. In this embodiment, the left stirring vane 2 has a vane reserve medium outlet communicating with the cement slurry passage 31. The right stirring blade 2 is provided with a blade reserved medium outlet communicated with a dry powder cement and compressed air channel 41.
More specifically, as shown in fig. 3, the blade reserve medium outlets at each of the agitating blades 2 include three, which are a first blade reserve medium outlet 21, a second blade reserve medium outlet 22, and a third blade reserve medium outlet 23, respectively. Further, the first blade reserved medium outlet 21 and the second blade reserved medium outlet 22 are located at both sides of the corresponding stirring blade 2, and the third blade reserved medium outlet 23 is located at the end of the corresponding stirring blade 2. Further, the aperture of the first blade reserve medium outlet 21 is larger than the aperture of the second blade reserve medium outlet 22, and the distance between the center point of the first blade reserve medium outlet 21 and the axis of the drill rod 1 is smaller than the distance between the center point of the second blade reserve medium outlet 22 and the axis of the drill rod 1. Further, the distances of the first blade reserve medium outlet 21 and the second blade reserve medium outlet 22 of the adjacent stirring blades 2 from the axis of the drill rod 1 in the vertical direction and the horizontal direction are different.
In this embodiment, as shown in fig. 3, a first blade reserved medium outlet 21, a second blade reserved medium outlet 22 and a third blade reserved medium outlet 23 at the end part on both sides are newly arranged on the stirring blade 2; the opening apertures of the first blade reserved medium outlet 21 and the second blade reserved medium outlet 22 are different; the distances between the reserved medium outlets of the blades of the adjacent stirring blades 2 and the axis of the drill rod 1 in the horizontal direction and the vertical direction are different, so that the pile forming quality is more uniform.
In this embodiment, as shown in fig. 1, the construction equipment 100 further includes a variable frequency driving device 6 for controlling the rotation speed of the drill rod, the driving device 6 is provided with a driving resistance measuring device for measuring driving resistance and uploading driving resistance data to the control host 7, and the control host 7 is further configured to control the driving device 6. In particular, the variable frequency drive 6 may be a variable frequency pump. The driving resistance measuring means may be a resistance sensor.
In this embodiment, as shown in fig. 1, the construction equipment 100 further includes a measuring device 5 attached to the outside of the drill rod 1, and configured to measure the depth of the drill rod, the rotational speed of the drill rod, the sinking speed and the lifting speed of the drill rod, and feed back the measured data to the control host 7. In particular, the measuring device 5 may comprise a distance sensor, a rotational speed sensor and a speed sensor.
In this embodiment, as shown in fig. 1, a slurry level meter 81 is disposed in the slurry storage device 8, and is configured to measure a slurry level in the slurry storage device 8 and feed back the level data to the control host 7.
In this embodiment, as shown in fig. 1, an automatic weighing platform 91 is disposed in the dry powder cement and compressed air storage device 9, and is configured to weigh the dry powder cement and feed back the dry powder cement weight data to the control host 7.
In this embodiment, as shown in fig. 1, the control host 7 analyzes the driving resistance data of the driving device 6, the drilling rod depth, the drilling rod rotation speed, the drilling rod sinking and lifting speed data of the measuring device 5, the slurry flow data of the flow meter and the flow control device, the gas pressure data of the barometer and the gas pressure control device, the slurry level data of the slurry level meter 81, and the dry powder cement weight data of the automatic weighing platform 91 to calculate the material usage amount of a certain reinforcing section in the actual reinforcing range, and controls the driving device 6, the barometer, the gas pressure control device, the barometer and the gas pressure control device 43 in a feedback manner according to a calculation method preset in the control host 7, thereby controlling the material usage amount of a certain reinforcing section in the actual reinforcing range in a targeted manner.
The embodiment also provides a method for constructing a mixing pile by using the construction equipment 100 and automatically controlling the slurry and powder variables, which comprises the following steps:
when only dry operation is carried out, only compressed air and dry powder cement are sprayed in the range of dry construction, and the cement slurry channel 31 is closed;
when only wet operation is carried out, only cement slurry is sprayed in the range needing wet construction, and the dry powder cement and compressed air channel 41 is closed;
when only dry construction operation or only wet construction operation is carried out, only one medium is sprayed in the cement slurry channel 31 and the dry powder cement and compressed air channel 41; wherein the content of the first and second substances,
during pile foundation operation, the slurry in the slurry storage device 8 is measured by the slurry pipe 32 through the flow meter and the flow control device 33, the slurry flow data is fed back to the control host 7, and the slurry is regulated by the control host 7 according to relevant feedback information and then is conveyed to the cement slurry channel 31 in the drill rod 1 through the slurry pipe 32;
during pile foundation operation, dry powder cement and compressed air in the compressed air storage device 9 are conveyed from the conveying pipe, air pressure is measured by the air pressure gauge and the air pressure control device 43, air pressure data are fed back to the control host 7, and the air pressure is regulated by the control host 7 according to relevant feedback information and then conveyed to the dry powder cement and compressed air channel 41 in the drill rod 1 through the conveying pipe;
and similar steps are carried out until the pile forming is finished, and the next pile body construction is carried out by shifting.
According to the construction method of the mixing pile with the variable automatic control of the slurry and powder, the construction equipment 100 is used, and the cement slurry channel 31, the dry powder cement channel 41 and the compressed air channel 41 are arranged in each drill rod 1 of the construction equipment 100 and respectively convey cement slurry, compressed air and dry powder cement, so that dry and wet medium switching can be realized, multiple purposes can be realized, different types of media are adopted in different soil layers, the media consumption is controlled, and the pile forming quality of the mixing pile is improved. The control host 7 controls the flow meter and the flow control device 33 and the air pressure meter and the air pressure control device 43, so that the automatic control of the slurry and powder variables is realized, the integration of the stirring pile construction equipment 100, the material consumption accuracy and the operation automation are improved, and the pile forming quality is ensured.
The single pile aperture of stirring stake in this application can be 700 mm. Of course, in other embodiments, the aperture of the single pile of the mixing pile may also be 400mm, 450mm, 500mm, 550mm, 600mm, 650mm, 700mm, 750mm, 800mm, 850mm, 900mm, 950mm, 1000mm or 1050mm, and other apertures, according to the construction requirement.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A mixing pile construction equipment (100) with automatic control of slurry and powder variables, for connecting with slurry storage equipment (8) and dry powder cement and compressed air storage equipment (9), characterized by comprising:
the drilling rod (1), each drilling rod (1) has stirring blades (2), and each drilling rod (1) is hollow;
the cement slurry channel (31) and the dry powder cement and compressed air channel (41) are arranged inside each drill rod (1), the cement slurry channel (31) is used for conveying cement slurry, and the dry powder cement and compressed air channel (41) is used for conveying compressed air and dry powder cement; and
the slurry outlet (3) and the dry powder cement outlet (4) are arranged at the bottom of the corresponding drill rod (1) and correspond to the cement slurry channel (31) and the dry powder cement and compressed air channel (41), the slurry outlet (3) is communicated with the cement slurry channel (31), and the dry powder cement outlet (4) is communicated with the dry powder cement and compressed air channel (41);
the slurry conveying pipe (32) is connected with the cement slurry channel (31) and the slurry storage device (8) respectively so as to convey the cement slurry in the slurry storage device (8) to the cement slurry channel (31), and the dry powder cement and compressed air conveying pipe (42) is connected with the dry powder cement and compressed air channel (41) and the dry powder cement and compressed air storage device (9) respectively so as to convey the dry powder cement and compressed air of the dry powder cement and compressed air storage device (9) to the dry powder cement and compressed air channel (41); and
a control host (7) connected with the slurry conveying pipe (32) and the dry powder cement and compressed air conveying pipe (42), wherein a flow meter and a flow control device (33) are arranged in the slurry conveying pipe (32) between the control host (7) and the slurry storage device (8) and are configured to measure the slurry flow and feed back the slurry flow data to the control host (7), a barometer and an air pressure control device (43) are arranged in the dry powder cement and compressed air conveying pipe (42) between the control host (7) and the dry powder cement and compressed air storage device (9) and are configured to measure the air pressure and feed back the air pressure data to the control host (7), and the control host (7) is configured to adjust the slurry flow and the air pressure according to the fed back slurry flow data and air pressure data so as to control the flow meter and the barometer and the air pressure control device (33) and the barometer and the air pressure control device (43), so as to realize the automatic control of the variable of the pulp and the powder.
2. The construction equipment (100) according to claim 1, further comprising a variable frequency drive device (6) for controlling the rotation speed of the drill rod (1), the drive device (6) being provided with a drive resistance measuring device for measuring the drive resistance and uploading drive resistance data to the control host (7), the control host (7) being further configured to control the drive device (6).
3. The construction equipment (100) according to claim 1, further comprising a measuring device (5) attached to the outside of the drill rod (1) for measuring the depth of penetration of the drill rod, the rotation speed of the drill rod, the sinking and lifting speed data of the drill rod and feeding back to the control mainframe (7).
4. The construction equipment (100) according to claim 1, wherein a grout level meter (81) is arranged in the grout storage equipment (8) and is used for measuring the grout level in the grout storage equipment (8) and feeding back the level data to the control host (7).
5. The construction equipment (100) according to claim 1, wherein an automatic weighing station (91) is arranged in the dry powder cement, compressed air storage equipment (9) for weighing the dry powder cement and feeding back the dry powder cement weight data to the control host (7).
6. The construction equipment (100) according to claim 1, wherein a slurry level meter (81) is arranged in the slurry storage equipment (8) and is used for measuring the slurry level in the slurry storage equipment (8) and feeding back the liquid level data to the control host (7);
an automatic weighing platform (91) is arranged in the dry powder cement and compressed air storage equipment (9) and is used for weighing the weight of the dry powder cement and feeding back the weight data of the dry powder cement to the control host (7);
the construction equipment (100) further includes:
the variable-frequency driving device (6) is used for controlling the rotating speed of the drill rod, and the driving device (6) is provided with a driving resistance measuring device which is used for measuring driving resistance and uploading driving resistance data to the control host (7);
the measuring device (5) is attached to the outside of the drill rod (1) and used for measuring the depth of the drill rod, the rotating speed of the drill rod, the sinking speed and the lifting speed of the drill rod and feeding back the data to the control host (7);
the control host (7) analyzes the driving resistance data of the driving device (6), measures the drilling rod depth, the drilling rod rotating speed, the drilling rod sinking and lifting speed data of the device (5), the slurry flow data of the flow meter and the flow control device, the gas pressure data of the barometer and the gas pressure control device, the slurry liquid level data of the slurry liquid level meter (81), and the dry powder cement weight data of the automatic weighing platform (91), calculates the material usage of a certain reinforcing section in the actual reinforcing range, and feeds back the driving device (6), the barometer and the gas pressure control device and the barometer and the gas pressure control device (43) according to a preset calculation method in the control host (7), thereby pertinently controlling the material usage of the certain reinforcing section in the actual reinforcing range.
7. A mixing pile construction method using the construction equipment (100) of any one of claims 1 to 6 for automatic control of slurry and powder variables, comprising the steps of:
when only dry operation is carried out, only compressed air and dry powder cement are sprayed in the range of dry construction, and a cement slurry channel (31) is closed;
when only wet operation is carried out, only cement slurry is sprayed in the range needing wet construction, and a dry powder cement and compressed air channel (41) is closed;
when only dry construction operation or only wet construction operation is carried out, only one medium is sprayed to the cement slurry channel (31) and the dry powder cement and compressed air channel (41); wherein the content of the first and second substances,
during pile foundation operation, slurry in the slurry storage equipment (8) is metered from the slurry conveying pipe (32) through the flow meter and the flow control device (33), slurry flow data are fed back to the control host (7), and the slurry is conveyed to the cement slurry channel (31) in the drill rod (1) through the slurry conveying pipe (32) after the flow is adjusted by the control host (7) according to relevant feedback information;
during pile foundation operation, dry powder cement and compressed air in the compressed air storage equipment (9) are conveyed from a conveying pipe, air pressure is measured by an air pressure gauge and an air pressure control device (43), air pressure data are fed back to the control host (7), and the air pressure is regulated by the control host (7) according to relevant feedback information and then conveyed to a dry powder cement and compressed air channel (41) in the drill rod (1) through the conveying pipe;
and similar steps are carried out until the pile forming is finished, and the next pile body construction is carried out by shifting.
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| CN201911076851.3A CN110747849A (en) | 2019-11-06 | 2019-11-06 | Construction method and construction equipment for stirring pile with automatically controlled slurry and powder variables |
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| CN201911076851.3A CN110747849A (en) | 2019-11-06 | 2019-11-06 | Construction method and construction equipment for stirring pile with automatically controlled slurry and powder variables |
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| CN113186908A (en) * | 2021-03-30 | 2021-07-30 | 深圳金信城市建设有限公司 | Concrete mixing pile structure based on digital monitoring and construction method |
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