CN108277830B - Method for determining bearing layer of cast-in-place pile through high-pressure water-spraying camera shooting - Google Patents
Method for determining bearing layer of cast-in-place pile through high-pressure water-spraying camera shooting Download PDFInfo
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- CN108277830B CN108277830B CN201711353299.9A CN201711353299A CN108277830B CN 108277830 B CN108277830 B CN 108277830B CN 201711353299 A CN201711353299 A CN 201711353299A CN 108277830 B CN108277830 B CN 108277830B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005507 spraying Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000011435 rock Substances 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000001795 light effect Effects 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract 1
- 238000003384 imaging method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000003466 welding 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
- E02D33/00—Testing foundations or foundation structures
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/002—Survey of boreholes or wells by visual inspection
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Paleontology (AREA)
- Geochemistry & Mineralogy (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to the technical field of rock stratum detection, and discloses a method for determining a bored concrete pile bearing stratum by high-pressure water-jet camera shooting, which comprises the following steps: (1) erecting a winch right above the pile hole, and hanging the camera group on the winch through a steel wire rope; (2) extending and fixing the high-pressure water pipe on the camera group; (3) slowly placing the camera group at the bottom of the pile hole through a winch, spraying high-pressure water into the bottom of the pile hole through a high-pressure water pipe to form a clear water section at the bottom of the pile hole, observing the rock stratum condition at the bottom of the pile hole through the camera group, and recording the condition of the hole wall; (4) and taking out the camera group through a winch. Therefore, rock strata at the bottom of the pile hole observed and recorded by the camera group is more visual, and whether the full section of the cast-in-place pile enters the bearing stratum can be clearly judged. The method for determining the bearing layer of the cast-in-place pile by high-pressure water spray shooting is used for detecting whether the full section of the bottom of the pile hole of the cast-in-place pile reaches the bearing layer or not, and is simple in structure and more intuitive in judgment.
Description
Technical Field
The invention relates to the technical field of rock stratum detection, in particular to a method for determining a bored concrete pile bearing stratum by high-pressure water-jet camera shooting.
Background
In the engineering construction process, the bored concrete pile plays an important role in important buildings such as industrial and civil buildings, railways, bridges and the like as a deep foundation main pile foundation, the common hole forming mode of the bored concrete pile mainly comprises hole forming by impact and hole forming by rotary digging, and the mud retaining wall is often needed in the hole forming by impact and hole forming by rotary digging construction processes to maintain the stability of a hole wall.
At present, in actual construction engineering, in order to enable a cast-in-place pile to stably support a building with a large load, most of medium and slightly weathered rock formations are selected as a cast-in-place pile bearing layer, and a percussion drilling machine and a rotary drilling machine need to drill to a target bearing layer according to design requirements.
In the prior art, the core samples taken out by the punching pile and the rotary digging pile are original core samples with a small amount of sediment, the rock stratum condition at the pile end cannot be accurately judged, usually, a surveying technician judges whether the cast-in-place pile enters a target bearing stratum or not by impacting, rotary excavating and advancing speed, combining a geological survey report and a fragmental rock mass discharged along with mud, perhaps the method is a feasible method, but the specification and design require that the full section of the pile enters a certain depth of a medium and slightly weathered rock stratum, and the method is difficult to make accurate judgment, since the bedrock is not horizontal during formation or due to weathering in most cases, it is likely to be in a sloped state, and the resulting hole may only be drilled to the upper side of the sloped bearing layer, and the lower side may not enter the target bearing layer, in which case the poured concrete will easily make the pile end bearing layer less than the design requirements.
Disclosure of Invention
The invention provides a method for determining a bearing layer of a cast-in-place pile by high-pressure water-spraying camera shooting, and aims to solve the problems that the bearing layer of the cast-in-place pile in the prior art is inaccurate in judgment and too troublesome.
The invention is realized in this way, the method for determining the bearing layer of the cast-in-place pile by high-pressure water-spraying camera shooting comprises the following steps:
(1) erecting a winch right above the pile hole, and hanging the camera group on the winch through a steel wire rope;
(2) extending and fixing the high-pressure water pipe on the camera group;
(3) slowly placing the camera group into the bottom of the pile hole through the winch, spraying high-pressure water into the bottom of the pile hole through the high-pressure water pipe, forming a clear water section at the bottom of the pile hole, observing the rock stratum condition at the bottom of the pile hole through the camera group, and recording the condition of the hole wall;
(4) and taking out the camera group through the winch.
Furthermore, the camera group comprises a camera block and a plurality of cameras, the cameras surround the camera block, and the shooting range formed by the cameras covers 360 degrees around.
Further, a plurality of the cameras have a lighting effect.
Further, in the step (2), one end of a waterproof wire is connected to the camera group, and the other end of the waterproof wire is connected to the display screen.
Further, in the step (2), the waterproof electric wire is fixed on the high-pressure water pipe.
Furthermore, the winch is fixed to the top of the triangular support, and the triangular support is erected at a pile opening of the pile hole.
Furthermore, one of the triangular supports is provided with a hanging ring, and the high-pressure water pipe penetrates through the hanging ring and is fixed on the camera group.
Further, the hanging ring is positioned at the upper part of the bracket.
Furthermore, the camera shooting block is provided with a through hole in the vertical direction, and the high-pressure water pipe passes through the through hole to reach the bottom position of the pile hole.
Further, the high-pressure water pipe and the waterproof electric wire are lifted out of the pile hole while the camera group is lifted out.
Compared with the prior art, the method for determining the bearing layer of the cast-in-place pile through high-pressure water spraying and shooting provided by the invention has the advantages that the camera group is placed at the bottom of the pile hole, high-pressure water is discharged from the bottom of the pile hole through the high-pressure water pipe, the high-pressure water extrudes mud to the upper part, a clear water section is formed at the bottom of the pile hole, the image at the bottom of the pile hole is observed and recorded through the camera group, the rock stratum at the bottom of the pile hole is judged visually, the required equipment is simple, whether the full section of the cast-in-place pile reaches the bearing layer or not can be judged quickly, the cast-in-place pile is more stable, and. The problem of among the prior art bored concrete pile's holding power layer judge inaccurate and too troublesome is solved.
Drawings
Fig. 1 is a schematic plan structure diagram of a product of a method for determining a bearing layer of a cast-in-place pile by high-pressure water jet photography according to an embodiment of the present invention;
fig. 2 is a schematic plan view of a triangular frame and a winch of a product of the method for determining a bearing layer of a cast-in-place pile by high-pressure water jet photography according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1 and 2, a preferred embodiment of the present invention is provided.
The method for determining the bearing layer of the cast-in-place pile by high-pressure water-spraying camera shooting is used for detecting whether the bottom of the pile hole 11 of the cast-in-place pile reaches the bearing layer or not and is more visual.
The method for determining the bearing layer of the cast-in-place pile by high-pressure water-jet image pickup provided by the embodiment comprises the following steps:
(1) firstly, erecting a winch 13 right above a bored concrete pile hole 11 which is formed by impact or rotary excavation, and winding a steel wire rope 131 on the winch 13, wherein one end of the steel wire rope 131 is hung with a camera group 12;
(2) in addition, a high-pressure water pipe 15 extends to the camera group 12 and is fixed on the camera group 12, and the other end of the high-pressure water pipe 15 is connected with a high-pressure water pump;
(3) then the winch 13 is rotated, the camera group 12 is slowly placed at the bottom of the pile hole 11, meanwhile, the high-pressure water pipe 15 and the waterproof wire 161 also move downwards along with the camera group 12, after the camera group 12 reaches the bottom of the pile hole 11, the high-pressure water pump is started, the high-pressure water pump discharges high-pressure water into the bottom of the pile hole 11 through the high-pressure water pipe 15, at the moment, the high-pressure water squeezes the mud 111 at the bottom of the pile hole 11 to the upper side, the mud 111 upwelles, a clear water section is formed at the bottom of the pile hole 11, the camera group 12 at the bottom can clearly shoot the scene at the bottom of the pile hole 11, and whether the cast-in-place pile reaches a target bearing stratum or not is judged by observing and recording the hole wall condition at the bottom of the pile hole 11;
therefore, the image of the bottom of the pile hole 11 is visually shot and recorded through the camera group 12, whether the cast-in-place pile reaches the target bearing layer or not can be accurately judged, the operation is simple and visual, and complicated calculation is not needed any more, so that the formed cast-in-place pile is more stable, and the building borne by the cast-in-place pile is more stable.
(4) After observing and recording the bottom of the pile hole 11, the hoist 13 takes out the imaging group 12 and continues to detect the other pile holes 11.
The method for detecting whether the cast-in-place pile reaches the target bearing layer is more intuitive in result, simple to operate and simple in structure to be built, and can quickly judge the stability of the cast-in-place pile bearing layer.
In addition, the above-mentioned camera group 12 includes a camera block 121 and a plurality of cameras 122, the plurality of cameras 122 surround the periphery of the camera block 121, and the shooting range formed by the plurality of cameras 122 covers a 360 ° viewing angle, so that the hole walls of the surrounding pile hole 11 can be observed in all viewing angles, a judgment error due to the inclination of the bearing stratum is avoided, and when a rock stratum which is not the bearing stratum appears in any viewing angle, it can be judged that the cast-in-place pile does not reach the position of the bearing stratum, and downward impact or rotary drilling can be continued until the target bearing stratum is reached.
In this embodiment, the number of the cameras 122 is 3, the imaging blocks 121 are disc-shaped, and the 3 cameras 122 are arranged around the imaging blocks 121 at regular intervals by the center of the imaging blocks 121, so that the viewing angle detected by each camera 122 is 120 °, that is, a 360 ° viewing angle can be covered, and the observation range is free of dead angle and gap; of course, more cameras 122 may be provided, and in this case, the requirement for the viewing angle of a single camera 122 may be slightly reduced as long as the 360 ° viewing angle can be covered.
In other embodiments, the camera 122 rotates around the camera block 121, so as to realize the observation of the omnibearing visual angle of the hole wall of the pile hole 11.
Before the image group 12 is put into the pile hole, the camera 122 is in an open state, so that the wall of the pile hole 11 is directly recorded while the image group is put into the pile hole.
Moreover, the plurality of cameras 122 have a lighting effect, an environment with almost no light is formed at the bottom of the pile hole 11, the environment where the camera 122 is placed in the water is darker after the high-pressure water is injected, and the front end of the camera 122 has a light to illuminate the environment where the camera 122 is placed in order to keep the camera 122 shooting clear pictures at any time.
In order to make the pictures shot by the cameras 122 visible, the waterproof wires 161 are connected with the cameras 122, the other ends of the waterproof wires 161 are connected to the display screen 16, and the pictures at the bottom of the pile hole 11 are observed through the display screen 16.
In this embodiment, the other end of the waterproof wire 161 is first connected to a video capture card capable of receiving three paths, and the image is transmitted to the display screen 16 through the video capture card, so that the hole walls of the pile holes 11 at three positions are detected by operating the display screen 16, and thus, whether the pile hole is a bearing layer or not is determined, and the image in the three cameras 122 can be recorded.
In addition, since the waterproof wire 161 is thin, in the process of putting the waterproof wire 161 into the pile hole 11 or taking the waterproof wire 161 out of the pile hole 11 along with the camera group 12, in order to prevent the waterproof wire 161 from being broken, the waterproof wire 161 is fixed on the high-pressure water pipe 15, so that the waterproof wire 161 is prevented from being broken on one hand, and meanwhile, the waterproof wire 161 is not complicated to wind.
In order to arrange the winch 13 right above the pile hole 11, the triangular support 14 is arranged at the pile opening of the pile hole 11, the top of the triangular support 14 is fixedly connected with the winch 13, the triangular support 14 which stands by three feet is used for placing the winch 13 right above the pile hole 11 more stably, and in addition, the winch 13 is connected with the triangular support 14 in a welding mode.
Moreover, a hanging ring 142 is arranged on one support 141 of the triangular supports 14, and the high-pressure water pipe 15 carries the waterproof electric wire 161 to pass through the hanging ring 142 so as to be connected with the camera group 12, so that the high-pressure water pipe 15 is convenient to pull and place into the pile hole 11, and meanwhile, the waterproof electric wire 161 fixed on the high-pressure water pipe 15 is more orderly and cannot be wound.
In addition, the hanging ring 142 is located at the upper position of the bracket 141, so that the hanging ring 142 is close to the winch 13, the high-pressure water pipe 15 extends downwards and is basically kept flush with the camera group 12 hung by the winch 13, the high-pressure water pipe 15 is further prevented from being excessively wound, and the water pressure of high-pressure water discharged by the high-pressure water pipe 15 which is basically vertically downwards arranged is increased, so that the clear water section 112 is clearer, and the shot picture is clearer.
In addition, a hanging ring 142 is arranged above the camera shooting block 121, the hanging ring 142 is constructed by the steel wire rope 131 through the hook 132, a vertical downward through hole is formed on the camera shooting block 121, the high-pressure water pipe 15 passes through the through hole, so that the high-pressure water pipe 15 passes through the through hole to reach the bottom of the pile hole 11, the mud 111 is sprayed upwards by the high-pressure water more completely, and the water in the clean water section 112 is clearer.
When the camera group 12 is lifted out of the pile hole 11, the high-pressure water pipe 15 and the waterproof electric wire 161 need to be pulled out, so as to prevent the high-pressure water pipe 15 and the waterproof electric wire 161 from curling, which affects the lifting of the camera group 12.
In this embodiment, the winding engine 13 is connected to a motor, the camera group 12 is controlled to move downwards or upwards by controlling the rotation direction of the motor, and the camera group 12 is slowly released or lifted by uniform rotation, so that the winding engine 13 controlled by the motor rotates more stably without manual troublesome operation.
Through the processing of the display screen 16, images of three visual angles are integrated into the same picture, so that the panoramic video and the images at the bottom of the stake hole 11 can be watched, and the detected picture is clearer and more obvious.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (2)
1. The method for determining the bearing layer of the cast-in-place pile by high-pressure water-spraying camera shooting is characterized by comprising the following steps of:
(1) erecting a winch right above the pile hole, and hanging a camera group on the winch through a steel wire rope, wherein the winch is fixed at the top of a triangular support, the triangular support is erected at the pile opening of the pile hole, one of the supports of the triangular support is provided with a hanging ring, and the hanging ring is positioned at the upper part of the support;
(2) a high-pressure water pipe penetrates through the hanging ring to extend downwards and is fixed on the camera group, and the high-pressure water pipe is flush with the camera group; connecting one end of a waterproof wire to the camera group, and connecting the other end of the waterproof wire to the display screen; the waterproof electric wire is fixed on the high-pressure water pipe;
(3) the camera group is slowly placed at the bottom of the pile hole through the winch, the camera group comprises a camera block and a plurality of cameras, the cameras are arranged around the camera block, the shooting range formed by the cameras covers 360 degrees around the camera block, the cameras rotate around the camera block, a through hole in the vertical direction is formed in the camera block, the high-pressure water pipe passes through the through hole to reach the bottom of the pile hole, high-pressure water is sprayed into the bottom of the pile hole through the high-pressure water pipe, a clear water section is formed at the bottom of the pile hole, the rock stratum condition at the bottom of the pile hole is observed through the camera group, and the wall of the hole is in a hole state;
(4) and taking out the camera group through the winch, and taking out the high-pressure water pipe and the waterproof electric wire from the pile hole while taking out the camera group.
2. The method for determining the bearing layer of an injection pile by high pressure waterjet videography as claimed in claim 1, wherein a plurality of said cameras have a light effect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711353299.9A CN108277830B (en) | 2017-12-15 | 2017-12-15 | Method for determining bearing layer of cast-in-place pile through high-pressure water-spraying camera shooting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711353299.9A CN108277830B (en) | 2017-12-15 | 2017-12-15 | Method for determining bearing layer of cast-in-place pile through high-pressure water-spraying camera shooting |
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| CN108277830B true CN108277830B (en) | 2020-11-03 |
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| CN109281341B (en) * | 2018-08-31 | 2020-07-10 | 重庆建筑工程职业学院 | Multifunctional in-hole detection feedback system |
| CN110374634B (en) * | 2019-06-24 | 2020-11-27 | 上海市机械施工集团有限公司 | Automatic tunnel concrete water spraying maintenance device and method for urban rail transit |
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| CN201459736U (en) * | 2008-09-19 | 2010-05-12 | 冯志源 | Device for fast cleaning bottom of pile |
| CN203422326U (en) * | 2013-07-26 | 2014-02-05 | 上海岩土工程勘察设计研究院有限公司 | Shooting device for interior of hollow pile hole |
| CN206052696U (en) * | 2016-08-31 | 2017-03-29 | 中建四局第一建筑工程有限公司 | A kind of pile for prestressed pipe pile defect prosthetic device |
| CN206057195U (en) * | 2016-08-31 | 2017-03-29 | 中国电建集团贵阳勘测设计研究院有限公司 | The detection means of engineering foundation pile sediment thickness |
| CN206686314U (en) * | 2017-04-17 | 2017-11-28 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of submerged structure camera device |
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