CN111963053B - Positioning system-based hole forming control method and system for cast-in-place pile machine - Google Patents
Positioning system-based hole forming control method and system for cast-in-place pile machine Download PDFInfo
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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
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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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
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- E—FIXED CONSTRUCTIONS
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- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
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- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
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Abstract
The invention provides a positioning system-based hole forming control method and system for a pouring pile machine. The method comprises the following steps: constructing a database platform library of hole forming unit time increment database of the pouring pile machine in different geological types; obtaining elevation sinking frequency data of a lowering drill rod in a lowering process, and obtaining sinking increment data in a unit frequency difference according to the elevation sinking frequency data; inquiring the database platform base of the increment of the pore-forming unit time according to the geological type of the downward drill rod to obtain frequency increment early warning values corresponding to the downward drill rod, wherein the frequency increment early warning values comprise a frequency increment maximum early warning value and a frequency increment minimum early warning value; and comparing the sinking increment data with the frequency increment maximum early warning value or the frequency increment minimum early warning value, and giving out early warning when the sinking increment data is larger than the frequency increment maximum early warning value or smaller than the frequency increment minimum early warning value. The construction quality control risk of clamping a drill rod or turning a drill bit during hole forming of the pouring pile machine is realized, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a positioning system-based hole forming control method and system for a pouring pile machine.
Background
Along with the development of urban planning, super high-rise buildings and large foundation constructions are more and more, pile foundation constructions are large project foundation constructions, but due to geological reasons, the depth of a designed rock is reached, the length of a cast-in-place pile is longer and longer, meanwhile, different geological drill rods are clamped or pile heads fall during the construction of the super high-length cast-in-place pile, so that the hole forming verticality and the construction quality are greatly influenced, and irreversible economic loss is caused to a construction unit, and even the construction period is directly influenced.
In view of this, how to control the hole forming of the cast-in-place pile in the construction process is a technical problem to be solved urgently at present.
Disclosure of Invention
In view of the defects of the prior art, the present invention aims to provide a method and a system for controlling hole forming of a cast-in-place pile machine based on a positioning system, and aims to solve the problem that a drill rod is easy to be clamped or a pile head is easy to fall off in the existing cast-in-place pile hole forming process.
The utility model provides a bored concrete pile machine pore-forming control system based on positioning system, includes bored concrete pile machine pore-forming monitoring system, bored concrete pile machine and transfer the drill pipe connector, wherein, still includes:
the elevation positioning sensor is arranged at the port of the lower drill rod connector, and the bored concrete pile machine hole-forming monitoring system monitors elevation sinking frequency data of the drill rod in the drilling process; leading-in bored concrete pile machine pore-forming control system and data increment processing interaction and evaluation system include: the pile pouring machine forms holes in different geological types, and the unit time increment database platform library and the input interface system are used;
the input interface system is used for the synchronous positioning system to lead the elevation data obtained by the bored concrete pile machine hole-forming monitoring system out sinking increment data in unit frequency difference according to the elevation data;
inquiring the incremental database platform library of the pore-forming unit time according to the geological type of the drill rod to obtain the maximum early warning value or the minimum early warning value of the frequency increment corresponding to the geological type; and comparing the sinking increment data with the frequency increment maximum early warning value or the frequency increment minimum early warning value, and regulating and controlling the hole forming of the cast-in-place pile machine according to a comparison result.
The pile pouring machine pore-forming control system sets up elevation positioning sensor through the port department of putting the drilling rod connector under to utilize pore-forming monitoring system to monitor the drilling rod and be creeping into the elevation data of in-process, will elevation data is synchronous to data increment processing interaction and evaluation system, by data increment processing interaction and evaluation system handle data, obtain the drilling rod and sink the increment data in the unit frequency difference of different grade type geology, will sink the increment data and compare with the frequency increment early warning value in the system, judge according to the contrast result that the pile pouring machine operates normally, can effectively prevent the problem that card drilling rod or drop pile head appear.
Optionally, the bored concrete pile machine pore-forming control system, wherein, the data increment processing interaction and evaluation system further includes: and the export interface system is used for displaying the sinking increment data on the interface display.
Optionally, the bored concrete pile machine pore-forming control system, wherein, data increment processing interaction and evaluation system adopts PHP language development to form.
Based on the same inventive concept, the invention also provides a hole forming control method of the pouring pile machine based on the positioning system, which is based on the hole forming control system of the pouring pile machine, wherein the method comprises the following steps:
constructing a database platform library of hole forming unit time increment database of the pouring pile machine in different geological types;
acquiring elevation data of a lowered drill rod in the lowering process, and acquiring sinking increment data in unit frequency difference according to the elevation data;
inquiring the database platform base of the increment of the pore-forming unit time according to the geological type of the downward drill rod to obtain frequency increment early warning values corresponding to the downward drill rod, wherein the frequency increment early warning values comprise a frequency increment maximum early warning value and a frequency increment minimum early warning value;
and comparing the sinking increment data with the frequency increment maximum early warning value or the frequency increment minimum early warning value, and giving out early warning when the sinking increment data is larger than the frequency increment maximum early warning value or smaller than the frequency increment minimum early warning value.
According to the hole forming control method of the cast-in-place pile machine, the hole forming of the cast-in-place pile, the drill rod sinking value and the early warning value are compared, the comparison result is monitored in real time, the operation of the cast-in-place pile machine is monitored according to the comparison result, the risk of construction quality control of drill rod clamping or drill bit dropping during hole forming of the cast-in-place pile machine is realized, and the construction efficiency is improved.
Optionally, the method for controlling hole forming of a pile driver includes the steps of obtaining elevation data of a drill rod during lowering, and obtaining sinking increment data in a unit frequency difference according to the elevation data, and specifically includes:
monitoring the elevation data of the drill rod in different geological types according to the bored monitoring system of the pile driver (f)1,h1)、(f2,h2)、.....(fn,hn)；
Comparing the elevation data (f)1,h1)、(f2,h2)、.....(fn,hn) Synchronizing to a data increment processing interaction and evaluation system, and calculating sinking increment data delta H/delta F in unit frequency difference by the data increment processing interaction and evaluation systemn-h(n-1)/fn-f(n-1)。
Optionally, the method for controlling hole forming of a cast-in-place pile machine, wherein after the step of constructing a database platform library of unit time increment for hole forming in different geological types by the cast-in-place pile machine, the method further includes:
and adjusting the pore-forming unit time increment database platform library through geological data reported by a geological survey report or an advanced drill survey report, and performing secondary correction on the adjusted pore-forming unit time increment database platform library by utilizing pile test pore-forming data of a cast-in-place pile machine.
Optionally, the hole forming control method for the pile pouring machine further includes: constructing a deviation rectifying control method library;
and generating an alarm for the frequency increment early warning value set in the pore-forming unit time increment database platform library of the subsidence increment data in different geological types, and providing and calling corresponding deviation rectifying measures in the control method library.
Optionally, in the hole forming control method for a pile driver, when the sinking increment data is greater than or equal to the frequency increment minimum warning value and less than or equal to the frequency increment maximum warning value, no warning is issued.
Optionally, in the hole forming control method for the pile pouring machine, the hole forming unit time increment database platform library is constructed by using an SQL data module.
Optionally, the hole forming control method for the cast-in-place pile machine, wherein the deviation rectification measure includes adjusting power of the cast-in-place pile machine, adjusting lowering frequency of the lowered drill rod, and adjusting lowering angle of the lowered drill rod.
Drawings
Fig. 1 is a schematic structural diagram of a positioning system-based hole forming control system of a pouring pile machine according to an embodiment of the present invention;
FIG. 2 is a schematic view of a display interface of a data incremental processing interaction and evaluation system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a positioning system-based hole forming control method of a pouring pile machine according to an embodiment of the present invention, and fig. 2 is a schematic flow chart of a positioning system-based hole forming control method of a pouring pile machine according to an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In high-rise buildings, pile foundations are widely applied. The pile foundation is a deep foundation consisting of piles and pile bearing platforms (bearing platforms for short) connected with the pile tops or a single pile foundation connected with the pile foundation through columns, and is called the pile foundation for short. If the pile body is completely buried in the soil and the bottom surface of the bearing platform is contacted with the soil body, the pile body is called a low bearing platform pile foundation; when the upper part of the pile body is exposed out of the ground and the bottom of the pile cap is positioned above the ground, the pile body is called a high pile cap pile foundation. However, the depth of the cast-in-place pile is designed to be higher and lower due to geological reasons, the length of the cast-in-place pile is longer and longer, and meanwhile, the verticality and construction quality of a formed hole are greatly influenced by different geological drill rods or pile heads falling in the construction of the ultra-long cast-in-place pile, so that irreversible economic loss is caused to a construction unit, and the construction period is even directly influenced.
At present, passive field observation or experience is mostly adopted to judge whether a drilling machine clamps a drill rod or drops a pile head, so that the problems of inaccurate judgment and after-judgment result are easily caused.
Based on this, the present invention provides a solution to the above technical problem based on a positioning system, the details of which will be explained in the following embodiments.
Referring to fig. 1, as shown in the drawings, the present invention provides a positioning system based hole forming control system for a pile pouring machine, including: the method comprises the steps that a bored pile machine hole forming monitoring system 20, a bored pile machine 10, a lower drill rod connector 100 and an elevation positioning sensor 101 are arranged at a port of the lower drill rod connector 100, and elevation data of a drill rod in the drilling process are monitored based on the hole forming monitoring system 20; and a data incremental processing interaction and evaluation system 30. Wherein the data incremental processing interaction and evaluation system 30 comprises: a pile pouring machine forms holes in different geological types, and a unit time increment database platform library and an input interface system 300 are arranged; the input interface system is used for synchronizing the elevation data obtained by the bored concrete pile machine hole-forming monitoring system and deriving sinking increment data in unit frequency difference according to the elevation data; inquiring the incremental database platform library of the pore-forming unit time according to the geological type of the drill rod to obtain the maximum early warning value or the minimum early warning value of the frequency increment corresponding to the geological type; and comparing the sinking increment data with the frequency increment maximum early warning value or the frequency increment minimum early warning value, and regulating and controlling the hole forming of the cast-in-place pile machine according to a comparison result.
In this embodiment, the hole-forming monitoring system 20 may be used to monitor the sinking condition of the drill rod of the pile-pouring machine by means of the existing GPS positioning or beidou navigation positioning system. The type of the pile-pouring machine 10 can be selected according to the site construction, and is not limited herein. The elevation positioning sensor is a common elevation positioning sensor in the prior art, and can be used for accurately positioning the elevation, and the specific model and the installation mode are not limited. The data increment processing interaction and evaluation system is developed by adopting a PHP language. The PHP language is adopted for development, so that the data increment processing interaction and evaluation system is more convenient to operate, and the system updating is facilitated.
In one implementation of this embodiment, the data incremental processing interaction and evaluation system 30 further includes a export interface system for displaying the subsidence incremental data on an interface display. With reference to fig. 2, as shown in fig. 2, the data increment processing interaction and evaluation system 30 includes geological condition pre-evaluation values, (1), class, (2), class, (3), class, (4), class (5), and class (6), each class being understood to represent a geological condition; a frequency increment maximum warning value display, such as max1.. an input value, an F (frequency)/increment settlement value, and a frequency increment minimum warning value min1.. a.
Based on the same inventive concept, the method also provides a hole forming control method of the pouring pile machine based on the positioning system, as shown in fig. 3, the method is based on the pouring pile machine control system, the method comprises:
s10, constructing a database platform library of hole forming unit time increment of the cast-in-place pile machine in different geological types;
specifically, geology is classified according to geological characteristics, and may be classified into (1), (2), (3), (4), (5), (6), …, and the like. For example, class (1) indicates clay layers, class (2) indicates weathering layers, class (3) indicates rock layers, and the like. Storing the unit time increment of the bored holes of each type of geological layer by the bored pile machine to form a database platform library of the unit time increment of the bored holes of the bored pile machine in different geological types; setting a frequency increment early warning value of each geological type according to the constructed database platform library, wherein the frequency increment early warning value is Max1 and the frequency increment minimum early warning value is Min1 as the type (1) soil layer; (2) and in the soil-like stratum, the corresponding maximum early warning value of the frequency increment is Max2, and the minimum early warning value of the frequency increment is Min 2. It is easy to understand that the formed database platform library of the unit time increment of the formed hole can be a pouring pile machine with one model or pouring pile machines with different models. Namely, a database platform library of unit time increment for hole forming in different geological types of the pouring pile machines of different models can be constructed.
S20, acquiring elevation data of the lowered drill rod in the lowering process, and obtaining sinking increment data in unit frequency difference according to the elevation data;
specifically, the step S20 specifically includes:
s210, monitoring elevation data of the drill pipe to be placed in different geological types according to a bored concrete pile machine hole-forming monitoring system (f)1,h1)、(f2,h2)、.....(fn,hn) Wherein h represents height, f represents frequency, and n is a positive integer.
Specifically, the set elevation positioning sensor is utilized to detect elevation data of the drill rod, the obtained elevation data are monitored in real time by a bored concrete pile machine hole forming monitoring system, and the elevation data are transmitted to a data increment processing interaction and evaluation system.
S220, the elevation data (f)1,h1)、(f2,h2)、.....(fn,hn) Synchronizing to a data increment processing interaction and evaluation system, and calculating sinking increment data delta H/delta F in unit frequency difference by the data increment processing interaction and evaluation systemn-h(n-1)/fn-f(n-1)。
Specifically, the data increment processing interaction and evaluation system receives elevation data transmitted by the bored concrete pile machine hole-forming monitoring system to realize elevationAnd (4) synchronizing data. And (c) calculating sinking increment data in the unit frequency difference without calculating in the system for the elevation data, wherein the data is delta H/delta F is Hn-h(n-1)/fn-f(n-1)。
S30, inquiring the increment database platform library of the pore-forming unit time according to the geological type of the lowered drill rod to obtain frequency increment early warning values corresponding to the lowered drill rod, wherein the frequency increment early warning values comprise a frequency increment maximum early warning value and a frequency increment minimum early warning value;
specifically, the data increment processing interaction and evaluation system is set, the sinking of the drill rod is tracked, the geological type of the drill rod is monitored, the corresponding frequency increment early warning value is selected according to the geological type of the current drill rod, namely, the frequency increment maximum early warning value and the frequency increment minimum early warning value are selected, and the frequency increment early warning value is used as the standard for monitoring the lowering of the drill rod.
And S40, comparing the sinking increment data with the frequency increment maximum early warning value or the frequency increment minimum early warning value, and giving out early warning when the sinking increment data is larger than the frequency increment maximum early warning value or smaller than the frequency increment minimum early warning value.
Specifically, the sinking increment data (namely the data for monitoring the implementation of the pile pouring machine)
) When is coming into contact with
Within the range, the quality is controllable in the hole forming control of the reverse circulation super-long cast-in-place pile in the geology of the type (i)
Or
The incremental data processing interaction and evaluation processing system sends out early warning in time and informs an operator to give out early warning in time.
In an implementation manner of this embodiment, the geological data of the survey report or the advanced drilling survey report may be used to adjust the incremental data per unit time of hole forming in the corresponding geological type of the cast-in-place pile machine (i.e., update the database platform library per unit time of hole forming), and the updated database platform library per unit time of hole forming is used to perform secondary correction on the data of hole forming in the test pile of the cast-in-place pile machine.
In an implementation manner of this embodiment, a scheme is provided for correcting the deviation of the condition that the frequency increment early warning value is exceeded, for example, in the geology of type (3), when the sinking increment data is greater than the frequency increment maximum early warning value, it indicates that the sinking speed of the drill rod is too fast at this time (the pile head may drop if the sinking speed continues), at this time, the grouting pile machine may be stopped, the power of the grouting pile machine is reduced by 20%, and the lowering angle of the drill rod is readjusted. It is easy to understand that the herein-described method for stopping the pouring pile machine reduces the power of the pouring pile machine by 20%, and adjusting the lowering angle of the drill rod is a deviation-correcting scheme (also referred to as deviation-correcting measure). The concrete deviation rectifying scheme can be formulated according to the actual construction condition.
When the situation that the bored concrete pile machine gives an alarm in a certain geological type is monitored, corresponding deviation rectifying measures can be called through a preset program to deal with the situation, and accidents are prevented. Due to the fact that the regulation and control method of the pore-forming equipment is monitored in real time and put forward in time, pore-forming of pore-forming on different geological layers is guaranteed not to exceed an early warning value in the whole process, and then pore-forming construction efficiency and construction quality are guaranteed.
In this embodiment, the pore-forming unit time increment database platform library may be constructed by using an SQL data module. The data incremental processing interaction and evaluation system can be developed by adopting a PHP language.
In summary, the invention provides a positioning system-based hole forming control method and system for a pouring pile machine. The method comprises the following steps: constructing a database platform library of hole forming unit time increment database of the pouring pile machine in different geological types; obtaining elevation sinking frequency data of a lowering drill rod in a lowering process, and obtaining sinking increment data in a unit frequency difference according to the elevation sinking frequency data; inquiring the database platform base of the increment of the pore-forming unit time according to the geological type of the downward drill rod to obtain frequency increment early warning values corresponding to the downward drill rod, wherein the frequency increment early warning values comprise a frequency increment maximum early warning value and a frequency increment minimum early warning value; and comparing the sinking increment data with the frequency increment maximum early warning value or the frequency increment minimum early warning value, and giving out early warning when the sinking increment data is larger than the frequency increment maximum early warning value or smaller than the frequency increment minimum early warning value. The drilling rod sinking value and the drilling rod hole forming value of the cast-in-place pile are compared with the early warning value, the comparison result is monitored in real time, and the operation of the cast-in-place pile machine is monitored according to the comparison result, so that the risk of construction quality control of clamping the drilling rod or dropping a drill bit when the cast-in-place pile machine forms the holes is realized, and the construction efficiency is improved.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a bored concrete pile machine pore-forming control system based on positioning system, includes bored concrete pile machine pore-forming monitoring system, bored concrete pile machine and transfer the drilling rod connector, its characterized in that still includes:
the elevation positioning sensor is arranged at the port of the lower drill rod connector, and the bored concrete pile machine hole-forming monitoring system monitors elevation sinking frequency data of the drill rod in the drilling process; leading-in bored concrete pile machine pore-forming control system and data increment processing interaction and evaluation system include: the pile pouring machine forms holes in different geological types, and the unit time increment database platform library and the input interface system are used;
the input interface system is used for synchronizing the elevation data obtained by the bored concrete pile machine hole-forming monitoring system and deriving sinking increment data in unit frequency difference according to the elevation data;
inquiring the incremental database platform library of the pore-forming unit time according to the geological type of the drill rod to obtain the maximum early warning value or the minimum early warning value of the frequency increment corresponding to the geological type; and comparing the sinking increment data with the frequency increment maximum early warning value or the frequency increment minimum early warning value, and regulating and controlling the hole forming of the cast-in-place pile machine according to a comparison result.
2. The bored concrete pile machine hole-forming control system of claim 1, wherein the data incremental processing interaction and evaluation system further comprises: and the export interface system is used for displaying the sinking increment data on an interface display.
3. The system of claim 1, wherein the data incremental processing interaction and evaluation system is developed using PHP.
4. A bored concrete pile machine hole-forming control method based on a positioning system, the bored concrete pile machine hole-forming control system based on any one of claims 1 to 3, characterized in that the method comprises the steps of:
constructing a database platform library of hole forming unit time increment database of the pouring pile machine in different geological types;
obtaining elevation sinking frequency data of a lowering drill rod in a lowering process, and obtaining sinking increment data in a unit frequency difference according to the elevation sinking frequency data;
inquiring the database platform base of the increment of the pore-forming unit time according to the geological type of the downward drill rod to obtain frequency increment early warning values corresponding to the downward drill rod, wherein the frequency increment early warning values comprise a frequency increment maximum early warning value and a frequency increment minimum early warning value;
and comparing the sinking increment data with the frequency increment maximum early warning value or the frequency increment minimum early warning value, and sending out early warning when the sinking increment data is greater than the frequency increment maximum early warning value or less than the frequency increment minimum early warning value.
5. The hole forming control method for the pile pouring machine according to claim 4, wherein the step of obtaining elevation subsidence frequency data of the lowered drill rod in the lowering process and obtaining subsidence increment data in unit frequency difference according to the elevation subsidence frequency data specifically comprises:
monitoring the elevation subsidence frequency data (f) of the downward drill rod in different geological types according to the bored monitoring system of the pile pouring machine1,h1)、(f2,h2)、.....(fn,hn)；
(ii) mapping said elevation dip frequency data (f)1,h1)、(f2,h2)、.....(fn,hn) Synchronizing to a data increment processing interaction and evaluation system, and calculating sinking increment data delta H/delta F in unit frequency difference by the data increment processing interaction and evaluation systemn-h(n-1)/fn-f(n-1)Wherein h represents height, f represents frequency, and n is a positive integer.
6. The hole-forming control method for the pouring pile machine according to claim 4, wherein after the step of constructing the database platform library of the unit time increment of the hole-forming in different geological types by the pouring pile machine, the method further comprises the following steps:
and adjusting the pore-forming unit time increment database platform library through geological data reported by a geological survey report or an advanced drill survey report, and performing secondary correction on the pore-forming data of the test pile of the cast-in-place pile machine by utilizing the adjusted pore-forming unit time increment database platform library.
7. The hole-forming control method for the pile pouring machine as claimed in claim 4, further comprising: constructing a deviation rectifying control method library;
and generating an alarm for the frequency increment early warning value set in the pore-forming unit time increment database platform library of the subsidence increment data in different geological types, and providing and calling corresponding deviation rectifying measures in the control method library.
8. The hole-forming control method for the pouring pile machine according to claim 4, characterized in that when the sinking increment data is greater than or equal to the frequency increment minimum early warning value and less than or equal to the frequency increment maximum early warning value, no early warning is given out.
9. The hole-forming control method for the pile pouring machine according to claim 4, wherein the hole-forming unit time increment database platform library is constructed by an SQL data module.
10. The hole-forming control method for a pile-pouring machine according to claim 7, wherein the deviation-correcting measures include one or more of adjusting the power of the pile-pouring machine, adjusting the lowering frequency of the lowered drill rod, and adjusting the lowering angle of the lowered drill rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650955.7A CN111963053B (en) | 2020-07-08 | 2020-07-08 | Positioning system-based hole forming control method and system for cast-in-place pile machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010650955.7A CN111963053B (en) | 2020-07-08 | 2020-07-08 | Positioning system-based hole forming control method and system for cast-in-place pile machine |
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| CN111963053A CN111963053A (en) | 2020-11-20 |
| CN111963053B true CN111963053B (en) | 2021-12-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104153353A (en) * | 2014-08-22 | 2014-11-19 | 中铁六局集团天津铁路建设有限公司 | Method for determining elevation of bored pile through cross line laser |
| CN105887887A (en) * | 2016-01-27 | 2016-08-24 | 济南城建集团有限公司 | Underwater concrete grouting pile top elevation control construction method |
| US9593457B2 (en) * | 2014-08-04 | 2017-03-14 | Vac-Tron Equipment, Llc | Method and system to manufacture native soil flowable fill |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9593457B2 (en) * | 2014-08-04 | 2017-03-14 | Vac-Tron Equipment, Llc | Method and system to manufacture native soil flowable fill |
| CN104153353A (en) * | 2014-08-22 | 2014-11-19 | 中铁六局集团天津铁路建设有限公司 | Method for determining elevation of bored pile through cross line laser |
| CN105887887A (en) * | 2016-01-27 | 2016-08-24 | 济南城建集团有限公司 | Underwater concrete grouting pile top elevation control construction method |
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Inventor after: Zhang Xing Inventor after: Zhu Bing Inventor after: Xing Houbing Inventor after: Huang Chenguang Inventor after: Chen Kai Inventor after: Zhang Xu Inventor after: Liu Wenjie Inventor after: Zheng Shuang Inventor after: Chen Liang Inventor after: Luo Zhaomin Inventor before: Zhang Xing Inventor before: Xing Houbing Inventor before: Liu Wenjie Inventor before: Zheng Shuang Inventor before: Chen Liang Inventor before: Luo Zhaomin Inventor before: Zhu Bing |