CN102912789B - Mechanical hole forming technology applied to karst landform - Google Patents
Mechanical hole forming technology applied to karst landform Download PDFInfo
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- CN102912789B CN102912789B CN201210410447.7A CN201210410447A CN102912789B CN 102912789 B CN102912789 B CN 102912789B CN 201210410447 A CN201210410447 A CN 201210410447A CN 102912789 B CN102912789 B CN 102912789B
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Abstract
The invention relates to a mechanical hole forming technology applied to karst landform. The technology comprises the following steps of: laying off and positioning; digging a mud pit; burying a pile casing; arranging a drill in place and making mud; forming holes by using an impact machine, wherein when a karst cave is greater than or equal to 3m in depth during construction, a steel pile casing dado is arranged; pumping out sediment and supplementing mud; checking the sediment; clearing off the holes by using a home-made hole cleaning device; checking the holes; arranging a steel reinforcement cage; arranging guide pipes; and pouring underwater concrete. By the mechanical hole forming technology, the probability of occurrence of hole collapse, overfilling of concrete and the like can be lowered, karst cave areas can be effectively protected, the effect of saving concrete is achieved and the cost is further reduced; moreover, by the mechanical hole forming technology, a unit in charge of construction can be effectively helped to clear off sediment from the bottoms of holes, hole piles in collapsed holes can be cleared quickly, the specific depth of a hole pipe can be measured by construction workers.
Description
Technical field
The present invention relates to a kind of mechanical hole building method under special geology, particularly relate to a kind of mechanical hole building method under karst landform that is applied to complicated geology, many solution cavities.
Background technology
For the processing under karst landform, the most of mud off method that adopts of China is constructed now.But for the complicated especially region of the more region of solution cavity, geological conditions, adopt mud off still cannot play good support action, will produce the phenomenons such as collapse hole, the super filling of concrete; And, in actual machine pore forming process, if collapse hole number of times is more, and after causing sand setting, mud especially after collapse hole, cannot measure concrete hole depth, in prior art, with traditional mud flush, sand setting etc. thoroughly can not be cleared, cannot measure the concrete hole stake degree of depth.
Summary of the invention
The object of the invention is to overcome the defect that under existing karst landform, mechanical hole building technology exists, and provide a kind of mechanical hole building method under new karst landform, technical problem to be solved is for the complicated especially region of the more region of solution cavity under karst landform, geological conditions, improve the defect that mud off method cannot play good support action, reduce the probability that the phenomenons such as collapse hole, the super filling of concrete occur; And the cleaning that effectively helps unit in charge of construction to solve hole bed mud sand, accelerate the clear hole speed to the stake of collapse hole hole, and can make constructor measure the concrete hole stake degree of depth.
The object of the invention to solve the technical problems realizes by the following technical solutions.Mechanical hole building method under the karst landform proposing according to the present invention, it comprises following processing step: setting-out; The stock tank of dredging; Bury casing underground; Rig is in place, mud is made; Impact holing; Take out slag and mend slurry; Check sediment; Clear hole; Verify; Lay reinforcing cage; Downcomer; Pouring underwater concrete; Wherein: with homemade hole cleaning device, carry out hole clearly, this device is comprised of conically shaped and hinge, and this hinge is comprised of movable hinge and movable axis, the affixed movable axis that is provided with of big end surface at this conically shaped, is provided with this movable hinge above movable axis; And during impact holing, when the solution cavity degree of depth running in work progress is greater than 3 meters, steel is set and protects a barrel retaining wall.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Mechanical hole building method under aforesaid karst landform, wherein when impact holing, this solution cavity degree of depth≤10 meter and solution cavity be apart from ground≤3 meter, and during this solution cavity degree of depth >=3 meter, take steel to protect a barrel retaining wall method and carry out bore operation.
By technique scheme, under karst landform of the present invention, mechanical hole building method at least has following advantages and beneficial effect:
1,, for large-scale solution cavity region, the way that adopts steel to protect barrel retaining wall, can reduce the probability that the phenomenons such as collapse hole, the super filling of concrete occur, and can effectively protect solution cavity region, plays and saves concrete effect, thereby reach cost-saving object.
2, utilize the device of impurity in this removing small holes, can effectively accelerate the husky cleaning of hole bed mud, prevent the probability that collapse hole phenomenon occurs, guarantee hole quality of pile and effectively build, and can make constructor measure the concrete hole stake degree of depth.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of manual, and for above and other object of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is mechanical hole building method process chart under karst landform of the present invention.
Fig. 2 is mechanical hole building embodiment of the method figure under karst landform of the present invention.
Fig. 3 is the structural representation of the device of impurity in the removing small holes of mechanical hole building method under karst landform of the present invention.
Fig. 4 is the application implementation illustration of the device of impurity in the removing small holes of mechanical hole building method under karst landform of the present invention.
Fig. 5 is the Another Application enforcement illustration that the present invention removes the device of impurity in small holes.
The specific embodiment
For further setting forth the present invention, reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to its specific embodiment of mechanical hole building method, step, feature and effect thereof under the karst landform proposing according to the present invention, be described in detail as follows.
As shown in Figure 1, be mechanical hole building method process chart under karst landform of the present invention, setting-out, the stock tank of dredging, buries casing underground, rig is in place, mud is made, and impact holing is taken out slag and mended slurry, checks sediment, clear hole, verify, lays reinforcing cage, downcomer, pouring underwater concrete.Wherein, the device that this clear hole process can adopt self-control hole cleaning device to remove impurity in small holes carries out hole clearly.As shown in Figure 3, be the structural representation of the device of impurity in the removing small holes of mechanical hole building method under karst landform of the present invention, the device 10 of removing impurity in small holes is comprised of conically shaped 1 and hinge 2, and this hinge 2 is comprised of movable hinge 3 and movable axis 4.At the affixed movable axis 4 that is provided with of big end surface of this conically shaped 1, movable axis 4 is provided with movable hinge 3 above.Refer to Fig. 4, in work progress, with stake machine, the device 10 of impurity in this removing small holes is put down fast, utilize himself gravity that it is declined fast in the stake of hole, in the time of at the bottom of it arrives hole stake, because this movable hinge 3 of Water Pressure is opened, now, water at the bottom of this hole stake and silt particle enter in the device 10 of impurity in this removing small holes together, afterwards, as shown in Figure 5, with this machine, the device 10 of impurity in this removing small holes is at the uniform velocity mentioned, this movable hinge 3 is subject to influence of hydraulic pressure and silt particle effect of weight and closes, pour out the silt particle in the device 10 of impurity in this removing small holes, reach the effect in hole clearly.
Referring again to Fig. 1, wherein, during impact holing, on the basis of mud off, in case of the solution cavity degree of depth surpasses the large-scale solution cavity region of 3 meters, divide into steel and protect bucket.For example, in practical operation, ground is surveyed and is reported that being presented at the stake of 40# hole sees middle decomposed rock at 23 meters of, 23 meters of following satisfied 5 meters of bearing stratum requirements, this hole is large-scale solution cavity region at 10 meters to 18 meters, at this solution cavity region division steel, protects bucket, from aperture to 18 meter, as shown in Figure 2.
If surveyed on ground, have long solution cavity in report, and in practice of construction, the solution cavity degree of depth≤10 meter and solution cavity are apart from ground≤3 meter, and these solution cavity degree of depth >=3 meter, all can adopt to divide into the way that steel protects bucket and effectively protect solution cavity region, save concrete amount.
If during impact machine pore-forming, on position, hole, lower deviation large (because drill bit is encountered larger petrographic province, during boring hole up and down by irregular), cannot divide into steel and protect bucket, at this moment for more shallow solution cavity position, divide into steel and protect bucket, to reach, save concrete object.For example, the hole stake of one 14 meters, at-4 meters to-11 meters, it is solution cavity region, and at-9 meters of, there is boulder, at this moment steel protect bucket from aperture, divide into-9 meters,-9 meters may be caused inclined to one side stake, sliding pile to-11 places owing to there being boulder to exist, therefore this part no longer arranges steel, protect bucket, divide into steel and protect bucket and will divide into the region that can divide into from aperture.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (2)
1. a mechanical hole building method under karst landform, comprises following processing step:
Setting-out; The stock tank of dredging; Bury casing underground; Rig is in place, mud is made; Impact holing; Take out slag and mend slurry; Check sediment; Clear hole; Verify; Lay reinforcing cage; Downcomer; Pouring underwater concrete; It is characterized in that:
With homemade hole cleaning device, carry out hole clearly, this device is comprised of conically shaped and hinge, and this hinge is comprised of movable hinge and movable axis, and the affixed movable axis that is provided with of big end surface at this conically shaped, is provided with this movable hinge above movable axis; And
During impact holing, when the solution cavity degree of depth running in work progress is greater than 3 meters, steel is set and protects a barrel retaining wall.
2. mechanical hole building method under karst landform according to claim 1, is characterized in that when impact holing, and this solution cavity degree of depth≤10 meter and solution cavity be apart from ground≤3 meter, and during this solution cavity degree of depth >=3 meter, takes steel to protect a barrel retaining wall method and carry out bore operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410447.7A CN102912789B (en) | 2012-10-24 | 2012-10-24 | Mechanical hole forming technology applied to karst landform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410447.7A CN102912789B (en) | 2012-10-24 | 2012-10-24 | Mechanical hole forming technology applied to karst landform |
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| Publication Number | Publication Date |
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| CN102912789A CN102912789A (en) | 2013-02-06 |
| CN102912789B true CN102912789B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210410447.7A Active CN102912789B (en) | 2012-10-24 | 2012-10-24 | Mechanical hole forming technology applied to karst landform |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195058B (en) * | 2013-04-03 | 2015-08-19 | 四川川交路桥有限责任公司 | Be convenient to solution cavity and grow the method that regional bridge pier adopts many casings to construct |
| CN104141311A (en) * | 2014-04-29 | 2014-11-12 | 中建四局第五建筑工程有限公司 | Mechanical holing method for protecting wall and structure formed with method |
| CN104947672A (en) * | 2015-07-01 | 2015-09-30 | 北京天润建设有限公司 | Prefabricating tubular pile core clearing device |
| CN105672309B (en) * | 2016-02-22 | 2017-11-28 | 北龙建设集团有限公司 | The recyclable overlength steel pile casting wall protecting method of karst area embedded rock pile pore-forming |
| CN106351575A (en) * | 2016-11-07 | 2017-01-25 | 赵宽学 | Hole-protecting and pile-drilling method |
| CN112030956A (en) * | 2020-07-15 | 2020-12-04 | 中交第一航务工程局有限公司 | Karst stratum bored pile construction method |
Citations (6)
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| US4364441A (en) * | 1980-11-12 | 1982-12-21 | States Engineering Corporation | Hole cleaning device for augers |
| JPH06136745A (en) * | 1992-04-28 | 1994-05-17 | J D F:Kk | Construction method for hollow widened bottom cast-in-place concrete pile |
| CN201605577U (en) * | 2009-12-28 | 2010-10-13 | 中国核工业华兴建设有限公司 | Borehole cleaning device for mechanical-boring cast-in-place pile |
| CN102094419A (en) * | 2011-03-09 | 2011-06-15 | 中铁六局集团有限公司 | Method for forming drilled pile in foundation with silty sand layer |
| CN102146672A (en) * | 2011-03-15 | 2011-08-10 | 中铁六局集团有限公司 | Method for constructing pile foundation in karst area |
| CN102605768A (en) * | 2012-03-31 | 2012-07-25 | 中建三局建设工程股份有限公司 | Bore cleaning device for cast-in-place bored piles |
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2012
- 2012-10-24 CN CN201210410447.7A patent/CN102912789B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4364441A (en) * | 1980-11-12 | 1982-12-21 | States Engineering Corporation | Hole cleaning device for augers |
| JPH06136745A (en) * | 1992-04-28 | 1994-05-17 | J D F:Kk | Construction method for hollow widened bottom cast-in-place concrete pile |
| CN201605577U (en) * | 2009-12-28 | 2010-10-13 | 中国核工业华兴建设有限公司 | Borehole cleaning device for mechanical-boring cast-in-place pile |
| CN102094419A (en) * | 2011-03-09 | 2011-06-15 | 中铁六局集团有限公司 | Method for forming drilled pile in foundation with silty sand layer |
| CN102146672A (en) * | 2011-03-15 | 2011-08-10 | 中铁六局集团有限公司 | Method for constructing pile foundation in karst area |
| CN102605768A (en) * | 2012-03-31 | 2012-07-25 | 中建三局建设工程股份有限公司 | Bore cleaning device for cast-in-place bored piles |
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| CN102912789A (en) | 2013-02-06 |
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