CN102912789A - Mechanical hole forming technology applied to karst landform - Google Patents
Mechanical hole forming technology applied to karst landform Download PDFInfo
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- CN102912789A CN102912789A CN2012104104477A CN201210410447A CN102912789A CN 102912789 A CN102912789 A CN 102912789A CN 2012104104477 A CN2012104104477 A CN 2012104104477A CN 201210410447 A CN201210410447 A CN 201210410447A CN 102912789 A CN102912789 A CN 102912789A
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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 the mechanical hole building technology under a kind of special geology, particularly relate to the mechanical hole building technology under a kind of karst landform that is applied to complicated geology, many solution cavities.
Background technology
For the processing under the karst landform, the most of mud off method that adopts of China is constructed now.But for the complicated especially zone of the more zone of solution cavity, geological conditions, adopt mud off still can't play good support action, will produce the phenomenons such as the hole of collapsing, the super filling of concrete; And, in the actual machine pore forming process, if the hole number of times that collapses is more, and after causing sand setting, mud especially behind the hole of collapsing, can't measure concrete hole depth, in the prior art, with traditional mud flush, sand setting etc. thoroughly can not be cleared, can't measure the concrete hole stake degree of depth.
Summary of the invention
The object of the invention is to overcome the defective that the mechanical hole building technology exists under the existing karst landform, and provide mechanical hole building technology under a kind of new karst landform, technical problem to be solved is for the complicated especially zone of the more zone of solution cavity under the karst landform, geological conditions, improve the defective that the mud off method can't play good support action, reduce the probability that the phenomenons such as the hole of collapsing, 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 hole, the hole stake of collapsing, and can make the 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.According to mechanical hole building technology under the karst landform of the present invention's proposition, it comprises following processing step: setting-out; The stock tank of dredging; Bury casing underground; Rig is in place, mud is made; The impact machine pore-forming; Take out slag and mend slurry; Check sediment; Clear hole; Verify; Lay reinforcing cage; Downcomer; Pouring underwater concrete; Wherein: carry out clearly hole with homemade hole cleaning device; And during impact holing, when the solution cavity degree of depth that runs in the work progress 〉=3 meters, steel is set 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 technology under the aforesaid karst landform, wherein when impact holing, this solution cavity degree of depth during less than 3 meters, is taked steel to protect a barrel retaining wall method and is carried out bore operation apart from ground less than 10 meters and solution cavity.
Mechanical hole building technology under the aforesaid karst landform, wherein said hole cleaning device is comprised of movable hinge and conically shaped.
Mechanical hole building technology under the aforesaid karst landform, wherein this movable hinge is comprised of hinge and movable axis, at the affixed movable axis that is provided with of the big end surface of this tapered barrel, hinge is installed above the movable axis.
By technique scheme, the mechanical hole building technology has following advantages and beneficial effect at least under the karst landform of the present invention:
1, for large-scale solution cavity zone, the way that adopts steel to protect barrel retaining wall can reduce the probability that the phenomenons such as the hole of collapsing, the super filling of concrete occur, and can effectively protect the solution cavity zone, plays and saves concrete effect, thereby reach the purpose of saving cost.
2, utilize the device of impurity in this removing small holes, can effectively accelerate the husky cleaning of hole bed mud, the probability that the hole phenomenon that prevents from collapsing occurs guarantees the hole quality of pile and effectively builds, and can make the constructor measure the concrete hole stake degree of depth.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of manual, and for above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is mechanical hole building technical matters flow chart under the karst landform of the present invention.
Fig. 2 is that the mechanical hole building technology is implemented illustration under the 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 technology under the 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 technology under the karst landform of the present invention.
Fig. 5 is the Another Application enforcement illustration that the present invention removes the device of impurity in the small holes.
The specific embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its specific embodiment of mechanical hole building technology, step, feature and effect thereof under the karst landform of foundation the present invention proposition, be described in detail as follows.
As shown in Figure 1, be mechanical hole building technical matters flow chart under the karst landform of the present invention, setting-out, the stock tank of dredging is buried casing underground, rig is in place, mud is made, and impact holing is taken out slag and mended slurry, checks sediment, clear hole, verify is laid reinforcing cage, downcomer, pouring underwater concrete.Wherein, this clear hole process can adopt the device of impurity in the self-control hole cleaning device removing small holes to carry out clearly hole.As shown in Figure 3, be the structural representation of the device of impurity in the removing small holes of mechanical hole building technology under the karst landform of the present invention, the device 10 of removing impurity in the 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 the big end surface of this tapered barrel 1, movable hinge 3 is installed above the movable axis 4.See also Fig. 4, in work progress, the device 10 that to remove impurity in the small holes with the stake machine puts down fast, utilize himself gravity that it is descended in the stake of hole fast, in the time of at the bottom of it arrives the hole stake, because this movable hinge 3 of Water Pressure is opened, at this moment, 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, and as shown in Figure 5, to remove the device 10 of impurity in the small holes at the uniform velocity mentions with this machine, this movable hinge 3 is subjected to influence of hydraulic pressure and silt particle effect of weight and closes, and pours out the silt particle in the device 10 of impurity in this removing small holes, reaches the clearly effect in hole.
Please consult again Fig. 1, wherein, during impact holing, on the basis of mud off, such as the large-scale solution cavity zone of the solution cavity degree of depth above 3 meters, then divide into the steel casing.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, satisfy 5 meters bearing stratum requirements below 23 meters, this hole is large-scale solution cavity zone at 10 meters to 18 meters, then at this solution cavity region division steel casing, namely from aperture to 18 meter, as shown in Figure 2.
If surveying on ground has long solution cavity in the report, and in practice of construction, the solution cavity degree of depth≤10 meter and solution cavity apart from ground≤3 meters, and this solution cavity degree of depth 〉=3 meter all can adopt the way of dividing into the steel casing effectively to protect the solution cavity zone, save concrete amount.
If during the impact machine pore-forming, lower deviation large (because drill bit is run into larger petrographic province, during boring the hole up and down with irregular) can't be divided into the steel casing on the position, hole, at this moment divide into the steel casing for more shallow solution cavity position, save concrete purpose to reach.For example, one 14 meters hole stake, it is the solution cavity zone at-4 meters to-11 meters, and boulder is arranged at-9 meters, at this moment the steel casing is divided into from the aperture to-9 meters,-9 meters to-11 places owing to having boulder to exist may to cause inclined to one side stake, sliding pile, therefore this part no longer arranges the steel casing, namely to divide into the steel casing and will divide into to the zone that can divide into from the aperture.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (4)
1. mechanical hole building technology under the karst landform comprises following processing step:
Setting-out; The stock tank of dredging; Bury casing underground; Rig is in place, mud is made; The impact machine pore-forming; Take out slag and mend slurry; Check sediment; Clear hole; Verify; Lay reinforcing cage; Downcomer; Pouring underwater concrete; It is characterized in that:
Carry out clearly hole with homemade hole cleaning device; And
During impact holing, when the solution cavity degree of depth that runs in the work progress 〉=3 meters, steel is set protects a barrel retaining wall.
2. mechanical hole building technology under the karst landform according to claim 1 is characterized in that when impact holing, and this solution cavity degree of depth during less than 3 meters, is taked steel to protect a barrel retaining wall method and carried out bore operation apart from ground less than 10 meters and solution cavity.
3. mechanical hole building technology under the karst landform according to claim 1 and 2 is characterized in that described hole cleaning device is comprised of movable hinge and conically shaped.
4. mechanical hole building technology under the karst landform according to claim 3 is characterized in that this movable hinge is comprised of hinge and movable axis, at the affixed movable axis that is provided with of the big end surface of this tapered barrel, hinge is installed above the movable axis.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN102912789A true CN102912789A (en) | 2013-02-06 |
| CN102912789B CN102912789B (en) | 2014-12-10 |
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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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195058A (en) * | 2013-04-03 | 2013-07-10 | 四川川交路桥有限责任公司 | Multi-casing structure capable of facilitating bridge-pile construction in cavern development areas and construction method thereof |
| 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 |
| CN105672309A (en) * | 2016-02-22 | 2016-06-15 | 北龙建设集团有限公司 | Encasing method for hole forming of socketed piles at karst terrain through recoverable extra-long steel pile casings |
| 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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195058A (en) * | 2013-04-03 | 2013-07-10 | 四川川交路桥有限责任公司 | Multi-casing structure capable of facilitating bridge-pile construction in cavern development areas and construction method thereof |
| 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 |
| CN105672309A (en) * | 2016-02-22 | 2016-06-15 | 北龙建设集团有限公司 | Encasing method for hole forming of socketed piles at karst terrain through recoverable extra-long steel pile casings |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102912789B (en) | 2014-12-10 |
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