CN203487528U - Underground river karst cave treatment structure for underwater pier drilled pile construction in beaded type karst area - Google Patents

Underground river karst cave treatment structure for underwater pier drilled pile construction in beaded type karst area Download PDF

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Publication number
CN203487528U
CN203487528U CN201320621965.3U CN201320621965U CN203487528U CN 203487528 U CN203487528 U CN 203487528U CN 201320621965 U CN201320621965 U CN 201320621965U CN 203487528 U CN203487528 U CN 203487528U
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China
Prior art keywords
casing
underground river
construction
drilled pile
solution cavity
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Expired - Fee Related
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CN201320621965.3U
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Chinese (zh)
Inventor
侯田海
田杰
郭富明
任宵
周吉学
崔旭
任少强
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China Railway 20th Bureau Group Corp
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China Railway 20th Bureau Group Corp
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Priority to CN201320621965.3U priority Critical patent/CN203487528U/en
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Abstract

The utility model discloses an underground river karst cave treatment structure for underwater pier drilled pile construction in a beaded type karst area. A construction drilled pile passes through one underground river karst cave and a lower karst cave located below the underground river karst cave from top to bottom. The treatment structure comprises a steel casing, an inner casing and a plugging layer, wherein the steel casing is embedded at the position of the construction drilled pile before drilling construction, the inner casing is lowered to an underground river bed through a drilled hole after the drilled pile drills into the underground river karst cave from top to bottom, and the plugging layer is formed after grouting and plugging are performed at the bottom of the inner casing. A supporting cushion layer composed of rock particles is reserved at the bottom of the inner casing before grouting and plugging are performed. The length of the steel casing is larger than the depth of water at the position of the current construction drilled pile; an installation hole allowing the inner casing to be installed is formed in the underground river bed. The underground river karst cave treatment structure is reasonable in structural design, simple and convenient to construct, good in treatment effect and capable of simply and rapidly completing the underground river karst cave treatment process in the drilled pile construction process in the karst area in a low-price and high-quality mode.

Description

In the water of bead string type karst area, pier drilled pile construction is processed structure with underground river solution cavity
Technical field
The utility model belongs to Treatment technology of karst cave field, especially relates to pier drilled pile construction in the water of a kind of bead string type karst area and processes structure with underground river solution cavity.
Background technology
Nowadays, while carrying out karst region heavy caliber, deep-water bridge pile foundation construction, mainly there is defect and the deficiency of following several respects: the first, at bridge pile foundation, pass through in comparatively complicated karst region construction, designing unit not to unit in charge of construction provide comparatively intactly, systematically theoretical foundation and construction technology file, unit in charge of construction wades across the stream by feeling the way, and the knotty problem running in construction is many, difficult, the second, perfect not for karst region design of piled bridge foundation directive document, lack systemic, comprehensive and operability, three, high for construction technical requirement, bridge foundation sedimentation and bearing capacity, stability criterion require tight work items, and the fundamental research of lava overlay area pile foundation construction is difficult to meet practice of construction demand, as the domestic provincial boundaries duckweed water grand bridge of the long Hunan section in Kun Kezhuan Hangzhoupro, Shanghai that is 350km for design speed per hour, Liling grand bridge is positioned at territory, strong Karst Area, two bridges are the long auspicious cloud tunnel of interval 274m only, bridge pile foundation is all in bead string type, in the molten region of underground river flow rock, scope is big, more than quantity, in national Passenger dedicated railway Bridge construction history, still belong to the first, and at the karst area of coverage, in solution cavity and corrosion fissure, underground water is grown, good water permeability, the water yield is large, complicated geological, particularly Liling grand bridge is across duckweed water river, 180 meters of river width, 4~6 meters of the depth of waters, navigation at a specified future date is planned to VII level, part stake reaches 90 meters, indivedual pile foundations are passed through 10, eclipsed form solution cavity, high and the inclination of strata of rock strength, pass through underground river stream simultaneously, difficulty of construction is large, dangerous high, very easily there is solution cavity unstability, Collapse Deformation, the careless slightly bit freezing that causes, bury drills, affect programming.
At present, karst region drilled pile construction method has following four kinds: mud wall building method, static pressure chemical grouting method, casing follow-up step and NE BY ENERGY TRANSFER METHOD.According to conventional construction, adopt the construction of casing follow-up step, meet the processing method of super-huge solution cavity completely.If but the quantity that needs construction drill stake is more and stake is long when larger, needs the quantity of machined steel casing very large.Thereby, nowadays lack pier drilled pile construction in the bead string type karst area water that a kind of simple in structure, reasonable in design and easy construction, solution cavity treatment effect are good and process structure with underground river solution cavity, can be easy, quick, low cost and high-quality complete the underground river solution cavity processing procedure in bored pile construction process in karst region process.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, provide pier drilled pile construction in the water of a kind of bead string type karst area to process structure with underground river solution cavity, its reasonable in design, easy construction and treatment effect are good, can be easy, quick, low cost and high-quality complete the underground river solution cavity processing procedure in bored pile construction process in karst region process.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: in the water of a kind of bead string type karst area, pier drilled pile construction is processed structure with underground river solution cavity, a underground river solution cavity and a lower solution cavity that is positioned at solution cavity below, underground river are passed through in institute's construction drill stake from top to bottom, it is characterized in that: comprise the steel casing of burying underground before drilling construction on institute's construction drill stake stake position, from top to bottom creep into pass through after the solution cavity of underground river boring transfer to the interior casing on riverbed, underground river and internally casing bottom carry out the plugged zone forming after slip casting shutoff, and before slip casting shutoff, there is the bed course that one deck is comprised of the rock particles after being smashed by rig described interior casing bottom, the length of described steel casing is greater than the depth of water of current institute's construction drill stake present position, and described steel casing is outer casing, and the internal diameter of described interior casing is greater than the stake footpath of institute's construction drill stake and the internal diameter that its external diameter is less than described outer casing, on the riverbed on described underground river, be provided with the installing hole of installing for interior casing.
In the water of above-mentioned bead string type karst area, pier drilled pile construction is processed structure with underground river solution cavity, it is characterized in that: the hole depth of described installing hole is 1m left and right.
In the water of above-mentioned bead string type karst area, pier drilled pile construction is processed structure with underground river solution cavity, it is characterized in that: described interior casing is formed by a plurality of interior casing section assemblings.
In the water of above-mentioned bead string type karst area, pier drilled pile construction is processed structure with underground river solution cavity, it is characterized in that: between neighbouring two described interior casing sections, with welding manner, be fixed connection.
In the water of above-mentioned bead string type karst area, pier drilled pile construction is processed structure with underground river solution cavity, it is characterized in that: the top height of described interior casing is not less than the top height of described outer casing, and interior casing is coaxial laying with described outer casing.
In the water of above-mentioned bead string type karst area, pier drilled pile construction is processed structure with underground river solution cavity, it is characterized in that: the height that described steel casing top exceeds the water surface is 2m~4m.
In the water of above-mentioned bead string type karst area, pier drilled pile construction is processed structure with underground river solution cavity, it is characterized in that: the wall thickness of described steel casing is 10mm, and the wall thickness of described interior casing is 8mm.
In the water of above-mentioned bead string type karst area, pier drilled pile construction is processed structure with underground river solution cavity, it is characterized in that: the internal diameter of described interior casing than a large 20cm in footpath of current first drilled pile of construct and its external diameter than the little 5cm of the internal diameter of steel casing.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and to drop into construction cost lower, can effectively reduce every input costs such as labour cost, cost of materials, machinery expense.
2, fast and construction period of construction speed can be guaranteed, easy construction, and construction quality is easy to guarantee, and work progress safety, reliable.
3, realize convenient and treatment effect is good, processing procedure safety, reliable, adopts short casing to follow up to step embedding rock 1m at the bottom of solution cavity, behind shutoff water source, continues to creep into.
In sum, the utility model reasonable in design, easy construction and treatment effect are good, can be easy, quick, low cost and high-quality complete the underground river solution cavity processing procedure in bored pile construction process in karst region process.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is Construction State schematic diagram of the present utility model.
Description of reference numerals:
1-underground river; 2-steel casing; 3-interior casing;
4-underground river solution cavity; 5-lower solution cavity; 6-boring;
7-plugged zone.
The specific embodiment
In a kind of bead string type karst area water as shown in Figure 1, pier drilled pile construction is processed structure with underground river solution cavity, a underground river solution cavity 4 and a lower solution cavity 5 that is positioned at underground river solution cavity 4 belows are passed through in institute's construction drill stake from top to bottom, described underground river solution cavity 4 has the solution cavity on underground river 1 for bottom, comprise the steel casing 2 of burying underground before drilling construction on institute's construction drill stake stake position, from top to bottom creep into pass through after underground river solution cavity 4 boring 6 transfer to the interior casing 3 on 1 riverbed, underground river and internally casing 3 bottoms carry out the plugged zone 7 forming after slip casting shutoff, and before slip casting shutoff, there is the bed course that one deck is comprised of the rock particles after being smashed by rig described interior casing 3 bottoms.The length of described steel casing 2 is greater than the depth of water of current institute's construction drill stake present position, and described steel casing 2 is outer casing, and the internal diameter of described interior casing 3 is greater than the stake footpath of institute's construction drill stake and the internal diameter that its external diameter is less than described outer casing.On the riverbed on described underground river 1, be provided with the installing hole of installing for interior casing 3.
In the present embodiment, the hole depth of described installing hole is 1m left and right.Described bed course contains clay.
During practice of construction, can according to specific needs, the hole depth of described installing hole be adjusted accordingly.
Actually add man-hour, described interior casing 3 is formed by a plurality of interior casing section assemblings.Between neighbouring two described interior casing sections, with welding manner, be fixed connection.
After installation, the top height of described interior casing 3 is not less than the top height of described outer casing, and interior casing 3 is coaxial laying with described outer casing.
In the present embodiment, the height that described steel casing 2 tops exceed the water surface is 2m~4m.
In the present embodiment, the wall thickness of described steel casing 2 is 10mm, and the wall thickness of described interior casing 3 is 8mm.The internal diameter of described interior casing 3 than the stake large 20cm in footpath and its external diameter of current first drilled pile of constructing than the little 5cm of the internal diameter of steel casing 2.
Actually add man-hour, can according to specific needs, the length of steel casing 2, interior casing 3 be adjusted accordingly with the internal diameter of steel casing 2 with wall thickness and the interior casing 3 of steel casing 2.
During practice of construction, because the basal bed of underground river solution cavity 4 has lower solution cavity 5 below, therefore determine and adopt short casing follow-up construction, shutoff water source after 3 follow-ups of interior casing are dark to embedding rock 1m at the bottom of hole, the follow-up of termination casing, prevent that river crossfire from bringing very big inconvenience to construction to the lower solution cavity 5 of lower floor, adopts energy exchange method to continue to creep into afterwards.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solutions of the utility model.

Claims (8)

1. in a bead string type karst area water, pier drilled pile construction is processed structure with underground river solution cavity, a underground river solution cavity (4) and a lower solution cavity (5) that is positioned at underground river solution cavity (4) below are passed through in institute's construction drill stake from top to bottom, it is characterized in that: comprise the steel casing (2) of burying underground before drilling construction on institute's construction drill stake stake position, from top to bottom creep into after underground river solution cavity (4) by institute hole (6) transfer to the plugged zone (7) that carries out bottom the interior casing (3) on riverbed, underground river (1) and internal casing (3) forming after slip casting shutoff, and before slip casting shutoff, there is the bed course that one deck is comprised of the rock particles after being smashed by rig described interior casing (3) bottom, the length of described steel casing (2) is greater than the depth of water of current institute's construction drill stake present position, and described steel casing (2) is outer casing, and the internal diameter of described interior casing (3) is greater than the stake footpath of institute's construction drill stake and the internal diameter that its external diameter is less than described outer casing, on the riverbed on described underground river (1), be provided with the installing hole of installing for interior casing (3).
2. according to pier drilled pile construction in the water of bead string type claimed in claim 1 karst area, with underground river solution cavity, process structure, it is characterized in that: the hole depth of described installing hole is 1m left and right.
3. according to pier drilled pile construction in the bead string type karst area water described in claim 1 or 2, with underground river solution cavity, process structure, it is characterized in that: described interior casing (3) is formed by a plurality of interior casing section assemblings.
4. according to pier drilled pile construction in the water of bead string type claimed in claim 3 karst area, with underground river solution cavity, process structure, it is characterized in that: between neighbouring two described interior casing sections, with welding manner, be fixed connection.
5. according to pier drilled pile construction in the bead string type karst area water described in claim 1 or 2, with underground river solution cavity, process structure, it is characterized in that: the top height of described interior casing (3) is not less than the top height of described outer casing, and interior casing (3) is coaxial laying with described outer casing.
6. according to pier drilled pile construction in the bead string type karst area water described in claim 1 or 2, with underground river solution cavity, process structure, it is characterized in that: the height that described steel casing (2) top exceeds the water surface is 2m~4m.
7. according to pier drilled pile construction in the bead string type karst area water described in claim 1 or 2, with underground river solution cavity, process structure, it is characterized in that: the wall thickness of described steel casing (2) is 10mm, the wall thickness of described interior casing (3) is 8mm.
8. according to pier drilled pile construction in the bead string type karst area water described in claim 1 or 2, with underground river solution cavity, process structure, it is characterized in that: the internal diameter of described interior casing (3) than a large 20cm in footpath of current first drilled pile of construct and its external diameter than the little 5cm of internal diameter of steel casing (2).
CN201320621965.3U 2013-09-30 2013-09-30 Underground river karst cave treatment structure for underwater pier drilled pile construction in beaded type karst area Expired - Fee Related CN203487528U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106320354A (en) * 2016-08-23 2017-01-11 中国水利水电第八工程局有限公司 Anti-seepage construction method for karst cave development stratum under overburden
CN106837411A (en) * 2017-02-04 2017-06-13 长江勘测规划设计研究有限责任公司 The arrangement and method of a kind of buried shield tunnel filling and injecting slurry
CN108194131A (en) * 2017-12-12 2018-06-22 中建市政工程有限公司 The recyclable static pressure grouting system of river bottom solution cavity material-saving closing and construction method
CN108411928A (en) * 2018-03-22 2018-08-17 中建桥梁有限公司 One kind passing through multilayer karst cave ultra-deep and large diameter pile foundation boring method
CN109183831A (en) * 2018-08-30 2019-01-11 广东省建筑设计研究院 Become the multistage load stake of stake diameter string hole and its construction method
CN111395059A (en) * 2020-03-23 2020-07-10 中铁二院工程集团有限责任公司 Light roadbed structure crossing karez, design and construction method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106320354A (en) * 2016-08-23 2017-01-11 中国水利水电第八工程局有限公司 Anti-seepage construction method for karst cave development stratum under overburden
CN106320354B (en) * 2016-08-23 2018-11-30 中国水利水电第八工程局有限公司 The Seepage method on solution cavity development stratum under coating
CN106837411A (en) * 2017-02-04 2017-06-13 长江勘测规划设计研究有限责任公司 The arrangement and method of a kind of buried shield tunnel filling and injecting slurry
CN106837411B (en) * 2017-02-04 2020-04-03 长江勘测规划设计研究有限责任公司 Arrangement structure and method for filling and grouting of deep-buried shield tunnel
CN108194131A (en) * 2017-12-12 2018-06-22 中建市政工程有限公司 The recyclable static pressure grouting system of river bottom solution cavity material-saving closing and construction method
CN108194131B (en) * 2017-12-12 2019-04-19 中建市政工程有限公司 River bottom solution cavity material-saving closes recyclable static pressure grouting system and construction method
CN108411928A (en) * 2018-03-22 2018-08-17 中建桥梁有限公司 One kind passing through multilayer karst cave ultra-deep and large diameter pile foundation boring method
CN109183831A (en) * 2018-08-30 2019-01-11 广东省建筑设计研究院 Become the multistage load stake of stake diameter string hole and its construction method
CN111395059A (en) * 2020-03-23 2020-07-10 中铁二院工程集团有限责任公司 Light roadbed structure crossing karez, design and construction method

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Granted publication date: 20140319

Termination date: 20160930