CN110924413A - River-damming-resistant well group and construction method thereof - Google Patents
River-damming-resistant well group and construction method thereof Download PDFInfo
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- CN110924413A CN110924413A CN201911258964.5A CN201911258964A CN110924413A CN 110924413 A CN110924413 A CN 110924413A CN 201911258964 A CN201911258964 A CN 201911258964A CN 110924413 A CN110924413 A CN 110924413A
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- open caisson
- river
- sinking
- caisson
- group
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000004567 concrete Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 10
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 206010016825 Flushing Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/16—Fixed weirs; Superstructures or flash-boards therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
Abstract
The invention discloses a river-blocking weir gate anti-impact sinking well group, which relates to the field of water conservancy infrastructure and can effectively solve the overall problem of the sinking well group and the problem of uniform sinking in the construction process, and the specific scheme is as follows: the open caisson structure comprises a plurality of open caisson groups, wherein the open caisson groups are arranged along the width direction of a river channel on a river bed, the outer walls of two sides, close to adjacent open caisson, of the open caisson are respectively provided with grooves with arc-shaped cross sections, and the adjacent arc-shaped grooves of the adjacent open caisson are connected through concrete. The river blocking weir gate anti-impact open caisson group can effectively solve the overall problem of the open caisson group and the problem of uniform sinking in the construction process; the river-blocking weir gate anti-flushable well group can effectively solve the problem of sand loss of a weir gate foundation; the flushdown-resistant well group of the river weir gate can serve as a foundation to serve the upper structure of the river weir gate; the river damming resistant well group has good application effect and high economical efficiency.
Description
Technical Field
The invention relates to the field of water conservancy infrastructure, in particular to a river-damming-resistant sinking well group and a construction method thereof.
Background
The open caisson is a well cylindrical structure, and is a foundation for bridge abutment or other structures by digging soil in the well, overcoming the frictional resistance of the well wall by means of the self gravity, sinking to a designed elevation, sealing the bottom by concrete and filling the well hole.
The general open caisson often appears in single quantity in a small range, the condition that a plurality of open caisson appear is relatively less, and under the condition that a plurality of open caisson are used, the interconnection among the open caisson needs to be considered, the adjacent open caisson is too close to cause influence on the adjacent open caisson, and the distance is too far, so that the effect of the open caisson group cannot be achieved.
Disclosure of Invention
In order to solve the technical problems, the invention provides a river-blocking weir gate anti-impact sinking well group and a construction method thereof, and the overall problem of the sinking well group and the problem of uniform sinking in the construction process can be effectively solved through the connection design between the sinking wells.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a river-blocking weir gate anti-impact sinking well crowd, includes a plurality of open caisson, and the open caisson crowd sets up on the river course width direction on the riverbed, is provided with the cross section respectively on the both sides outer wall that the open caisson is close to adjacent open caisson and is the curved recess, and adjacent curved recess of adjacent open caisson passes through the concrete and connects.
By adopting the technical scheme, the open caisson groups are arranged along the width direction of the riverbed, the number of the open caisson is set according to the width of the riverbed and the size of a single open caisson, the outer side wall of each open caisson is provided with an arc-shaped groove which is arranged along the height direction of the open caisson, and a certain gap is left between each open caisson and the adjacent open caisson, so that the two adjacent grooves can not be closed temporarily; after the open caisson sinks to accomplish, can use high-pressure water and inhale the clear hole of sand pump with two adjacent recesses, then pour the concrete in the recess under water for adjacent open caisson interconnect, finally a plurality of open caisson forms a whole, makes whole open caisson crowd more firm.
As a preferable scheme, the open caisson comprises an open caisson main body poured by reinforced concrete, a concrete back cover is poured at the joint of the open caisson main body and a riverbed rock stratum, a main body cavity with fillers and a cover plate poured by the reinforced concrete.
By adopting the technical scheme, the main structure of the open caisson is a hollow box type structure, the lower end of the open caisson penetrates through sand gravel, the bottom of the open caisson is arranged on the top surface of a foundation stratum, after concrete bottom sealing is well arranged, the main cavity is filled, the main cavity can be filled with river bed sand gravel, and then the reinforced concrete cover plate is poured on the top surface of the open caisson.
As a preferred scheme, the cross section of the open caisson is rectangular; the rectangular structure is better to the effect as basis and connection, and the manual construction of being convenient for.
As a preferred scheme, the width direction of the rectangular open caisson is consistent with the water flow direction, the width is 3.3-3.8m, and the length of the open caisson is 9.5-10.5 m; the open caisson with the size is convenient to construct, and the depth of the open caisson is selected according to the actual condition of the riverbed covering layer.
As a preferred scheme, the gap between adjacent open caisson is 0.1-0.2 m; the open caisson has certain relation, the supporting effect between the adjacent open caisson is ensured, and the interception effect of preventing the sand loss on the basis of the weir gate is better.
As a preferred scheme, the height difference of any two open caisson in the open caisson group is not more than 0.5 m; in order to increase the stability between the open caisson, also be convenient for the later stage utilize the open caisson crowd as infrastructure, add on the open caisson crowd and establish other facilities, prevent that the process of sinking slope from leading to adjacent open caisson can't sink.
As a preferred scheme, the concrete connecting the adjacent arc-shaped grooves of the adjacent open caisson is second-stage concrete; so that the construction effect is better.
A connecting structure of an open caisson group and a flat protection plate comprises the river blocking weir gate anti-impact open caisson group, the joint of the flat protection plate and an open caisson cover plate is a slope flat joint, and a steel bar pull rod is arranged between the joints.
On the basis of the connecting structure, a stilling basin and a long sea can be omitted, and the riverbed can be protected from the scouring and other erosion damages of river water flowing through an upstream water outlet structure; all cover plates of the open caisson group can be used as flat protection plates and are arranged at the downstream of the water outlet building, and inclined flat protection plates are arranged between the water outlet building and the open caisson group.
A construction method of a river weir gate anti-flushable well group is based on the river weir gate anti-flushable well group and comprises the following steps:
s1: numbering the sinking well groups from one end to the other end sequentially by 1, 2, 3, 4, 5 and 6;
s2: synchronously sinking the open caisson numbered as singular or even in S1 for 0.5 m;
s3: synchronously sinking the sunk wells with the residual numbers of even numbers or odd numbers after sinking in the S2 by 0.5 m;
s4: synchronously sinking the single or double open caisson numbered in the S1 for 0.5 m;
s5: and synchronously sinking the sunk wells which are left in the sinking in the S2 and are numbered as even numbers or odd numbers by 0.5 m.
As a preferred scheme, sectional pouring and sectional sinking are adopted in the single open caisson sinking process.
By adopting the technical scheme, according to the specific width of a riverbed, the open caisson with different quantities is selectively arranged, an excavator is matched with a sand suction pump to carry out non-drainage excavation and sinking, the theodolite is utilized to detect plane deviation on two sides, the level is utilized to detect vertical height on upstream and downstream, adjacent open caisson are sunk at intervals, and a construction mode of sectional pouring and sectional sinking is adopted for a single open caisson.
In conclusion, the invention has the following beneficial effects:
(1) the river blocking weir gate anti-impact open caisson group can effectively solve the overall problem of the open caisson group and the problem of uniform sinking in the construction process;
(2) the river-blocking weir gate anti-washout well group provided by the invention can effectively solve the problem of sand loss of a weir gate foundation;
(3) the anti-flushings well group of the river weir gate can serve as a foundation to serve the upper structure of the river weir gate;
(4) the river-damming-resistant well group provided by the invention has a good application effect and high economical efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a barrage anti-flunking well group of an embodiment of the invention;
fig. 2 is a schematic view of different structures of a barrage anti-flunking well group according to an embodiment of the invention;
fig. 3 is an application scenario diagram of the barrage anti-flunking well group according to the embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
the utility model provides a river-blocking weir gate anti-impact sinking well crowd, includes a plurality of open caisson, and the open caisson crowd sets up on the river course width direction on the riverbed, is provided with the cross section respectively on the both sides outer wall that the open caisson is close to adjacent open caisson and is the curved recess, and adjacent curved recess of adjacent open caisson passes through the concrete and connects.
By adopting the technical scheme, the open caisson groups are arranged along the width direction of the riverbed, the number of the open caisson is set according to the width of the riverbed and the size of a single open caisson, the outer side wall of each open caisson is provided with an arc-shaped groove which is arranged along the height direction of the open caisson, and a certain gap is left between each open caisson and the adjacent open caisson, so that the two adjacent grooves can not be closed temporarily; after the open caisson sinks to accomplish, can use high-pressure water and inhale the clear hole of sand pump with two adjacent recesses, then pour the concrete in the recess under water for adjacent open caisson interconnect, finally a plurality of open caisson forms a whole, makes whole open caisson crowd more firm.
As a preferable scheme, the open caisson comprises an open caisson main body poured by reinforced concrete, a concrete back cover is poured at the joint of the open caisson main body and a riverbed rock stratum, a main body cavity with fillers and a cover plate poured by the reinforced concrete.
By adopting the technical scheme, the main structure of the open caisson is a hollow box type structure, the lower end of the open caisson penetrates through sand gravel, the bottom of the open caisson is arranged on the top surface of a foundation stratum, after concrete bottom sealing is well arranged, the main cavity is filled, the main cavity can be filled with river bed sand gravel, and then the reinforced concrete cover plate is poured on the top surface of the open caisson.
As a preferred scheme, the cross section of the open caisson is rectangular; the rectangular structure is better to the effect as basis and connection, and the manual construction of being convenient for.
As a preferred scheme, the width direction of the rectangular open caisson is consistent with the water flow direction, the width is 3.3-3.8m, and the length of the open caisson is 9.5-10.5 m; the open caisson with the size is convenient to construct, and the depth of the open caisson is selected according to the actual condition of the riverbed covering layer.
As a preferred scheme, the gap between adjacent open caisson is 0.1-0.2 m; the open caisson has certain relation, the supporting effect between the adjacent open caisson is ensured, and the interception effect of preventing the sand loss on the basis of the weir gate is better.
As a preferred scheme, the height difference of any two open caisson in the open caisson group is not more than 0.5 m; in order to increase the stability between the open caisson, also be convenient for the later stage utilize the open caisson crowd as infrastructure, add on the open caisson crowd and establish other facilities, prevent that the process of sinking slope from leading to adjacent open caisson can't sink.
As a preferred scheme, the concrete connecting the adjacent arc-shaped grooves of the adjacent open caisson is second-stage concrete; so that the construction effect is better.
Example 2:
a connecting structure of an open caisson group and a flat protection plate comprises the river blocking weir gate anti-impact open caisson group, the joint of the flat protection plate and an open caisson cover plate is a slope flat joint, and a steel bar pull rod is arranged between the joints.
On the basis of the connecting structure, a stilling basin and a long sea can be omitted, and the riverbed can be protected from the scouring and other erosion damages of river water flowing through an upstream water outlet structure; all cover plates of the open caisson group can be used as flat protection plates and are arranged at the downstream of the water outlet building, and inclined flat protection plates are arranged between the water outlet building and the open caisson group.
Example 3:
a construction method of a river weir gate anti-flushable well group is based on the river weir gate anti-flushable well group and comprises the following steps:
s1: numbering the sinking well groups from one end to the other end sequentially by 1, 2, 3, 4, 5 and 6;
s2: synchronously sinking the open caisson numbered as singular or even in S1 for 0.5 m;
s3: synchronously sinking the sunk wells with the residual numbers of even numbers or odd numbers after sinking in the S2 by 0.5 m;
s4: synchronously sinking the single or double open caisson numbered in the S1 for 0.5 m;
s5: and synchronously sinking the sunk wells which are left in the sinking in the S2 and are numbered as even numbers or odd numbers by 0.5 m.
As a preferred scheme, sectional pouring and sectional sinking are adopted in the single open caisson sinking process.
By adopting the technical scheme, according to the specific width of a riverbed, the open caisson with different quantities is selectively arranged, an excavator is matched with a sand suction pump to carry out non-drainage excavation and sinking, the theodolite is utilized to detect plane deviation on two sides, the level is utilized to detect vertical height on upstream and downstream, adjacent open caisson are sunk at intervals, and a construction mode of sectional pouring and sectional sinking is adopted for a single open caisson.
The working principle is as follows: taking a large sand river double-peak river barrage in the city of buried mountains in Anhui province as an example, the double-peak river barrage is positioned at the mountain outlet of a large sand river, two banks have no dike, the width of a river bed is 200m, and a river bed covering layer is sand gravel and is about 6-9 m thick; in the work progress, the open caisson is adopted long arm excavator cooperation sand suction pump not drainage and is excavated the soil and sink, utilizes the theodolite to detect the plane deviation at both sides, utilizes the spirit level to detect vertical height in the upstream, and adjacent open caisson is from rising each other and is laid down, the interval sinks, and the altitude difference control is at 0.5m, final effect: as the open caisson group is used as a deep foundation and a strong defense line of the apron, the large sand river double-peak river barrage project runs for ten years, and is safe and innoxious after repeated mountain torrents test.
Description of the drawings: in FIG. 2, the elevation, peg number in meters, and remaining dimensions in millimeters are shown.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a river-blocking weir gate anti-impact sinking well crowd, its characterized in that, includes a plurality of open caisson, and the open caisson crowd sets up on the river course width direction on the riverbed, is provided with the cross section respectively on the both sides outer wall that the open caisson is close to adjacent open caisson and is the curved recess, and adjacent curved recess of adjacent open caisson passes through the concrete and connects.
2. The river barrier sluice anti-surge well group as recited in claim 1, wherein the caisson comprises a main body of reinforced concrete poured caisson, a concrete back cover poured at the junction of the main body of caisson and the bed rock layer, a main body cavity with filler and a cover plate poured of reinforced concrete.
3. The barrage anti-surge well group of claim 2, wherein the open caisson cross section is rectangular.
4. The river damming resistant sinking well group according to claim 3, wherein the width direction of the rectangular sinking well is consistent with the water flow direction, the width is 3.3-3.8m, and the length of the sinking well is 9.5-10.5 m.
5. The barrage anti-surge well group according to claim 1, wherein the adjacent caisson gap is 0.1-0.2 m.
6. The barrage anti-surge well group of claim 1, wherein the difference in height between any two open caisson in the well group is no more than 0.5 m.
7. The barrage flunkage resistant caisson group of claim 1, wherein the concrete connecting adjacent curved recesses of adjacent caisson is secondary concrete.
8. A connection structure of an open caisson group and a flat protection plate comprises the river damming resistant open caisson group of any one of claims 1 to 7, and is characterized in that a joint between the flat protection plate and an open caisson cover plate is a slope flat joint, and a steel bar pull rod is arranged between the joints.
9. A construction method of a river/weir gate anti-flushable well group is based on any one of claims 1 to 7, and is characterized by comprising the following steps:
s1: numbering the sinking well groups from one end to the other end sequentially by 1, 2, 3, 4, 5 and 6;
s2: synchronously sinking the open caisson numbered as singular or even in S1 for 0.5 m;
s3: synchronously sinking the sunk wells with the residual numbers of even numbers or odd numbers after sinking in the S2 by 0.5 m;
s4: synchronously sinking the single or double open caisson numbered in the S1 for 0.5 m;
s5: and synchronously sinking the sunk wells which are left in the sinking in the S2 and are numbered as even numbers or odd numbers by 0.5 m.
10. The method of claim 9, wherein the individual sinking wells are cast in sections and sunk in sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258964.5A CN110924413A (en) | 2019-12-10 | 2019-12-10 | River-damming-resistant well group and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258964.5A CN110924413A (en) | 2019-12-10 | 2019-12-10 | River-damming-resistant well group and construction method thereof |
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| CN110924413A true CN110924413A (en) | 2020-03-27 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR741857A (en) * | 1933-02-22 | |||
| CN101003974A (en) * | 2006-12-22 | 2007-07-25 | 中铁大桥局股份有限公司 | Method for constructing groundwork for large-scale sinking well in deep water |
| CN101560773A (en) * | 2009-05-08 | 2009-10-21 | 中国水电顾问集团中南勘测设计研究院 | Water-retaining cofferdam mode used in case of difficult implementation of heavy excavation method |
| CN201883413U (en) * | 2010-12-23 | 2011-06-29 | 中国建筑第二工程局有限公司 | Combined concrete rectangular open caisson harbor basin |
| CN106759426A (en) * | 2016-12-30 | 2017-05-31 | 中交第二航务工程局有限公司 | Soft layer well sinking control method and device |
| CN108331000A (en) * | 2018-01-09 | 2018-07-27 | 中交烟台环保疏浚有限公司 | Caisson sinking construction method |
| CN108824505A (en) * | 2018-07-11 | 2018-11-16 | 上海市政建设有限公司 | A kind of short distance open caisson group's sinking construction method |
| CN110093971A (en) * | 2019-04-26 | 2019-08-06 | 中铁第四勘察设计院集团有限公司 | The Combined water pump house and its construction method of subterranean tunnel |
| CN212200477U (en) * | 2019-12-10 | 2020-12-22 | 安庆市水利水电规划设计院 | River-blocking weir gate anti-impact sinking well group and connecting structure comprising same |
-
2019
- 2019-12-10 CN CN201911258964.5A patent/CN110924413A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR741857A (en) * | 1933-02-22 | |||
| CN101003974A (en) * | 2006-12-22 | 2007-07-25 | 中铁大桥局股份有限公司 | Method for constructing groundwork for large-scale sinking well in deep water |
| CN101560773A (en) * | 2009-05-08 | 2009-10-21 | 中国水电顾问集团中南勘测设计研究院 | Water-retaining cofferdam mode used in case of difficult implementation of heavy excavation method |
| CN201883413U (en) * | 2010-12-23 | 2011-06-29 | 中国建筑第二工程局有限公司 | Combined concrete rectangular open caisson harbor basin |
| CN106759426A (en) * | 2016-12-30 | 2017-05-31 | 中交第二航务工程局有限公司 | Soft layer well sinking control method and device |
| CN108331000A (en) * | 2018-01-09 | 2018-07-27 | 中交烟台环保疏浚有限公司 | Caisson sinking construction method |
| CN108824505A (en) * | 2018-07-11 | 2018-11-16 | 上海市政建设有限公司 | A kind of short distance open caisson group's sinking construction method |
| CN110093971A (en) * | 2019-04-26 | 2019-08-06 | 中铁第四勘察设计院集团有限公司 | The Combined water pump house and its construction method of subterranean tunnel |
| CN212200477U (en) * | 2019-12-10 | 2020-12-22 | 安庆市水利水电规划设计院 | River-blocking weir gate anti-impact sinking well group and connecting structure comprising same |
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