CN110541397A - Underwater construction method suitable for non-outage repair of large-scale water delivery channel - Google Patents
Underwater construction method suitable for non-outage repair of large-scale water delivery channel Download PDFInfo
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- CN110541397A CN110541397A CN201910883444.7A CN201910883444A CN110541397A CN 110541397 A CN110541397 A CN 110541397A CN 201910883444 A CN201910883444 A CN 201910883444A CN 110541397 A CN110541397 A CN 110541397A
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- underwater
- excavation
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- repair
- truss
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/50—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with buckets or other digging elements moved along a rigid guideway
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/58—Component parts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an underwater construction method suitable for non-water-cut-off repair of a large-scale water delivery channel, which comprises the following steps of firstly, setting an underwater steel enclosure to enclose a repair area to form a still water area, balancing the internal and external water pressures of the steel enclosure, and keeping the water flow static; secondly, excavating an underwater soil body: in the still water area enclosed by the steel enclosure, using an underwater excavation device to excavate a repair area from bottom to top in a layered mode along a channel slope; after the excavation of one repairing station is finished, moving the underwater excavation device to another repairing station for excavation until all the repairing areas are excavated; and thirdly, pouring water lower mold bag concrete or/and underwater non-dispersed concrete in the excavated repair area to finish underwater repair. The invention adopts the fabricated steel enclosure to form the still water area, thereby reducing the difficulty of underwater construction and avoiding the pollution of the underwater construction to the water quality of the channel. The underwater excavation mechanical device greatly improves the efficiency and the precision of underwater soil excavation and reduces the underwater soil excavation difficulty.
Description
Technical Field
The invention relates to a method for repairing a water delivery channel without stopping water, in particular to an underwater construction method suitable for repairing a large-scale water delivery channel without stopping water.
Background
At present, a direct maintenance mode can be adopted for the water engineering damage part of a water delivery channel, a water stopping repair method is generally adopted for underwater engineering damage repair, the water stopping mode can adopt two modes of water stopping of the whole channel or water stopping of a cofferdam, dry land construction can be realized after water stopping, the construction speed is high, the efficiency is high, and the construction quality is easy to guarantee. However, the time consumption for the whole-section water supply interruption maintenance of the channel is long, the water delivery capacity of the channel is seriously influenced, the benefit of the water delivery channel cannot be fully exerted, and the social influence of the whole-section water supply interruption is great for the area with a single local water source.
Form local still water district through setting up large-scale cofferdam, realize that local cutting off water carries out the restoration under water, but the not enough of existence at present is: 1. the traditional cofferdam has a complex structure and high investment and is difficult to implement. 2. Excavation precision is difficult to control under water, and in order to guarantee excavation precision, need the diver to wait that excavation under water stops and go on diving again after the quality of water is clarified and look over, confirms the excavation condition, excavates inefficiency. 3. When underwater excavation is carried out, the excavation of the hardened soil body under water needs to be carried out by combining a high-pressure water gun and a hinged suction type dredge pump; for the consolidated clay which cannot be stirred by the hinge suction type dredge pump, 35MPa high-pressure water is adopted to disperse the clay, and then the dredge pump is used for cleaning, so that the construction difficulty is high; for the excavation of pebble soil bodies with larger pebble particle diameters, the hinge suction type dredge pump is not suitable, and only long-arm back-shovel excavating equipment is adopted for underwater excavation; however, the long-arm backhoe excavating equipment needs to be provided with a platform on a land base, but the effective excavating distance and the self weight of the long-arm backhoe are large, so that the application range of the long-arm backhoe excavating equipment is restricted.
Disclosure of Invention
The invention aims to provide an underwater construction method suitable for non-stop repair of a large water delivery channel, which can improve the excavation boundary precision and the excavation depth precision of an underwater soil body and improve the excavation efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
The invention relates to an underwater construction method suitable for non-water-stop repair of a large-scale water delivery channel, which is carried out according to the following steps:
Step one, arranging an underwater steel enclosure to enclose a repair area to form a still water area, so that the internal and external hydraulic pressures of the steel enclosure are balanced, and the water flow is static;
Secondly, excavating an underwater soil body: in the still water area enclosed by the steel enclosure, using an underwater excavation device to excavate the repair area from bottom to top in a layered manner along a channel slope; after the excavation of one repairing station is finished, moving the underwater excavation device to another repairing station for excavation until all the repairing areas are excavated;
And thirdly, pouring water lower mold bag concrete or/and underwater non-dispersed concrete in the excavated repair area to finish underwater repair.
the steel enclosure is formed by connecting a plurality of unit enclosures with the same structure through bolts; the unit enclosure comprises a base, the base is composed of three longitudinal supports and a plurality of transverse supports welded to the three longitudinal supports at intervals, and rubber cushion pads are mounted on the lower surfaces of the longitudinal supports and the transverse supports; the cross part of each transverse support and the longitudinal support positioned in the middle position is upwards fixedly connected with an inserting groove, and a flow baffle plate is inserted between the two inserting grooves with opposite notches; the two sides of each slot are respectively provided with an inclined strut, the upper end of each inclined strut is connected with the upper part of the corresponding slot, and the lower end of each inclined strut is connected with the transverse strut positioned at the middle position and corresponding to the two sides of the longitudinal strut.
The underwater excavation mechanical device comprises a door-type steel truss, wherein the door-type steel truss consists of two vertical trusses which are arranged at intervals along the axial direction of a channel and a top truss which is fixedly connected between the two vertical trusses; the two vertical trusses are respectively and symmetrically provided with a track parallel to the channel slope, a truss girder is arranged between the two vertical trusses, and two ends of the truss girder are respectively in rolling fit with one corresponding track through rollers; a plurality of groups of supporting hydraulic cylinders are respectively and vertically arranged at the lower parts of the two ends of the two vertical trusses, and the lower end of a piston rod of each group of supporting hydraulic cylinders is provided with a universal traveling wheel; at least one group of excavation components are arranged below the truss girder, and each group of excavation components are connected with a chain wheel or a winding drum which is arranged on the bank of the canal and driven by power through a chain or a steel wire rope; the excavation subassembly comprises drum-type excavation cutter and collecting hopper, the drum-type excavation cutter with the collecting hopper is articulated mutually with the truss roof beam through a set of pneumatic cylinder.
The top truss is composed of a horizontal section and a slope section which inclines downwards along the channel slope, and a buoyancy tank is arranged on the slope section top truss.
And auxiliary supporting trusses are arranged on the outer sides of two ends of the two vertical trusses.
Compared with the prior art, the invention has the following advantages
1. The channel is repaired in water without stopping water supply, the water delivery capacity of the channel is basically not influenced, and the benefit of the water delivery channel is fully exerted.
2. The fabricated steel enclosure is adopted to form a still water area, so that the underwater construction difficulty is reduced, and the pollution of underwater construction to the water quality of a channel is avoided.
3. By adopting the underwater excavation mechanical device, the efficiency and the precision of underwater soil excavation are greatly improved, and the underwater soil excavation difficulty is reduced.
4. Adopt the steel to enclose fender, excavate mechanical device under water, most combination work can go on ashore, and the installation effectiveness is high, but reuse, and economic benefits is higher.
drawings
FIG. 1 is a schematic structural view of a repaired section of a water delivery channel according to the present invention.
Fig. 2 is a schematic structural view of the unit enclosure of the present invention.
fig. 3 is a schematic structural diagram of the underwater excavation mechanical device of the present invention (in the figure, a broken line is a hydraulic pipeline, and a two-dot chain line is a chain).
Fig. 4 is an enlarged view of the section I-I of fig. 3.
Fig. 5 is a schematic view of a cross-sectional structure taken along line a-a of fig. 3.
Detailed Description
the following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1-5, the underwater construction method suitable for non-water-stop repair of a large water delivery channel of the invention is carried out according to the following steps:
Step one, arranging an underwater steel enclosure to enclose a repair area to form a still water area, so that the internal and external hydraulic pressures of the steel enclosure are balanced, and the water flow is static; the steel enclosure is formed by connecting a plurality of unit enclosures with the same structure through bolts; the unit enclosure comprises a base, the base is composed of three longitudinal supports 1.1, 1.2 and 1.3 and four transverse supports 2.1, 2.2, 2.3 and 2.4 which are welded on the three longitudinal supports 1.1, 1.2 and 1.3 at intervals, and the lower surfaces of the longitudinal supports and the transverse supports are respectively provided with a rubber buffer pad; slots 3 are fixedly connected upwards at the intersection of each transverse strut and the longitudinal strut 1.2 positioned in the middle, and flow baffles 4 are inserted between the two slots 3 with opposite notches; the two sides of each slot 3 are respectively provided with an inclined strut 5.1 and an inclined strut 5.2, the upper ends of the inclined struts 5.1 and the inclined struts 5.2 are connected with the upper parts of the corresponding slots 3, and the lower ends of the inclined struts 5.1 and the inclined struts 5.2 are connected with the transverse struts corresponding to the two sides of the longitudinal strut 1.2 positioned in the middle position. The adjacent slots 3 are connected with tie bars 6.1 and 6.2 through bolts so as to improve the strength of the unit enclosure, and the tie bars 6.1 and 6.2 are selected from angle steel to be more beneficial to quick installation and disassembly.
after the unit enclosure is assembled on the ground, the unit enclosure is transferred to a repair area one by a hoisting machine, and adjacent unit enclosures are connected into a whole through bolts and fixed; after the enclosure of the repair area unit is installed, hoisting the baffle plate 4 to the slot 3 in a partitioning manner along the slot 3 by a hoisting machine, and completing installation of the baffle plate 4; and then, placing a gravel bag on the base underwater, placing three layers, and finishing the enclosure of the repair area.
Secondly, excavating an underwater soil body: and in a still water area enclosed by the steel enclosure, using an underwater excavation device to excavate and repair the area from bottom to top in a layered mode along a channel slope.
The underwater excavation mechanical device comprises a door type steel truss arranged in a repair area, wherein the door type steel truss is composed of two vertical trusses 7.1 and 7.2 which are arranged at intervals along the axial direction of a channel and a top truss which is fixedly connected between the two vertical trusses 7.1 and 7.2. The outer sides of two ends of the two vertical trusses 7.1 and 7.2 are provided with auxiliary supporting trusses 8.1 and 8.2, the top truss is composed of a horizontal section 9.1 and a slope section 9.2 which is inclined downwards along a channel slope 10, and a buoyancy tank 11 is arranged on the top truss of the slope section 9.2. One end of the two vertical trusses 7.1, 7.2 is located at the trench bottom 12 and the other end is located on the trench shore 13.
Rails 14 and 15 parallel to the channel slope are symmetrically arranged on the two vertical trusses 7.1 and 7.2 respectively, a truss girder 16 is arranged between the two vertical trusses 7.1 and 7.2, and two ends of the truss girder 16 are in rolling fit with one corresponding rail through rollers 17 respectively; a plurality of groups of supporting hydraulic cylinders 18.1 and 18.2 are respectively and vertically arranged at the lower parts of the two ends of the two vertical trusses 7.1 and 7.2, and universal traveling wheels 19 are respectively arranged at the lower ends of piston rods of each group of supporting hydraulic cylinders 18.1 and 18.2; two groups of excavation components are arranged below the truss girder 16, and each group of excavation components is connected with a chain wheel 21 which is arranged on the channel bank 13 and driven by power through a chain 20; the excavation component consists of a drum-type excavation tool 22 and a collecting hopper 23, and the drum-type excavation tool 22 and the collecting hopper 23 are hinged with the truss girder 16 through a group of hydraulic cylinders 24 and 25. The two groups of hydraulic cylinders 24 and 25 are controlled by a third hydraulic pump station 26.3 arranged on the canal shore 13; the bit 27 of the drum-type excavation tool 22 may be selected from a shovel bit, a reamer bit, or a grinding bit.
after the underwater excavation mechanical device is installed in place, the third hydraulic pump station 26.3 controls the excavation position and the excavation depth of the drum-type excavation tool 22 through the hydraulic cylinder 24, and simultaneously controls the height of the aggregate bin 23 through the hydraulic cylinder 25; the hoisting device drives the excavation component and the truss girder 16 to move along the rails 14 and 15 through the chain wheel 21 and the chain 20 for layered excavation.
After the excavation of the channel slope (repair station) in the range of the gate-type steel truss is finished, piston rods of a plurality of groups of supporting hydraulic cylinders 18.1 and 18.2 are controlled to stretch out through a first hydraulic pump station 26.1 and a second hydraulic pump station 26.2, and the gate-type steel truss is moved to the next working surface (repair station) through a universal traveling wheel 19 to be excavated until the whole excavation of the repair area is finished.
and thirdly, pouring underwater bag concrete 28 or/and underwater undispersed concrete 29 in the excavated repair area to complete underwater repair, as shown in fig. 1.
And finishing the underwater construction of the water delivery channel for repairing without stopping water.
Claims (5)
1. An underwater construction method suitable for non-water-stop repair of a large-scale water delivery channel is characterized in that: the method comprises the following steps:
Step one, arranging an underwater steel enclosure to enclose a repair area to form a still water area, so that the internal and external hydraulic pressures of the steel enclosure are balanced, and the water flow is static;
Secondly, excavating an underwater soil body: in the still water area enclosed by the steel enclosure, using an underwater excavation device to excavate the repair area from bottom to top in a layered manner along a channel slope; after the excavation of one repairing station is finished, moving the underwater excavation device to another repairing station for excavation until all the repairing areas are excavated;
And thirdly, pouring underwater mold bag concrete through the underwater base surface in the excavated repairing area to complete the erection, fixation and non-dispersed concrete pouring of the template.
2. the underwater construction method suitable for the non-outage repair of the large-scale water delivery channel according to claim 1, characterized in that: the steel enclosure is formed by connecting a plurality of unit enclosures with the same structure through bolts; the unit enclosure comprises a base, the base is composed of three longitudinal supports and a plurality of transverse supports welded to the three longitudinal supports at intervals, and rubber cushion pads are mounted on the lower surfaces of the longitudinal supports and the transverse supports; the cross part of each transverse support and the longitudinal support positioned in the middle position is upwards fixedly connected with an inserting groove, and a flow baffle plate is inserted between the two inserting grooves with opposite notches; the two sides of each slot are respectively provided with an inclined strut, the upper end of each inclined strut is connected with the upper part of the corresponding slot, and the lower end of each inclined strut is connected with the transverse strut positioned at the middle position and corresponding to the two sides of the longitudinal strut.
3. The underwater construction method suitable for the non-outage repair of the large-scale water delivery channel according to claim 1, characterized in that: the underwater excavation mechanical device comprises a door-type steel truss, wherein the door-type steel truss consists of two vertical trusses which are arranged at intervals along the axial direction of a channel and a top truss which is fixedly connected between the two vertical trusses; the two vertical trusses are respectively and symmetrically provided with a track parallel to the channel slope, a truss girder is arranged between the two vertical trusses, and two ends of the truss girder are respectively in rolling fit with one corresponding track through rollers; a plurality of groups of supporting hydraulic cylinders are respectively and vertically arranged at the lower parts of the two ends of the two vertical trusses, and the lower end of a piston rod of each group of supporting hydraulic cylinders is provided with a universal traveling wheel; at least one group of excavation components are arranged below the truss girder, and each group of excavation components are connected with a chain wheel or a winding drum which is arranged on the bank of the canal and driven by power through a chain or a steel wire rope; the excavation subassembly comprises drum-type excavation cutter and collecting hopper, the drum-type excavation cutter with the collecting hopper is articulated mutually with the truss roof beam through a set of pneumatic cylinder.
4. The underwater soil body positioning excavation device suitable for the non-water-stop repair of the large-scale water delivery channel according to claim 3, wherein: the top truss is composed of a horizontal section and a slope section which inclines downwards along the channel slope, and a buoyancy tank is arranged on the slope section top truss.
5. The underwater soil body positioning excavation device suitable for the non-water-stop repair of the large-scale water delivery channel according to claim 3, wherein: and auxiliary supporting trusses are arranged on the outer sides of two ends of the two vertical trusses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910883444.7A CN110541397B (en) | 2019-09-18 | 2019-09-18 | Underwater construction method suitable for non-outage repair of large-scale water delivery channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910883444.7A CN110541397B (en) | 2019-09-18 | 2019-09-18 | Underwater construction method suitable for non-outage repair of large-scale water delivery channel |
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| CN110541397A true CN110541397A (en) | 2019-12-06 |
| CN110541397B CN110541397B (en) | 2021-06-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456048A (en) * | 2020-04-18 | 2020-07-28 | 中电建十一局工程有限公司 | Underwater operation construction method for channel defect treatment |
| CN111751450A (en) * | 2020-07-31 | 2020-10-09 | 郑州迈控光电科技有限公司 | Underwater slope damage detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456048A (en) * | 2020-04-18 | 2020-07-28 | 中电建十一局工程有限公司 | Underwater operation construction method for channel defect treatment |
| CN111456048B (en) * | 2020-04-18 | 2021-04-20 | 中电建十一局工程有限公司 | Underwater operation construction method for channel defect treatment |
| CN111751450A (en) * | 2020-07-31 | 2020-10-09 | 郑州迈控光电科技有限公司 | Underwater slope damage detection device |
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| CN110541397B (en) | 2021-06-15 |
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Address after: No.58, nanxiange street, Xicheng District, Beijing 100038 Patentee after: China South to North Water Diversion group middle line Co.,Ltd. Patentee after: Henan water exploration and Design Research Co., Ltd. Address before: No.58, nanxiange street, Xicheng District, Beijing 100038 Patentee before: CONSTRUCTION AND ADMINISTRATION BUREAU OF SOUTH-TO-NORTH WATER DIVERSION MIDDLE ROUTE PROJECT Patentee before: Henan water exploration and Design Research Co., Ltd. |
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Effective date of registration: 20220708 Address after: No.58, nanxiange street, Xicheng District, Beijing 100038 Patentee after: China South to North Water Diversion group middle line Co.,Ltd. Patentee after: HENAN WATER & POWER ENGINEERING CONSULTING Co.,Ltd. Patentee after: South to North Water Transfer Middle Route Industrial Development Co.,Ltd. Address before: No.58, nanxiange street, Xicheng District, Beijing 100038 Patentee before: China South to North Water Diversion group middle line Co.,Ltd. Patentee before: Henan water exploration and Design Research Co., Ltd. |