CN113293732A - Construction method for non-stop excavation of riverway in restricted area - Google Patents
Construction method for non-stop excavation of riverway in restricted area Download PDFInfo
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- CN113293732A CN113293732A CN202110559563.4A CN202110559563A CN113293732A CN 113293732 A CN113293732 A CN 113293732A CN 202110559563 A CN202110559563 A CN 202110559563A CN 113293732 A CN113293732 A CN 113293732A
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- river
- drainage
- drainage ditch
- river channel
- excavation
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 48
- 238000010276 construction Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002689 soil Substances 0.000 claims abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention provides a construction method for continuous excavation of a river channel in a restricted area, which comprises the following steps: s1: excavating a drainage ditch along the river direction in the river channel, so that upstream river water in the river channel flows along the drainage ditch; s2: earth excavation is respectively carried out in the riverways on the two sides of the drainage ditch, and soil retaining is reserved on the two side edges of the drainage ditch; s3: and after the river channel parts on the two sides of the drainage groove are excavated, intercepting river water on the upper upstream of the upper end of the drainage groove, and performing earth excavation on the drainage groove. The invention has the beneficial effects that: the drainage ditch is arranged in the river channel for drainage, so that the problem of limited site of arranging the diversion trench outside the river channel is solved, and the construction is not limited by the surrounding environment any more; when the drainage groove drains water, earth excavation construction is carried out on two sides of the drainage groove, so that the river channel excavation efficiency is improved, and the construction period is saved; in addition, the drainage channels are arranged in sections for earth excavation, and the method is suitable for earth excavation of rivers with long length and large river channel depth.
Description
Technical Field
The invention relates to the technical field of river channel excavation, in particular to a construction method for continuous excavation of a river channel in a restricted area.
Background
At present, the domestic river channel needs to be excavated regularly to remove silt and sandy soil in the river channel so as to treat the river channel. According to the construction process of common river channel treatment, a diversion trench is required to be excavated for diversion in upstream river water under most conditions before the excavation of river channel earthwork, so that the river channel earthwork excavation and retaining wall construction are carried out, the conventional diversion trench is additionally excavated outside the construction range of the river channel, the coordination of construction land is difficult, and the construction environment of the river channel is limited; and the later stage of the diversion trench needs to be backfilled by the conventional method, so that the engineering quantity is large, and the construction cost is greatly increased. In other projects, a water collecting well drainage method is adopted to drain along with excavation, water in a river channel is drained to the water collecting well through a drainage ditch, and then the water is pumped out of the river channel and drained, so that the river can be blocked, the water flow in the river channel is large, the water pump is difficult to drain the river water in the water collecting well in time, the water collecting well is damaged by flushing, and excavation construction is influenced.
Disclosure of Invention
In view of this, in order to solve the drainage problem during the river channel excavation construction process, an embodiment of the present invention provides a continuous excavation construction method for a river channel in a restricted area.
The embodiment of the invention provides a construction method for continuous excavation of a river channel in a restricted area, which comprises the following steps:
s1: excavating a drainage ditch along the river direction in the river channel, so that upstream river water in the river channel flows along the drainage ditch;
s2: earth excavation is respectively carried out in the riverways on the two sides of the drainage ditch, and soil retaining is reserved on the two side edges of the drainage ditch;
s3: and after the river channel parts on the two sides of the drainage groove are excavated, intercepting river water on the upper upstream of the upper end of the drainage groove, and performing earth excavation on the drainage groove.
Further, the steps S2 and S3 further include:
s2 a: and excavating the next drainage ditch at the adjacent side of the lower end of the drainage ditch along the river direction to enable the next drainage ditch to be communicated with the lower end of the previous drainage ditch, respectively excavating earth in the river channels at the two sides of the next drainage ditch, and reserving retaining soil at the two side edges of the next drainage ditch.
Further, the step S2a is followed by:
s2 b: step S2a is repeated at least once.
Further, still include:
s4: and embedding a pipe culvert in the drainage ditch, and burying soil on the upper part of the pipe culvert to form a communication road of riverways on two sides of the drainage ditch.
Further, the drainage channel is located in the center of the river channel.
Further, the width of escape canal is 1 ~ 1.5 m.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: according to the construction method for the continuous excavation of the riverway in the limited area, the drainage groove is arranged in the riverway for drainage, so that the problem that a limited field is formed by arranging the diversion groove outside the riverway is solved, and the construction is not limited by the surrounding environment; when the drainage groove drains water, earth excavation construction is carried out on two sides of the drainage groove, so that the river channel excavation efficiency is improved, and the construction period is saved; in addition, the drainage channels are arranged in sections for earth excavation, and the method is suitable for earth excavation of rivers with long length and large river channel depth.
Drawings
FIG. 1 is a first schematic plan view of a method for continuous excavation of a river in a confined area according to the present invention;
FIG. 2 is a second schematic plan view of a method for continuous excavation of a river in a confined area according to the present invention;
FIG. 3 is a schematic first cross-sectional view of a construction method for continuous excavation of a river in a restricted area according to the present invention;
FIG. 4 is a schematic second cross-sectional view of a construction method for continuous excavation of a river in a restricted area according to the present invention;
fig. 5 is a third cross-sectional schematic view of the construction method for continuous excavation of the river in the restricted area.
In the figure: 1-river channel, 1a/1b/1 c-river channel section, 2/2a/2b/3 b-drainage groove, 3-river channel sideline and 4-soil retaining.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a construction method for continuous excavation of a river in a restricted area, which specifically includes the following steps:
s1: a drainage channel 2 is dug in the river course 1 along the river direction, and the upstream river water in the river course 1 flows along the drainage channel 2.
Generally, the drainage groove 2 is located in the center of the river channel 1 and in the middle of the river channel sidelines 3 on both sides of the river channel, so that sufficient construction space is reserved for both sides of the drainage groove 2. Because the relative river course 1 surface in drainage ditch groove 2 is sunken, consequently the river on the upper end upper reaches of drainage ditch groove 2 follows drainage ditch groove 2 flows downstream, ensures that whole river course 1's upstream and downstream keeps circulating, not breaking stream, the river course part of drainage ditch groove 2 both sides does not have the river inflow. The width of the drainage ditch 2 is determined according to the width of the river channel 1 and the water flow of the river channel 1, and is generally set to be 1-1.5 m.
S2: and earth excavation is respectively carried out in the riverways at the two sides of the drainage ditch 2, and retaining soil 4 is reserved at the two side edges of the drainage ditch 2.
After the drainage groove 2 is formed, earth excavation starts to be performed downward at portions of the waterway 1 on both sides of the drainage groove 2, respectively. And sufficient retaining soil 4 is retained when excavated near the drainage groove 2. It should be noted that the height of the soil retaining wall 4 is calculated according to the soil texture, and the downward digging height is determined to ensure that the soil retaining wall 4 cannot collapse, resulting in the damage of the drainage gutter 2.
In addition, when the length of the river channel 1 is short or only a certain part of the river channel needs to be subjected to drainage treatment, only one section of the drainage groove 2 needs to be excavated. However, in a river having a long river course 1 and a large river course depth, if only one drainage channel 2 is provided, the depth of the river course 1 is gradually increased along the river course direction, and when the depth of the river course 1 is too deep, the retaining walls 4 at both sides of the drainage channel 2 are difficult to be retained, and collapse may cause damage to the drainage channel 2. Therefore, the river channel 1 can be divided into a plurality of sections of river channel sections 1a, 1b and 1c which are connected with each other, the drainage groove 2 is arranged in each of the river channel sections 1a, 1b and 1c, earthwork excavation is carried out on the river channel parts at two sides of the drainage groove 2, and the river channel is constructed section by section. Specifically, the method comprises the following steps:
referring to fig. 1, 3 and 4, firstly, for two sections of the drainage channels 2, which can meet the requirement of river channel construction, a construction step S2a is performed: and excavating the next drainage groove 2b on the adjacent side of the lower end of the drainage groove 2a along the river direction to ensure that the next drainage groove 2b is communicated with the lower end of the previous drainage groove 2a, respectively excavating earth in the river channel sections 1b at two sides of the next drainage groove 2b, and retaining soil 4 at two side edges of the next drainage groove 2 b.
Referring to fig. 1, 3, 4 and 5, next, for the drainage groove 2 which needs to be provided with three or more drainage grooves, a construction step S2b is performed: and repeating the step S2a for one or more times according to the length of the river channel. If three drainage grooves 2 are provided, it is only necessary to continue to dig the drainage groove 2c in the next river course section 1c after the river course section 1b, and to retain the retaining soil 4 at both sides of the drainage groove 2 c. If need set up more drainage ditch groove 2, only need repeat above-mentioned step can. And finally, the drainage ditch 2 reaches a construction area at the bottom of the river channel 1, and the earthwork excavation construction of the river channel 1 part at the two sides of all the drainage ditch 2 is completed.
S3: and (3) finishing the excavation of the part of the river channel 1 on the two sides of the drainage groove 2, cutting off the river water on the upper end upstream of the drainage groove 2, and performing earthwork excavation on the drainage groove 2.
After the earthwork excavation of the river channel 1 parts at the two sides of all the drainage ditches 2 is finished, the upstream of the river channel 1 is cut off for a short time, and the earthwork excavation of all the drainage ditches 2 is finished, namely, all the earthwork excavation projects of the river channel 1 are finished. Here, because the work load of excavating all the drainage channels 2 is small, the time is short, and only the upstream of the river channel 1 needs to be temporarily blocked.
S4: pipe culvert is pre-buried in the drainage ditch 2, and soil is buried on the upper part of the pipe culvert to form a communication road of the riverways at two sides of the drainage ditch 2. This UNICOM road supplies when the river course earthwork of 2 both sides in escape canal excavates, equipment and personnel pass through to further improve the efficiency of construction.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A construction method for continuous excavation of a riverway in a restricted area is characterized by comprising the following steps:
s1: excavating a drainage ditch along the river direction in the river channel, so that upstream river water in the river channel flows along the drainage ditch;
s2: earth excavation is respectively carried out in the riverways on the two sides of the drainage ditch, and soil retaining is reserved on the two side edges of the drainage ditch;
s3: and after the river channel parts on the two sides of the drainage groove are excavated, intercepting river water on the upper upstream of the upper end of the drainage groove, and performing earth excavation on the drainage groove.
2. The method for continuous excavation construction of a river channel of a restricted area according to claim 1, wherein the steps between S2 and S3 further comprise:
s2 a: and excavating the next drainage ditch at the adjacent side of the lower end of the drainage ditch along the river direction to enable the next drainage ditch to be communicated with the lower end of the previous drainage ditch, respectively excavating earth in the river channels at the two sides of the next drainage ditch, and reserving retaining soil at the two side edges of the next drainage ditch.
3. The construction method for the continuous excavation of the riverway in the restricted area according to claim 2, characterized in that: the step S2a is followed by:
s2 b: step S2a is repeated at least once.
4. The method for continuous excavation construction of a river channel of a restricted area according to claim 1, further comprising:
s4: and embedding a pipe culvert in the drainage ditch, and burying soil on the upper part of the pipe culvert to form a communication road of riverways on two sides of the drainage ditch.
5. The construction method for the continuous excavation of the riverway of the restricted area according to claim 1, characterized in that: the drainage ditch groove is located the center of river course.
6. The construction method for the continuous excavation of the riverway of the restricted area according to claim 1, characterized in that: the width of escape canal is 1 ~ 1.5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559563.4A CN113293732A (en) | 2021-05-21 | 2021-05-21 | Construction method for non-stop excavation of riverway in restricted area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559563.4A CN113293732A (en) | 2021-05-21 | 2021-05-21 | Construction method for non-stop excavation of riverway in restricted area |
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| Publication Number | Publication Date |
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| CN113293732A true CN113293732A (en) | 2021-08-24 |
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| CN202110559563.4A Pending CN113293732A (en) | 2021-05-21 | 2021-05-21 | Construction method for non-stop excavation of riverway in restricted area |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563595A (en) * | 2004-04-18 | 2005-01-12 | 曾德胜 | Harness method for dredging riverway containing much fluvial sand |
| CN108547251A (en) * | 2018-04-17 | 2018-09-18 | 北京夏都水利工程有限公司 | A kind of method that dredging is dug in water conservancy punching |
| CN110804993A (en) * | 2019-11-26 | 2020-02-18 | 深圳市东深工程有限公司 | River regulation construction method |
| CN111042144A (en) * | 2019-12-27 | 2020-04-21 | 中冶天工集团有限公司 | Excavation method for foundation pit of underground beam under condition of continuous flow of riverway in cold region |
-
2021
- 2021-05-21 CN CN202110559563.4A patent/CN113293732A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563595A (en) * | 2004-04-18 | 2005-01-12 | 曾德胜 | Harness method for dredging riverway containing much fluvial sand |
| CN108547251A (en) * | 2018-04-17 | 2018-09-18 | 北京夏都水利工程有限公司 | A kind of method that dredging is dug in water conservancy punching |
| CN110804993A (en) * | 2019-11-26 | 2020-02-18 | 深圳市东深工程有限公司 | River regulation construction method |
| CN111042144A (en) * | 2019-12-27 | 2020-04-21 | 中冶天工集团有限公司 | Excavation method for foundation pit of underground beam under condition of continuous flow of riverway in cold region |
Non-Patent Citations (3)
| Title |
|---|
| 何佩德等: "《小型水利工程施工》", 31 July 1995, 水利电力出版社 * |
| 赵明献: "浅谈河道土方疏浚及质量控制", 《百度搜索》 * |
| 魏温芝等, 北京工业大学出版社 * |
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Application publication date: 20210824 |
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