CN113250266A - Dry-type dredging method for river channel - Google Patents
Dry-type dredging method for river channel Download PDFInfo
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- CN113250266A CN113250266A CN202110680949.0A CN202110680949A CN113250266A CN 113250266 A CN113250266 A CN 113250266A CN 202110680949 A CN202110680949 A CN 202110680949A CN 113250266 A CN113250266 A CN 113250266A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000010276 construction Methods 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000010802 sludge Substances 0.000 claims abstract description 49
- 238000005086 pumping Methods 0.000 claims abstract description 26
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 238000005056 compaction Methods 0.000 claims abstract description 10
- 238000013461 design Methods 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 7
- 238000009412 basement excavation Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 7
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- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
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- 239000004575 stone Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/907—Measuring or control devices, e.g. control units, detection means or sensors
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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
- E02B3/023—Removing sediments
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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
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
- E02F9/261—Surveying the work-site to be treated
- E02F9/262—Surveying the work-site to be treated with follow-up actions to control the work tool, e.g. controller
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- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The application provides a dry-type dredging method for a river channel, which comprises the following steps: paying off a construction area and a construction red line according to the construction design, and determining a construction range; measuring and paying off the water surface elevation of the river channel, and calculating the sectional water quantity; retesting the top elevation of the sludge in the river channel to determine the sectional sludge cleaning amount; according to the planned red line and the greening construction blue line, the site is subjected to surface cleaning, rolling and leveling to a preset standard compaction degree; hardening the concrete in the empty field and road, and burying a drain pipe; setting out the cofferdam positions on two banks according to the length of the river channel, starting from the bank, closing in a single direction, filling in layers and rolling in layers; calculating the total pumping volume according to the elevation of the water surface and the river bottom, and pumping water into a downstream river reach; excavating a longitudinal drainage ditch on each section at two sides outside the river sludge to enable accumulated water to return to the ditch, and pumping water by a water pump; and excavating the sludge to the river bank in sections, stacking and airing until the sludge is aired to be solid, and excavating, loading, and transporting the sludge outside.
Description
Technical Field
The application relates to the technical field of river channel dredging treatment, in particular to a dry type dredging method for a river channel.
Background
The river channel is used as a carrier for water resource transportation, and the river channel silts due to soil migration and deposition caused by the washing of running water and the deposition of other impurities such as algae contained in water in the long-term transportation process. The continuous accumulation of silt will lead to the riverbed to rise, causes the transport difficulty of water resource, still influences the normal performance of each item function such as flood control, drainage, irrigation, water supply, navigation simultaneously, and the pollutant constantly increases in the river course, influences quality of water blacking, becomes smelly. In order to restore the normal functions of the river and promote the rapid development of the economic society, the sludge deposited on the river bottom needs to be dredged.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The application aims to provide a dry dredging method for a river channel, which aims to solve or alleviate the problems in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions:
the application provides a dry-type dredging method for a river channel, which comprises the following steps: s101, positioning and paying off, and measuring elevation: paying off a construction area and a construction red line according to the construction design, and determining a construction range; measuring and paying off the water surface elevation of the river channel, and calculating the sectional water quantity; retesting the top elevation of the sludge in the river channel to determine the sectional sludge cleaning amount; step S102, site surface cleaning and leveling: according to the planned red line and the greening construction blue line, the site is subjected to surface cleaning, rolling and leveling to a preset standard compaction degree; step S103, field hardening and temporary pavement construction: hardening concrete on an empty site and a road, and burying a drain pipe, wherein the hardened road slopes to the river channel, and the slope is 2%; step S104, cofferdam construction: setting out the cofferdam positions on two banks according to the length of the river channel, starting from the bank, closing in a single direction, filling in layers and rolling in layers; wherein the slope of the upstream side slope of the cofferdam is 1: 2; the slope of the side slope on the back surface of the cofferdam is 1: 1.5; step S105, pumping water: calculating the total pumping volume according to the elevation of the water surface and the river bottom, and pumping water into a downstream river reach; step S106, sludge excavation and outward transportation: excavating a longitudinal drainage ditch on each section at two sides outside the river sludge to enable accumulated water to return to the ditch, and pumping water by a water pump; excavating sludge to a river bank in sections, stacking and airing until the sludge is aired to be solid, and excavating, loading, and transporting; wherein, leveling is carried out according to the preset requirement after the riverbed bottom is desilted.
Preferably, in step S101, a site network point is established according to the predetermined coordinates and elevation, so as to ensure the accuracy of elevation and position.
Preferably, in step S101, a plane control system is established by using a wire measurement method, and measurement and setting-out are performed by using a GPS, an RTK and a steel ruler.
Preferably, in step S102, the preset standard degree of compaction is not less than 90%.
Preferably, in step S103, the space and the road are hardened by C15 concrete, the thickness of the road is 25 cm, and a PC drainage pipe with a diameter of 150 mm is buried at intervals of 30 m.
Preferably, in step S104, the cofferdam filling material is cohesive soil, the width of the cofferdam top is 3 meters, and the cofferdam top surface is 50 centimeters higher than the river surface.
Preferably, in step S105, the number model of the water pumping pumps is determined according to the calculated water pumping volume.
Preferably, in step S106, the drainage ditch has a width of 1 m and a depth of 0.5 m.
Preferably, in step S106, before excavating the sludge in sections, an excavation equipment channel with a gradient not greater than 1:3 is built along the bank of the river channel, and a steel plate is used for protecting the bottom.
Preferably, in step S106, the stacking height of the sludge on the river bank is not more than 1.5 m.
Has the advantages that:
according to the dry-type dredging method for the river channel, before construction, firstly, paying off is carried out on a construction area and a construction red line according to construction design, and a construction range is determined; measuring and paying off the water surface elevation of the river channel, and calculating the sectional water quantity; retesting the top elevation of the sludge in the river channel, determining the sectional sludge cleaning amount, and realizing the preparation work of positioning and paying off and measuring the elevation before construction; in the construction process, after the ground is subjected to surface cleaning and rolling leveling to a preset standard compaction degree according to a planned red line and a greening construction blue line, concrete is adopted for hardening the empty ground and the road to realize surface cleaning, leveling and hardening of the ground, and preparation is made for cofferdam construction and desilting; then, according to the river course site, lofting the cofferdam position on two banks of the river course, starting from the bank, singly folding, filling in layers, rolling in layers, and completing cofferdam construction; then, pumping water for blocking water on the upstream surface of the cofferdam, and pumping the water into a downstream river reach so as to desilt the bottom of the river bed; and finally, excavating the sludge to a river bank in sections, stacking and airing until the sludge is aired to be solid, excavating, loading and transporting the sludge outside, and realizing the complete dredging work of the river channel. Whole process, the river course desilting segmentation is gone on, and preparation in earlier stage goes on with later stage construction simultaneously, and the work progress is high-efficient quick, has both guaranteed the smooth and easy of river course desilting engineering, has guaranteed again to have fallen to the minimum to peripheral influence.
The dry dredging method for the river channel comprises the steps of segmenting the river channel and building cofferdams during construction, draining accumulated water in a river pool in the range of the cofferdams by using a water pump, carrying out dredging construction after draining, and carrying out dredging along two sides of the river channel by adopting a long-arm excavator excavation or manual excavation mode according to site conditions of a construction site.
By adopting the dry-type dredging method for the river channel, on one hand, the river channel needs to be locally cut off in the construction process, and the method is suitable for dredging the river channel which has a certain space at two banks and is convenient for cut-off construction; on the other hand, the river is thorough in dredging, the dredging depth is easy to control, the sludge concentration is high, the transportation cost is low, and therefore the engineering cost is relatively low.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. Wherein:
fig. 1 is a schematic flow diagram of a dry dredging method for river channels according to some embodiments of the present application;
fig. 2 is a schematic view of a section of a weir provided in accordance with some embodiments of the present application.
Detailed Description
The present application will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the application and are not limiting of the application. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present application cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
In the description of the present application, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present application but do not require that the present application must be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.
Fig. 1 is a schematic flow diagram of a dry dredging method for river channels according to some embodiments of the present application; as shown in fig. 1, the dry dredging method for river comprises the following steps:
s101, positioning and paying off, and measuring elevation: paying off a construction area and a construction red line according to the construction design, and determining a construction range; measuring and paying off the water surface elevation of the river channel, and calculating the sectional water quantity; retesting the top elevation of the sludge in the river channel to determine the sectional sludge cleaning amount;
in the embodiment of the application, the site mesh points are established according to the predetermined coordinates and the predetermined elevations, so that the elevations and the positions are ensured to be accurate. Specifically, according to the coordinates and the elevation provided by the construction design, a field control network point is established by using a GPS and an RTK, the elevation and the position are ensured to be accurate, and further, a plane and elevation control system is established on the field so as to carry out measurement control during the whole construction period.
In the plane control system, a conductor measuring method is adopted to establish the plane control system, a GPS, an RTK and a steel ruler are adopted to carry out measurement and pay-off, and a linear control pile is arranged. The position of the control pile is stable and reliable, and the control pile is convenient to protect during construction and is convenient to apply. In the elevation control system, a measuring instrument adopts a GPS and an RTK, the elevation is led to each temporary level point according to the level points provided by a user, the temporary level points are firm and stable, the distance is not more than 200 m, the front and the back are in full view, and the temporary level points and the design level points are closed in retest.
Step S102, site surface cleaning and leveling: according to the planned red line and the greening construction blue line, the site is subjected to surface cleaning, rolling and leveling to a preset standard compaction degree; specifically, the preset standard compaction degree is not lower than 90%.
In the embodiment of the application, according to a planned red line and a greening construction blue line, in order to not impression later-stage greening construction, the site is cleared to the red line and used as a temporary construction sidewalk and a fence installation site; for segments without slope protection structures and with shrubs and construction wastes, the surface is directly excavated and cleaned through excavation equipment (such as an excavator), green plants are transplanted or felled, and the construction efficiency is improved. And (4) clearing the surface garbage, stacking the garbage at fixed points, then transporting the garbage to a soil piling field through a muck truck, and stacking the broken slope protection structure masonry stone and the construction garbage for constructing an access road.
Step S103, field hardening and temporary pavement construction: hardening concrete on an empty site and a road, and burying a drain pipe, wherein the hardened road slopes to the river channel, and the slope is 2%; specifically, C15 concrete is adopted to harden the space and the road, the thickness of the road is 25 cm, and a PC drain pipe with the diameter of 150 mm is buried at intervals of 20 m.
In the embodiment of the application, a construction access way is built 1 m outside a riverway green belt and is hardened, wherein the hardened access way is 4.5 m wide and 240 m long, a part of the hardened access way is selected as a safety experience area, and a drainage ditch is arranged outside the safety experience area and communicated with the riverway.
Step S104, cofferdam construction: setting out the cofferdam positions on two banks according to the length of the river channel, starting from the bank, closing in a single way, filling in layers, and rolling in layers; wherein the slope of the upstream side slope of the cofferdam is 1: 2; the slope of the side slope on the back surface of the cofferdam is 1: 1.5;
FIG. 2 is a schematic illustration of a section of a weir provided in accordance with some embodiments of the present application; as shown in figure 2, the cofferdam filling material mainly comprises cohesive soil, the width of the top of the cofferdam is 3 meters, and the top surface of the cofferdam is 50 centimeters higher than the water surface of the river. The slope of one side of the upstream surface of the cofferdam is smaller than the slope of one side of the back surface of the cofferdam, so that the water blocking effect of the cofferdam can be better realized. The water outlet surface of the cofferdam filling process follows the principles of layered filling and layered rolling, and the compaction degree is not lower than 90%. Therefore, the cofferdam construction effect is fully guaranteed, and the cofferdam construction safety is improved.
Step S105, pumping water: calculating the total pumping volume according to the elevation of the water surface and the river bottom, and pumping the water into a downstream river reach; specifically, the number and the model of the water pumping pumps are determined according to the calculated water pumping volume.
In the embodiment of the application, the water surface and river bottom elevation are measured for each section, and the total pumping volume is calculated.Because each section elevation is different, the calculation is carried out by combining the vertical section, the cross section and the plane diagram. The number and the type of the water pumps (for example: 150 m) are selected according to the volume of the river water31500w) and temporarily distributing power to the generator according to the selected type of the water pump.
In this application embodiment, because the field construction power consumption is not big, and the large quota power consumption time quantum is shorter (the water pump draws water power consumption is great), the construction circuit is longer, therefore adopts interim generator power supply. Moreover, because the water consumption is less in the early stage of the site and is mostly used for repairing and greening the bank of the river channel in the later stage, municipal water does not need to be introduced into the dredging section of the river channel.
Step S106, sludge excavation and outward transportation: excavating a longitudinal drainage ditch on each section at two sides outside the river sludge to enable accumulated water to return to the ditch, and pumping water by a water pump; excavating sludge to a river bank in sections, stacking and airing until the sludge is aired to be solid, and excavating, loading, and transporting; wherein, leveling is carried out according to the preset requirement after the riverbed bottom is desilted.
In the embodiment of the application, the width of the drainage ditch dug at the two sides of the sludge outside of the river channel in each section is 1 meter, and the depth of the drainage ditch is 0.5 meter, so that accumulated water in the river channel can conveniently return to the ditch, and all accumulated water is pumped by a water pump.
In the embodiment of the application, sectional excavation is adopted when the sludge is excavated, an upper channel and a lower channel of excavation equipment are built on a river bank, the gradient of the channels is not more than 1:3, a steel plate bottom is adopted for mechanical construction on the sludge to prevent the excavation machinery from sinking into the sludge, and a road is paved in advance when the excavation machinery advances by one section. And leveling the river bed bottom according to requirements after dredging is finished.
In the embodiment of the application, the sludge is excavated to the river bank for stacking and airing, and the stacking height is not more than 1.5 m, so that the sludge is prevented from flowing into the river channel again. And when the sludge is aired to be solid, excavating, loading and transporting the sludge. In the conveying process, measures are taken to prevent the phenomena of dripping, scattering, leakage and the like; the transport vehicle runs according to a designated route in the process of internal and external transportation.
In the embodiment of the application, the riverway is coffered, the construction is carried out in sections, the accumulated water in the riverway in the cofferdam section is completely drained, then the silt at the bottom of the riverway is removed by a digging machine, the silt is temporarily stacked to the bank, and the muck vehicle is used for external transportation to a waste soil yard after being aired for 5-7 days. Whole process, the river course desilting segmentation is gone on, and preparation in earlier stage goes on simultaneously with later stage construction, and the work progress is high-efficient quick.
In the embodiment of the application, before construction, firstly, paying off is carried out on a construction area and a construction red line according to a construction design, and a construction range is determined; measuring and paying off the water surface elevation of the river channel, and calculating the sectional water quantity; retesting the top elevation of the sludge in the river channel, determining the sectional sludge cleaning amount, and realizing the preparation work of positioning and paying off and measuring the elevation before construction; in the construction process, after the ground is subjected to surface cleaning and rolling leveling to a preset standard compaction degree according to a planned red line and a greening construction blue line, concrete is adopted for hardening the empty ground and the road to realize surface cleaning, leveling and hardening of the ground, and preparation is made for cofferdam construction and desilting; then, according to the river course site, lofting the cofferdam position on two banks of the river course, starting from the bank, singly folding, filling in layers, rolling in layers, and completing cofferdam construction; then, pumping water for blocking water on the upstream surface of the cofferdam, and pumping the water into a downstream river reach so as to desilt the bottom of the river bed; and finally, excavating the sludge to a river bank in sections, stacking and airing until the sludge is aired to be solid, excavating, loading and transporting the sludge outside, and realizing the complete dredging work of the river channel. Whole process, the river course desilting segmentation is gone on, and preparation in earlier stage goes on with later stage construction simultaneously, and the work progress is high-efficient quick, has both guaranteed the smooth and easy of river course desilting engineering, has guaranteed again to have fallen to the minimum to peripheral influence.
The dry dredging construction method for the river channel comprises the steps of segmenting the river channel and building cofferdams during construction, draining accumulated water in a river pool in the range of the cofferdams by using a water pump, carrying out dredging construction after draining, and carrying out dredging along two sides of the river channel by adopting a long-arm excavator excavation or manual excavation mode according to site conditions of a construction site.
The dry-type dredging construction method for the river channel has the advantages that on one hand, the river channel needs to be locally cut off in the construction process, and the dry-type dredging construction method is suitable for dredging the river channel which has a certain space at two banks and is convenient for cut-off construction; on the other hand, the river is thorough in dredging, the dredging depth is easy to control, the sludge concentration is high, the transportation cost is low, and therefore the engineering cost is relatively low.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A dry-type dredging method for a river channel is characterized by comprising the following steps:
s101, positioning and paying off, and measuring elevation: paying off a construction area and a construction red line according to the construction design, and determining a construction range; measuring and paying off the water surface elevation of the river channel, and calculating the sectional water quantity; retesting the top elevation of the sludge in the river channel to determine the sectional sludge cleaning amount;
step S102, site surface cleaning and leveling: according to the planned red line and the greening construction blue line, the site is subjected to surface cleaning, rolling and leveling to a preset standard compaction degree;
step S103, field hardening and temporary pavement construction: hardening concrete on an empty site and a road, and burying a drain pipe, wherein the hardened road slopes to the river channel, and the slope is 2%;
step S104, cofferdam construction: setting out the cofferdam positions on two banks according to the length of the river channel, starting from the bank, closing in a single direction, filling in layers and rolling in layers; wherein the slope of the upstream side slope of the cofferdam is 1: 2; the slope of the side slope on the back surface of the cofferdam is 1: 1.5;
step S105, pumping water: calculating the total pumping volume according to the elevation of the water surface and the river bottom, and pumping water into a downstream river reach;
step S106, sludge excavation and outward transportation: excavating a longitudinal drainage ditch on each section at two sides outside the river sludge to enable accumulated water to return to the ditch, and pumping water by a water pump; excavating sludge to a river bank in sections, stacking and airing until the sludge is aired to be solid, and excavating, loading, and transporting; wherein, leveling is carried out according to the preset requirement after the riverbed bottom is desilted.
2. The dry dredging method for river channel according to claim 1, wherein in step S101,
and establishing site mesh points according to the predetermined coordinates and elevations to ensure the accuracy of the elevations and positions.
3. The dry dredging method for river channel according to claim 1, wherein in step S101, a plane control system is established by using a wire measuring method, and measurement setting-out is performed by using GPS, RTK and a steel ruler.
4. The dry dredging method for river channel according to claim 1, wherein the predetermined standard degree of compaction is not less than 90% in step S102.
5. The dry dredging method for river channel according to claim 1, wherein in step S103, the space and the road are hardened with C15 concrete, the road thickness is 25 cm, and a PC drainage pipe with 150 mm diameter is buried at intervals of 30 m.
6. The dry dredging method for river channel according to claim 1, wherein in step S104, the cofferdam filling material is cohesive soil, the width of the cofferdam top is 3 meters, and the cofferdam top surface is 50 cm higher than the river channel water surface.
7. The dry dredging method for river channel according to claim 1, wherein in step S105, the number of the water pumping pumps is determined according to the calculated pumping volume.
8. The dry dredging method for river channel according to claim 1, wherein the drainage ditch has a width of 1 m and a depth of 0.5 m in step S106.
9. The dry dredging method for river channel according to claim 1, wherein before excavating the sludge in sections, excavating equipment channels with a gradient of not more than 1:3 are constructed along the river bank of the river channel, and a steel plate is used for protecting the bottom in step S106.
10. A dry dredging method for river course according to any one of claims 1-9, wherein the stacking height of the sludge on the river bank is not more than 1.5 m in step S106.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110680949.0A CN113250266A (en) | 2021-06-18 | 2021-06-18 | Dry-type dredging method for river channel |
| PCT/CN2021/104828 WO2022095494A1 (en) | 2021-06-18 | 2021-07-06 | Dry desilting method for riverway |
| LU503303A LU503303B1 (en) | 2021-06-18 | 2021-07-06 | METHOD OF DRY-TYPE DESILTING FOR RIVER COURSE |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110680949.0A CN113250266A (en) | 2021-06-18 | 2021-06-18 | Dry-type dredging method for river channel |
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| CN113250266A true CN113250266A (en) | 2021-08-13 |
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| CN202110680949.0A Pending CN113250266A (en) | 2021-06-18 | 2021-06-18 | Dry-type dredging method for river channel |
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| CN (1) | CN113250266A (en) |
| LU (1) | LU503303B1 (en) |
| WO (1) | WO2022095494A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638355A (en) * | 2021-08-20 | 2021-11-12 | 福建省红日水利水电工程有限公司 | Intelligent construction method for water conservancy river regulation engineering |
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Also Published As
| Publication number | Publication date |
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| WO2022095494A1 (en) | 2022-05-12 |
| LU503303B1 (en) | 2023-05-12 |
| LU503303A1 (en) | 2023-01-10 |
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