CN113250265A - River channel half-dry type dredging method - Google Patents
River channel half-dry type dredging method Download PDFInfo
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- CN113250265A CN113250265A CN202110680948.6A CN202110680948A CN113250265A CN 113250265 A CN113250265 A CN 113250265A CN 202110680948 A CN202110680948 A CN 202110680948A CN 113250265 A CN113250265 A CN 113250265A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000010276 construction Methods 0.000 claims abstract description 69
- 239000010802 sludge Substances 0.000 claims abstract description 47
- 238000004140 cleaning Methods 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 16
- 238000005086 pumping Methods 0.000 claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 239000004575 stone Substances 0.000 claims abstract description 13
- 238000005056 compaction Methods 0.000 claims abstract description 10
- 239000002689 soil Substances 0.000 claims abstract description 9
- 238000013461 design Methods 0.000 claims abstract description 8
- 238000009991 scouring Methods 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000002002 slurry Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000011218 segmentation Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
-
- 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
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9293—Component parts of suction heads, e.g. edges, strainers for preventing the entry of stones or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/005—Equipment for conveying or separating excavated material conveying material from the underwater bottom
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/10—Pipelines for conveying excavated materials
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The application provides a river course half-dry type dredging method, 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; 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 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%; 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; pumping the sludge in the river channel by a sludge pump and transporting the sludge to a sludge dewatering field; and cleaning the slag stones left by scouring in the river bottom, stacking the slag stones at fixed points, and transporting the slag stones to a soil piling field from the outside of the slag car.
Description
Technical Field
The application relates to the technical field of dredging treatment of a river channel, in particular to a river channel semi-dry type dredging method.
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 river channel semi-dry type dredging method so as 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 river course half-dry type dredging method, 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; 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, sucking mud and dredging: pumping the sludge in the river channel by a sludge pump and transporting the sludge to a sludge dewatering field; step S106, cleaning dregs: and cleaning the slag stones left by scouring in the river bottom, stacking the slag stones at fixed points, and transporting the slag stones to a soil piling field from the outside of the slag car.
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, pumping water in the river channel to a municipal pipe network, and connecting a dredge pump to the municipal pipe network; the method comprises the steps of excavating a mud collection pit at a mud suction pump point, placing the mud suction pump in the mud collection pit, pumping mud into transportation equipment through the mud suction pump, and transporting the mud to a sludge dewatering field by the transportation equipment.
Preferably, in step S105, the length and width of each mud collection pit are 2 meters, and the depth is 1 meter.
Preferably, in step S105, the river bottom sludge is flushed by the high-pressure water gun, so that the river bottom slurry rolls and flows, and the sludge is pumped by the sludge pump.
Has the advantages that:
in the river channel semi-dry type dredging method provided by the embodiment of the application, before construction, firstly, a construction area and a construction red line are paid off according to construction design, and a construction range is determined; 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; and then, the sludge in the river channel is pumped by the sludge pump and is delivered to a sludge dewatering field, so that the complete dredging work of the river channel is realized. 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.
During construction, the river channel is segmented and cofferdams are built, then, the water pump is used for discharging the river pool water in the range of the cofferdams to a sufficient stirring depth, the high-pressure water gun is used for scouring and damaging river bottom sludge, and then the slurry pump is used for pumping and discharging the slurry to a sludge centralized treatment area. The muck which cannot be scoured and damaged at the river bottom can be lifted to a muck truck for outward transportation in a mode of manual cleaning or excavation by a long-arm excavator.
By adopting the river channel semi-dry type dredging method, on one hand, the river channel needs to be locally cut off, the method is suitable for dredging the river channel which is convenient for cut-off construction and has certain operation space on two banks of the river channel, and is particularly suitable for scenes that revetments and greening on two sides of an urban inland river are well constructed and large construction machinery cannot enter and exit; on the other hand, the dredging is thorough, the operation is simple and convenient, the bridge and other river channel barriers can be conveniently penetrated, the secondary pollution in the transportation process can be avoided by using the pipeline to convey the slurry, and the interference to residents on two sides of the river channel is less.
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 chart of a river semi-dry dredging method 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 chart of a river semi-dry dredging method 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; 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, sucking mud and dredging: and pumping the sludge in the river channel by a sludge pump and transporting the sludge to a sludge dewatering field. Specifically, water in the river channel is pumped to a municipal pipe network, and a dredge pump is connected to the municipal pipe network; the method comprises the steps of excavating a mud collection pit at a mud suction pump point, placing the mud suction pump in the mud collection pit, pumping mud into transportation equipment through the mud suction pump, and transporting the mud to a sludge dewatering field by the transportation equipment.
In the embodiment of the application, the length of each mud collection pit is 2 meters, and the depth of each mud collection pit is 1 meter, so that the mud at the bottom of a river can flow into the mud collection pits uninterruptedly. Here, the river bottom silt is washed away through the high-pressure squirt that is connected with municipal pipe network, makes river bottom mud roll, flows to in the mud collection hole, is sucked silt by the dredge pump. When municipal pipe network water pressure can not satisfy the pressure of high-pressure squirt, set up the force (forcing) pump between municipal pipe network and high-pressure squirt, improve the pressure of high-pressure squirt, make the washing effect to river bed silt better.
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 is not needed to be introduced in the early stage of dredging the river channel.
Step S106, cleaning dregs: and cleaning the slag stones left by scouring in the river bottom, stacking the slag stones at fixed points, and transporting the slag stones to a soil piling field from the outside of the slag car.
In the embodiment of the application, in the transportation process, the transportation vehicle runs according to a specified route in the process of transporting the internal goods and the external goods, and measures are taken to prevent the phenomena of dripping, scattering, leaking and the like.
In the embodiment of the application, the cofferdam is built to the river course, and the segmentation is under construction, and the river course ponding row in the cofferdam section is taken out to reserving apart from the river bottom 20cm, then adopts stirring suction means to stir, pump drainage desilting, uses high-pressure squirt to assist on stirring suction means next door by the workman simultaneously, and the silt of pump drainage is transported to the dehydration place by the mud truck. 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; 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; and then, the sludge in the river channel is pumped by the sludge pump and is delivered to a sludge dewatering field, so that the complete dredging work of the river channel is realized. 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.
During construction, the river channel is segmented and cofferdams are built, then, the water pump is used for discharging the river pool water in the range of the cofferdams to a sufficient stirring depth, the high-pressure water gun is used for scouring and damaging river bottom sludge, and then the slurry pump is used for pumping and discharging the slurry to a sludge centralized treatment area. The muck which cannot be scoured and damaged at the river bottom can be lifted to a muck truck for outward transportation in a mode of manual cleaning or excavation by a long-arm excavator.
By adopting the river channel semi-dry type dredging method, on one hand, local cutoff of the river channel is needed, and the method is suitable for dredging the river channel which is convenient for cutoff construction and has certain operation space on two banks of the river channel; on the other hand, the dredging is thorough, the operation is simple and convenient, the bridge and other river channel barriers can be conveniently penetrated, the secondary pollution in the transportation process can be avoided by using the pipeline to convey the slurry, and the interference to residents on two sides of the river channel is less.
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 (9)
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; 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, sucking mud and dredging: pumping the sludge in the river channel by a sludge pump and transporting the sludge to a sludge dewatering field;
step S106, cleaning dregs: and cleaning the slag stones left by scouring in the river bottom, stacking the slag stones at fixed points, and transporting the slag stones to a soil piling field from the outside of the slag car.
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,
pumping water in the river channel to a municipal pipe network, and connecting a dredge pump to the municipal pipe network; the method comprises the steps of excavating a mud collection pit at a mud suction pump point, placing the mud suction pump in the mud collection pit, pumping mud into transportation equipment through the mud suction pump, and transporting the mud to a sludge dewatering field by the transportation equipment.
8. The dry dredging method for river channel according to claim 7, wherein in step S105, the length and width of the mud collecting pit are 2 meters and the depth is 1 meter.
9. The dry dredging method for river according to any one of claims 1-8, wherein in step S105, the river bottom sludge is washed by a high pressure water gun, so that the river bottom slurry is rolled and flowed to be pumped by a sludge pump.
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2021
- 2021-06-18 CN CN202110680948.6A patent/CN113250265A/en active Pending
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