CN1614161A - Self-desilting and dredging method and apparatus for reservoir - Google Patents
Self-desilting and dredging method and apparatus for reservoir Download PDFInfo
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- CN1614161A CN1614161A CN 200410100942 CN200410100942A CN1614161A CN 1614161 A CN1614161 A CN 1614161A CN 200410100942 CN200410100942 CN 200410100942 CN 200410100942 A CN200410100942 A CN 200410100942A CN 1614161 A CN1614161 A CN 1614161A
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- trunk line
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Abstract
A method and apparatus for removing the silt and the floating garbage from reservoir is disclosed. A trunk is laid on the bottom of reservoir and passes through the dam. A drain valve is installed to its external end. The water valve and the movable branch pipes with sucking head are installed to the internal trunk. When said drain valve is opened, the silt and floating garbage can be sucked in the trunk and then drained out.
Description
Technical field
Method and the device thereof, particularly reservoir that the present invention relates to remove the silt of reservoir sedimentation and remove the reservoir floater are from rushing down desilting, the method for floating clearly and device thereof.
Background technology
The silt that current are carried secretly enters reservoir, makes sedimentation in the reservoir bottom because flow velocity slows down, and this is a natural quality.People do not have or do not have thoroughly to solve the principle that water sand is ruled together in reservoir construction for a long time.The initial stage disguise of the problem of reservoir sediment accumulation is left in the basket easily in addition, does not form effective prophylactico-therapeutic measures for a long time, causes silt to deposit into the persistent ailment of nearly all river course reservoir.The Sedimentation Problems negative effect that construction brings to reservoir is many-sided, and wherein obvious and the most outstanding is loss storage capacity, shortens the application life of reservoir.Interrelated data shows, " the annual reservoir capacity that lose because of the silt alluvial account for world's aggregate storage capacity 1% ", " in decades from now on, because silt deposits, half of reservoir capacity will disappear in the world ".This situation is more serious in the north of China.For example the Shanxi Province adds up 43 large and medium-sized reservoirs of the whole province, and total reservoir storage is 22.3 * 10
8m
3, lost 31.5% by 1974, promptly lose 7 * 10
8m
3, lose 0.5 * 10 every year on average
8m
3According to Shaanxi Province's statistics in 1973, the whole province 100 * 10
4m
3With 192 of upper storage reservoirs, aggregate storage capacity 15 * 10
8m
3, lost 31.6%, promptly lose 4.7 * 10
8m
3, 120 reservoirs that wherein built up in the past in 1970 have lost its storage capacity 53.5%, and there have 43 reservoirs to be become silted up fully to be full.
Yet, the reservoir row of existing China and foreign countries method for determining sand, as hold arrange clearly muddy, the row of choking water husky, along the different rearrangement drift sand method that journey is washed away, headcut scour etc. (seeing " reservoir desilting " by compilings such as Jian Hanmin publication of " reservoir sedimentation " chapter 5 and in December, 2003 for details) and Ministry of Water Resources repeatedly test in the middle reaches, the Yellow River significant limitation is arranged all.The one, the total amount of row's sand is limited, can't administer the reservoir deposits problem at all, all uses as above-mentioned all the husky way of row of Sanmenxia Reservoir, but is difficult to escape the misfortune (mainly referring to water storage function) that almost becomes useless storehouse because of the silt alluvial eventually.The 2nd, water supply volume is excessive, and benefit is on the low side.As: the different rearrangement drift sand test of test in 2003, total amount of water to be discharged is 26.06 hundred million m
3, the outbound mean sediment concentration is 12.2kg/m
3, go into husky 6,640 ten thousand tons of ooze altogether, one ton of about water supply volume of silt of every row is 39m
3(husky test effect is transferred in the Yellow River water transfer first that sees Yellow River Water Conservancy Committee's issue for details).Husky test is transferred in the Yellow River water transfer for the second time in 2004, and unit transfers husky water supply volume still high, and it is 27.34m that Xiaolangdi Dam Project is whenever washed away one ton of silt water supply volume
3, the water supply volume of going into ooze sand is bigger, about 72m
3(seeing Economic Daily 1 edition report on July 16th, 2004 for details).
Owing to assembling many floating things on the reason of nature and the artificial water surface of factor before reservoir dam, not only be repugnant to the eye polluted-water, the normal operation in safety and power station but also navigate in the serious threat reservoir area.According to relevant report, the floating thing total amount that the reservoir area of Three Gorges is produced every year is about 400,000 tons.Owing to there is not maturation effectively to float engineering services clearly, the work of floating clearly is very passive.Two from Japanese import are floated ship clearly, and the every year of single ship, the amount of floating only was about 40,000 tons clearly.Because before a large amount of floating things accumulates in reservoir dam, seriously affect the navigate normal operation in safety and power station of reservoir area.It is reported: in 19 days of on September 13rd, 2004 to October 1, over-water floats has caused 32 outage of Ge Zhou Ba ship lock, and interrupt 1.7 average every day, reached 5 times in one day when the highest.(opinion " Economic Daily " on October 12nd, 2004 the 3rd edition) this power station influences because of floating thing every year, is forced to the economic loss that generation outage causes and reaches several hundred million units.
Summary of the invention
The object of the present invention is to provide a kind of reservoir from rushing down desilting, the method for floating clearly and device thereof, utilize the main body attribute of reservoir filling accumulation of energy, rule together by method of the present invention and equipment realization water sand thereof, the retaining that utilizes reservoir is from rushing down desilting, floating clearly, can remove silt and the preceding floating thing of removing reservoir dam in the reservoir effectively, and row's water supply volume husky, that float clearly is less, and desilting row cost husky, that float clearly is low, effective.
A kind of reservoir comprises the following steps: from the method for rushing down desilting, floating clearly
1, vertically lays a rigidity trunk line along the reservoir area in the bottom of the reservior, the end of trunk line passes reservoir dam, be positioned on the person in charge road junction of reservoir dam outside drain valve is installed, be positioned on the trunk line of reservoir dam and connecting movably branch pipe(tube), connecting desilting or clear bleaching device at the end of branch pipe(tube), be positioned on the trunk line of dam body inboard water compensating valve is installed;
2, close drain valve on the trunk line, open the water compensating valve on the trunk line, allow be full of water in main, the branch pipe(tube) after, close water compensating valve;
3, when removing water-bed silt, Accrete clearing device is the desilting suction nozzle, with the desilting suction nozzle pool bottom of dredging operation of submerging, open the drain valve on the trunk line, water in the trunk line is let out down rapidly, produced negative pressure in trunk line and the branch pipe(tube), start the desilting suction nozzle simultaneously, the propeller that the desilting suction nozzle rotates at a high speed stirs or tunnels the silt of deposition, and the current pressure reduction in the trunk line makes silt stream enter trunk line and drain into the dam body outside by branch pipe(tube);
4, operating personnel's the advancing and working of remote control desilting suction nozzle on the coast or on the ship removed the silt of reservoir bottom deposit piecewise;
5, during the floating thing on removing the reservoir water surface, clear bleaching device is that duck-beak type floats ship clearly, the suction inlet rear portion of floating ship is clearly connecting branch pipe(tube), floats ship clearly and advances to floating thing, opens the drain valve on the trunk line simultaneously, water in the trunk line is let out down rapidly, produce negative pressure in trunk line and the branch pipe(tube), float near the floating thing of ship suction inlet clearly and be sucked into branch pipe(tube), floating thing is under the effect of current pressure reduction, release the reservoir area through trunk line, drain into floating thing treatment plant.
A kind of reservoir comprises from the device that rushes down desilting or float clearly:
Laying a rigidity trunk line in the Reservoir region bottom, the end of trunk line passes reservoir dam, be positioned on the trunk line of reservoir dam outside drain valve is installed, be positioned on the trunk line of reservoir dam and connecting movably branch pipe(tube), at the end of branch pipe(tube) in succession desilting or clear bleaching device.
Accrete clearing device is the desilting suction nozzle, the desilting suction nozzle is that the suction inlet inner chamber of suction nozzle body is connected with branch pipe(tube), the airbag chamber and the compressed air cell that are connected and cooperate with the air compressor air inlet and exhaust piper are being set on the suction nozzle body, the head of suction nozzle body is being provided with by electric motor driven spiral propeller, and illumination, camera are installed on the suction nozzle body.
Clear bleaching device is that duck-beak type floats ship clearly for propeller is being set at the rear portion of hull, at the fore-body of symmetry the suction that has the movable lower lip shell of duck-beak type is being set and is floating import, its outlet is connected with branch pipe(tube), and the floating drum storehouse of the floating drum that hydraulic control is installed is being set respectively on the hull of symmetry.
Certainly rush down desilting with reservoir of the present invention, method of floating clearly and device thereof, when removing reservoir bottom silt, the termination of the branch pipe(tube) that the trunk line that is provided with in the reservoir bottom connects is connecting the desilting suction nozzle, with the desilting suction nozzle pool bottom of dredging operation of submerging, close the drain valve on the trunk line, open water compensating valve, allow the master, after branch pipe(tube) is full of water, close the moisturizing valve, open the drain valve on the trunk line, the water in the trunk line is let out down rapidly, produce negative pressure in trunk line and the branch pipe(tube), start the desilting suction nozzle simultaneously, the spiral propeller of suction nozzle body head rotates at a high speed, and the silt of connate water bottom of the reservior portion is stirred fully or tunnels, and impels silt will enter the suction inlet inner chamber more swimmingly, under the effect of current pressure reduction, discharge outside the dam body along branch pipe(tube) and trunk line.When the suction inlet inner chamber of desilting suction nozzle runs into that silt stops up or driving when blocking spiral propeller, switch angle of rake rotation mode, make the desilting suction nozzle break away from sediment deposit fast, form instantaneous idle running, to alleviate the live load of desilting suction nozzle, switch the angle of rake recovery normal operation that turns to then.Illumination, camera and corresponding sensor are installed on the suction nozzle body, spread out of the water surface, operating on the ship or it is being carried out operation on the bank by the staff by control cables.
The come-up of desilting suction nozzle and dive mainly are by changing the size of air bag in the suction nozzle body, and then change that the size of desilting suction nozzle buoyancy realizes.Set compressed air cell has two effects in the suction nozzle body, the one, the effect of floating drum, compressed air cell is the closed cavity of a rigid structures, and the buoyancy that is produced in water is greater than own wt certainly, and it is used for keeping the suspension of whole desilting suction nozzle at water greater than part.The 2nd, the air that is produced when needed air and exhaust when storing airbag chamber and being full of gas.When the desilting suction nozzle needs dive, start air compressor and deposit the extraction of the air in the air bag in compressed air cell, make the airbag chamber water inlet, the buoyancy of desilting suction nozzle reduces, then the dive of desilting suction nozzle.When the desilting suction nozzle need float, start air compressor or open the valve that compressed air cell leads to air bag, airbag aeration, the water in the part water of airbag chamber or the whole airbag chamber all is extruded, and the buoyancy of desilting suction nozzle increases, then desilting suction nozzle come-up.
The propelling of desilting suction nozzle in water is to cooperate running to realize by the set propeller of suction nozzle body head.When the desilting suction nozzle need move about in water, start angle of rake one or two or all, the also angle of rake direction of rotation of conversion simultaneously, what produced varies in size, the thrust that direction is different.
When floating operation clearly, close the drain valve on the trunk line before the operation, open the moisturizing valve, allow be full of water in main, the branch pipe(tube) after, close the moisturizing valve, the ship that floats clearly that is connected with the end of branch pipe(tube) advances to floating thing, open the drain valve on the trunk line simultaneously, water main, the branch pipe(tube) internal memory is let out down rapidly, cause negative pressure in the pipe, float the ship suction clearly and float near the floating body of import, inhaled (pressure) owing to huge differential water pressures and advance branch pipe(tube), water, floating thing, air three's mixed flow is write out outside the dam body in the lump through trunk line.Float ship clearly and can continuously remove floating thing.Floating clearly in the operation, run into floating thing and come the variation of amount and the variation of floating thing thickness, in time float the draft of ship and the aperture of the movable lower lip shell of control duck-beak type clearly by the floating drum adjustment, adjust the live load that floats ship clearly and enter the mixing ratio of floating ship suction inlet mixture clearly, operation is in all the time removes the duty that floating thing is many, water supply volume is few.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 rushes down the schematic layout pattern of the method device therefor of desilting certainly for reservoir of the present invention;
Fig. 2 rushes down the schematic layout pattern of the method device therefor that floats clearly certainly for reservoir of the present invention;
Fig. 3 is the main TV structure schematic diagram of desilting suction nozzle;
Fig. 4 is the sectional structure schematic diagram of Fig. 3;
Fig. 5 floats the structural representation of ship clearly for duck-beak type;
Fig. 6 is the plan structure schematic diagram of Fig. 5;
Fig. 7 is the A-A sectional structure schematic diagram of Fig. 6;
Fig. 8 is the B-B sectional structure schematic diagram of Fig. 6.
The specific embodiment
A kind of as shown in Figure 1 reservoir comprises the following steps: from the method for rushing down desilting
1, vertically lays a rigidity trunk line 1 along the reservoir area in the bottom of the reservior, the end of trunk line 1 passes reservoir dam 5, be positioned on 1 mouthful of the trunk line of reservoir dam 5 outsides drain valve 6 is installed, be positioned on the trunk line 1 of reservoir dam 5 and connecting movably branch pipe(tube) 2,2 hard and soft having both of branch pipe(tube) movably, at its axis direction certain flexibility is arranged, its tube wall internal diameter has certain rigidity, prevents that the interior negative pressure of hydraulic pressure and pipe is with branch pipe(tube) 2 tube wall compressive strains.The interface of branch pipe(tube) 2 bottoms is connected on the trunk line 1 by the ring-like universal joint 4 with combination bearing and inside and outside water seal, ring-like universal joint 4 main effects are torsion transmission on whole pipe that elimination desilting suction nozzle 3 and branch pipe(tube) 2 are produced when operation, to strengthen the flexibility that branch pipe(tube) 2 moves, prolong the application life of branch pipe(tube) 2.End at branch pipe(tube) 2 is connecting desilting suction nozzle 3, is positioned on the trunk line 1 of dam body 5 inboards water compensating valve 7 is installed;
2, close drain valve 6 on the trunk line 1, open the water compensating valve 7 on the trunk line 1, allow be full of water in main, the branch pipe(tube) 1,2 after, close water compensating valve 7;
3, desilting suction nozzle 3 the is submerged pool bottom of dredging operation, open the drain valve 6 on the trunk line 1, water in the trunk line 1 is let out down rapidly, produce negative pressure in trunk line 1 and the branch pipe(tube) 2, start desilting suction nozzle 3 simultaneously, desilting suction nozzle 3 propeller of rotation at a high speed stirs or tunnels the silt that deposits, and the current pressure reduction in the trunk line 1 makes silt stream enter trunk line 1 and drain into dam body 5 outsides by branch pipe(tube) 2, and the silt of discharging is handled according to different demands and utilization more again;
4, operating personnel's the advancing and working of remote control desilting suction nozzle 3 on the coast or on the ship removed the silt of reservoir bottom deposit piecewise.
A kind of reservoir as shown in Figure 2 comprises the following steps: from rushing down the method for floating clearly
1, the method with the method step 1 of above-mentioned desilting is identical, and different is is connecting the suction inlet that duck-beak type floats ship 8 clearly at the end of branch pipe(tube) 2;
2, identical with the method step 2 of above-mentioned desilting;
3, floating ship 8 clearly advances to floating thing, open the drain valve 6 on the trunk line 1 simultaneously, water in the trunk line 1 is let out down rapidly, produce negative pressure in trunk line 1 and the branch pipe(tube) 2, near the floating thing of suction inlet that floats ship 8 clearly is because current pressure reduction is sucked into branch pipe(tube) 2, release the reservoir area through trunk line 1, drain into floating thing treatment plant 9 and handle.
As shown in Figure 3, Figure 4, front portion in the desilting suction nozzle 3 suction nozzle bodies 11 is being provided with flaring suction inlet, the suction inlet inner chamber 17 that suction inlet connects is connected with branch pipe(tube) 2, the airbag chamber 10 and the compressed air cell 15 that are connected cooperation with air compressor 14 stacks are being set on suction nozzle body 11, the head of suction nozzle body 11 is being provided with the spiral propeller 13 that is driven by motor 16, and spiral propeller 13 is 3.Illumination, camera 12 are installed on suction nozzle body 11.Because desilting suction nozzle 3 operation under water almost carries out in the dark, for ease of the operation scheduling of the staff on the water surface to desilting suction nozzle 3, underwater lighting, underwater camera device on suction nozzle body 11, have been disposed, by control cables the information of desilting suction nozzle 3 working conditions is passed to operation waterborne control room, operating personnel come the underwater operation of dispatch control desilting suction nozzle 3 by display.
As Fig. 5, Fig. 6, Fig. 7, shown in Figure 8, clear bleaching device is that duck-beak type floats ship 8 clearly, duck-beak type floats ship 8 clearly for propeller 21 is being set respectively at hull 18 rear portions of symmetry, in the front portion of symmetrical hull 18 suction is being set and is floating import 22, float the bottom of import 22 then by the movable lower lip shell 23 of the duck-beak type of hydraulic cylinder 24 controls in suction, suction is floated the outlet of import 22 in hull 18 bottoms and is connected with branch pipe(tube) 2, the floating drum storehouse 20 of the floating drum that hydraulic control is installed is being set respectively on the hull 18 of symmetry, operation control room 19 is being set on hull 18.
Reservoir of the present invention also can be used for the dilatation of reservoir from method of rushing down desilting and device thereof.
Claims (5)
1, a kind of reservoir is characterized in that comprising the following steps: from the method for rushing down desilting, floating clearly
1., vertically lay a rigidity trunk line (1) along the reservoir area in the bottom of the reservior, the end of trunk line (1) passes reservoir dam (5), be positioned on outside trunk line (1) mouth of reservoir dam (5) drain valve (6) is installed, be positioned on the trunk line (1) of reservoir dam (5) and connecting movably branch pipe(tube) (2), end at branch pipe(tube) (2) is connecting desilting or clear bleaching device, is positioned on the inboard trunk line (1) of dam body (5) water compensating valve (7) is installed;
2., close the drain valve (6) on the trunk line (1), open the water compensating valve (7) on the trunk line (1), allow be full of water in main, the branch pipe(tube) (1,2) after, close water compensating valve (7);
3., when removing water-bed silt, Accrete clearing device is desilting suction nozzle (3), with desilting suction nozzle (3) the pool bottom of dredging operation of submerging, open the drain valve (6) on the trunk line (1), water in the trunk line (1) is let out down rapidly, produce negative pressure in trunk line (1) and the branch pipe(tube) (2), start desilting suction nozzle (3) simultaneously, desilting suction nozzle (3) propeller of rotation at a high speed stirs or tunnels the silt that deposits, and the current pressure reduction in the trunk line (1) makes silt stream enter trunk line (1) and drain into dam body (5) outside by branch pipe(tube) (2);
4., operating personnel's the advancing and working of remote control desilting suction nozzle (3) on the coast or on the ship, the silt of reservoir bottom deposit is removed piecewise;
5., during the floating thing on removing the reservoir water surface, clear bleaching device is that duck-beak type floats ship (8) clearly, the suction inlet rear portion of floating ship (8) is clearly connecting branch pipe(tube) (2), floating ship (8) clearly advances to floating thing, open the drain valve (6) on the trunk line (1) simultaneously, water in the trunk line (1) is let out down rapidly, produce negative pressure in trunk line (1) and the branch pipe(tube) (2), float near the floating thing of ship (8) suction inlet clearly and be sucked into branch pipe(tube) (2), floating thing is under the effect of current pressure reduction, release the reservoir area through trunk line (1), drain into floating thing treatment plant (9).
2, be used to realize the device of the method for claim 1, it is characterized in that: in the front portion in the suction nozzle body 11 of desilting suction nozzle 3 flaring suction inlet is being set, the suction inlet inner chamber (17) that suction inlet connects is connected with branch pipe(tube) (2), the airbag chamber (10) and the compressed air cell (15) that are connected cooperation with air compressor (14) air inlet and exhaust piper are being set on suction nozzle body (11), the head of suction nozzle body (11) is being provided with the spiral propeller (13) that is driven by motor (16), and illumination, camera (12) are installed on suction nozzle body (11).
3, device according to claim 2 is characterized in that: spiral propeller (13) is 3.
4, be used to realize the device of the method for claim 1, it is characterized in that: clear bleaching device is that duck-beak type floats ship (8) clearly, duck-beak type floats ship (8) clearly for propeller (21) is being set respectively at hull (18) rear portion of symmetry, in the front portion of symmetrical hull (18) suction is being set and is floating import (22), float the lower hinge of import (22) by the movable lower lip shell (23) of the duck-beak type of hydraulic cylinder (24) control in suction, suction is floated the outlet of import (22) in hull (18) bottom and is connected with branch pipe(tube) (2), the floating drum storehouse (20) of the floating drum that hydraulic control is installed is being set respectively on the hull (18) of symmetry, operation control room (19) is being set on hull (18).
5, be used to realize the device of the method for claim 1, it is characterized in that: the interface of branch pipe(tube) (2) bottom is connected on the trunk line (1) by the ring-like universal joint (4) with combination bearing and inside and outside water seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101009423A CN1307350C (en) | 2004-12-10 | 2004-12-10 | Self-desilting and dredging method and apparatus for reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101009423A CN1307350C (en) | 2004-12-10 | 2004-12-10 | Self-desilting and dredging method and apparatus for reservoir |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1614161A true CN1614161A (en) | 2005-05-11 |
| CN1307350C CN1307350C (en) | 2007-03-28 |
Family
ID=34766723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004101009423A Expired - Fee Related CN1307350C (en) | 2004-12-10 | 2004-12-10 | Self-desilting and dredging method and apparatus for reservoir |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1307350C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693243B (en) * | 2009-09-30 | 2011-06-15 | 重庆大学 | Dredging system of sewage pipeline with large-pipe diameter |
| CN103850218A (en) * | 2012-11-28 | 2014-06-11 | 白恩庆 | Scheme for clearing away and using sludge |
| CN106087848A (en) * | 2016-07-22 | 2016-11-09 | 王兴奎 | A kind of multi-stage pipeline automatic sand discharging device of crotch structure |
| CN106436803A (en) * | 2016-10-21 | 2017-02-22 | 长江水利委员会长江科学院 | Underwater covered canal silt efficient transport equipment |
| CN106812171A (en) * | 2017-01-20 | 2017-06-09 | 黄河水利委员会黄河水利科学研究院 | The portable three floating bodies silt extraction system of medium and small reservoirs |
| CN108532563A (en) * | 2018-04-16 | 2018-09-14 | 浙江水利水电学院 | The remote sand flushing system of reservoir |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2375395A1 (en) * | 1976-11-12 | 1978-07-21 | Sainrapt Et Brice | Continuous removal of deposits behind dam - has mud pump covering area and discharging diluted sediment through drain outlet |
| FR2594460B1 (en) * | 1986-02-14 | 1989-12-29 | Lapipe Andre | PROCESS FOR DEWATERING ARTIFICIAL LAKES |
| CN1029489C (en) * | 1991-03-21 | 1995-08-09 | 饶发忠 | Water-energy mud-removing system in reservoir |
| CN2299896Y (en) * | 1995-07-14 | 1998-12-09 | 曾民先 | Movable silt sucker for reservoir and river channel |
| CN1189559A (en) * | 1997-01-31 | 1998-08-05 | 张善仿 | Tech. for clearing reservoir sedimentation by pipeline delivery and digging bar |
| CN1201095A (en) * | 1997-05-30 | 1998-12-09 | 陈启星 | Structure for hydropower station preventing reservoir from silting |
| JP3898295B2 (en) * | 1997-07-28 | 2007-03-28 | 株式会社吉野工業所 | Stick-shaped cosmetic delivery container |
| JPH1146515A (en) * | 1997-07-30 | 1999-02-23 | Kenzo Ono | Method for collecting sedimentation soil of dam lake as soil for agricultural use and apparatus therefor |
| CN2343209Y (en) * | 1998-06-19 | 1999-10-13 | 侯家瑞 | Remote-controlled submersible dredging vehicle |
| CN1438388A (en) * | 2003-01-16 | 2003-08-27 | 高中明 | Water-pressure pipe sand-discharging apparatus |
-
2004
- 2004-12-10 CN CNB2004101009423A patent/CN1307350C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693243B (en) * | 2009-09-30 | 2011-06-15 | 重庆大学 | Dredging system of sewage pipeline with large-pipe diameter |
| CN103850218A (en) * | 2012-11-28 | 2014-06-11 | 白恩庆 | Scheme for clearing away and using sludge |
| CN103850218B (en) * | 2012-11-28 | 2016-06-01 | 白恩庆 | Desilting mud Application way |
| CN106087848A (en) * | 2016-07-22 | 2016-11-09 | 王兴奎 | A kind of multi-stage pipeline automatic sand discharging device of crotch structure |
| CN106087848B (en) * | 2016-07-22 | 2018-06-29 | 王兴奎 | A kind of multi-stage pipeline automatic sand discharging device of crotch structure |
| CN106436803A (en) * | 2016-10-21 | 2017-02-22 | 长江水利委员会长江科学院 | Underwater covered canal silt efficient transport equipment |
| CN106436803B (en) * | 2016-10-21 | 2018-07-31 | 长江水利委员会长江科学院 | The efficiently defeated shifting equipment of underwater covered canal silt |
| CN106812171A (en) * | 2017-01-20 | 2017-06-09 | 黄河水利委员会黄河水利科学研究院 | The portable three floating bodies silt extraction system of medium and small reservoirs |
| CN106812171B (en) * | 2017-01-20 | 2022-09-23 | 黄河水利委员会黄河水利科学研究院 | Portable three-floating-body silt extraction system for small and medium-sized reservoirs |
| CN108532563A (en) * | 2018-04-16 | 2018-09-14 | 浙江水利水电学院 | The remote sand flushing system of reservoir |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1307350C (en) | 2007-03-28 |
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