CN1182817A

CN1182817A - Method for quick harnessing wide river course silted by mud and sand

Info

Publication number: CN1182817A
Application number: CN 96120568
Authority: CN
Inventors: 冯灿周
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-19
Filing date: 1996-11-19
Publication date: 1998-05-27

Abstract

The present invention discloses a method for rapid-correction of serious board channel sediment accumulation. Said invented method is applicable to correction of serious channel sedimentation, in particular it is specially suitable for correction of board channel sedimentation of midstream of the Yellow River. Said invention is characterized by building low-head debris dam on the board channel having need of correction, so that it can save investment, quickly obtain result, and its building time is rapid, effect is good, and can solve the sediment control problem of the Sanmenxia Water Reservoir, also is applicable to other similar board river channel.

Description

A kind of method of quick harnessing wide river course silted by mud and sand

The invention discloses a kind of method of quick harnessing wide river course silted by mud and sand, this method is applicable to administers the serious river course of alluvial, the silt of the middle reaches wide river course that is particularly suitable for bringing the Yellow River under control.

At present, the silted by mud and sand that many river courses are arranged both at home and abroad, but up to now, still there is not a kind of method that can administer silt fast to occur, promptly do not find a kind of can making to contain the Shahe water clear method of change fast so far, for example:, do not find to make Sanmenxia Reservoir come water to become clear method through the research in 32 years yet, so that have to allow silt pass reservoir input downstream, flood season can not reservoir impoundment power generation.Because river has a large amount of silts, the downstream, the Yellow River has to utilize the water of 200 billion cubic meters to come sand surfing to go into the sea.Because it is husky that the downstream is used for row to the water of 200 billion cubic meters, causes the downstream serious water shortage, and arid takes place, and drought occurs, make the Yellow River cutout, all these problems all are to come sand many owing to the Sanmenxia Reservoir upstream, river is unclear to be caused.

The method that the purpose of this invention is to provide a kind of quick harnessing wide river course silted by mud and sand.

The object of the present invention is achieved like this: a kind of method of quick harnessing wide river course silted by mud and sand, it is to build the low water head check dam on the wide river course that needs are administered.

Advantage of the present invention is:

1, because the present invention has adopted the low water head check dam, reduced investment, building time be fast, overcome that investment is gone up, on the duration, the many difficulties on the dam site condition;

2, because technical scheme of the present invention has sediment trapping of beach, Zhong Shui river course secondary sediment trapping, twice sediment trapping can make river become clear;

Though 3, the beach ridge in the technical scheme of the present invention is long, it is built with riverbed mud, gathers materials on the spot, and has saved a large amount of expenses of building;

4, because technical scheme of the present invention is to adopt the directional blasting method of building a dam at the dry river groove, blow the river course fill of building a dam of fetching earth, the saving of labor, material-saving, the duration is fast; But 5000 cubic metres of soil of explosive explosion per ton are saved a large amount of manpowers;

5, the water that uses technical scheme of the present invention that the Sanmenxia Reservoir of China is entered all is clear water, can solve the silt alluvial problem that China fails to separate inferior Sanmenxia Reservoir for a long time, builds up then, takes effect then;

In case 6, have only clear water to enter Sanmenxia Reservoir then the huge of economic benefit that obtained will be unable to estimate, because the area that is benefited will exceed the Yellow River and Huai He River sea alluvial fan, all industries all are benefited, and the offspring gets rich, solved the problem of harnessing the Yellow River in thousand, all be a quantum jump in history, in the world, big contribution;

1. after using technical scheme of the present invention to build up the step check dam, one time sedimentation reservoir can progressively deposit the beach that can plant crops.

Fig. 1 is a technical scheme schematic diagram of the present invention.

The present invention is further illustrated below in conjunction with accompanying drawing:

Embodiment 1:

A kind of method of quick harnessing wide river course silted by mud and sand, it is to build the low water head check dam on the river course that needs are administered.The low water head check dam is made up of part flow arrangement 1, suitable dike 2, beach dam 3, barrage 4, fish mouth type part flow arrangement 1 places river course central authorities, the opening that corresponding fish chews formula part flow arrangement 1 has suitable dike 2, and barrage 4 will be blocked along the downstream of dike 3, and barrage 4 both sides have been beach dams.

The suitable dike 2 that river course central authorities build is divided into three strands with the wide river course of original silted by mud and sand, and one is secondary sedimentation reservoir 5 for the centre, and two strands of both sides is a sedimentation reservoir 6.

Can accomplish with riverbed sludge along dike 2, the length of suitable dike 2 can be decided according to the actual requirements; Downstream along a desilting zone outside the dike 2 builds up beach dam 3 with mud; The downstream of secondary desilting zone builds up barrage 4 with concrete, and barrage 4 is provided with ship lock, flood spillway and power station.

Operating principle and the fish on the Dujiang weir, China Sichuan that fish chews formula part flow arrangement 1 chew the branch water together, and the upper reaches comes water through the effect that fish chews formula part flow arrangement 1, and river is divided into two strands, flows to a sedimentation reservoir 6 of both sides respectively; Fish chews the herringbone splitter wall that formula part flow arrangement 2 constitutes with the wire basket of filling stone.

The river that the upstream is come is chewed formula part flow arrangement 2 places to fish and is divided into two strands, about respectively one, all to sedimentation reservoir 6 diffluences, be obstructed during to beach dam 3, flow velocity reduces to zero, loses the husky ability of being with, silt satisfies promptly, and this is a desilting, at this moment, river is hindered, and water level gushes height, when water level reaches with same when high along dike 2, promptly flow into secondary sedimentation reservoir 5 automatically along 2 on dike, carried out the secondary desilting here, become substantially clearly, let out the downstream 4 times through barrage through the river after the above-mentioned desilting process.

Technical solutions according to the invention can be set up a plurality of on the wide river course that need are administered, and form the step check dam, constitute step reservoir, and clear water sediment trapping effect and effect will be more remarkable.

Claims

1, a kind of method of quick harnessing wide river course silted by mud and sand is characterized in that: it is to build the low water head check dam on the wide river course that needs are administered.