CN1336464A

CN1336464A - Environmental protection type multipurpose flood discharging and draining riverbed

Info

Publication number: CN1336464A
Application number: CN 00115918
Authority: CN
Inventors: 丁权
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-28
Filing date: 2000-07-28
Publication date: 2002-02-20
Anticipated expiration: 2020-07-28
Also published as: CN1193137C

Abstract

The invented environmental protection type multipurpose flood passing, water draining riverbed is characterized in that silt reservior is constructed at the out of flood passing, water draining riverbed, the reservior bottom is parallel to horizontal line. It can effectively stop river sand flow into revers, and use idle region to develop aquaculture and use for water conservation.

Description

The logical flood of environmental protection type multipurpose, draining riverbed

The present invention relates to the transformation in logical flood, draining riverbed.

Mountain torrents are in the way that flows to river, lake, naturally formed many water channels, riverbed, the riverbed is substantially anhydrous during no mountain torrents, but must have mountain torrents to flow through among 1 year, therefore among these region areas 1 year except that several days times of logical flood, remaining 11 wheat harvesting period time is all idle.For example, beg trunk river in the Qichun County, river system Hubei Province, 1973 square kilometres of drainage areas, stream passes through the whole county, injects the Changjiang river from North-East Bound southwest, and it is undertaking the huge important task of county draining, logical flood.Thereby, for every economic work of this county and the life security of whole county people's property have been brought into play bigger effect.

But the present situation of Qi He and original manner of execution still exist some very serious drawback problems.One, a large amount of river sand are gone into the Changjiang river with stream, and this certainly will quicken, increase the weight of sand and hold the appearance of carrying the overburden problem, as what this year, TV media was reported: " harbour, China one city causes the navigation channel to block because of serious long-pending sand ...." this is the prelude and the prominent example of this type of problem.Its two because the dam, river in Qi He and all rivers all is that the higher sand of sand content builds up, very easily destroyed by rush of water by flood, it is reported that human, financial, and material resources power that pay every year for it in the whole county and the economic loss that directly causes because of flood just reach hundreds of thousands unit.As: 1999 years only town of green stone with regard to aiming at flood prevention surplus in the of expensive 80,000 yuan.They are three years old, more worth prompting be, present Qi He is a use amount with the real value in its river, only have only several days so short times, that is to say, among 1 year, except that several days times of logical flood, remaining 11 wheat harvesting period time, the riverbed of several ten thousand surplus mus is all leaving unused basically in vain because of displacement is minimum.

Provisions and demand that " one fen field, San Fenshan, Liu Fenshui " mankind give only according to this limited and few land surface are far from being enough certainly.So, the advocating and appealing of " will treasure every inch of land ", just known dawn already.So how scientifically to carry out and more can fully, reasonably develop this piece article of this six fens water surface areas or resource, very far-reaching significance and realistic meaning should be arranged.The successful construction of China's Gezhou Dam, the ability of nature remodeling ", and more effectively illustrated in the water area resource of our present usefulness, still have certain resource or water surface area, also rational exploitation and utilization more fully.So the abundant rational exploitation and utilization in the similar riverbed of begging the river is no exception.Certainly, prerequisite is must be on the basis of the main stem important task that guarantee not influence logical flood, draining, further rationally, develop and make full use of it.

Transform this type of riverbed scientifically and rationally, can not only change and solve aforesaid several drawback phenomenon effectively, also can surpass the ground retaining of individual event consumption, water transfer, the drought loss that is beneficial to solve or alleviates locality along the line is the financial burden of drought resisting, and more can make it to become one have fairly large fresh fish intensive culture industry and serial attached industry common expand efficiently, the riverbed industrialization engineering of characteristic.

The object of the present invention is to provide the technical scheme in the logical flood of a kind of environmental protection type multipurpose, draining riverbed, it can effectively hinder the river sand flow and go into rivers, utilizes idle region developing water to produce, and the usefulness of doing water conservancy.

Technical scheme of the present invention is: the logical flood of environmental protection type multipurpose, draining riverbed (river), it is characterized in that getting sand downwards and building the sand setting reservoir in the exit in logical flood, draining riverbed, and parallel at the bottom of the pond with horizon.

As above-mentioned riverbed, it is characterized in that building on the preceding riverbed of sand setting reservoir retaining sand blocking dam across the riverbed, upwards increase on the riverbank on sand setting reservoir both sides, and the riverbank height is higher than the retaining sand blocking dam.

Aforesaid riverbed is characterized in that the pond deeply greater than 4 meters, and the retaining degree of depth is a 2-9 rice, and sand setting reservoir length is more than 1 kilometer.

Aforesaid riverbed is characterized in that being provided with in the sand setting reservoir 1-4 little sand blocking dam, and little sand blocking dam is divided into 2-6 sand setting zone with the sand setting reservoir.

Aforesaid riverbed, the gradient that it is characterized in that along the river bed has the sand setting reservoir more than two.

Logical flood of the present invention, draining riverbed, owing to have the sand setting reservoir of horizontal base in the exit, sandstone is deposited in do not allow it enter main river and rivers and lakes (such as the Changjiang river) in the reservoir, reduce the long-pending sand in rivers and lakes, the sand construction of getting in whole main river, rivers and lakes in the past is limited in each settling zone, river; Duck etc. can be breeded fish, be supported in the region of leaving unused before utilizing in reservoir, can the water transfer drought resisting when arid.

Fig. 1, sand setting reservoir position view.Wherein, 1 the Changjiang river, 2 main rivers, 3 logical floods, draining riverbed (river), 4 sand setting reservoirs.

Fig. 2, the embodiments of the invention structural representation.Wherein, 5 riverbanks, 6 riverbeds, at the bottom of the 7 sand setting reservoirs, the H pond is dark, and the L pond is long.

Fig. 3, the second embodiment of the invention structural representation.Wherein, 8 increase bank, 9 retaining sand blocking dams, 10 little sand blocking dams.

Fig. 4, the third embodiment of the invention structural representation.Wherein, 11 first sand setting reservoirs, 12 second sand setting reservoirs, 13 second increase bank.

Embodiments of the invention are built sand setting reservoir 4 in each river 3 outlet, as shown in Figure 1 and Figure 2 so that focus on sandstone.7 are basically parallel to horizon at the bottom of the pond, make it not become at the bottom of the slope, we are referred to as " par formula reservoir ", can avoid the mountain torrents impulsion to be deposited in sandstone in the reservoir so on the one hand, be convenient to culture aquatic products on the other hand, total water area is not reduced because of the water yield.The dark H in pond should guarantee 2.5 meters the depth of water, in order to avoid flood is rolled the layer of sand that has avaled, adds the degree of depth that sand setting accounts for, and the dark H in pond should be advisable more than 4m; The waters length L should be advisable with the 2-5 kilometer more than 1 kilometer, and the sand setting effect can weaken greatly if L is too short.

Embodiment one adopts and gets sand method construction sand setting reservoir entirely, also can adopt scheme as shown in Figure 3, by increasing bank 8, retaining sand blocking dam 9 and getting sand downwards the dark H in pond is reached more than the 4m.Little sand blocking dam 10 shown in Figure 3 is divided into 4 settling zones with the sand setting reservoir, and the sand classifying of different sizes is deposited in 4 settling zones.

The third embodiment of the present invention as shown in Figure 4.Along the river the bed steps degree has two sand setting reservoirs 11,12 up and down, can water transfer on demand between 11,12, and to satisfy the needs of aquaculture to the water yield.

Good effect of the present invention is applied as example with the Qi He in Hubei Province, its concrete effect can reach following 3 points: 1, further standard yellow ground management and processing, manage market, that is: the getting the sand engineering of whole riverbed of the former practice is limited in each settling zone, river sand setting and gets sand; 2, the source because of sandstone all is controlled in each riverbed, and major river bed then forms the standard water reserve that disturb in no sand source, because the control of its water level standard and the science of moving back, add pipe duct are freely settled.So whole riverbed (main a, riverbed) just can form the best base that " high-yield mode " breeds fish.In " high-yield mode " now realized in that summed up in practice by the luxuriant old professor of Central China Xiao Yi of marine products institute of agricultural college and Hubei Province than 2500 jin of/mu calculating of low mode: the Qichun County 50,000 mu of " Qi He " riverbed years can produce 1.25 hundred million jin of fresh fish, the output value: 4.61 hundred million yuan, can realize the equal output value, output that the 140000 mu of fresh fish in the whole county are cultured, and the 2.45 hundred million yuan＜notes of profit of can making profits in year: do not comprise tax, riverbed rent and personnel's wage 〉; 3, it can also provide drought resisting water and the water source that does not consume the cost that draws water along the line for the riverbed, thereby can protect the certain effect of summer harvest performance for coping with agriculture drought, again with regard to " Qi He " riverbed, except that the water supply volume of breeding fish, the water source amount of cubic meter surplus also can many retainings 100,000,000, and can call retaining naturally.

Claims

1, the logical flood of environmental protection type multipurpose, draining riverbed (river) is characterized in that the exit on logical flood, draining riverbed, get sand downwards and build the sand setting reservoir, and be parallel with horizon at the bottom of the pond.

2, riverbed as claimed in claim 1 is characterized in that building on the preceding riverbed of sand setting reservoir the retaining sand blocking dam across the riverbed, and upwards increase on the riverbank on sand setting reservoir both sides, and the riverbank height is higher than the retaining sand blocking dam.

3, as claim 1,2 described riverbeds, it is characterized in that the pond deeply greater than 4 meters, the retaining degree of depth is a 2-9 rice, sand setting reservoir length is more than 1 kilometer.

4, as claim 1,2 described riverbeds, it is characterized in that being provided with in the sand setting reservoir 1-4 little sand blocking dam, little sand blocking dam is divided into 2-6 sand setting zone with the sand setting reservoir.

5, riverbed as claimed in claim 3 is characterized in that being provided with in the sand setting reservoir 1-4 little sand blocking dam, and little sand blocking dam is divided into 2-6 sand setting zone with the sand setting reservoir.

6, as claim 1,2,5 described riverbeds, the gradient that it is characterized in that heavy shelves has the sand setting reservoir more than two.

7, riverbed as claimed in claim 3, the gradient that it is characterized in that heavy shelves has the sand setting reservoir more than two.

8, riverbed as claimed in claim 4, the gradient that it is characterized in that heavy shelves has the sand setting reservoir more than two.