CN1920191A - Natural rainwater impounding method and impounded basin - Google Patents

Abstract

The invention relates to a method for storing natural rain and relative water pool, wherein it is characterized in that: building water pool underground to connect the ground discharge channels; the water pool is divided into inner pool and outer pool, while the bottom and side walls of inner pool will not leak water, and the bottom and side walls of outer pool have leakage holes; the side wall of outer wall is high than the side wall of inner pool; the ground discharge channel is through into the inner pool. Said water pool can be in any shape and size; the water pool and ground are arranged with water level detector and pump. The invention can release the water resource lack.

Description

Natural rainfall retaining method and reservoir

Technical field: the invention belongs to rainwater and store technical field, relate to the retaining method and the reservoir of natural rainfall.

Background technology: at present, urban water consumption is increasing, and current are then more and more littler on the ground, and groundwater table is also more and more lower.According to news from Xinhua News Agency: because for a long time to phreatic pernicious over-extraction, China has formed more than 100 of local ground watering cone of depression at present, area has reached 150,000 square kilometres, and wherein the groundwater table of the nearly 70,000 square kilometres of areas in the North China Plain is lower than the sea level.Statistics shows that existing 46 cities, the whole nation are owing to the land subsidence problem appears in excessive exploitation underground water at present.Be not difficult to find out the severe situation of China's water resource thus.The most of city of China all belongs to the lack of water city, especially in the north.Human progress, the development of society, water is indispensable resource.At present China is implementing the strategy of sustainable development, this wherein water be vital.Prior art, the imbalance between supply and demand that people solve water mainly is conceived in the recycling of using water wisely and water, and that yes is justifiable for this.But, even if these ways are all done finely, they are the just consumption of water and do not have replenishing of water still.Certainly, for certain or some cities, " diverting Luanhe water to Tianjin " might as well, " south water to north " might as well, although can solve water shortage problem at the moment, also cure the symptoms, not the disease.Because as a whole, though the water resource in this place obtains having replenished, the water resource on those ground is quickened to have consumed.Take the whole country into account, basically, the still just consumption of water and do not have replenishing of water.It is considered herein that and treat water resources problems, light " throttling " is not all right, also will " increase income ".What is meant by " increasing income "? where is " source " head? the problem that this present invention just studied.The tradition thinking think: tellurian water is that vouchsafe the God, and manpower is non-renewable, urban water shortage be consumption excessive due to.The present invention does not deny above-mentioned viewpoint, and still, the present invention thinks also that simultaneously another main cause of urban water shortage also is the wanton destruction of people to the municipal water ecological environment.Can find that the entire city ground surface is nearly all covered by thick duricrust as long as have a look at the looks of city the earth " skin ", cement everywhere, asphalt floor are close to the respiratory function of the city the earth that suffocated.River, only gutter is a purpose can get rid of city ponding rapidly also.Therefore the urban groundwater storehouse unfeelingly separates (be not absolute certainly, the city still has the small part greenery patches to communicate with underground infiltration) with itself and ground water as the head-shield umbrella.Like this, lack replenishing of water on the ground, underground water is to use fewer and fewer naturally, must cause the urban groundwater position to descend in the course of time.

Summary of the invention: the objective of the invention is, at the problem of urban water shortage and groundwater table decreasing, provide a kind of natural rainfall retaining method and reservoir, so as to replenishing city water resource, alleviate the urban water use tense situation, and even provide a new way whole groundwater resources are full.Technical solution of the present invention is: a kind of natural rainfall retaining method, it is characterized in that: the underground reservoir of setting up in the city, reservoir is communicated with the ground drain, reservoir can singlely exist, also but several are linked to be network by pipeline, reservoir can be suited measures to local conditions, and builds up different shape and scale; Reservoir and ground thereof are provided with Level monitor and water plug.A kind of natural rainfall reservoir, it is underground to be built in the city, it is characterized in that: reservoir is divided into Nei Chi and outer pond double-layer structure, its Nei Chi bottom surface and on every side sidewall all do not seep water, its Wai Chi bottom surface and on every side sidewall be equipped with the infiltration hole, pond sidewall in its outer pond sidewall is higher than, drain feeds interior pond on the ground.In order to network, the sidewall in pond is provided with connector outside.In order to quicken infiltration, the bottom surface in pond is to having negative well outside.Here said reservoir can be suited measures to local conditions, and builds up different shape and scale.

Thinking of the present invention is, utilizes underground conservation pool that natural rainfall is collected and stores, and the one, be used for replenishing city productive life water, the 2nd, be used for remedying the groundwater resources deficiency.The operating principle of its reservoir is: natural rainfall flows into pond in the reservoir by drain on the ground, will spill into outer pond when interior pond rainwater holds naturally after full, and go into the earth by the orifice flow that seeps water.When rainwater in the pond is very full, also can quicken infiltration by the negative well of outer pond sidewall and bottom surface.In a word, this reservoir can store the usefulness of fixed water volume in order to productive life by interior pond, and to greatest extent the rainwater on ground is dredged groundwater reservoir by outer pond.Natural rainfall is reclaimed, avoid running away in vain.

Realistic meaning of the present invention is: in the past, the city rainfall, on the one hand owing to hardened ground make rainwater can't seepage in underground, the rainwater that accumulates is on the other hand all entered rivers fast by various drainages.The drawback of bringing therefrom is: on the one hand natural to drop to rainwater on the ground of no help in the city productive life, and of no help in groundwater table, groundwater table can only be more and more lower; The rainwater that enters rivers on the other hand causes tornado, makes river level more and more higher, even causes flood.And after having set up the natural rainfall water storage system, the city has rainfall again, on the one hand, rainwater will flow into underground conservation pool along the ground drain, when rainwater is very full, reservoir not only can store outside enough water yields, but also can make rainwater leak into the earth rapidly and groundwater table is improved.On the other hand, reduced the discharging of rainwater, alleviated the water capacity pressure of rivers, reduced and avoid flood to take place rivers.In view of this, the water that the present invention opens the God rainfall is " source ", mends urban water use and his like, is to achieve many things at one stroke.

Far-reaching significance of the present invention is: the underground natural rainfall water storage system of setting up in the city, the Sustainable Development that can be the city is made contributions.Because the God rainfall is the natural law, the moisture of earth surface can only replenish by rainwater, removes this and does not have his road.If city management will not be recycled this water of being bestowed by heaven and be made it irrevocably lost, ground, city and underground water can only finally be tending towards exhausted more with few more so.If city management is recycled this, so just can make this water of being bestowed by heaven return the earth, allow urban ground and underground water obtain supply, the recycling of using water wisely and water in addition so just can realize keeping to greatest extent the ecological homeostasis of municipal water.Thereby provide safeguard for the water demand of urban development.The present invention is a great system engineering, and its enforcement depends on government interference, does not have what obstacle technically, but needs certain fund input.

Description of drawings: accompanying drawing is the structural representation of reservoir of the present invention.

The specific embodiment: the present invention is elaborated below in conjunction with drawings and Examples.

As shown in the figure, underground conservation pool provided by the invention is divided into Nei Chi and outer pond double-layer structure, in it 2 bottom surfaces, pond and on every side sidewall all do not seep water, its 3 bottom surfaces, outer pond and on every side sidewall be equipped with the hole 4 of seeping water, pond 2 sidewalls in its outer pond 3 sidewalls are higher than, pond 2 in drain 6 feeds on the ground.In order to make a plurality of reservoirs get in touch with into net, the sidewall in pond 3 is provided with connector 5 outside; In order to quicken the seepage of water, the bottom surface in pond 3 is to having negative well 1 outside.In addition, on reservoir and ground, be provided with Level monitor and water plug, so that water level situation and to Chi Shui extraction and application in addition in the claire.

Embodiment is an example with a certain city, sets up the natural rainfall water storage system.Predict a year recyclable amount of rainfall according to the average annual amount of precipitation in city that weather information provides; According to the recyclable amount of rainfall of urban size prediction per unit area, should build reservoir volume and number according to the recyclable amount of rainfall design in unit area zone.According to the actual layout of buildings of certain specific region or unit distributes or actual conditions design such as water should be built reservoir place, number and scale.Or the like, through a series of careful investigation, planning and calculating, at last the reservoir of desiring to build is fulfilled singly.City authorities can set up special mechanism to establish, and also can urge relevant department or unit self-built.Concrete constructure scheme can adopt foregoing reservoir style.Such reservoir can be suited measures to local conditions, and builds up various forms and scale, comprising pond shapes such as circle, ellipse, semicircle, triangle, rectangle, square, polygons, and 10m ³, 50m ³, 100m ³, 200m ³Etc. changeable pool volume.Also will solve simultaneously needs networking wherein, how links up with ground lake water, how with practical problem such as the supporting use of ground facility.System builds, and can adopt the unified planning unified management, also can adopt the unified planning Decentralization, allow self-built department or the unit water of fetching water voluntarily such as regulation, some reservoir that too disperses is only done retaining, let alone seepage, replenish underground water, and measure such as be not used on the ground.Like this, statistical informations such as this city can be according to this city rainfall then, store, use draw the basic condition that this city reclaims rainwater then, replenishes the productive life water and remedy groundwater resources, and economy wherein and social benefit are also just apparent.

If the present invention applies in the whole nation, so the water resources situation one of alleviating China is produced immeasurable techno-economic effect surely.

Claims (4)

1, a kind of natural rainfall retaining method is characterized in that: the underground reservoir of setting up in the city, and reservoir is communicated with the ground drain; Reservoir can singlely exist, but also several are linked to be network by pipeline; Reservoir can be suited measures to local conditions, and builds up different shape and scale; Reservoir and ground thereof are provided with Level monitor and water plug.

2, a kind of natural rainfall reservoir, it is underground to be built in the city, it is characterized in that: reservoir is divided into interior pond (2) and outer pond (3) double-layer structure, in it (2) bottom surface, pond and on every side sidewall all do not seep water, its (3) bottom surface, outer pond and on every side sidewall be equipped with the infiltration hole (4), its outer pond (3) sidewall is higher than interior pond (2) sidewall, pond (2) in drain (6) feeds on the ground.

3, according to the natural rainfall reservoir of claim 2, it is characterized in that: the sidewall of pond (3) is provided with connector (5) outside.

4, according to the natural rainfall reservoir of claim 2 or 3, it is characterized in that: the bottom surface of pond (3) is to having negative well (1) outside.