CN1034025C

CN1034025C - Weeping well with natural filter bed

Info

Publication number: CN1034025C
Application number: CN 93110953
Authority: CN
Inventors: 陈台智; 韩宗珊
Original assignee: Geological Centre Of Chngdu Hydrogeological Engineering Ministry Of Geology And
Current assignee: Geological Centre Of Chngdu Hydrogeological Engineering Ministry Of Geology And
Priority date: 1993-03-13
Filing date: 1993-03-13
Publication date: 1997-02-12
Anticipated expiration: 2013-03-13
Also published as: CN1092042A

Abstract

The present invention is composed of an underground chamber, a river bottom tunnel, a pilot shaft, a vertical shaft and a pumping station, wherein the underground chamber is positioned on the river bottom stratum, and the wall of the underground chamber is provided with seepage holes; through the seepage holes, a casing tube extends in the radiation direction into the gravel layer of a natural filtering bed at the river bottom; the top end of the casing tube is provided with a filter tube of which the top end is enclosed; the tube wall is provided with holes or gaps, and the filter tube is positioned at the middle part and the lower part of the gravel layer. The present invention takes water from a submerged layer on the bottom of a river bed, and both the water quality and the water quantity are not directly influenced by river water; the present invention has the advantages of stable water taking quantity, cleanness and low construction cost, and replaces the traditional water taking well.

Description

Weeping well with natural filter bed

The present invention and water intaking, catchment or the device or the method for water distribution relevant, especially with the Weeping well with natural filter bed water intaking, it is relevant to supply water.

Traditional water intake well such as motor-pumped well, big well, infitration galleries, the width of cloth are penetrated well or the like and are all destroyed the filter bed structure inevitably, and the filter bed upper and lower part is communicated with, and all contaminations matter has enlarged and has polluted dizzy scope constantly to the deep migration, and river bed water water quality is destroyed.Traditional influent well is arranged on ground, occupies cultivated land, and destroys ecological environment, is easy to be subjected to flood, the destruction of disasters such as silt, and its output is subjected to having a strong impact on of dry season.

The purpose of this invention is to provide a kind of ecological environment balance of not destroying, not influenced by disaster, it is stable to obtain the water yield, cleaning, the Weeping well with natural filter bed that construction costs is cheap.

As everyone knows: the sand gravel layer decapacitation of riverbed surface is filtered into the surface water of muddiness outside the good clear water of transparency, and purifies surface water quality by the series of physical chemical action.Facts have proved that topped mud film in the sandy gravel surface is to remove the desirable biological filter membrane that ammonia is denitrogenated.Mankind's activity is discharged into fluviatic all contaminations matter, big portion is by natural filter bed absorption, form to pollute and swoon, diffusion or disperse migration reaches balance again, studies show that, the river that contains all contaminations matter is by the dissolving of filter bed in filter process, and effects such as absorption have reduced the concentration of many toxic substances effectively.In natural filter bed middle and lower part, underground river bed water cleans.Utilize the film formed natural filter bed filtration of topped sandy gravel layer of rivers riverbed surface and mud, surface water is changed into underground river bed water, some leak sources are set, constitute leakage face from the water table aquifer base plate, form the current of big flow, it is design of the present invention that infiltration stream is taken out ground.

The present invention is by chamber, with tunnel at the bottom of the river of chamber and pilot shaft connection, vertical shaft, pumping plant composition.Chamber is positioned at riverbed sub-surface at the bottom of the river.The chamber wall has the seepage flow hole, and sleeve pipe stretches to natural filter bed layer of gravel at the bottom of the river by the radiation of seepage flow hole, and cannula tip is equipped with filter pipe, filters the porose or seam of tube wall.Filter pipe is arranged in layer of gravel, bottom, promptly is provided with some leak sources at this place.

Can there be branch in tunnel of the present invention, and each branch's tunnel ends all has a chamber.

Some seepage flow hole on the chamber wall of the present invention is penetrated as 5 °-18 ° layer width of cloth natural filter bed at the bottom of the river with the different elevations angle, filters the hole on the tube wall or be sewn on layer of gravel to form the leakage face of being made up of some leak sources.

The size of leakage face of the present invention is by the angle in seepage flow hole, and number is controlled the size and the position of leakage face, by natural filter bed structure, and the water table aquifer watery, the pollution of estuary degree, the distance of pollution, pollutant, the muddy migratory direction of pollution require parameter decisions such as the water yield.

The present invention obtains seepage water from the river bed water of the cleaning of natural filter bed filtration, saved the expense of filtration treatment, and is with low cost.The present invention is easy to obtain a large amount of river bed waters from " natural filter bed ", can reach the daily output 1-5 myriametre or the bigger water yield, and this is that conventional intake technology is difficult to realize.The present invention is for obtaining from aquitard than big flood measurer significance.The water yield of the present invention is calculated the relation that adopts hydrostatic pressure and the water yield, the theory of the relation of the water level elevation and the water yield, derives and influences the coefficient of water yield equation, can design the amount of obtaining of evaluation water very reliably.Construction technology of the present invention also is very ripe, and construction costs is low.That the present invention is arranged on is underground, account for the arable land less, is not subjected to the influence of flood, silt, mountain region disaster, keeps the ecological environment balance, has tangible economic results in society.

Following is accompanying drawing of the present invention

Fig. 1 is embodiments of the invention 1 constructional drawings

Fig. 2 is embodiment 2 figure

Fig. 3 is that the A of Fig. 2 is to view.

Following is embodiments of the invention:

Embodiment 1:

Chamber 1 of the present invention is positioned at the bottom of the river, and chamber has supporting steelframe 2.The chamber wall has seepage flow hole 3, creeps into from seepage flow hole 3 to river basal conglomerate layer.When creeping into, sleeve pipe 4 and filter pipe 5 need not rotate synchronously with infiltrating in the discharge orifice 3.Special-purpose drill bit and reamer outwards turn round in the drilling process, get out one than filter pipe 5 big other holes of level, when reaching required, drilling tool is counter to be bored, reamer is turned back to its minimum diameter inward, and drill bit can withdraw from by the filter pipe of staying in the hole 5, and filter pipe plays the guard aperture effect simultaneously.Use a taper plug 6 then, plug is bumped in the layer of gravel, seal the filter pipe end, prevent that silt from entering the seepage flow hole, make underground latent water reach the clean purpose of water sand removal through the hole double filtration of layer of gravel and hollow filtration tube wall with high frequency jarring method.Above technology is used to contain the natural filter bed of big erratic block and perpendicular hard bowlder stone formation.The seepage flow hole of the sand gravel stratum that particle is less adopts filter pipe 5 that down-the-hole drill will seal the end to hit or hit the method for creeping into and follows into layer of gravel synchronously at the end with pushing up by the seepage flow hole on the basement rock.Chamber 1 is communicated with by tunnel at the bottom of the river 8 with vertical shaft 7.There is headrace 17 in the tunnel at the bottom of the river.Vertical shaft is pilot shaft 9 down.Hoistway wall adopts the pre-supporting of seamless steel pipe support, the full supporting of steel concrete pit shaft.Tunnel two walls adopt that precast concrete is brick to be protected at the bottom of the river, and Ji Ding is the full supporting of cast-in-situ steel reinforced concrete.There is gravity vent 10 in the tunnel at the bottom of the river.The pumping plant of vertical shaft has pump house 15 and deep well submerged pump 16.Present embodiment has the width of cloth to penetrate each eight of seepage flow hole and supporting sleeve pipe, filter pipes, and elevation angle minimum is 5 °, is 18 ° to the maximum.Day water yield is 25238 tons.

Embodiment 2:

Basic structure is identical with embodiment 1.Just there is a tunnel 12 in tunnel 11 at the bottom of the river.The tunnel end has chamber 13,14.Chamber is positioned at the bottom of the river.9 seepage flow holes that each the oriented river of chamber wall basal conglomerate layer width of cloth is penetrated, sleeve pipe in the hole and filter pipe structure are with embodiment 1.

Claims

1, Weeping well with natural filter bed is characterized in that by chamber the tunnel, pilot shaft, vertical shaft, pumping plant is formed, chamber is positioned at stratum at the bottom of the river, chamber and vertical shaft by the river at the bottom of the tunnel be communicated with, the chamber wall has the seepage flow hole, sleeve pipe stretches to natural filter bed layer of gravel at the bottom of the river by the radiation of seepage flow hole, cannula tip is equipped with filter pipe, the filter pipe top is sealed with plug, filters the porose or seam of tube wall, and filter pipe is arranged in layer of gravel, bottom.

2, Weeping well with natural filter bed according to claim 1 is characterized in that there is branch in the tunnel, and each branch's tunnel ends has a chamber.

3, Weeping well with natural filter bed according to claim 1 and 2, it is characterized in that several seepage flow holes on the chamber wall are with the different elevations angle, as 5 °-18 ° at the bottom of the river width of cloth penetrate the hole on the filter pipe or be sewn on natural filter bed layer of gravel and form the leakage face of forming by some leak sources.

4, the Weeping well with natural filter bed method for fetching water, it is characterized in that chamber (1) is communicated with by tunnel at the bottom of the river (8) with vertical shaft (7), the chamber wall has seepage flow hole (3), creep into to river basal conglomerate layer from seepage flow hole (3), for containing natural filter bed that big erratic block and hard bowlder stone constitute, when creeping into, sleeve pipe (4) and filter pipe (5) need not rotate synchronously with infiltrating in the discharge orifice (3), special-purpose drill bit and reamer outwards turn round in the drilling process, get out one than big other hole of level of filter pipe (5), when reaching required, drilling tool is counter to be bored, reamer is turned back to its minimum diameter inward, drill bit can withdraw from by the filter pipe of staying in the hole (5), with high frequency jarring method taper plug (6) is bumped in the layer of gravel, seal the filter pipe end, for the less sand gravel stratum of particle, the filter pipe (5) of sealing the end hit with the top by the seepage flow hole on the basement rock or hit the method for creeping into and follows synchronously into layer of gravel at the end, some seepage flow hole on the chamber wall is with the different elevations angle, penetrate as 5 °-18 ° layer width of cloth natural filter bed at the bottom of the river, filter pipe is arranged in layer of gravel, the bottom is filtered the hole on the tube wall or is sewn on the leakage face that layer of gravel formation is made up of some leak sources.