CN1004155B

CN1004155B - Big well cleaned and filtrated by riverbed

Info

Publication number: CN1004155B
Application number: CN86104417.7A
Authority: CN
Inventors: 梁克诚
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-06-27
Filing date: 1986-06-27
Publication date: 1989-05-10
Also published as: CN86104417A

Abstract

The present invention provides a big well purified and filtrated by a riverbed, which can cause well water to be always clear and can solve the problem of well failure. The present invention is provided with an inner well wall and an outer well wall which are made of reinforced coarse porous concrete, and the inner well wall and the outer well wall are combined with cutting edges on the lower parts of the well walls and cover plates on the upper parts of the well walls to form a combined well wall whose middle is filled with a purifying and filtering layer to purify water sources. When the phenomenon of well failure occurs, a flushing pump can be started, river water outside a well is pumped, redundant impurities in the purifying and filtering layer are washed away by flushing pipes and porous flushing branch pipes in the purifying and filtering layer, and then, the working capacity of the purifying and filtering layer is restored. A well cover is covered on the big well, and a proper amount of chlorine is added into the well through a chlorine sterilizing pipe; qualified water is guided into a pump room through water sucking pipes, and thereby, the technology of a water plant is simplified.

Description

Big well cleaned and filtrated by riverbed

The present invention relates to a kind of improved riverbed large open well, particularly a kind ofly can either build riverbed, any Drinking Water water source in, can solve well again and decline and guarantee that water quality meets the big well cleaned and filtrated by riverbed of the existing water quality standard for drinking water of China throughout the year.

Existing riverbed large open well is the permeable borehole wall of individual layer, and the borehole wall does not purify filtering layer, and it can only be built in the highly permeable riverbed with suitable thickness, utilizes these pervious layers to make natural filtering material, comes impurity in the trap water, thereby reaches the purpose of river water cleaning.This large open well in process of production, because the river flow velocity is with changing season, natural filtering material constantly increases the interception of impurity, cause this large open well generally all to have the decline defective of phenomenon (the unit interval aquifer yield of well reduces along with the increase of production time, causes to satisfy the design needs water yield) of well water muddiness flood period (well water turbidity often greater than five degree) and well.

Task of the present invention is that a kind of improved riverbed large open well will be provided.Purify filtering layer and eliminate the rinse-system that well declines owing to have in its borehole wall, so can make well water Chang Qing (the well water turbidity reaches in five degree of national regulation) all the year round throughout the year, eliminate the well phenomenon that declines, it singly is not suitable for building in the highly permeable riverbed, and is suitable for weak permeable riverbed.

Task of the present invention pacifies to become as follows: in the middle of borehole wall interlayer inside and outside the permeable reinforcement coarse porous concrete, 1 meter of one bed thickness is set, particle diameter is 0.8～1.2 millimeter a purification filtering layer, in process of production, the outer river of well will purify filtering layer or the shaft bottom loaded filter enters in the well by the borehole wall, such well water after sterilization, just can reach national drinking water standard; Simultaneously in purifying filtering layer, the porous cleaning hose is set regularly trapped substance unnecessary in the filtering layer is eliminated, with this well that solves large open well problem that declines with press water.

Below with reference to accompanying drawing the present invention is further described.

Fig. 1 is the sectional view of a kind of concrete big well cleaned and filtrated by riverbed of the present invention along the 1-1 line.

Fig. 2 is the sectional view of Fig. 1 along the 2-2 line.

Fig. 3 is porous flushing arm perforate figure.

With reference to Fig. 1,2, particle diameter d=0.8～1.2 millimeter, thickness is 1 meter purification filtering layer (1), is positioned among the formed interlayer of borehole wall cover plate (5) on the interior borehole wall (2) of reinforcement coarse porous concrete and the outer borehole wall (3) of reinforcement coarse porous concrete and sword pin (4) and the purification filtering layer; Well lid (6) seals the suitable for reading of large open well closely, its stops river directly to enter in the well, is provided with the permeability cell (7) of getting rid of unnecessary gas in the well, suction water pipe (8), chlorination pipe (9) in well lid (6), adds a cover hand-hole (10) for what well overhauled usefulness; One layer thickness be set be the loaded filter (11) of 0.7～1 meter, particle diameter d=0.8～1.5 millimeter in the shaft bottom, in case river directly enters in the well.Well is when work; no matter river is in any water level; river can only be by after the purification filtering layer (1) in the borehole wall or purification filtering layer and shaft bottom loaded filter (11) purification; just can enter in the well; and purify filtering layer (1) is to be protected in the interior borehole wall (2), the outer borehole wall (3), sword pin (4) and the borehole wall cover plate (5); though, but can not be flushed away so it is among river washes away.Such large open well just can keep purifying the design thickness of filtering layer (1) throughout the year; When the unnecessary foreign material that are trapped in purifying filtering layer are increased to the aquifer yield that makes well and are less than designed water, can start flushing pump (when water level is basic identical inside and outside the well), the outer river of suction well, by cleaning hose (12), porous flushing arm (13), the unnecessary foreign material that purify in the filtering layer are washed away, make to purify filtering layer recovery design work ability, Here it is, and large open well is eliminated the method that well declines.In order effectively to wash, porous flushing arm (13) is arranged at the position that purifies the close borehole wall in the filtering layer, is advisable with 300 millimeters in porous flushing arm axis and the distance that purifies filtering layer external surface (i.e. the inner surface of the outer borehole wall).(14) in the accompanying drawing be keep large open well stable with the needed reinforced concrete post of intensity, (15) be the interior minimum dynamic water level of well, (16) are the low water level in riverbed, (17) are the riverbed ordinary water level.Never old and feeble in order to ensure large open well, purify the precast rc slab that filtering layer borehole wall cover plate (5) is made activity form, with 1.2 cement mortar joint fillings,, check or change to purify filtering layer between plate so that open Manhole cover in dry season.Riverbed large open well, its plane can be done circular, square or other shapes.Interior thickness of shaft wall is 250 millimeters, and outer thickness of shaft wall is 200 millimeters.The grating of borehole wall coarse porous concrete is: stone d=10～15 millimeter, and water/binder ratio is 0.32: 1, stone rate is 1: 6, this concrete preparation method is: the batching first dry mixing in back three times, and back wet-mixing three times is when wet-mixing, water can not once add, on one side to mix, Yi Bian add slowly with porous nozzle, when ramming, can only compacting, can not smash with electromagnetic shaker or drill rod shake, in order to avoid concrete pore is stopped up, simultaneously, concrete is wet-mixing or ramming no matter, stream slurry phenomenon all mustn't occur; Other part concrete can adopt No. 200 in the well; The material that purifies filtering layer (1) and loaded filter (11) can adopt quartz sand or other hard materials.

With reference to Fig. 3, this is porous flushing arm perforate figure, and (18) are the outsourcing galvanized wire mesh among the figure, and the iron wire diameter is 1 millimeter, and the mesh aperture also is 1 millimeter; (19) be 3～4 millimeters of wall thickness, diameter is 100 millimeters a seamless steel pipe tube wall, and pipe center to center distance is 500 millimeters; (20) be the tube wall aperture, 3 of every rows of openings, aperture d=3 millimeter, the position is purifying the filtering layer outside, and the mesopore and the steel tube section center of circle are in a horizontal position, and arrange every 40 millimeters perforates one along the pipe range direction on the tube wall of central angle 45 degree in two holes up and down.This big well cleaned and filtrated by riverbed is suitable for building in the river that can make the Drinking Water water source; The new waterworks construction and the old water factory that are suitable on the above-mentioned river transform; The city and the rural area that are suitable for above-mentioned river are suitable for the water factory of the different scales in above-mentioned river, and individual well scale minimum can be tens tons of water yields every day, and maximum-norm is 20,000 tons, and the gang of wells form of available a plurality of wells that scale is big again solves.

General large open well is not owing to self have purifying type facility, an intake as whole water factory process system.The technological process of original water factory is intake-pump house-Jia alum-mixing-reaction-precipitation-filtration-sterilization-clear water reserviors-two pump houses-user, and the function that this big well cleaned and filtrated by riverbed has water intaking simultaneously and filters, water factory's technological process is big well cleaned and filtrated by riverbed-sterilization-pump house-user, simplified water factory's technological process owing to adopt big well cleaned and filtrated by riverbed, make operation reduce to 4 by 11, save land used, save capital investment, save electromechanical equipment, save the energy and manpower, reduce water producing cost, thereby bring huge techno-economic effect.

Claims

1, a kind of riverbed large open well that is made of the borehole wall, sword pin and well lid is characterized in that:

A. the well wall (3) of passing through inside outside the interior permeable borehole wall (2) has borehole wall cover plate (5) on the inside and outside borehole wall, purification filtering layer (1) is arranged in the borehole wall interlayer.

B., the rinse-system that comprises cleaning hose (12) and porous flushing arm (13) is arranged in the purification filtering layer (1) of borehole wall interlayer.

2, large open well according to claim 1, it is characterized in that purifying filtering layer (1) thickness is 1 meter, adopting particle diameter is that 0.8 to 1.2 millimeter quartz sand is as filtrate.

3, large open well according to claim 1 and 2, it is characterized in that porous flushing arm (13) internal diameter in the borehole wall interlayer is 100 millimeters, pipe thickness is 3 to 4 millimeters, outsourcing galvanized wire mesh (18), iron wire diameter are 1 millimeter, and mesh diameter also is 1 millimeter, 3 of the every rows of openings of tube wall, aperture d=3 millimeter, arrange every 40 millimeters perforates one along the pipe range direction purifying the filtering layer outside position.

4, large open well according to claim 1 and 2, the vertical centre spacing that it is characterized in that porous cleaning hose (13) is 500 millimeters, the pipe axis is 300 millimeters with the distance that purifies filtering layer external surface (i.e. the inner surface of the outer borehole wall).

5, large open well according to claim 3 is characterized in that borehole wall cover plate (5) is a reinforced concrete prefabricated board.

6, large open well according to claim 3, its feature do not have thick 250 millimeters of the interior borehole wall (2), thick 200 millimeters of the outer borehole wall (3).