CN104499560A - Combined rainwater seepage well and construction method - Google Patents
Combined rainwater seepage well and construction method Download PDFInfo
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- CN104499560A CN104499560A CN201410795220.8A CN201410795220A CN104499560A CN 104499560 A CN104499560 A CN 104499560A CN 201410795220 A CN201410795220 A CN 201410795220A CN 104499560 A CN104499560 A CN 104499560A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
- E03F5/0403—Gullies for use in roads or pavements with a sediment trap
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
- E03F5/0404—Gullies for use in roads or pavements with a permanent or temporary filtering device; Filtering devices specially adapted therefor
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Abstract
The invention discloses a combined rainwater seepage well and a construction method, belongs to the field of drainage projects, and particularly relates to a structure for discarding initial rainwater, adjusting the rainwater and supplying underground water by seeped rainwater. The combined rainwater seepage well mainly comprises a shaft, a pipe and a well body, wherein the shaft is positioned on the lower portion of the well body; and the pipe is connected with the well body. Seepage wells are arranged on a rainwater pipe at intervals of 1-3 inspection wells, rainwater is collected through the pipe during raining and seeps into the ground through the seepage well, the flow of the rainwater is reduced at the source, an effect of shifting peaks and adjusting storage is achieved, and waterlogging caused by accumulated water on the ground is reduced. The shaft is filled with filter materials, a slime pit is arranged on the bottom of the well body, a filter screen is arranged on the bottom of the slime pit, and the rainwater is filtered by the filter materials, seeps into the ground and supplements the underground water. The seepage well is constructed in a combined mode, the well body on the upper portion of the seepage well is constructed by using a down-top method, different sections of the shaft on the lower portion of the seepage well are constructed one by one by using a top-down method, and the construction difficulty and the manufacturing cost are greatly reduced.
Description
Technical field
The present invention relates to a kind of combined rainwater seepage well and construction method, belong to drainage works field, particularly can be used for early-stage rainwater stream abandoning, Adjusting rainwater and utilize structure and the construction method of rainwater infiltration recharge of groundwater.
Background technology
Urban sewerage and drainage is adopt hidden pipe discharge mostly, and arm collects rainwater catchment to main, and final remittance enters water body to house steward.It is lower that China's many Old Cities city storm sewer builds standard, in recent years, along with the aggravation of extreme weather phenomenon, all in various degree there is waterlogging phenomenon, cause serious loss, urban sewerage and drainage system is related to the safety in city, and urban waterlogging disaster problem is subject to the attention of relevant department day by day.Traditional cities construction mode is hard surface everywhere.Whenever heavy rain, mainly rely on pipe duct, pumping plant etc. " grey " facility to carry out draining, control as main planning and design concept with " fast get rid of " and " end is concentrated ", often cause and meet rain must be flooded, drought and waterlogging racing.According to " sponge urban construction technical manual ", urban construction from now on will be emphasized preferentially to utilize " green " measure such as grass planting ditch, Rain Garden, sunk type greenery patches to organize draining, control as main planning and design concept with " arranging slowly-releasing slowly " and " source dispersion ".City is likened exactly as sponge in sponge city, run into when having rainfall can absorb on the spot or nearby, save, permeate, purifying rainwater, recharge of groundwater, regulate water circulation; Have ready conditions when drought and water shortage and the water stored discharged, and be used, thus allow the migratory movement of water in city " nature " more.
Water is Source of life, and using water wisely has become the instant focal issue of the mankind.Due to a large amount of exploiting groundwater, some urban groundwater moisture storage capacitys sharply reduce, groundwater table reduces year by year, urban ground hard place destroys the passage of natural water circulation in addition, rainwater drops to building area or hardened ground and can not carry out water circulation with natural way again, thus causing the moisture content of soil to change, the groundwater run off that natural circulation is formed greatly reduces.For general city, except rainy season, most of rainfall is moderate rain and light rain, and the season that at a time when this, groundwater table is lower, rainwater is all bled off by row of conduits, effectively can not penetrate into groundwater feed underground water, is a kind of waste of water resource.At present, groundwater recharge is more and more subject to people's attention.Rainwater infiltration not only can play alleviation discharge pressure, solution urban waterlogging has important function, can play covering underground water simultaneously, the effect of self-restraint life.
Rainwater seepage well is one of measure building sponge city.Prevent the generation of waterlogging phenomenon based on rainwater storage, the seepage well of prior art, be generally the seepage pit excavating certain depth at the bottom of rainwater inspection well, back-up sand rock layers in hole, reserve a hole at the bottom of manhole, rainwater can flow to sand stone layer to subsurface wastewater infiltration system by the hole in shaft bottom.But the dark difficulty of construction of digging due to seepage pit is comparatively large, and generally just dig 1 ~ 2 meter down again in shaft bottom, the degree of depth of sand stone layer is more shallow, and the cubical content saving rainwater is little, does not substantially have pondage capacity, and rainwater infiltration effect is not good yet.The special seepage well being used as Rain water returning recharge of groundwater, adopt in deep-well to arrange and recharge pipe, filtrate is filled in the periphery of recharging pipe, the effect of this recharge well is better, but is all generally be used in concentrate to recharge, and the rainwater of roadside can not be effectively utilized, recharge well adopts rig well-digging construction, pipe is recharged in installation, and difficulty of construction is large, and cost is higher.
Summary of the invention
The object of the invention is: a kind of combined rainwater seepage well and construction method are provided.Rainwater seepage well is arranged on the storm sewer under urban road, and seepage well is combined by well body and vertical shaft, and the degree of depth of vertical shaft is comparatively dark, and rainwater storage volume is larger.Its beneficial effect is: on storm sewer, be arranged to seepage well every 1 ~ 3 manhole, during rainfall, rainwater is collected by pipeline, is permeated the ground by seepage well, has cut down rainwater flow from source, play rainwater to avoid the peak hour the effect of regulating and storing, reduce the generation of excess surface water waterlogging phenomenon.Fill filtrate in vertical shaft, rainwater to permeate the ground covering underground water through media filtration.Seepage well adopts combination construction, and the well body on top adopts along way construction, and the vertical shaft of bottom adopts reverse construction, greatly reduces difficulty of construction and cost.
The present invention is realized by following technology: combined rainwater seepage well, primarily of vertical shaft 1, pipeline 2, well body 3 forms, it is characterized in that: vertical shaft 1 is positioned at the bottom of well body 3, pipeline 2 is connected with well body 3, the borehole wall of vertical shaft 1 saves standard knot 6 by 1 joint base section 4 and 1 ~ 10 and forms, base section 4 and standard knot 6 are annulus tubular, external diameter is identical, the height of 1 joint is 800 ~ 1500 millimeters, the bottom wall thickness of base section 4 and standard knot 6 100 ~ 200 millimeters, larger than top internal diameter 200 ~ 300 millimeters of bottom inner diameter, the space that multiple frustum of a cone is superimposed to form is formed in vertical shaft 1, filtrate 8 is filled in vertical shaft 1, the bottom of well body 3 is provided with mud sump 9, mud sump 9 end, is provided with filter screen 10.The upper outside of base section 4 is provided with platform 5, and platform 5 horizontally outward exceeds well body 3 external diameter 50 ~ 200 millimeters, and platform 5 is as the basis of well body 3.The upper inner of standard knot 6 is provided with boss 7, and boss 7 upwards exceeds base section 4 or 50 ~ 100 millimeters, standard knot 6 end.Mud sump 9 degree of depth is 300 ~ 600 millimeters, and uniform 4 ~ 8 hooks 11 of upper limb of mud sump 9, filter screen 10 edge is laid with 4 ~ 8 links, and link hangs on hook 11.
The construction method of combined rainwater seepage well, vertical shaft 1 adopts reverse construction, and well body 3 adopts along way construction, is the combination of two kinds of construction methods.Vertical shaft 1 adopts top-down reverse construction, and construction method is as follows:
A. the degree of depth of groove to well body 3 end is excavated;
B. reverse construction vertical shaft 1 is adopted with trench bottom 13 downwards for work plane, outside soil wall 14 along vertical shaft 1 is cut the earth, and digs out the external diameter that diameter equals base section 4, saves the column type foundation ditch of 4 height based on the degree of depth, under dig to foundation ditch bottom surface 15, then dig out platform groove 51 on top;
C. on foundation ditch bottom surface 15, inner membrance 16 is installed, native wall 14, basis of formation joint chamber 41 between foundation ditch bottom surface 15 and inner membrance 16;
D. in base section chamber 41 and platform groove 51, early strength concrete is adopted to build base section 4;
E. continue downwards in foundation ditch bottom surface 15 to cut the earth, dig out the external diameter that diameter equals standard knot 6, the degree of depth is the column type foundation ditch of joint standard knot 6 height, and new foundation ditch bottom surface 15 is formed at bottom;
F. inner membrance 16 is pulled down and be separated with base section 4 demoulding, inner membrance 16 drops on foundation ditch bottom surface 15, foundation ditch bottom surface 15 is installed inner membrance 16, native wall 14, forms standard knot chamber 61 between foundation ditch bottom surface 15 and inner membrance 16, the top of inner membrance 16 and the bottom of base section 4 form one and enclose boss chamber 71;
G. in standard knot chamber 61, early strength concrete is adopted to build standard knot 6 from boss chamber 71;
H. constructing, next saves standard knot 6, continues downwards to cut the earth, dig out the external diameter that diameter equals standard knot 6 in foundation ditch bottom surface 15, and the degree of depth is the column type foundation ditch of joint standard knot 6 height, and new foundation ditch bottom surface 15 is formed again at bottom;
I. inner membrance 16 is pulled down and be separated with standard knot 6 demoulding, successively remaining standard knot 6 of circulation construction;
J. in vertical shaft 1, filtrate 8 is filled.
Well body 3 adopts bottom-up suitable practice construction, and construction method is as follows:
A. on the platform 5 of base section 4, adopt brick or concrete pouring construction well body 3, construct and imbed hook 11 when mud sump 9 pushes up;
B. the pipeline 2 of upstream and downstream is accessed well body 3;
C. upwards continue construction well body 3 to ground, well lid 12 is installed;
D. on mud sump 9, place filter screen 10, the link of filter screen 10 hangs on hook 11.
Combined rainwater seepage well, the above is well body 3, and storm sewer 2 accesses well body, well body 3 and common manhole construct substantially identical, and difference is common inspection well is closed, and is transmission bottom the well body 3 of this invention, well body 3 connects vertical shaft 1 below, is the combination of two kinds of structure.The well body 3 on top adopts along way construction, and the vertical shaft 1 of bottom adopts reverse construction, is the combination of construction method.Adopt reverse construction vertical shaft 1, excavate vertical shaft 1 from the top down, merogenesis construction concrete walling is as protection, generally dig to well body less than 3 10 ~ 15 meters, filtrate 8 is filled in vertical shaft 1, filtrate 8 adopts prototype gradation sand gravel or graded broken stone, arranges mud sump 9 in the bottom of well body 3, lays filter screen 10 bottom mud sump 9 and in vertical shaft 1 between filtrate 8.Rainwater seepage well is arranged to by the manhole of urban rainwater pipeline, or be arranged to rainwater seepage well every 1 ~ 3 manhole, rainfall surface runoff is collected by storm sewer, flow to seepage well rainwater to filter flow into underground through filter screen 10, filtrate 8, and be not superimposed upon the rain pipe in downstream, when be full of rainwater in vertical shaft 1 and under ooze not in time, rainwater flows into downstream line again, reduce the flow flowing into lower segment pipe, the effect that playing avoids the peak hour regulates and stores.Rainfall early-stage rainwater is comparatively serious by ground pollution, early-stage rainwater first flows into the mud sump 9 of seepage well, through the filtration of filter screen 10, filtrate 8, again through the filtration on stratum, pollutant is filtered decomposition, and earth's surface is by after rain drop erosion, and the less downstream that enters again of later stage rainwater pollution enters water body, therefore, rainwater seepage well can also play the effect that early-stage rainwater is separated.Early-stage rainwater containing more silt particle, silt particle sinks in the mud sump 9 of rainwater seepage well, and can reduce alluvial blocking in pipeline, during cleaning mud sump 9 silt particle, filter screen 10 is carried to outside well by the link only need mentioning filter screen 10, the clear silt particle filtered by filter screen 10.
Accompanying drawing explanation
Fig. 1 is sectional elevation of the present invention;
Fig. 2 is circular well body plane figure;
Fig. 3 is rectangular well body plane figure;
Excavation of foundation pit figure is saved based on Fig. 4;
Shuttering supporting figure is saved based on Fig. 5;
Concreting figure is saved based on Fig. 6;
Fig. 7 is first segment standard knot excavation of foundation pit and shuttering supporting figure;
Fig. 8 is first segment standard knot concreting figure;
Fig. 9 is second section standard knot excavation of foundation pit and shuttering supporting figure.
In figure: 1-vertical shaft, 2-pipeline, 3-well body, 4-base section, 5-platform, 6-standard knot, 7-boss, 8-filtrate, 9-mud sump, 10-filter screen, 11-links up with, 12-well lid, 13-trench bottom, 14-Tu Bi, 15-foundation ditch bottom surface, 16-inner membrance, 41-base section chamber, 51-platform groove, 61-standard knot chamber, 71-boss chamber.
Detailed description of the invention
Rainwater seepage well of the present invention is made up of vertical shaft 1, pipeline 2, well body 3, and vertical shaft 1 is positioned at the bottom of well body 3, and pipeline 2 is connected with well body 3, sees Fig. 1.Well body 3 and common manhole construct substantially identical, and difference is common inspection well is closed, and is transmission bottom the well body 3 of this invention, and well body 3 connects vertical shaft 1 below, is the combination of two kinds of structure.The borehole wall of vertical shaft 1 saves standard knot 6 by 1 joint base section 4 and 1 ~ 10 and forms, and adopts concrete cast-in-situ.Base section 4 and standard knot 6 are annulus tubular, external diameter is identical, the height of 1 joint is 800 ~ 1500 millimeters, the bottom wall thickness of base section 4 and standard knot 6 100 ~ 200 millimeters, larger than top internal diameter 200 ~ 300 millimeters of bottom inner diameter, form the space that multiple frustum of a cone is superimposed to form in vertical shaft 1, the inner membrance 16 of namely building base section 4 and standard knot 6 is up-small and down-big frustums of a cone, the spatial form formed in vertical shaft 1 after merogenesis builds base section 4 and standard knot 6.The upper inner of standard knot 6 is provided with boss 7, boss 7 upwards exceeded base section 4 or upper 50 ~ 100 millimeters, standard knot 6 end of joint, namely save the internal diameter of the concrete walling of building than upper one little for the upper diameter of inner membrance 16, concreting is convenient in the boss chamber 71 reserved, after concreting, a upper joint concrete walling is blocked by boss 7 avoids horizontal displacement.Fill filtrate 8 in vertical shaft 1, filtrate 8 adopts prototype gradation sand gravel or graded broken stone.The bottom of well body 3 is provided with mud sump 9, mud sump 9 end, is provided with filter screen 10, mud sump 9 degree of depth is 300 ~ 600 millimeters, uniform 4 ~ 8 hooks 11 of mud sump 9 upper limb, hook 11 adopts the corrosion resistant such as stainless steel or aluminium alloys material to make, filter screen 10 adopts two-layer nylon wire, the permeable geotextiles of therebetween one deck makes, it is mud sump 9 diameter that filter screen 10 is made into diameter, height is that the circle of the height of mud sump 9 is bag-shaped, filter screen 10 edge is laid with 4 ~ 8 links, and link adopts the nylon rope of diameter 10 millimeters to make, and link hangs on hook 11.When clearing up the silt particle in mud sump 9, hold link and filter screen 10 is promoted to outside well, remove silt particle and put back to mud sump 9 again, as silt particle amount is comparatively large, first can digs out part silt particle with spade during cleaning and reintroduce filter screen 10.The upper outside of base section 4 is provided with platform 5, and platform 5 horizontally outward exceeds well body 3 external diameter 50 ~ 200 millimeters, and platform 5 is as the basis of well body 3.Platform 5 outwards exceeds the shape of shape depending on well body 3 of well body 3, and if well body 3 is circular inspection well, platform 5 outer rim shape is circular, sees Fig. 2; If well body 3 is rectangle inspection well, platform 5 outer rim shape is rectangle, sees Fig. 3.
The setting position of rainwater seepage well is according to Adjusting rainwater and recharge requirement by design decision, each manhole of urban rainwater pipeline can be arranged to rainwater seepage well, or be arranged to rainwater seepage well every 1 ~ 3 manhole.The construction method of rainwater seepage well, the well body 3 on top adopts along way construction, and the vertical shaft 1 of bottom adopts reverse construction, is the combination of construction method.When laying storm sewer, in the position arranging seepage well, downward merogenesis construction shaft 1, vertical shaft 1 adopts top-down reverse construction, and construction method is as follows:
A. excavate groove to the degree of depth at well body 3 end, construct with pipeline groove simultaneously, because basis is arranged at pipeline 2 bottom, the degree of depth of groove is substantially suitable with well body 3 end degree of depth, digs to the trench bottom 13 herein i.e. initial surface of vertical shaft 1 construction;
B. be the downward reverse construction vertical shaft 1 of work plane with trench bottom 13, outside soil wall 14 along vertical shaft 1 is cut the earth, cut the earth and adopt hand fit's soil bucket to be vertically unearthed, dig out the external diameter that diameter equals base section 4, the column type foundation ditch of 4 height is saved based on the degree of depth, under dig to foundation ditch bottom surface 15, platform groove 51 is dug out again on top, see Fig. 4, if well body 3 is circular inspection well, platform groove 51 outer rim scrapes out circle, if well body 3 is rectangle inspection well, platform groove 5 outer rim scrapes out rectangle, and outer rim should exceed well body 3 external diameter 50 ~ 200 millimeters;
C. on foundation ditch bottom surface 15, install inner membrance 16, inner membrance 16 is the up-small and down-big frustum of a cone, and tapering is consistent with base section 4 and standard knot 6 endoporus.Inner membrance 16 adopts angle steel to do skeleton, external application steel plate, and inner membrance 16 is assembled by the assembled employing screw of 4 lobe, can in the end to construct complete dismounting inner membrance 16 by vertical shaft 1.After inner membrance 16 installation in position, native wall 14, basis of formation joint chamber 41 between foundation ditch bottom surface 15 and inner membrance 16, inner membrance 16 answers accurate positioning, and Fig. 5 is shown in fixation;
D. in base section chamber 41 and platform groove 51, adopt early strength concrete to build base section 4, see Fig. 6.The preparation of early strength concrete should control concrete strength and reach the collapsible die time, should coincide with the operation used time below;
E. continue downwards in foundation ditch bottom surface 15 to cut the earth, dig out the external diameter that diameter equals standard knot 6, the degree of depth is the column type foundation ditch of joint standard knot 6 height, and new foundation ditch bottom surface 15 is formed at bottom;
F. pulled down by inner membrance 16 and be separated with base section 4 demoulding, the demoulding should reach more than 70% of design strength at concrete strength can the demoulding, and therefore, the setting time of early strength concrete is with coordination of processes is very important below.Inner membrance 16 drops on foundation ditch bottom surface 15, and foundation ditch bottom surface 15 is installed inner membrance 16, native wall 14, forms standard knot chamber 61 between foundation ditch bottom surface 15 and inner membrance 16, and the top of inner membrance 16 and the bottom of base section 4 form one and enclose boss chamber 71, see Fig. 7;
G. in standard knot chamber 61, adopt early strength concrete to build standard knot 6 from boss chamber 71, see Fig. 8;
H. constructing, next saves standard knot 6, continues downwards to cut the earth, dig out the external diameter that diameter equals standard knot 6 in foundation ditch bottom surface 15, and the degree of depth is the column type foundation ditch of joint standard knot 6 height, and new foundation ditch bottom surface 15 is formed again at bottom;
I. inner membrance 16 is pulled down and be separated with standard knot 6 demoulding, see Fig. 9.Remaining standard knot 6 of circulation construction successively, vertical shaft digs the degree of depth 1 time and is determined by design according to geological condition, also not arriving projected depth, can notify designing unit during construction as run into the pervious layer such as layer of sand, sand gravel layer, digs under checking termination by designing unit.Construct after final section standard knot 6, the assembling screw of inner membrance 16 has been unclamped, removed inner membrance 16;
J. in vertical shaft 1, fill filtrate 8, filtrate 8 adopts prototype gradation sand gravel or graded broken stone.
After vertical shaft 1 is constructed, well body 3 that the platform 5 of vertical shaft 1 is constructed.Well body 3 adopts bottom-up suitable practice construction, and construction method is as follows:
A. on the platform 5 of base section 4, adopt brick or concrete pouring construction well body 3, well body 3 selects circle or rectangle according to conditions such as caliber, pipeline access waies, and well body 3 was constructed and imbed hook 11 when mud sump 9 pushes up;
B. the pipeline 2 of upstream and downstream is accessed well body 3;
C. upwards continue construction well body 3 to ground, well lid 12 is installed;
D. on mud sump 9, place filter screen 10, the link of filter screen 10 hangs on hook 11.
Claims (5)
1. a combined rainwater seepage well, primarily of vertical shaft (1), pipeline (2), well body (3) forms, it is characterized in that: vertical shaft (1) is positioned at the bottom of well body (3), pipeline (2) is connected with well body (3), the borehole wall of vertical shaft (1) is made up of 1 joint base section (4) and 1 ~ 10 joint standard knot (6), base section (4) and standard knot (6) are annulus tubular, external diameter is identical, the height of 1 joint is 800 ~ 1500 millimeters, the bottom wall thickness of base section (4) and standard knot (6) 100 ~ 200 millimeters, larger than top internal diameter 200 ~ 300 millimeters of bottom inner diameter, the space that multiple frustum of a cone is superimposed to form is formed in vertical shaft (1), filtrate (8) is filled in vertical shaft (1), the bottom of well body (3) is provided with mud sump (9), mud sump (9) end, is provided with filter screen (10).
2. combined rainwater seepage well according to claim 1, it is characterized in that: the upper outside of described base section (4) is provided with platform (5), platform (5) horizontally outward exceeds well body (3) external diameter 50 ~ 200 millimeters, platform (5) is as the basis of well body (3), the upper inner of standard knot (6) is provided with boss (7), and boss (7) upwards exceeds base section (4) or 50 ~ 100 millimeters, standard knot (6) end.
3. combined rainwater seepage well according to claim 1, it is characterized in that: described mud sump (9) degree of depth is 300 ~ 600 millimeters, uniform 4 ~ 8 hooks (11) of upper limb of mud sump (9), filter screen (10) edge is laid with 4 ~ 8 links, and link hangs on hook (11).
4. a combined rainwater seepage well construction method, is characterized in that: described vertical shaft (1) adopts top-down reverse construction, and construction method is as follows:
A. the degree of depth of groove to well body (3) end is excavated;
B. with trench bottom (13) for work plane adopts reverse construction vertical shaft (1) downwards, outside Tu Bi (14) along vertical shaft (1) cuts the earth, dig out the external diameter that diameter equals base section (4), the column type foundation ditch of (4) height is saved based on the degree of depth, under dig to foundation ditch bottom surface (15), then dig out platform groove (51) on top;
C. on foundation ditch bottom surface (15), inner membrance (16) is installed, Tu Bi (14), basis of formation joint chamber (41) between foundation ditch bottom surface (15) and inner membrance (16);
D. in base section chamber (41) and platform groove (51), early strength concrete is adopted to build base section (4);
E. continue downwards to cut the earth in foundation ditch bottom surface (15), dig out the external diameter that diameter equals standard knot (6), the degree of depth is the column type foundation ditch of joint standard knot (6) height, and new foundation ditch bottom surface (15) is formed at bottom;
F. inner membrance (16) is pulled down and be separated with base section (4) demoulding, inner membrance (16) drops on foundation ditch bottom surface (15), foundation ditch bottom surface (15) install inner membrance (16), Tu Bi (14), form standard knot chamber (61) between foundation ditch bottom surface (15) and inner membrance (16), the top of inner membrance (16) and the bottom of base section (4) form one and enclose boss chamber (71);
G. early strength concrete is adopted to build standard knot (6) in from boss chamber (71) to standard knot chamber (61);
H. constructing, next saves standard knot 6, continues downwards to cut the earth, dig out the external diameter that diameter equals standard knot (6) in foundation ditch bottom surface (15), and the degree of depth is the column type foundation ditch of joint standard knot (6) height, and new foundation ditch bottom surface (15) is formed again at bottom;
I. inner membrance (16) is pulled down and be separated with standard knot (6) demoulding, successively circulation remaining standard knot of construction (6);
J. in vertical shaft (1), filtrate (8) is filled.
5. a combined rainwater seepage well construction method, is characterized in that: described well body (3) adopts bottom-up suitable practice construction, and construction method is as follows:
A. the platform (5) in base section (4) is upper adopts brick or concrete pouring construction well body (3), constructs to imbed hook (11) when mud sump (9) pushes up;
B. by the pipeline (2) of upstream and downstream access well body (3);
C. upwards continue construction well body (3) to ground, well lid (12) is installed;
D. on mud sump (9), place filter screen (10), the link of filter screen (10) hangs on hook (11).
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| CN105569073A (en) * | 2015-12-24 | 2016-05-11 | 福建省电力勘测设计院 | Suspension type variable-wall-thickness elliptic reversely-built vertical shaft and variable-wall-thickness adjusting method thereof |
| CN106906833A (en) * | 2015-12-22 | 2017-06-30 | 中国二十冶集团有限公司 | A kind of contrary sequence method underground engineering dewatering well for not influenceing traffic |
| CN107386403A (en) * | 2016-05-16 | 2017-11-24 | 张明富 | Deep layer is regulated and stored channel system and construction method |
| CN107905334A (en) * | 2017-12-26 | 2018-04-13 | 水利部交通运输部国家能源局南京水利科学研究院 | Urban road oozes the monitoring device and construction method of catch-basin recharge of groundwater |
| CN109235616A (en) * | 2018-11-16 | 2019-01-18 | 洛阳栾川钼业集团股份有限公司 | A kind of tailing dam gully arch bar installation method |
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| CN107905334A (en) * | 2017-12-26 | 2018-04-13 | 水利部交通运输部国家能源局南京水利科学研究院 | Urban road oozes the monitoring device and construction method of catch-basin recharge of groundwater |
| CN109235616A (en) * | 2018-11-16 | 2019-01-18 | 洛阳栾川钼业集团股份有限公司 | A kind of tailing dam gully arch bar installation method |
| CN111677082A (en) * | 2020-06-17 | 2020-09-18 | 西北综合勘察设计研究院 | Automatic infiltrating irrigation system for reducing urban inland inundation |
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| CN104499560B (en) | 2016-06-15 |
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