CN104847010A - Urban miniature underground reservoir and construction method - Google Patents
Urban miniature underground reservoir and construction method Download PDFInfo
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- CN104847010A CN104847010A CN201510127541.5A CN201510127541A CN104847010A CN 104847010 A CN104847010 A CN 104847010A CN 201510127541 A CN201510127541 A CN 201510127541A CN 104847010 A CN104847010 A CN 104847010A
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Abstract
The invention discloses an urban miniature underground reservoir. The underground reservoir is composed of multiple water storage ponds which are buried underground and connected with municipal administration rainwater drainage pipelines, and the miniature reservoir is located below urban road auxiliary roads and green belts. Rainwater on the roads and the peripheries of the roads can flow into the reservoir through drainage pipes, and when it rains, the rainwater can flow into the miniature reservoir through the drainage pipes to be stored; as tiny holes are formed within the range above the one fourth to one third portion of the side face of the reservoir, water in the miniature reservoir can slowly permeate into a foundation soil body to supplement underground water and improve the underground water environment. The invention further discloses a construction method for the miniature underground reservoir. The miniature underground reservoir can relieve pressure of the municipal administration rainwater drainage pipelines, improve the municipal water use capacity, supplement the underground water and improve the underground water environment, and therefore the miniature underground reservoir has large social benefits and high ecological value.
Description
Technical field
The invention belongs to municipal engineering field, particularly the miniature groundwater reservoir in a kind of city be connected with rain drainage pipe and construction method.
Background technology
Along with scale of urbanization is increasing, the hard ground such as concrete and pitch gets more and more, and rainwater and underground water are isolated more and more serious, and because city expands, urban discharging pipeline diameter is also increasing.Have little time discharge during heavy rain and cause waterlogging, time serious, jeopardize life and the material property safety of the people.As year in 2012 Beijing 7.21 extra torrential rain, cause between the dead house collapse 10660 of 79 people, 160.2 ten thousand people are disaster-stricken, economic loss 116.4 hundred million yuan.In May, 2014 Shenzhen heavy rain, causing local occurring about 150 place's road ponding, there are waterloggings in 20 sections, place, and more than 5000 bus cannot normal operation, and 2000 automobiles are flooded, and Shenzhen Airport is accumulative cancels nearly 200 of arrival & departure flights.
On the other hand, urban groundwater declines day by day, and urban water shortage is day by day serious, especially North City.2014, city, 657, the whole nation has more than 300 " lack of water ", and city of severe water shortage has more than 100.Official's data display, water resources in Hebei Province critical shortage, the whole province is average water total resources 205 billion cubic meter for many years.Water resource of per capita 307 cubic metres is 1/7 of average national level, the extreme dehydration standard far below internationally recognized 500 cubic metres.By this year by the end of January, underground water average buried depth in Beijing Plain is compared with same period last year, and groundwater table declines 0.3 meter, and groundwater storage reduces by 1.5 billion cubic meters; Compared with 1998 before over-extraction year same periods, groundwater table declines 12.83 meters, and groundwater storage reduces by 65 billion cubic meters.In addition, underground, Beijing has formed the Trend of Groundwater Descent Funnel district of area about 1000 square kilometres.
Traditional rainwater collection pool before the present invention is not communicated with rainwater drainage pipe, and slightly can only indirectly alleviate drainage pipe pressure, sharing capability is limited, can not emptying surface water quickly and efficiently when heavy rain; Seal at the bottom of pond, can not to seepage in underground, thus cannot recharge of groundwater, cause water resource waste.Hot season, because too much hardened ground causes underground water to be difficult to evaporative heat loss, solar irradiation gathering causes serious heat island effect.Can cause ground settlement in addition, sink in road surface.Therefore, in the urgent need to researching and developing a kind of miniature reservoir technology in underground that can solve urban storm big flood, North City damage caused by a drought can be alleviated again.
Summary of the invention
The object of the invention is to overcome traditional rain drainage pipe drainability when heavy rain not enough, underground water can not get supplementing, the defect of water resource waste, the miniature reservoir in a kind of underground is proposed, this miniature reservoir can effectively alleviate drainage pipe pressure, prevent Urban Flood Waterlogging, and underground water is supplemented, alleviate urban water shortage arid.Another object of the present invention is to provide the construction method of described miniature reservoir in actual Municipal Drainage Engineering.
The present invention realizes by the following technical solutions:
A kind of miniature groundwater reservoir, be made up of the multiple reservoirs being embedded in underground, reservoir is connected with municipal rain drainage pipe, and reservoir end face absolute altitude flushes with the axis of rain drainage pipe; Miniature water warehouse compartment is below the auxiliary road of urban road and greenbelt; On road and the rainwater of road periphery can flow into reservoir by gutter; During heavy rain, rainwater automatically flows into miniature reservoir by gutter and stores, and after the water in reservoir stores completely, unnecessary water is still drained from rain drainage pipe; In reservoir, water body may be used for municipal greening irrigation, urban fire control etc.; Reservoir side arranges small hole, makes the water in miniature reservoir slowly can infiltrate foundation soil body, recharge of groundwater.
When the water of described miniature reservoir is not stored full, the rainwater flowing into rain drainage pipe from ground preferentially enters miniature reservoir and stores, and when the water storage of miniature reservoir is full, unnecessary water is drained.
Described miniature reservoir has multiple reservoir to be connected with rain drainage pipe in underground, share other reservoirs when a certain reservoir hypervolia by rainwater drainage pipe.
Described miniature reservoir has pumping conduit to be linked up by several reservoir, the water in several reservoir can be extracted into ground, for municipal water use simultaneously.
Described miniature reservoir surrounding concrete cast-in-situ, side arranges small hole, the clay sealing that hole permeability is less, and water can slowly be permeated the ground.
Described miniature reservoir top has vertical pipeline to be connected with road center isolated area bottom.
Described miniature reservoir is connected with T-shaped draining by direct-connected pipe with rain drainage pipe.
Described connecting leg, being provided with filter screen with drainage pipe junction, prevents connecting leg from blocking.
The invention still further relates to the construction method of miniature groundwater reservoir, comprise the following steps:
(1) carry out geological prospecting, surveying setting-out, determine that Miniature water warehouse compartment is put;
(2) be excavated to projected depth, generally make bottom reservoir lower than rain drainage pipe 2-3m;
(3) installation form, builds reservoir concrete, and (reserved connecting leg hole, drinking-water pipe hole, reservoir sidewall hole) carries out concrete curing;
(4) concrete curing 28 days intensity qualified after, in sidewall hole, fill in clay, and hole top should spread the sandstone of one deck Large stone, prevent clay local failure because of washing away of water;
(5) gutter unwrapping wire location, installs filter screen, T-shaped gutter and direct-connected pipe successively;
(6) step of (2) ~ (5) is repeated, until all reservoirs are connected with connecting leg with between gutter;
(7) flushing test is carried out;
(8) pumping conduit and water pump are installed, and carry out test of drawing water;
(9) backfill is to reservoir end face, installs vertical connecting leg, filter screen;
(10) backfill is to pavement-height, installs reservoir concrete top cover.
Advantage of the present invention is with effect: because groundwater reservoir is connected with rain drainage pipe, so can be shunted by groundwater reservoir during heavy rain, substantially increases capacity of flood storage; Sidewall arranges hole, and in storehouse, water can slowly permeate the ground, and supplements underground water, can alleviate the pressure of Urban Underground water shortage; The water of groundwater reservoir can be retracted to ground by water pump, carries out the irrigation of ground green plants.The hard grounds such as the concrete of city not draining and pitch are become " flexibility " ground that can " absorb water " by the present invention, thus solve city big flood and arid two problems, and urban rainwater " is turned bane into boon ".Work progress of the present invention is simple, is easy to implement, and on existing urban road, transformation only need close track, local, and other tracks can normal pass.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Protection scope of the present invention is not limited with detailed description of the invention, but is limited by claim.
Accompanying drawing explanation
Fig. 1 is lower storage reservoir and rain drainage pipe cross-sectional drawing individually;
Fig. 2 underground Miniature water depositary management network arrangements figure;
Fig. 3 road Cross Section figure;
Fig. 4 profile of road figure;
Fig. 5 groundwater reservoir stereogram;
Fig. 6 groundwater reservoir front schematic view;
The T-shaped gutter schematic diagram of Fig. 7;
In figure: 1: the miniature reservoir in underground; 2:T shape gutter; 3: reservoir bottom plate hole; 4: direct-connected pipe; 5: vertically connecting leg; 6: rain-water drainage house steward; 7: straight drinking-water pipe; 8: draw water curved connecting leg; 9: suction pump; 10: pump house; 11: motorway; 12: relief road; 13: sidewalk; 14: vertically rain pipe; 15: central partition; 16: groundwater reservoir top cover; 17: reservoir areole.
Detailed description of the invention
As shown in Fig. 1 ~ Fig. 7, the miniature groundwater reservoir 1 in a kind of city, surrounding is formed by concrete cast-in-situ, and then miniature groundwater reservoir 1 is connected with T-shaped gutter 2 after being connected with direct-connected pipe 4, and two other direction of T-shaped gutter 2 is then directly connected with rain-water drainage house steward 6; Miniature groundwater reservoir 1 stretches into central partition 15 by vertical connecting leg 5, bottom auxiliary road 12 or sidewalk 13; Rainwater on auxiliary road 12 and sidewalk 13 is flowed in rain-water drainage house steward 6 by vertical rain pipe 14 and imports miniature groundwater reservoir 1; Water on motorway 11 flows into miniature groundwater reservoir 1 by vertical connecting leg 5; In side, more than 1/4 to 1/3 scope has reservoir areole 17 to the miniature reservoir 1 in underground, and the water in miniature groundwater reservoir 1 can be permeated the ground; After water pump 9 installed by pump house 10, the water in miniature reservoir can also be extracted into ground by the pipe network that draws water of straight drinking-water pipe 7 and curved connecting leg 8 composition that draws water; Concrete top cover 16 is arranged at vertical connecting leg 5 top, to protect vehicle and pedestrains safety, and simultaneously can for maintenance.
The construction party of the miniature reservoir in above-mentioned underground, has following technical step:
(1) town road central partition 15 is explored, not only longitudinally will explore road here, also will explore road depth direction.To the town road of existing survey data, data with existing can be adopted.
(2) according to exploration data, select the better soil layer of water permeability as reservoir position, for ease of pipe laying, make each reservoir longitudinally keep on one wire, and mutual spacing is at 10 ~ 20m as far as possible.
(3) miniature groundwater reservoir 1 unwrapping wire location, is excavated to projected depth.
(4) formwork supporting plate, builds reservoir concrete and will note reserved connecting leg hole, drinking-water pipe hole, sidewall and base plate hole, maintenance.The Admixture that there is diminishing, slow setting and increase durability should be mixed when joining concrete in concrete, and mix appropriate high-quality admixture, as flyash etc., to improve concrete workability, improve durability and impermeability.
(5) in reservoir areole 17, clay is filled in.Select the good sandy gravel of grating to be layered on bottom miniature groundwater reservoir 1, avoid clay local failure because water washes away, the larger sandy gravel of some particle diameters can be spread at clay top.
(6) gutter unwrapping wire location, installs filter screen, T-shaped gutter 2 and direct-connected pipe 4 successively.T-shaped gutter 2 and direct-connected pipe 4 should need prefabricated according to design before construction.The place of joint, should tamp with cement mortar and waterproofing materials.
(7) step of 4 ~ 6 is repeated, until one group of miniature reservoir in underground 1 is connected with there being direct-connected pipe 4 between rain-water drainage house steward 6.Often organize the quantity of the miniature reservoir 1 in underground, determine according to actual rainwater drainage pipe flow, be generally 3 ~ 8 one groups.
(8) carry out flushing test, water flowing in total 6 pipes of rain-water drainage, tests each reservoir and whether connecting leg is unimpeded, and the place leaked appears in process in time.
(9) be connected reliably at each reservoir of confirmation with rain-water drainage house steward 6, drainage system, without after leakage point, installs straight drinking-water pipe 7, and draw water curved connecting leg 8 and suction pump 9, and carry out test of drawing water.First install straight drinking-water pipe 7 during installation, make straight drinking-water pipe 7 contact with miniature groundwater reservoir 1 as far as possible, then install the curved connecting leg 8 that draws water, the curved connecting leg 8 that draws water stretches into distance underground, miniature reservoir 1 end, underground miniature reservoir 1 base plate and is not more than 50 ~ 200mm.
(10) backfill is to miniature groundwater reservoir 1 end face, installs vertical connecting leg 5 and filter screen; 11 backfill, to pavement-height, install miniature groundwater reservoir top cover 16.
Embodiment:
See the schematic cross-sectional view in Fig. 1, figure being certain road.Central partition 15 in the middle of this road.Central partition 15 both sides are two-way motorways 11.The outside of two motorways 11 is all relief roads 12.The outside of relief road 12 is sidewalks 13.
See Fig. 3,5 and 6, figure shown in be a miniature reservoir 1 in underground.The miniature reservoir in underground 1 is made up of vertical connecting leg 5, sidewall and base plate.Described base plate is built up by concrete casting.Described sidewall is the hollow cylinder built up by concrete casting.The lower end of described hollow cylinder is buckled in the upper surface of described base plate.The upper end closed of described hollow cylinder, but leave a through hole, the lower end mouth of pipe of described vertical connecting leg 5 is communicated with this through hole.When building described sidewall, reserved some areoles 17 on sidewall.Preferably, clay is filled in described areole 17.
Further, the closed upper end of described hollow cylinder, except connecting described vertical connecting leg 5, also has a suction eye.As Fig. 4, the lower end of the curved connecting leg 8 that draws water is inserted in this suction eye, and reaches the bottom of the inner chamber of hollow cylinder.The draw water upper end of curved connecting leg 8 is communicated with straight drinking-water pipe 7.By starting the suction pump 9 (being arranged in pump house 10) be connected with straight drinking-water pipe 7, the water of miniature for underground reservoir 1 can be extracted out; Or to water filling in the miniature reservoir 1 in underground, to check seal.
Fig. 1 illustrates the miniature reservoir 1 in five undergrounds of setting.The vertical connecting leg 5 of the miniature reservoir in these undergrounds 1 lays respectively at below central partition 15, motorway 11 and relief road 12 intermediate isolating band (or greenbelt) below, relief road 12 and below, sidewalk 13 intermediate isolating band (or greenbelt).Vertical connecting leg 5 upper end outlet is provided with groundwater reservoir top cover 16.Fig. 2 illustrates the miniature reservoir 1 in four undergrounds of setting equally.The vertical connecting leg 5 of the miniature reservoir in these undergrounds 1 is positioned at relief road 12 and below, sidewalk 13 intermediate isolating band (or greenbelt).
When building described sidewall, sidewall is also reserved with a connecting hole.A mouth of pipe of direct-connected pipe 4 is communicated with this connecting hole.See Fig. 3, described direct-connected pipe 4 tilts, and the one end be connected with described connecting hole sweeps away.See being T-shaped gutter 2 shown in Fig. 7, figure, this T-shaped gutter 2 has three mouths of pipe (being similar to threeway).See Fig. 4, the miniature reservoir 1 in several undergrounds is arranged side by side, and the miniature reservoir in each underground 1 connects and all connects a direct-connected pipe 4.A mouth of pipe (that mouth of pipe tilted upward) of these direct-connected pipes 4 is all connected with a T-shaped gutter 2.Can some pipelines be passed through, the mouth of pipe that these T-shaped gutters 2 are not connected with direct-connected pipe 4 is together in series, composition rain-water drainage house steward 6.Usually, 3 ~ 8 miniature reservoirs 1 in underground are combined as one group (having connected as Fig. 2,4 four), by pipeline, the T-shaped gutter 2 of miniature for the underground described in group reservoir 1 are together in series, composition rain-water drainage house steward 6.Described rain-water drainage house steward 6 is positioned at below road, is connected with the drainage on road surface.In the present embodiment, during construction, should ensure that all pipelines reliably connect, and can not leak.
What deserves to be explained is, the miniature reservoir 1 in these undergrounds is the reservoir be embedded under road.Rain-water drainage house steward 6 is connected with municipal drainage system against rain, and underground miniature reservoir 1 end face absolute altitude flushes with the axis of rain-water drainage house steward 6.During heavy rain, rainwater automatically flows into miniature reservoir 1 by municipal drain and stores.After the water in miniature reservoir 1 stores completely, unnecessary water still can be drained from municipal drainage system against rain.In miniature reservoir 1, water body may be used for municipal greening irrigation, urban fire control etc.Due to the existence of reservoir areole 17, make the water in miniature reservoir 1 slowly can infiltrate foundation soil body, recharge of groundwater.Because multiple described miniature reservoir 1 is connected, when some miniature reservoir 1 moisture storage capacitys are too much, share other reservoirs by rainwater drainage pipe.
Claims (7)
1. the miniature groundwater reservoir in city, is characterized in that: be made up of the reservoir of several band top covers being embedded in underground, reservoir is connected with municipal rain drainage pipe, and reservoir end face absolute altitude flushes with the axis of rain drainage pipe; Miniature water warehouse compartment is below the auxiliary road of urban road and greenbelt; On road and the rainwater of road periphery flow into reservoir by gutter; When raining, rainwater automatically flows into miniature reservoir by gutter and stores, and after the water in reservoir stores completely, unnecessary water is still drained from rain drainage pipe; In reservoir, water body is used for municipal greening irrigation, urban fire control; Reservoir side arranges small hole, and the part water body in miniature reservoir slowly penetrates into foundation soil, recharge of groundwater, improves groundwater environment.
2. the miniature groundwater reservoir in a kind of city according to claim 1, is characterized in that: when the water of miniature reservoir is not stored full, and the rainwater flowing into municipal rain drainage pipe preferentially enters miniature reservoir and stores, and when the water storage of miniature reservoir is full, unnecessary water is drained.
3. the miniature groundwater reservoir in a kind of city according to claim 1, is characterized in that: miniature reservoir has multiple reservoir and is connected with rain drainage pipe in underground, when a certain reservoir hypervolia, share other reservoirs by rainwater drainage pipe.
4. the miniature groundwater reservoir in a kind of city according to claim 1, is characterized in that: miniature reservoir reservoir has removable top cover, with water pump, the water extraction in reservoir can be used for municipal greening irrigation when needing.
5. the miniature groundwater reservoir in a kind of city according to claim 1, is characterized in that: miniature reservoir surrounding concrete cast-in-situ, and side arranges some small holes, the clay sealing that hole permeability is less, and water can slowly be permeated the ground.
6. the miniature groundwater reservoir in a kind of city according to claim 1, is characterized in that: miniature reservoir is in the prefabricated shaping of factory's glass fiber reinforced plastic, and side arranges some small holes, the clay sealing that hole permeability is less, and water can slowly be permeated the ground.
7. the construction method of the miniature groundwater reservoir in a kind of city according to claim 1, comprises the following steps:
(1) carry out geological prospecting, surveying setting-out, below determining the auxiliary road of urban road and greenbelt, Miniature water warehouse compartment is put;
(2) be excavated to projected depth, generally make bottom reservoir lower than rain drainage pipe 2-3m;
(3) installation form, builds reservoir concrete, reserving hole, carries out concrete curing;
(4) concrete curing 28 days intensity qualified after, in the hole of side, fill in clay, and hole top should spread the sandstone of one deck Large stone, prevent clay local failure because of washing away of water;
(5) gutter unwrapping wire location, installs filter screen, T-shaped gutter and direct-connected pipe successively;
(6) step of (2) ~ (5) is repeated, until all reservoirs are connected with connecting leg with between gutter;
(7) flushing test is carried out;
(8) pumping conduit and water pump are installed, and carry out test of drawing water;
(9) backfill is to reservoir end face, installs vertical connecting leg, filter screen;
(10) backfill is to pavement-height, installs reservoir concrete top cover.
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Cited By (8)
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| CN106351286A (en) * | 2016-10-17 | 2017-01-25 | 重庆大学 | Coral reef sand underground freshwater reserving and using method |
| CN107587565A (en) * | 2017-09-15 | 2018-01-16 | 神华集团有限责任公司 | A kind of groundwater reservoir drainage equipment and its control method |
| CN107642015A (en) * | 2016-07-20 | 2018-01-30 | 章锐 | Returning to the field urban flood defence water storage rural area highway |
| CN107653957A (en) * | 2017-09-15 | 2018-02-02 | 神华集团有限责任公司 | A kind of groundwater reservoir drainage system and its control method |
| CN107653956A (en) * | 2016-07-26 | 2018-02-02 | 饶有义 | A kind of urban rainwater collection utilizes system |
| CN109183944A (en) * | 2018-08-25 | 2019-01-11 | 浙江省水利河口研究院 | A kind of city cavernous body with well |
| CN109403450A (en) * | 2018-10-12 | 2019-03-01 | 河海大学 | A kind of environment-friendly type underground aqua storage tank for road drainage under Rainfall Condition |
| CN109736417A (en) * | 2018-12-18 | 2019-05-10 | 温州国盛建设有限公司 | Rustic home water flood control system and flood control system construction process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107642015A (en) * | 2016-07-20 | 2018-01-30 | 章锐 | Returning to the field urban flood defence water storage rural area highway |
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| CN109736417A (en) * | 2018-12-18 | 2019-05-10 | 温州国盛建设有限公司 | Rustic home water flood control system and flood control system construction process |
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| CN104847010B (en) | 2017-03-15 |
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