CN208633235U

CN208633235U - A kind of sandstone seepage well suitable for sponge urban construction

Info

Publication number: CN208633235U
Application number: CN201821256051.0U
Authority: CN
Inventors: 司涛涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-06
Filing date: 2018-08-06
Publication date: 2019-03-22
Anticipated expiration: 2028-08-06

Abstract

The utility model provides a kind of sandstone seepage well suitable for sponge urban construction, including foundation pit (1), the different multiple precipitation pipe wells (2) of spaced height and draw seepage well (3) in foundation pit, higher precipitation pipe well (2-1) depth is 25m, well is played for existing earth's surface, lower precipitation pipe well (2-2) depth is 18.0m, the well from the 10m of underground, arrangement is multiple in precipitation pipe well draws seepage hole (4), it is separately positioned on that depth is 19m and depth is at 9m, draw in seepage hole (4) and fills gravel material (5), precipitation pipe well (2) opening diameter is 700mm, inside setting filter pipe (6), the higher seepage well (3-1) and lower draw seepage well (3-2) of drawing is that multiple seepage well holes (7) are excavated in the soil body.Using precipitation pipe well and draw seepage well and combine to form sandstone seepage well, adapt to sponge urban construction, increase milliosmolarity under surface water, improves surface water infiltration rate.

Description

A kind of sandstone seepage well suitable for sponge urban construction

Technical field

The utility model relates to soil body penetration application field, especially a kind of sandstone suitable for sponge urban construction seeps Well increases milliosmolarity under surface water, improves surface water infiltration rate.

Background technique

Sponge city as the term suggests being to realize control Urban Flood Waterlogging, while can rationally be maintained using rainwater again Good hydrology ecological environment.Sponge city is new generation of city storm water man- agement concept, refer to city adapt to environmental change and Coping with rainwater bring natural calamity etc. has good " elasticity ", also referred to as " water elasticity city ".It is international Term is " storm-water system building is developed in low influence ", that is, water suction, water storage, infiltration, water purification when raining, the water that will be stored when needing " release " is simultaneously used.

China's urban rainwater processing technique is started late, and is studied since the 1980s, the benefit of rainwater resource With small-sized, the local non-standard application for being concentrated mainly on some arid and semi-arid regions.China's sponge urban construction Theory and practice be faced with economy, social development there is an urgent need to the situation of raising, existing sponge city are waited for existing level City's construction mostly uses greenery patches, water system, municipal drainage, porous pavement to be designed greatly, fails to reach the economical and practical utilization soil body The ability of itself water storage water purification.Conventional permeability apparatus based on the seepage well of concrete or half concrete material, construct by concrete The appearance of object largely reduces the area coverage of original soil body, destroys original soil structure, permeates the infiltration ability of structures By the obstruction of concrete, cause to reduce with soil body contact area, osmotic effect is bad.

Summary of the invention

In order to overcome the problems, such as structure of the existing technology, the utility model provides a kind of suitable for sponge urban construction Sandstone seepage well, to solve the problems mentioned in the above background technology.

To achieve the above object, the utility model provides the following technical solutions:

A kind of sandstone seepage well suitable for sponge urban construction, including foundation pit (1), spaced height is different in foundation pit Multiple precipitation pipe wells (2) and draw seepage well (3), wherein higher precipitation pipe well (2-1) depth be 25m, for existing earth's surface Well is played, lower precipitation pipe well (2-2) depth is 18.0m, and the well from the 10m of underground, the interior arrangement of precipitation pipe well is multiple to draw seepage hole (4), be separately positioned on that depth is 19m and depth is at 9m, it is described draw in seepage hole (4) fill gravel material (5), the precipitation pipe well is opened Mouthful diameter is 700mm, inside setting filter pipe (6), it is described it is higher draw seepage well (3-1) and it is lower draw seepage well (3-2) for Multiple seepage well holes (7) are excavated in the soil body, structures are formed using medium coarse sand (8) filling, the higher seepage well (3-1) that draws is 19.0m, lower draw seepage well (3-2) is 9.0m.

Preferably, filter pipe (6) internal diameter is 500mm, and the filter pipe (6) is mixed using gravel concrete filter pipe or without sand Solidifying soil filter pipe, porosity are not less than 10%.

Preferably, the filler specification of the filter pipe (6) is the natural round gravel of 3-7mm.

Preferably, the outer layer of the precipitation pipe well (2) also sets up sediment tube (9), for precipitating pollutant, prevents blocking institute State filter pipe (6).

It preferably, further include the collector pipe (10) being arranged in outside foundation pit, the collector pipe (10) is the casting that diameter is 300mm Iron collector pipe, for carrying out organized draining.

Compared with prior art, the utility model design uses precipitation pipe well and draws seepage well and combines to form sandstone seepage well Strategy has adapted to sponge urban construction, increases milliosmolarity under surface water, improves surface water infiltration rate.

According to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will be more Add the above-mentioned and other purposes, advantages and features of clear the utility model.

Detailed description of the invention

Some specific realities of the utility model are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter Apply example.Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that The drawings are not necessarily drawn to scale.The target and feature of the utility model will more in view of following description taken together with the accompanying drawings Add obviously, in attached drawing:

Attached drawing 1 is the sandstone seepage well structural schematic diagram suitable for sponge urban construction according to the utility model embodiment.

In figure: 1- foundation pit, 2- precipitation pipe well, 3- draw the higher precipitation pipe well of seepage well, 2-1-, the lower downcomer of 2-2- Well, 4- draw seepage hole, 5- gravel material, 6- filter pipe, 7- seepage well hole, 8- medium coarse sand, 9- sediment tube, 10- collector pipe.

Specific embodiment

Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing, but is not intended to limit this reality With novel protection scope.

The sandstone seepage well is mainly according to the urban engineering geology condition design in the list of sponge city, most of water-bearing layer Holocene series rushes sand and its lower each layer in 2 layers of proluvial, and permeability is good, but 4 layers of silty clay have blocked up and down as aquiclude The circulation of layer underground water when beating such as dewatering well to 4 layers of silty clay top, since substrate to 4 layers of top surface is apart from smaller, is unsatisfactory for dropping The requirement of well sand setting length of tube, dewatering well penetrate 4 layers of silty clay, at the same should in hole and the outer setting in hole it is several draw seepage hole with 4 layers of silty clay are penetrated, effective circulation is formed.

The dewatering model of foundation assumes that the infiltration coefficient of layer 6 silty clay is much smaller than the infiltration coefficient of other soil layers, closely Like layer 6 is considered as impermeable stratum, according to " engineering geology handbook ", pipe well depth is determined as, and well-point pipe depth is dewatering well Depth, foundation depth, the depth that precipitation water level is required apart from foundation pit bottom, increased depth needed for hydraulic gradient acts on foundation pit center Degree, level of ground water amplitude changes during precipitation, the working level and sediment tube or sand setting length of tube of precipitation well tube filter it With, while needing to consider the influence of foundation pit equivalent redius, infiltration coefficient, Rainfall Influence radius and total yield.

Referring to attached drawing 1, in the utility model embodiment, a kind of sandstone seepage well suitable for sponge urban construction, including base Seepage well 3 the different multiple precipitation pipe wells 2 of spaced height and is drawn in foundation pit, wherein higher precipitation pipe well 2-1 in hole 1 Depth is 25m, plays well for existing earth's surface, lower precipitation pipe well 2-2 depth is 18.0m, the well from the 10m of underground, precipitation pipe well Interior arrangement is multiple to draw seepage hole 4, is separately positioned on that depth is 19m and depth is to draw at 9m and fill gravel material 5 in seepage hole 4, precipitation pipe well Opening diameter is 700mm, inside setting filter pipe 6, and 6 internal diameter of filter pipe is 500mm, filter pipe 6 using gravel concrete filter pipe or Sand-free concrete water-filtering pipe, porosity are not less than 10%, and the filler specification of filter pipe 6 is the natural round gravel of 3-7mm, higher to draw The seepage well 3-1 and lower seepage well 3-2 that draws is that multiple seepage well holes 7 are excavated in the soil body, forms structures using the filling of medium coarse sand 8, The higher seepage well 3-1 that draws is 19.0m, and the lower seepage well 3-2 that draws is 9.0m.Sediment tube 9 is arranged in the outer layer of precipitation pipe well 2, is used for Pollutant is precipitated, blocking filter pipe 6 is prevented.Collector pipe 10 is arranged in outside foundation pit, and collector pipe 10 is the cast iron that diameter is 300mm Collector pipe, for carrying out organized draining.

Targetedly Design of Construction Organization, the quality of tube well construction are directly related to precipitation for progress before tube well dewatering construction Effect has strict demand to pipe well construction method, creeps into and uses rotary inverse circulation drilling machine, after drilling, tripping in immediately Well casing, well casing are located at the center in hole, guarantee well casing placement smoothly, filtrate is put into around well casing, and filtrate is filled to projected depth, After stable level is taken out in examination, cast media is mended in time, is guaranteed that filtrate throwing amount should be no less than the 95% of calculated value, is then filled out using cohesive soil To ground, and closed orifices are compacted, prevent the infiltration of the surface water.Draw seepage hole 4 to be drilled using DPP100-4 type drill truck, Aperture is 150mm, and drilling depth is drawn water using electric submersible pump to dewatering well, power is using penetrating 4 layers of silty clay as principle 4.5km, lift 36m, 30 cubes ms/h of pump amount.

In use, using precipitation pipe well and seepage well can be drawn simultaneously, increase displacement when flood season arrives, and when drought period is come Face, the most of moisture of storage can be discharged by drawing seepage well mainly, and precipitation pipe well can assist making the water release of storage for city With.

The utility model embodiment, which uses precipitation pipe well and draws seepage well, combines the strategy to form sandstone seepage well, has adapted to sea Continuous urban construction increases milliosmolarity under surface water, improves surface water infiltration rate.

Technical solution provided by the utility model embodiment is described in detail above, it is used herein specifically A example is expounded the principle and embodiment of the utility model embodiment, and the explanation of above embodiments is only applicable to help Assistant solves the principle of the utility model embodiment；Those of ordinary skill in the art simultaneously, embodiment according to the present utility model, There will be changes in terms of specific embodiments and scope of application, in conclusion the content of the present specification should not be construed as pair The limitation of the utility model.

Claims

1. a kind of sandstone seepage well suitable for sponge urban construction, it is characterised in that: including foundation pit (1), interval is arranged in foundation pit The different multiple precipitation pipe wells (2) of height and draw seepage well (3), wherein higher precipitation pipe well (2-1) depth is 25m plays well for existing earth's surface, and lower precipitation pipe well (2-2) depth is 18.0m, the well from the 10m of underground, in precipitation pipe well (2) Arrange it is multiple draw seepage hole (4), be separately positioned on that depth is 19m and depth is at 9m, it is described draw in seepage hole (4) fill gravel material (5), The precipitation pipe well opening diameter is 700mm, inside setting filter pipe (6), described higher to draw seepage well (3-1) and lower draw Seepage well (3-2) is that multiple seepage well holes (7) are excavated in the soil body, forms structures using medium coarse sand (8) filling, described higher to draw Seepage well (3-1) is 19.0m, and lower draw seepage well (3-2) is 9.0m.

2. a kind of sandstone seepage well suitable for sponge urban construction according to claim 1, it is characterised in that: the drainage Pipe (6) internal diameter is 500mm, and the filter pipe (6) is not less than using gravel concrete filter pipe or sand-free concrete water-filtering pipe, porosity 10%.

3. a kind of sandstone seepage well suitable for sponge urban construction according to claim 1, it is characterised in that: the drainage The filler specification for managing (6) is the natural round gravel of 3-7mm.

4. a kind of sandstone seepage well suitable for sponge urban construction according to claim 1, it is characterised in that: the precipitation The outer layer of pipe well (2) also sets up sediment tube (9), for precipitating pollutant, prevents from blocking the filter pipe (6).

5. a kind of sandstone seepage well suitable for sponge urban construction according to claim 1, it is characterised in that: further include setting The collector pipe (10) outside foundation pit is set, the collector pipe (10) is the cast iron collector pipe that diameter is 300mm, organized for carrying out The draining of property.