CN203462480U

CN203462480U - Device for lowering underground water level by using home-made small tube wells

Info

Publication number: CN203462480U
Application number: CN201320524780.0U
Authority: CN
Inventors: 银克俭; 曹德佳; 马平
Original assignee: China Construction Fourth Bureau First Construction Engineering Co Ltd
Current assignee: China Construction Fourth Bureau First Construction Engineering Co Ltd
Priority date: 2013-08-27
Filing date: 2013-08-27
Publication date: 2014-03-05
Anticipated expiration: 2023-08-27

Abstract

The utility model discloses a device for lowering an underground water level by using home-made small tube wells. The device comprises a group of home-made small tube wells uniformly distributed around the bottom of a foundation pit, wherein filter tubes are arranged in the home-made small well tubes; the upper tube orifice of each home-made small tube well is 500 millimeters higher than the well mouth of each home-made small tube well; a filtering material is filled between each filter tube and each home-made small tube well; a water pump is arranged in the well mouth of each home-made small tube well; the tube orifice of a water pumping tube of each water pump is positioned at the bottom of each filter tube; a water outlet tube of each water pump is connected with a settling pond on the top of the foundation pit; a drain tube of the settling pond is connected with a drainage ditch. According to a home-made small tube well precipitation system disclosed by the utility model, the underground water level close to a well point can be lowered in a short time; when a plurality of tube well precipitation points are used together, a water-blocking ring is formed on the periphery of the foundation pit, so that the underground water level inside the foundation pit can be lowered to a position meeting the construction requirement. The device has the advantages of easiness in drawing materials, easiness and convenience in machining, easiness in construction operation, small well completion range and remarkable precipitation effect.

Description

A kind of device that utilizes self-control tubule well dewatering

Technical field

the utility model relates to a kind of device that utilizes self-control tubule well dewatering, belongs to local dewatering technical field.

Background technology

development along with modern economy, highrise building has become the main trend of modern architecture development, highrise building adopts mat foundation more, box foundation or pile-raft foundation, according to designing requirement, the embeded depth of foundation of building generally should not be less than 1/15 of depth of building, in current highrise building, the structure height 99m that adopt are example more, building foundation buried depth is approximately 7m, if basement is double-deck, its embeded depth of foundation may be darker, so, such engineering is when basic earthwork excavates, great majority all can run into underground water, precipitation problem becomes a great problem of building operations.At present, mainly to adopt powerful water pump to draw water and the mode of draining is carried out dewatering in the prior art, existing this processing mode, draw water and draining in, the water of its discharge again rapid permeability in foundation ditch, thereby greatly reduce the effect of the precipitation that draws water.So existing this dewatering mode not only exists the problem that inefficiency, construction cost are high, the construction period is long, but also exist the problems such as dewatering effect is poor.Therefore, the mode of existing dewatering is very undesirable.

Summary of the invention

the purpose of this utility model is, a kind of device easy, that dewatering effect utilizes self-control tubule well dewatering preferably of constructing is provided, and to solve the precipitation problem running in foundation construction process, thereby overcomes the deficiencies in the prior art.

the technical solution of the utility model:

a kind of device that utilizes self-control tubule well dewatering, comprise that being distributed in a group of foundation ditch bottom surrounding makes little pipe well by oneself, make by oneself in little pipe well and be provided with filter pipe, the upper orifice of filter pipe, higher than self-control tubule well well head 500mm, is provided with filtrate between filter pipe and the little pipe well of self-control; The well head of making little pipe well by oneself is provided with water pump, and the drinking-water pipe mouth of pipe of water pump is positioned at the bottom of filter pipe, and the outlet pipe of water pump is connected with the sedimentation basin at foundation ditch top; The gutter of sedimentation basin is connected with gutter.

in aforementioned means, described filtrate is cobble more than the particle diameter 100mm being filled between filter pipe and the little pipe well of self-control.

in aforementioned means, described water pump bottom is provided with platform, and platform is higher than the upper orifice of filter pipe.

in aforementioned means, described filter pipe comprises well casing, and well casing is positioned at the following part of foundation ditch elevation of bottom and is evenly equipped with filter opening, and the well casing outside filter opening is provided with filter screen, and the bottom in well casing is provided with coarse sands layer, is provided with macadam on coarse sands layer.

in aforementioned means, described filter screen is the layer of steel wire net of the filter opening outer wrapping on well casing.

in aforementioned means, described well casing bottom is provided with shrouding, is evenly equipped with filter opening on shrouding, and filter opening is provided with filter screen outward; Well casing top is provided with well lid, and well lid is provided with the through hole passing through for pumping for water pump pipe.

compared with prior art, it is little that the utility model is applicable to precipitation depth, adopts the engineering of the bright well precipitation in foundation ditch bottom, is also applicable to adopt after the precipitation methods such as the outer precipitation in hole or water-stop curtain simultaneously, still has the engineering of open fire in foundation ditch.Be specially adapted to that precipitation depth is little but groundwater resources abundant, foundation soil transmission coefficient is large, the engineering that groundwater discharge is large, this self-control tubule well precipitation system can reduce near groundwater table well point at short notice, during the common use of a plurality of tube well dewatering points, will form a sealing collar at foundation ditch periphery, the groundwater table of foundation ditch inside is down to the position that meets construction requirement.The utility model is drawn materials simply, is processed simple and convenient, and constructing operation is simple, becomes well scope little, and dewatering effect is obvious.

Accompanying drawing explanation

fig. 1 is structural representation of the present utility model;

fig. 2 is the structural representation of filter pipe.

being labeled as in accompanying drawing: 1-makes little pipe well, 2-filter pipe, 3-filtrate, 4-water pump, 5-drinking-water pipe, 6-outlet pipe, 7-sedimentation basin, 8-gutter, 9-well casing, 10-filter opening, 11-filter screen, 12-coarse sands layer, 13-macadam, 14-well lid, 15-through hole, 16-foundation ditch by oneself and faces that frontier defense is protected, 17-platform.

The specific embodiment

below in conjunction with accompanying drawing, the utility model is described in further detail, but not as to any restriction of the present utility model.

the utility model is constructed according to a kind of following method of self-control tubule well dewatering of utilizing, and as shown in Figure 1, the method is made little pipe well by oneself by arranging one group in foundation ditch bottom, and foundation ditch bottom, one group of self-control tubule well surrounding is uniform.By water pump, the water infiltrating in the little pipe well of self-control is extracted into the gutter at foundation ditch top simultaneously, thereby forms a sealing collar at foundation ditch periphery; Making to make by oneself near the groundwater table of little pipe well can not be seeped in foundation ditch, to meet foundation pit construction requirement at short notice.Described water pump adopts 40WBZ6.3-16C or 50ZWL15-30 type high-delieving-head self-suction pump, the drinking-water pipe of self priming pump inserts the macadam surface location of filter pipe bottom, the outlet pipe of self priming pump extends to the sedimentation basin at foundation ditch top, and the underground water of extraction drains into gutter after precipitation.

the construction sequence of the little pipe well of described self-control is as follows:

step 1, making filter pipe; The steel pipe manufacturing that is 300mm with diameter, 5mm steel plate sealing weldering for steel pipe bottom, in the hole of steel pipe bottom and some diameter 30mm of side face drilling, pitch-row 80mm, then rolls up layer of steel wire net outward at steel pipe and fixes;

step 2, in foundation ditch, dig pipe well; The degree of depth of pipe well is 2-3 rice, and diameter is 0.8-1 rice;

step 3, filter pipe is vertically inserted in pipe well, filter pipe top is higher than pipe well mouth 500mm; At the thick coarse sands layer of filter pipe bottom paving 200mm, then at the thick macadam of coarse sands layer upper berth 300mm;

step 4, with the cobble that particle diameter is not less than 100mm, fill up the gap between filter pipe and pipe well.

the structural representation of the of the present utility model a kind of device that utilizes self-control tubule well dewatering building according to said method as depicted in figs. 1 and 2, this device comprises the one group of self-control tubule well 1 that is distributed in foundation ditch bottom surrounding, in self-control tubule well 1, be provided with filter pipe 2, the upper orifice of filter pipe 2, higher than self-control tubule well 1 well head 500mm, is provided with filtrate 3 between filter pipe 2 and self-control tubule well 1; The well head of self-control tubule well 1 is provided with water pump 4, and drinking-water pipe 5 mouths of pipe of water pump 4 are positioned at the bottom of filter pipe 2, and the outlet pipe 6 of water pump 4 is connected with the sedimentation basin 7 at foundation ditch top; The gutter of sedimentation basin 7 is connected with gutter 8.Described filtrate 3 is cobbles more than the particle diameter 100mm being filled between filter pipe 2 and self-control tubule well 1.Described water pump 4 bottoms are provided with platform 17, and platform 17 is higher than the upper orifice of filter pipe 2.Described filter pipe 2 as shown in Figure 2, comprises well casing 9, and well casing 9 is positioned at the following part of foundation ditch elevation of bottom and is evenly equipped with filter opening 10, and the well casing 9 outside filter opening 10 is provided with filter screen 11, and the bottom in well casing 9 is provided with coarse sands layer 12, is provided with macadam 13 on coarse sands layer 12.Described filter screen 11 is layer of steel wire nets of filter opening 10 outer wrapping on well casing 9.Described well casing 9 bottoms are provided with shrouding, are evenly equipped with filter opening 10 on shrouding, and filter opening is provided with filter screen 11 outward; Well casing 9 tops are provided with well lid 14, and well lid 14 is provided with the through hole 15 passing through for pumping for water pump pipe 5.

Embodiment

during concrete enforcement, as shown in Figure 1.Along foundation ditch bottom surrounding, dig uniformly the about 2 meters of left and right of some degree of depth, the dewatering well of 0.8 meter of left and right of diameter.Then by length, be greater than dewatering well degree of depth 500mm left and right, the steel pipe well casing 9 of diameter 300mm is made filter pipe 2.The steel plate sealing that 5mm is thick is used in well casing 9 bottoms, then use electrogas welding at sidewall and the bottom cutting filter opening 10 of pipe well 9, filter opening 10 diameter 30mm, the vertical horizontal spacing of filter opening 10 is all in 80mm left and right, whole well casing need to be embedded in below ground part all needs to cut filter opening 10, after filter opening 10 cuttings, in well casing 9 outsides, with gauze wire cloth, seal parcel, as filter screen 11.After filter pipe 2 is made, filter pipe 2 is had to 11 1 sections of shaft bottoms of vertically standing on dewatering well of filter screen, 500mm left and right, foundation ditch bottom is exposed in filter pipe 2 upper ends.Then in filter pipe 2 bottoms, first spread the thick coarse sands layer in 200mm left and right 12, then on coarse sands layer 12, repave the thick macadam in 300mm left and right 13, formed sand filter blanket.The cobble that finally uses particle diameter to be greater than 100mm in well casing 9 outsides is filled well casing 9 jam-packeds, be convenient to like this form water channel at well casing 9 peripheries, prevent that filter screen 11 and filter opening 10 from being blocked by sandstone, affect dewatering effect, finally a well lid 14 is set well casing 9 is suitable for reading, on well lid 14, open a through hole 15, through hole 15 is opened at well lid 14 edges, drinking-water pipe 5 inserts in dewatering well from eccentric through hole 15, then use the high-delieving-head self-suction pump of 40WBZ6.3-16C type or two kinds of models of 50ZWL15-30 to draw water, discharge in the gutter 8 that underground water in infiltration pipe 2 is evacuated to foundation ditch top by outlet pipe 6.During normal use, well lid 14 seals the mouth of pipe, to prevent that foreign material from falling in dewatering well, while checking in well water level, only needs rotating well cover 14 can check water level situation in well.

Claims

1. one kind is utilized the device of making tubule well dewatering by oneself, it is characterized in that: comprise that being distributed in a group of foundation ditch bottom surrounding makes little pipe well (1) by oneself, make by oneself and in little pipe well (1), be provided with filter pipe (2), the upper orifice of filter pipe (2), higher than self-control little pipe well (1) well head 500mm, is provided with filtrate (3) between filter pipe (2) and the little pipe well of self-control (1); The well head of making little pipe well (1) by oneself is provided with water pump (4), and drinking-water pipe (5) mouth of pipe of water pump (4) is positioned at the bottom of filter pipe (2), and the outlet pipe (6) of water pump (4) is connected with the sedimentation basin (7) at foundation ditch top; The gutter of sedimentation basin (7) is connected with gutter (8).

2. install according to claim 1, it is characterized in that: described filtrate (3) is cobble more than the particle diameter 100mm being filled between filter pipe (2) and the little pipe well of self-control (1).

3. install according to claim 1, it is characterized in that: described water pump (4) bottom is provided with platform (17), and platform (17) is higher than the upper orifice of filter pipe (2).

4. install according to claim 1, it is characterized in that: described filter pipe (2) comprises well casing (9), well casing (9) is positioned at the following part of foundation ditch elevation of bottom and is evenly equipped with filter opening (10), the outer well casing (9) of filter opening (10) is provided with filter screen (11), bottom in well casing (9) is provided with coarse sands layer (12), is provided with macadam (13) on coarse sands layer (12).

5. install according to claim 4, it is characterized in that: described filter screen (11) is the layer of steel wire net of filter opening (10) outer wrapping on well casing (9).

6. install according to claim 4, it is characterized in that: described well casing (9) bottom is provided with shrouding, is evenly equipped with filter opening (10) on shrouding, and filter opening is provided with filter screen (11) outward; Well casing (9) top is provided with well lid (14), and well lid (14) is provided with the through hole (15) passing through for pumping for water pump pipe.