CN205502044U - Be applied to precipitation structure in grittiness water -bearing stratum under building - Google Patents

Be applied to precipitation structure in grittiness water -bearing stratum under building Download PDF

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Publication number
CN205502044U
CN205502044U CN201620219561.5U CN201620219561U CN205502044U CN 205502044 U CN205502044 U CN 205502044U CN 201620219561 U CN201620219561 U CN 201620219561U CN 205502044 U CN205502044 U CN 205502044U
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China
Prior art keywords
water
precipitation
well casing
building
grittiness
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CN201620219561.5U
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Chinese (zh)
Inventor
顾国荣
李晓勇
刘冬
杨明义
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Shanghai Geotechnical Investigations and Design Institute Co Ltd
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Shanghai Geotechnical Investigations and Design Institute Co Ltd
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Priority to CN201620219561.5U priority Critical patent/CN205502044U/en
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Abstract

The utility model discloses a be applied to precipitation structure in grittiness water -bearing stratum under building, its characterized in that the precipitation structure is including running through well casing in the soil body of building bottom plate to below and set up in pumping device in the well casing, the well casing is closed by a plurality of knotted bar iron nests of tubes and forms. The utility model has the advantages that, this precipitation structure is formed simply, and the well casing that the merogenesis section is formed can adopt stock static pile technology to construct, and the counter -force that provides with the help of the major structure is through the static pressure method with a well point tub merogenesis following stratum of bottom plate to the designed elevation of impressing, owing to do not need pore -forming in advance, avoided the mud emission, filtering material is the soft pipe that permeates water of inside lining, and it is effectual to permeate water, sets up the convenience, can effectively reduce and both build building ground water level.

Description

A kind of it is applied to the Precipitation Structure in grittiness water-bearing layer under building
Technical field
This utility model relates to construction engineering technical field, is specifically related to a kind of be applied to the Precipitation Structure in grittiness water-bearing layer under building.
Background technology
When carrying out underground structure construction in the area that groundwater level is higher, generally use measures of preventing water to combine precipitation well point before excavation of foundation pit and level of ground water is controlled.But owing to sealing construction quality problems or dewatering measure are not in place, it sometimes appear that Leakage of Foundation Pit, if processing the most in time, being easily caused after underground structure completes, there is percolating water phenomenon in base plate or exterior wall.Usually needed to control below base plate by level of ground water before carrying out structural repair, for underground structure area bigger in the case of, layout well point, outside is difficult to meet precipitation requirement, it is therefore desirable to carry out dewatering operation in basement.
Conventional dewatering well uses rig to hole at ground, precipitation is carried out after hanging well casing and filling filtrate, for both building dewatering operation in underground structure, recover due to level of ground water to higher position (beyond base plate), head is higher, a large amount of silt particle serosity can be produced when using conventional dewatering well boring, and filtrate is difficult to fill, it is impossible to Cheng Jing.
Summary of the invention
The purpose of this utility model be according to above-mentioned the deficiencies in the prior art in place of, there is provided a kind of and be applied to the Precipitation Structure in grittiness water-bearing layer under building, well casing in this Precipitation Structure is by using segmented combining form, both it had been easy to being applied in combination of chimney filter and steel pipe, and had also allowed for being pressed in the soil body by well casing by anchor jacked pile technique merogenesis in the building of limited space.
This utility model purpose realizes being completed by techniques below scheme:
A kind of it is applied to the Precipitation Structure in grittiness water-bearing layer under building, it is characterized in that described Precipitation Structure includes running through described building base plate and to the well casing in the soil body of lower section and is arranged at the water plug in described well casing, described well casing is formed by some joint steel pipe combination.
It is welded to connect through sleeve pipe between adjacent described steel pipe.
Described water plug is by being positioned at the immersible pump of described well casing, the captation being positioned at outside described well casing and connecting both drinking-water pipe and form.
The described steel pipe of described well casing bottom is chimney filter.
The utility model has the advantages that, this Precipitation Structure composition is simple, and the well casing of segmented composition can use anchor jacked pile technique to construct, the counter-force provided by agent structure, by static pressure method by stratum below well-point pipe merogenesis press-in base plate to designed elevation;Owing to need not pore-forming in advance, it is to avoid mud emission, filtering material is the flexible porous tube of liner, permeable effective, arranges conveniently, can effectively reduce and both build building level of ground water.
Accompanying drawing explanation
Fig. 1 is that in this utility model, on base plate, the schematic diagram of anchor pole is buried in perforate underground;
Fig. 2 is the schematic diagram pressing downward to chimney filter in this utility model on base plate;
Fig. 3 is the schematic diagram of merogenesis press-in steel pipe in this utility model;
Fig. 4 is the schematic diagram in this utility model by well casing press-in to projected depth;
Fig. 5 is to put into immersible pump in this utility model and start the Precipitation Structure schematic diagram drawn water;
Fig. 6 is to cut off top well casing, the schematic diagram of base plate sealing of hole in this utility model.
Detailed description of the invention
Feature of the present utility model and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, in order to the understanding of technical staff of the same trade:
Such as Fig. 1-6, in figure, labelling 1-11 is respectively as follows: drinking-water pipe 1, base plate 2, anchor pole 3, hole 4, steel pipe 5, sleeve pipe 6, chimney filter 7, immersible pump 8, end plate 9, well casing 10, concrete 11.
Embodiment: as it is shown in figure 5, the present embodiment is specifically related to a kind of be applied to the Precipitation Structure in grittiness water-bearing layer under building, this Precipitation Structure includes the well casing 10 run through in building base plate 2 to soil layer and the water plug being disposed therein.
Well casing 10 in the vertical direction is combined by some joint steel pipes 5, and well casing 10 determines overall length according to the water-bearing layer degree of depth, and the length of each joint steel pipe 5, between 1.5m~2.0m, uses sleeve pipe 6 to be fixed by socket between the steel pipe 5 that each joint is adjacent;It should be noted that this joint steel pipe sidewall being positioned at bottom arrange permeable hole and in the inner wall liner set flexible porous tube to use as chimney filter 7, silt particle in filtering underground, and its lower port is provided with end plate 9 to close.
Water plug is made up of immersible pump 8, drinking-water pipe 1 and captation, immersible pump 8 is arranged at below well casing 10 liquid level, captation is generally disposed at the position beyond building base plate 2, can be catch pit or intermediate water pipeline, one end of drinking-water pipe 1 connects immersible pump 8, the other end accesses captation, to be entered in captation by subsoil water.
As shown in figures 1 to 6, the present embodiment is applied to the Precipitation Structure construction method in grittiness water-bearing layer under building and specifically includes following steps:
(1) as it is shown in figure 1, offer hole 4 on the base plate 2 of building, and on the base plate 2 of hole 4 periphery, some anchor poles 3 are buried underground;
(2) as shown in Figure 2,3, in the case of Indoor environment spatial altitude is limited, the method using segmented press-in steel pipe 5, i.e., head is saved chimney filter 7 and is pressed in soil layer through hole 4 by the counter-force utilizing anchor pole 3 to be provided, and in time being pressed into certain depth and chimney filter 7 upper end is still located on base plate 2, the upper port at chimney filter 7 is arranged sleeve pipe 6 and is welded to connect with next joint steel pipe 5 by this sleeve pipe 6, after completing welding, continue to use static pressure mode chimney filter 7 and steel pipe 5 to be pressed downward in soil layer;
(3) as shown in Figure 4,5, repeat method in step (2), thereafter each joint steel pipe 5 is pressed in soil layer after complete welding with previous joint steel pipe 5 again, after the chimney filter 7 being positioned at first joint is pressed into designated depth, in Groundwater infiltration well casing 10, putting into immersible pump 8 in well casing 10 in subsoil water to draw water, the subsoil water extracted out is entered in captation by the drinking-water pipe 1 being connected with immersible pump 8 and collects;
(4) as shown in Figure 6, water-pumping/draining is stopped after owner's body structure repair to be built, by immersible pump 8 and drinking-water pipe 1 lift-off well casing 10, finally cut off well casing 10 part more than at the bottom of base plate 2 plate, hole 4 on base plate 2 is repaired, including reconnecting the reinforcing bar of base plate 2 and casting concrete 11 so that hole 4 is carried out sealing of hole.

Claims (4)

1. one kind is applied to the Precipitation Structure in grittiness water-bearing layer under building, it is characterized in that described Precipitation Structure includes running through described building base plate and to the well casing in the soil body of lower section and is arranged at the water plug in described well casing, described well casing is formed by some joint steel pipe combination.
The most according to claim 1 a kind of it is applied to the Precipitation Structure in grittiness water-bearing layer under building, it is characterised in that be welded to connect through sleeve pipe between adjacent described steel pipe.
The most according to claim 1 a kind of it is applied to the Precipitation Structure in grittiness water-bearing layer under building, it is characterised in that described water plug is by being positioned at the immersible pump of described well casing, the captation being positioned at outside described well casing and connecting both drinking-water pipe and form.
The most according to claim 1 a kind of it is applied to the Precipitation Structure in grittiness water-bearing layer under building, it is characterised in that the described steel pipe of described well casing bottom is chimney filter.
CN201620219561.5U 2016-03-22 2016-03-22 Be applied to precipitation structure in grittiness water -bearing stratum under building Active CN205502044U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620219561.5U CN205502044U (en) 2016-03-22 2016-03-22 Be applied to precipitation structure in grittiness water -bearing stratum under building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620219561.5U CN205502044U (en) 2016-03-22 2016-03-22 Be applied to precipitation structure in grittiness water -bearing stratum under building

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106193078A (en) * 2016-09-22 2016-12-07 中建八局第四建设有限公司 A kind of stagewise sealing downcomer
CN110219301A (en) * 2019-07-09 2019-09-10 广东厚普建设工程有限公司 A kind of PHC pipe pile static-pressure construction method
CN111501804A (en) * 2020-04-10 2020-08-07 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 Precipitation structure for preventing earthwork construction from being submerged and construction method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106193078A (en) * 2016-09-22 2016-12-07 中建八局第四建设有限公司 A kind of stagewise sealing downcomer
CN110219301A (en) * 2019-07-09 2019-09-10 广东厚普建设工程有限公司 A kind of PHC pipe pile static-pressure construction method
CN111501804A (en) * 2020-04-10 2020-08-07 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 Precipitation structure for preventing earthwork construction from being submerged and construction method

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