CN102304924B - Non-resource-exploitation dewatering construction method and dewatering well - Google Patents
Non-resource-exploitation dewatering construction method and dewatering well Download PDFInfo
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- CN102304924B CN102304924B CN 201110176741 CN201110176741A CN102304924B CN 102304924 B CN102304924 B CN 102304924B CN 201110176741 CN201110176741 CN 201110176741 CN 201110176741 A CN201110176741 A CN 201110176741A CN 102304924 B CN102304924 B CN 102304924B
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Abstract
The invention discloses a non-resource-exploitation dewatering construction method and a dewatering well. According to the invention, the earth surface is divided into a surface shallow water layer, an impermeable stratum and a surface deep water layer through arranging a dewatering well with a certain depth, wherein water of the surface shallow water layer is directly drained into the surface deep water later by a pump. According to the specific construction method, the pump is arranged at the upper part of the dewatering well, the water inlet of the pump is arranged at the upper part of the dewatering well, the water outlet of the pump is arranged at the lower part of the dewatering well, a great number of water inlet holes are arranged on the well wall at the upper part of the dewatering well, a great number of water outlet holes are arranged on the well wall at the lower part of the dewatering well, the middle well wall of the dewatering well is closed; and the diameter of the lower part of the dewater well is less than that of the upper part of the dewatering well; and an exhaust pipe is also arranged at the upper part of the dewatering well. The non-resource-exploitation dewatering construction method has the following advantages: 1, dewatering problem is solved only by the arrangement of one dewater well, thus the structure is reasonable, the construction is convenient and the cost is low; 2, valuable water resource is saved; and 3, construction is flexible, and different numbers of dewatering wells can be arranged according to different earth surface conditions.
Description
Technical field
The present invention relates to the realm of building construction, is a kind of dewatering construction method and the dewatering well of realizing the method specifically.
Background technology
Along with the development of Building technology, the height of building is more and more higher, and to guarantee to build stable, the basis instrument such as corresponding ground are also dug darker and darker; On the other hand, along with the continuous compression of urban space, people pay attention to the underground space more, such as subterranean railway, and underground building etc.And unavoidably run into drainage problem during underground construction.Starting stage, the general employing directly discharged the outer way of construction area with underground water, and this way has not only been wasted a large amount of groundwater resources, the more important thing is, the method is also taken away a large amount of powder fine sands, causes easily ground subsidence behind the underground water of having found time.Be head it off, Chinese patent application number discloses a kind of underground railway drainage and construction method for 96109155.X, " after the water in work zone underground shallow part aquifer extracted out; recharge again in the underground deep aquifer or recharge again in the underground shallow part aquifer after construction is finished ", its method is: " outside subway tunnel; a plurality of apertures are set greater than 0.4 meter in the interval vertically apart from 10-30 rice, subway tunnel center line both sides; water pipe (7) diameter is greater than 0.2 meter; deeply reach the dewatering well (1) of underground shallow part aquifer (12); (2) a plurality of apertures are set greater than 0.4 meter in dewatering well (1) spaced around; water pipe (7) diameter is greater than 0.2 meter, the dark recharge well (4) that reaches underground deep aquifer (15), (3) by water pipeline (5) connection between dewatering well and recharge well, (4) suction pump (9) is set in dewatering well (1), in recharge well (4), arrange back and raise pump (14), (5) at dewatering well (1) and recharge well (4) a plurality of self-seepage sand drains (2) are set on every side, (6) are in dewatering well (1) and recharge well (4) well head setting operation hole (6).", the disclosed technology contents of this application for a patent for invention need to arrange a plurality of different dewatering wells, and these dewatering wells need to be coupled together by pump, pipeline, has so just caused the problems such as cost is high, construction is complicated.
Summary of the invention
For solving the problems of the technologies described above, the present invention discloses a kind of dewatering construction method simple in structure and that only be made of single dewatering well, and concrete scheme is as follows:
A kind of Non-resource exploitation type precipitation job practices, by the dewatering well of certain depth is set, the earth's surface is divided into ground surface shallow water layer, impervious layer and earth's surface profundal zone, described dewatering well is divided into upper, middle, and lower part below the earth's surface, described upper part is corresponding with the ground surface shallow water layer, described middle part is corresponding with impervious layer, and described lower part is corresponding with the earth's surface profundal zone; The water of described ground surface shallow water layer directly enters described earth's surface profundal zone by pump, concrete grammar is: divide on the top of dewatering well pump is set, the water inlet of pump is arranged on the upper part of dewatering well, the delivery port of pump is in the lower part of dewatering well, the borehole wall in the upper part of dewatering well arranges a large amount of inlet openings, the borehole wall in the lower part of dewatering well arranges a large amount of weep holes, and the middle part borehole wall of dewatering well is the sealing shape; The lower section diameter of dewatering well is less than the upper section diameter of dewatering well; Upper part at dewatering well also arranges stack;
Described dewatering well is divided into upper, middle, and lower part below the earth's surface, described upper part is corresponding with the ground surface shallow water layer, and described middle part is corresponding with impervious layer, and described lower part is corresponding with the earth's surface profundal zone; Divide on the top of described dewatering well pump is set, the water inlet of pump is arranged on the upper part of dewatering well, the delivery port of pump is in the lower part of dewatering well, the borehole wall in the upper part of dewatering well arranges a large amount of inlet openings, the borehole wall in the lower part of dewatering well arranges a large amount of weep holes, and the middle part borehole wall of dewatering well is the sealing shape; The lower section diameter of dewatering well is less than the upper section diameter of dewatering well; Upper part at dewatering well also arranges stack;
For preventing silt to the obstruction of the borehole wall into and out of the water hole, the lower part borehole wall inboard of described dewatering well arranges filter screen, between described filter screen and the borehole wall filtrate is set; Inboard at the upper part borehole wall of dewatering well arranges filter screen;
For playing safe warning function and necessary automatically controlled facility being installed, the top of described dewatering well arranges the well chamber.
Advantage of the present invention is: 1. only solved the precipitation problem with a dewatering well, and rational in infrastructure, easy construction, cost is low; 2. saved valuable water resource; 3. construction can the dewatering well of varying number be set according to different earth's surface situations, and each dewatering well also can arrange the different dewatering well degree of depth, the upper, middle and lower technical indicators such as size separately flexibly.
Description of drawings
Fig. 1 is schematic diagram of the present invention.
The specific embodiment
Specify the present invention below in conjunction with accompanying drawing, as shown in Figure 1, dewatering well of the present invention is being divided into part 101, middle part 102, lower part 103 below the earth's surface, described upper part 101 is corresponding with the ground surface shallow water layer, described middle part 102 is corresponding with impervious layer, and described lower part 103 is corresponding with the earth's surface profundal zone; The upper part 101 interior pumps 2 that arrange at described dewatering well, the water inlet of pump is arranged on the upper part 101 of dewatering well, the delivery port of pump is arranged on the lower part 103 of dewatering well by pipeline 3, the borehole wall in the upper part 101 of dewatering well arranges a large amount of inlet openings, the borehole wall in the lower part of dewatering well arranges a large amount of weep holes, and the middle part borehole wall of dewatering well is the sealing shape; The lower section diameter of dewatering well is less than the upper section diameter of dewatering well; Upper part at dewatering well also arranges stack 4;
For preventing silt to the obstruction of the borehole wall into and out of the water hole, lower part 103 borehole wall inboards of described dewatering well arrange filter screen 7, between described filter screen 7 and the borehole wall filtrate 5 are set; Inboard at upper part 101 boreholes wall of dewatering well arranges filter screen 7;
For playing safe warning function and necessary automatically controlled facility being installed, the top of described dewatering well arranges well chamber 6, shown in pump 2 be connected by electric wire 8 and well chamber 6 interior controlling organizations.
Principle of the present invention is: if the water on ground is to the darker earth's surface discharging of lower floor, impervious layer is set in the middle of needing, for this reason, the borehole wall of the mid portion of dewatering well does not arrange the hole, so that the soil of this part is dry, utilize the natural viscosity of soil, the ground surface shallow water layer on upper strata and the earth's surface profundal zone of lower floor can be separated, the water of ground surface shallow water layer enters the water inlet of the pump 2 in the dewatering well by the inlet opening of upper part 101 boreholes wall of dewatering well, under the effect of pump 2, water is transported to the lower part 103 of dewatering well, owing on the borehole wall of part 103 many weep holes are arranged under the dewatering well, water enters the earth's surface profundal zone by these weep holes under the pressure of pump; And do not have the hole on the borehole wall of the middle part 102 of dewatering well, so water can not enter impervious layer, like this, just by dewatering well the water on earth's surface is discharged downwards, and mid portion 102 is not because the borehole wall has the hole, not there are flowing out, make this one deck on earth's surface form impervious layer.
Be delivered to the upper part 101 of dewatering well for the pressure that prevents the water of part 103 under the dewatering well, the diameter of the upper part 101 of described dewatering well is greater than the diameter of lower part 103, like this, the water of a small amount of backflow is arranged in the volume situation that change is large suddenly, natural pressure discharges; For the bubble in the anti-sealing flows out lower impact partly to water, be provided with stack, gas can upwards flow out from this pipeline.
Claims (4)
1. Non-resource exploitation type precipitation job practices, it is characterized in that: by the dewatering well of certain depth is set, the earth's surface is divided into ground surface shallow water layer, impervious layer and earth's surface profundal zone, described dewatering well is divided into upper, middle, and lower part below the earth's surface, described upper part is corresponding with the ground surface shallow water layer, described middle part is corresponding with impervious layer, and described lower part is corresponding with the earth's surface profundal zone; The water of described ground surface shallow water layer directly enters described earth's surface profundal zone by pump, concrete grammar is: divide on the top of dewatering well pump is set, the water inlet of pump is arranged on the upper part of dewatering well, the delivery port of pump is in the lower part of dewatering well, the borehole wall in the upper part of dewatering well arranges a large amount of inlet openings, the borehole wall in the lower part of dewatering well arranges a large amount of weep holes, and the middle part borehole wall of dewatering well is the sealing shape; The lower section diameter of dewatering well is less than the upper diameter of dewatering well; Upper part at dewatering well also arranges stack.
2. dewatering well of realizing the described method of claim 1, it is characterized in that: described dewatering well is divided into upper, middle, and lower part below the earth's surface, described upper part is corresponding with the ground surface shallow water layer, and described middle part is corresponding with impervious layer, and described lower part is corresponding with the earth's surface profundal zone; Divide on the top of described dewatering well pump is set, the water inlet of pump is arranged on the upper part of dewatering well, the delivery port of pump is in the lower part of dewatering well, the borehole wall in the upper part of dewatering well arranges a large amount of inlet openings, the borehole wall in the lower part of dewatering well arranges a large amount of weep holes, and the middle part borehole wall of dewatering well is the sealing shape; The diameter of the lower part of dewatering well is less than the diameter of the upper part of dewatering well; Upper part at dewatering well also arranges stack.
3. dewatering well according to claim 2, it is characterized in that: the lower part borehole wall inboard of described dewatering well arranges filter screen, between described filter screen and the borehole wall filtrate is set; Inboard at the upper part borehole wall of dewatering well arranges filter screen.
4. dewatering well according to claim 2, it is characterized in that: the top of described dewatering well arranges the well chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110176741 CN102304924B (en) | 2011-06-28 | 2011-06-28 | Non-resource-exploitation dewatering construction method and dewatering well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110176741 CN102304924B (en) | 2011-06-28 | 2011-06-28 | Non-resource-exploitation dewatering construction method and dewatering well |
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| Publication Number | Publication Date |
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| CN102304924A CN102304924A (en) | 2012-01-04 |
| CN102304924B true CN102304924B (en) | 2013-03-13 |
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| CN 201110176741 Expired - Fee Related CN102304924B (en) | 2011-06-28 | 2011-06-28 | Non-resource-exploitation dewatering construction method and dewatering well |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105178289B (en) * | 2015-10-10 | 2017-10-31 | 江西建工第二建筑有限责任公司 | Precast dewatering pile tube and its application method in building foundation pit |
| CN114439047A (en) * | 2022-01-27 | 2022-05-06 | 中国地质科学院矿产综合利用研究所 | Method for controlling, guiding and preventing seepage of pollution of tailing pond |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63293224A (en) * | 1987-05-23 | 1988-11-30 | Shimizu Constr Co Ltd | Groundwater draining work |
| JP3690458B2 (en) * | 1998-02-06 | 2005-08-31 | 清水建設株式会社 | Ground improvement method |
| JP2005002659A (en) * | 2003-06-11 | 2005-01-06 | East Japan Railway Co | Groundwater circulation system in excavation of ground, and construction method for measure against groundwater in excavation of ground |
| CN100516380C (en) * | 2007-06-07 | 2009-07-22 | 上海交通大学 | Method for lowering water by combining phreatic water in footing groove with artesian aquifer - well stratifications |
| CN201367577Y (en) * | 2008-12-30 | 2009-12-23 | 上海长凯岩土工程有限公司 | Groundwater recharge well |
| CN202139600U (en) * | 2011-06-28 | 2012-02-08 | 沈阳中建东设岩土工程有限公司 | Non-resource exploitation type precipitation well |
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