CN102644291B - Foundation pit precast concrete pipe immersed-tube precipitation structure and precipitation method - Google Patents
Foundation pit precast concrete pipe immersed-tube precipitation structure and precipitation method Download PDFInfo
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- CN102644291B CN102644291B CN201210102995.3A CN201210102995A CN102644291B CN 102644291 B CN102644291 B CN 102644291B CN 201210102995 A CN201210102995 A CN 201210102995A CN 102644291 B CN102644291 B CN 102644291B
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Abstract
The invention discloses a foundation pit precast concrete pipe immersed-tube precipitation structure and a precipitation method. In the precipitation structure and precipitation method, multiple broken stone layers are paved on the bottom layer of the concrete pipe so as to filter the sediment and the like at the bottom of the broken stone layers, and the sediment in the concrete pipe is diluted by flushing water into the concrete pipe through a water flushing pipe and then pumped out by a water pumping pipe and a submersible pump. The precipitation structure is simple, the precipitation construction method has a simple flow, and the construction cost of the foundation pit precipitation construction can be effectively reduced; and the precipitation structure and precipitation method disclosed by the invention are applied to the field of building construction.
Description
Technical field
The present invention relates to the realm of building construction, particularly relate to a kind of building operations structure and carry out the method for dewatering construction by this structure.
Background technology
In the excavation of construction work, for fear of producing the seepage failure phenomenons such as quicksand, prevent that the soil body from caving in, meet foundation pit construction, must carry out precipitation processing to old foundation ditch.
The success or not of foundation pit dewatering, the construction speed that has directly affected engineering also concerns the safety of foundation pit structure.Now conventional foundation pit dewatering construction method is tube well dewatering construction, the most methods of holing into well that adopt of this type of construction method, its construction period is relatively long, and needs more rig, the operation of making is comparatively complicated, thereby the cost of foundation pit dewatering construction cannot be reduced.
Summary of the invention
For addressing the above problem, a kind of method that the invention provides more simple foundation pit dewatering structure and carry out foundation pit dewatering construction by this structure.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of foundation ditch precast concrete pipe immersed tube Precipitation Structure, be included in some joint concrete pipe of overlapping placement in foundation ditch, the bottom of concrete pipe is equipped with some layers of macadam, the top of the inherent macadam of concrete pipe is provided with submersible pump and is connected and stretches out the drinking-water pipe of foundation ditch with submersible pump, is also provided with the jet water spout that extends macadam top in concrete pipe.
Be further used as the improvement of technical solution of the present invention, macadam comprises the first macadam, the second macadam and the 3rd macadam that are layed in concrete pipe bottom, and the second macadam is between the first macadam and the 3rd macadam.
Be further used as the improvement of technical solution of the present invention, the stone size in the second macadam is less than the size of stone in the first macadam and the 3rd macadam.
Be further used as the improvement of technical solution of the present invention, the thickness of the first macadam and the 3rd macadam is 10～30cm, in the first macadam and the 3rd macadam, the length of stone is 5～7cm, and the thickness of the second macadam is 5～20cm, and in the second macadam, the length of stone is 1～2cm.
Utilize above-mentioned foundation ditch precast concrete pipe immersed tube Precipitation Structure to carry out a method for dewatering construction, comprise the following steps:
1) in foundation ditch, place a joint concrete pipe;
2) wash by water in concrete pipe by described jet water spout, and take the mud mixture in concrete pipe away by submersible pump and drinking-water pipe;
3) after described concrete pipe sinks under Gravitative Loads, on concrete pipe, place again a concrete pipe;
4), after concrete pipe no longer sinks, in concrete pipe, lay macadam;
5) extract the water of concrete pipe bottom out by submersible pump.
Beneficial effect of the present invention: this Precipitation Structure and precipitation method are equipped with some layers of macadam at the bottom of concrete pipe, filter with the silt to macadam bottom etc., and by jet water spout to the silt in bath dilution concrete pipe in concrete pipe, and extract silt out by drinking-water pipe and submersible pump, this Precipitation Structure is simple, and dewatering construction method flow process is simple, can effectively reduce the construction cost of foundation pit dewatering construction.
Brief description of the drawings
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention overall structure schematic diagram.
Detailed description of the invention
With reference to Fig. 1, the present invention is a kind of foundation ditch precast concrete pipe immersed tube Precipitation Structure, be included in some joint concrete pipe 1 of overlapping placement in foundation ditch, the bottom of concrete pipe 1 is equipped with some layers of macadam 2, the top of the inherent macadam 2 of concrete pipe 1 is provided with submersible pump 3 and is connected and stretches out the drinking-water pipe 4 of foundation ditch with submersible pump 3, is also provided with the jet water spout 5 that extends macadam 2 tops in concrete pipe 1.
Utilize above-mentioned foundation ditch precast concrete pipe immersed tube Precipitation Structure to carry out a method for dewatering construction, comprise the following steps:
1) in foundation ditch, place a joint concrete pipe 1;
2) by described jet water spout 5 to the interior bath of concrete pipe 1, and take the mud mixture in concrete pipe 1 away by submersible pump 3 and drinking-water pipe 4;
3) after described concrete pipe 1 sinks under Gravitative Loads, on concrete pipe 1, place again a concrete pipe 1;
4) after concrete pipe 1 no longer sinks, at the interior laying macadam 2 of concrete pipe 1;
5) extract the water of concrete pipe 1 bottom out by submersible pump 3.
This Precipitation Structure and precipitation method are equipped with some layers of macadam 2 at the bottom of concrete pipe 1, filter with the silt to macadam 2 bottoms etc., and dilute the silt in concrete pipe 1 by jet water spout 5 to the interior bath of concrete pipe 1, and extract silt out by drinking-water pipe 4 and submersible pump 3, this Precipitation Structure is simple, and dewatering construction method flow process is simple, can effectively reduce the construction cost of foundation pit dewatering construction.
As the preferred embodiment of the present invention, macadam 2 comprises that the first macadam 21, the second macadam 22 and the 3rd macadam 23, the second macadams 22 that are layed in concrete pipe 1 bottom are between the first macadam 21 and the 3rd macadam 23.
As the preferred embodiment of the present invention, the stone size in the second macadam 22 is less than the size of the first macadam 21 and the 3rd macadam 23 interior stones.
As the preferred embodiment of the present invention, the thickness of the first macadam 21 and the 3rd macadam 23 is 10～30cm, the length of the first macadam 21 and the 3rd macadam 23 interior stones is 5～7cm, and the thickness of the second macadam 22 is 5～20cm, and the length of the second macadam 22 interior stones is 1～2cm.
What its some joint concrete pipe 1 were single-unit single-unit inserts in foundation ditch, each joint concrete pipe 1 sinks under its Gravitative Loads, in the process of sinking at concrete pipe 1, by the ceaselessly past interior bath of concrete pipe 1 of jet water spout 5, and carry out the extraction of silt by drinking-water pipe 4 and submersible pump 3 simultaneously, sink to after certain depth until concrete pipe 1, can stop to the interior bath of concrete pipe 1, only extract sub-dewatering well shaft bottom in foundation ditch out by drinking-water pipe 4 and submersible pump 3 and swarm the water coming.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (2)
1. a foundation ditch precast concrete pipe immersed tube Precipitation Structure, it is characterized in that: the some joint concrete pipe (1) that are included in overlapping placement in foundation ditch, the bottom of described concrete pipe (1) is equipped with some layers of macadam (2), the top of the inherent macadam of described concrete pipe (1) (2) is provided with submersible pump (3) and is connected with submersible pump (3) stretches out the drinking-water pipe (4) of foundation ditch, in described concrete pipe (1), be also provided with the jet water spout (5) that extends macadam (2) top, described macadam (2) comprises the first macadam (21) that is layed in concrete pipe (1) bottom, the second macadam (22) and the 3rd macadam (23), described the second macadam (22) is positioned between the first macadam (21) and the 3rd macadam (23), stone size in described the second macadam (22) is less than the size of the first macadam (21) and the interior stone of the 3rd macadam (23), the thickness of described the first macadam (21) and the 3rd macadam (23) is 10～30cm, the length of described the first macadam (21) and the interior stone of the 3rd macadam (23) is 5～7cm, the thickness of described the second macadam (22) is 5～20cm, the length of the interior stone of described the second macadam (22) is 1～2cm.
2. utilize foundation ditch precast concrete pipe immersed tube Precipitation Structure described in claim 1 to carry out a method for dewatering construction, it is characterized in that, comprise the following steps:
1), in foundation ditch, place a joint concrete pipe (1);
2), by described jet water spout (5) to bath in concrete pipe (1), and take the interior mud mixture of concrete pipe (1) away by submersible pump (3) and drinking-water pipe (4);
3), after described concrete pipe (1) sinks under Gravitative Loads, on concrete pipe (1), place again a concrete pipe (1);
4), after concrete pipe (1) no longer sinks, in concrete pipe (1) lay macadam (2);
5), extract the water of concrete pipe (1) bottom out by submersible pump (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210102995.3A CN102644291B (en) | 2012-04-10 | 2012-04-10 | Foundation pit precast concrete pipe immersed-tube precipitation structure and precipitation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210102995.3A CN102644291B (en) | 2012-04-10 | 2012-04-10 | Foundation pit precast concrete pipe immersed-tube precipitation structure and precipitation method |
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| CN102644291A CN102644291A (en) | 2012-08-22 |
| CN102644291B true CN102644291B (en) | 2014-08-27 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103866778B (en) * | 2012-12-10 | 2016-08-31 | 贵阳铝镁设计研究院有限公司 | The processing method of a kind of deep foundation pit of soft soil foundation precipitation and structure |
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| JP2004068485A (en) * | 2002-08-08 | 2004-03-04 | Sakamoto Shokai:Kk | Method of forcedly removing surface water in deep well construction method |
| CN201326176Y (en) * | 2008-12-15 | 2009-10-14 | 上海市第二建筑有限公司 | Deep foundation pit dewatering retention well |
| CN101768976A (en) * | 2009-12-29 | 2010-07-07 | 中建城市建设发展有限公司 | Base pit dewatering and water saving device and construction method thereof |
| CN102155020A (en) * | 2011-01-28 | 2011-08-17 | 福建工程学院 | Open caisson construction method of reinforced concrete for soft soil layer |
| CN102383412A (en) * | 2010-08-27 | 2012-03-21 | 中铁二十二局集团第三工程有限公司 | Construction method by adopting dewatering and water recharging to control sedimentation surrounding deep foundation pit |
| CN202610818U (en) * | 2012-04-10 | 2012-12-19 | 广东金辉华集团有限公司 | Water dropping structure for foundation pit by pipe sinking of prefabricated concrete pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61211414A (en) * | 1985-03-18 | 1986-09-19 | Takenaka Komuten Co Ltd | Reduction well construction method |
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| JP2004068485A (en) * | 2002-08-08 | 2004-03-04 | Sakamoto Shokai:Kk | Method of forcedly removing surface water in deep well construction method |
| CN201326176Y (en) * | 2008-12-15 | 2009-10-14 | 上海市第二建筑有限公司 | Deep foundation pit dewatering retention well |
| CN101768976A (en) * | 2009-12-29 | 2010-07-07 | 中建城市建设发展有限公司 | Base pit dewatering and water saving device and construction method thereof |
| CN102383412A (en) * | 2010-08-27 | 2012-03-21 | 中铁二十二局集团第三工程有限公司 | Construction method by adopting dewatering and water recharging to control sedimentation surrounding deep foundation pit |
| CN102155020A (en) * | 2011-01-28 | 2011-08-17 | 福建工程学院 | Open caisson construction method of reinforced concrete for soft soil layer |
| CN202610818U (en) * | 2012-04-10 | 2012-12-19 | 广东金辉华集团有限公司 | Water dropping structure for foundation pit by pipe sinking of prefabricated concrete pipe |
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| 浅析水利工程基坑排水施工技术;陈智勇等;《中国高新技术企业》;20091115(第22期);第159-161页 * |
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