CN103334445B - Spring eye water plugging structure under geological condition of medium weathered rock and construction method thereof - Google Patents
Spring eye water plugging structure under geological condition of medium weathered rock and construction method thereof Download PDFInfo
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- CN103334445B CN103334445B CN201310220407.0A CN201310220407A CN103334445B CN 103334445 B CN103334445 B CN 103334445B CN 201310220407 A CN201310220407 A CN 201310220407A CN 103334445 B CN103334445 B CN 103334445B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 239000011435 rock Substances 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000001556 precipitation Methods 0.000 claims abstract description 105
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims description 46
- 239000010959 steel Substances 0.000 claims description 46
- 238000007789 sealing Methods 0.000 claims description 43
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000010426 asphalt Substances 0.000 description 4
- 238000004078 waterproofing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 241000196435 Prunus domestica subsp. insititia Species 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
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Abstract
The utility model provides a spring eye water block structure under well stroke rock geological conditions and construction method thereof, its structure includes the precipitation pipe, and the intraductal fixed bolster that utilizes of precipitation pipe is propped up in the middle of can moving about, the top takes the reinforcing bar lifting rod of screw thread, and the top of reinforcing bar lifting rod is equipped with the lifting disk, and the lifting disk is located the tube-top of precipitation pipe, the bottom of reinforcing bar lifting rod even has the bottom plate that the rubber gasket was placed on the surface, bottom plate and rubber gasket are located the socle below of precipitation pipe, and construction method at first assembles the precipitation pipe, then puts into the spring eye with the precipitation pipe to fill gap between them, promote the bottom plate repeatedly and make spring eye water take out, fill the concrete shutoff in the precipitation pipe again after precipitation finishes. The invention solves the technical problems that the direct blocking of spring hole water wastes time and labor and causes the waste of underground water resources.
Description
Technical field
The present invention relates to a kind of plugging structure, particularly a kind of plugging structure to underground spring eye water and construction method.
Background technology
In the foundation pit construction of middle weathered rock formation, a large amount of spillings of spring water have influence on construction quality and progress to a great extent, very big inconvenience is brought to workman's construction, the method for blocking of spring water adopts concrete perfusion isogel material in hole to close in the past, wastes time and energy and spring water can not get sufficient utilization.How not affect spring water close measure, having and can utilize groundwater resources effectively and reasonably under ensureing the prerequisite of sole plate construction quality, becoming one of urgent problem of foundation pit construction under middle weathering formation geology condition.
Summary of the invention
To the object of this invention is to provide in one spring water seal bridging structure and construction method thereof under decomposed rock geological conditions, solving direct shutoff spring water wastes time and energy, and the technical problem causing groundwater resources to waste.
For achieving the above object, the present invention adopts following technical scheme:
Spring water seal bridging structure under decomposed rock geological conditions in one, be distributed in the hole, spring within the scope of the ground under decomposed rock geological conditions, in hole, described spring, being vertically provided with a caliber is between two parties less than hole, spring, absolute altitude higher than hole, spring absolute altitude, the precipitation conduit being shorter in length than hole, spring, fills up gravel in the scope under the pipe of described precipitation conduit in side, hole, hole, spring;
Top and bottom that at least two fixed supports lay respectively at conduit is provided with between two parties in the pipe of described precipitation conduit, being installed with one between two fixed supports can the reinforcing bar lifting arm of up and down, top tape screw thread, the length of described reinforcing bar lifting arm is longer than the pipe range of precipitation conduit, the top of reinforcing bar lifting arm is provided with lifting appliance, described lifting appliance comprises the hoisting nut of fixing at center and the wheel disc being connected to hoisting nut surrounding, and screw thread and the hoisting nut at described reinforcing bar lifting arm top adapt;
The bottom of described reinforcing bar lifting arm is connected with the base plate that surface is placed with rubber sheet gasket, and described base plate and rubber sheet gasket are positioned at the beneath side of pipe of precipitation conduit, and the area of base plate and rubber sheet gasket is all greater than the area in precipitation catheter tube cross section;
Gap between outside the tube wall of described precipitation conduit and inside the hole wall in hole, spring is divided into two parts by steel plate for sealing water between two deferents, between two deferents, steel plate for sealing water to be respectively between side pipe steel plate for sealing water between steel plate for sealing water and lower side pipe, gap between two deferents between steel plate for sealing water is filled with water expandable waterstop, and the gap between upper side pipe between steel plate for sealing water to top, hole, hole, spring is filled with the pea gravel concreten being mixed with micro-expanding agent.
The support nut at the center that described fixed support can comprise and radial be connected to support nut surrounding, with the multiple isometric fixing reinforcing bar welded inside the tube wall of precipitation conduit.
The bar footpath of described support nut and reinforcing bar lifting arm adapts, and reinforcing bar lifting arm can pass the support nut of precipitation conduit top and bottom successively.
The hoisting nut at described lifting appliance center is by being welded as a whole inside multiple lifting reinforcing bar that is isometric, that be radially connected to hoisting nut surrounding and wheel disc, and the diameter of described wheel disc is greater than the caliber of precipitation conduit.
Steel plate for sealing water ring can be welded with outside the tube wall being positioned at the precipitation conduit of sole plate scope.
A construction method for spring water seal bridging structure under middle decomposed rock geological conditions, construction sequence is as follows:
Step one: within the scope of the ground under middle decomposed rock geological conditions, excavation hole, spring in the foundation pit earth of the below of foundation pad;
Step 2: gravel is filled up at the bottom of hole in hole, spring;
Step 3: assemble precipitation conduit at the construction field (site), get a caliber and be less than hole, spring steel pipe as precipitation conduit, steel plate for sealing water between steel plate for sealing water and lower side pipe between the upper side pipe of welding outside the tube wall of precipitation conduit, water expandable waterstop is filled between steel plate for sealing water between two deferents, top inside precipitation duct wall and bottom weld two fixed supports respectively, get a reinforcing bar as reinforcing bar lifting arm, its top arranges screw thread, lifting arm is each passed through the support nut at the fixed support center of precipitation conduit top and bottom, the top welding lifting appliance of lifting arm, bottom connecting surface is placed with the base plate of rubber sheet gasket,
Step 4: insert the precipitation conduit that assembling is complete from the aperture in hole, spring, between upper side pipe, steel plate for sealing water fills to the hole interparietal suture gap in hole, spring the pea gravel concreten being mixed with micro-expanding agent;
Step 5: rotate lifting appliance, the hoisting nut at Shi Qi center is rotated along the screw thread at reinforcing bar lifting arm top, reinforcing bar lifting arm is driven to rise, promote the base plate that surface is placed with rubber sheet gasket, rubber sheet gasket is close at the bottom of the pipe of precipitation conduit, then rotates backward lifting appliance, open rubber sheet gasket and base plate, repeatedly open, close rubber sheet gasket and base plate, make spring water rise along precipitation conduit under atmospheric pressure and extract precipitation conduit out;
Step 6: the rubber sheet gasket of bottom and base plate are promoted to and close with at the bottom of the pipe of precipitation conduit, injects the pea gravel concreten being mixed with micro-expanding agent in the pipe of precipitation conduit, closes precipitation conduit.
In described step 3: weld steel plate for sealing water ring outside the tube wall being positioned at the precipitation conduit of sole plate scope.
Compared with prior art the present invention has following characteristics and beneficial effect:
The way of the direct shutoff spring water that the present invention is relatively traditional, placed plugging structure in hole, spring, and plugging structure can carry out direct shutoff as required or extract spring water out behind hole, spring shutoff, and underground water is fully utilized.
Precipitation conduit and reinforcing bar lifting arm with the use of utilizing atmospheric pressure to enter in precipitation steel pipe by spring hydraulic pressure in the present invention, namely spring water extracted out hole, spring, the base plate of precipitation conduit and rubber sheet gasket lift only need be closed after using by spring water conservancy, then it is easy to use to complete shutoff to fill concrete in precipitation conduit.
Material used in the present invention can obtain all at the construction field (site), is convenient to carry out Assembling, convenient and swift, economical and practical.
The present invention can be widely used in draining and the shutoff work of spring water under middle decomposed rock geological conditions.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is the schematic diagram of the direct shutoff step one of the embodiment of the present invention one.
Fig. 2 is the schematic diagram of the direct shutoff step 2 of the embodiment of the present invention one.
Fig. 3 is the schematic appearance of plugging structure in Fig. 1.
Fig. 4 is the structural representation of precipitation conduit in plugging structure in Fig. 3.
Fig. 5 is the top schematic appearance of plugging structure in Fig. 3.
Fig. 6 is the top partial cutaway schematic of plugging structure in Fig. 5.
Fig. 7 is the bottom schematic appearance of plugging structure in Fig. 3.
Fig. 8 is the schematic diagram of shutoff step one after the embodiment of the present invention two is drawn water.
Fig. 9 is the schematic diagram of shutoff step 2 after the embodiment of the present invention two is drawn water.
Figure 10 is the schematic appearance of plugging structure in Fig. 8.
Figure 11 is the structural representation of precipitation conduit in plugging structure in Figure 10.
Figure 12 is the top schematic appearance of plugging structure in Figure 10.
Figure 13 is the top partial cutaway schematic of plugging structure in Figure 12.
Figure 14 is the bottom schematic appearance of plugging structure in Figure 10.
Figure 15 is support bracket fastened plan structure schematic diagram in the present invention.
Figure 16 is the plan structure schematic diagram of wheel disc in lifting appliance in the present invention.
Figure 17 is the structural representation of steel plate for sealing water between upper side pipe in the present invention.
Figure 18 is the structural representation of steel plate for sealing water between lower side pipe in the present invention.
Reference numeral: hole, 1-spring, 2-steel plate for sealing water ring, 3-sole plate, 4-foundation pad, 5-gravel, 6-precipitation conduit, steel plate for sealing water between 7-upper side pipe, steel plate for sealing water between side pipe under 8-, 9-fixed support, 9.1-support nut, 9.2-fixes reinforcing bar, 10-is mixed with the pea gravel concreten of micro-expanding agent, 11-reinforcing bar lifting arm, 11.1-screw thread, 12-water expandable waterstop, 13-base plate, 14-rubber sheet gasket, 15-lifting appliance, 15.1-hoisting nut, 15.2-lifting reinforcing bar, 15.3-wheel disc.
Detailed description of the invention
Embodiment one is see shown in Fig. 1-7, spring water seal bridging structure under decomposed rock geological conditions in one, be distributed in the hole, spring 1 within the scope of the ground under decomposed rock geological conditions, in hole, described spring, being vertically provided with a caliber is between two parties less than hole, spring, absolute altitude higher than hole, spring absolute altitude, the precipitation conduit 6 being shorter in length than hole, spring, gravel 5 is filled up, to ensure that in subsequent construction process, spring water is drawn out of from precipitation conduit 6 in scope under the pipe of described precipitation conduit 6 in side, hole, hole, spring 1.
Top and bottom that at least two fixed supports 9 lay respectively at conduit is provided with between two parties in the pipe of described precipitation conduit 6, being installed with one between two fixed supports 9 can be up and down, the reinforcing bar lifting arm 11 of top tape screw thread 11.1, the length of described reinforcing bar lifting arm 11 is longer than the pipe range of precipitation conduit 6, the top of reinforcing bar lifting arm 11 is provided with lifting appliance 15, described lifting appliance 15 comprises the hoisting nut 15.1 of fixing at center and the wheel disc 15.3 being connected to hoisting nut 15.1 surrounding, screw thread 11.1 and the hoisting nut 15.1 at described reinforcing bar lifting arm 11 top adapt, to ensure being rotatably assorted of lifting appliance and reinforcing bar lifting arm 11 in subsequent construction process.
The bottom of described reinforcing bar lifting arm 11 is connected with the base plate 13 that surface is placed with rubber sheet gasket 14, described base plate 13 and rubber sheet gasket 14 are positioned at the beneath side of pipe of precipitation conduit 6, base plate 13 is all greater than the area of precipitation conduit 6 tube section with the area of rubber sheet gasket 14, ensures that spring water can not flow out precipitation conduit.
Shown in Figure 17-18, gap between outside the tube wall of described precipitation conduit 6 and inside the hole wall in hole, spring 1 is divided into two parts by steel plate for sealing water between two deferents, between two deferents, steel plate for sealing water to be respectively between side pipe steel plate for sealing water 8 between steel plate for sealing water 7 and lower side pipe, gap between two deferents between steel plate for sealing water is filled with water expandable waterstop 12, gap between upper side pipe between top, hole, hole 1, steel plate for sealing water 7 to spring is filled with the pea gravel concreten 10 being mixed with micro-expanding agent, between described lower side pipe, steel plate for sealing water 8 can be designed to oblique, facilitates the fixing of water expandable waterstop 12.
Shown in Figure 15, the support nut 9.1 at the center that described fixed support comprises and radial be connected to support nut 9.1 surrounding, with the multiple isometric fixing reinforcing bar 9.2 welded inside the tube wall of precipitation conduit 6.
Described support nut 9.1 adapts with the bar footpath of reinforcing bar lifting arm 11, and reinforcing bar lifting arm 11 passes the support nut 9.1 of precipitation conduit 6 top and bottom successively.
Shown in Figure 16, the hoisting nut 15.1 at described lifting appliance 15 center is welded as a whole by inside multiple lifting reinforcing bar 15.2 that is isometric, that be radially connected to hoisting nut 15.1 surrounding and wheel disc 15.3, and the diameter of described wheel disc is greater than the caliber of precipitation conduit 6.
The construction method of spring water seal bridging structure under this middle decomposed rock geological conditions of embodiment one, construction sequence is as follows:
Step one: within the scope of the ground under middle decomposed rock geological conditions, excavation hole, spring 1 in the below foundation pit earth 16 of foundation pad 4.
Step 2: gravel 5 is filled up at the bottom of hole in hole, spring 1, shutoff and foundation pad 4 and sole plate 3 are constructed and are not synchronously interfere with each other.
Step 3: assemble precipitation conduit 6 at the construction field (site), get a caliber and be less than hole, spring 1 steel pipe as precipitation conduit 6, steel plate for sealing water 8 between steel plate for sealing water 7 and lower side pipe between the upper side pipe of welding outside the tube wall of precipitation conduit 6, water expandable waterstop 12 is filled between steel plate for sealing water between two deferents, top inside precipitation conduit 6 tube wall and bottom weld two fixed supports 9 respectively, get a reinforcing bar as reinforcing bar lifting arm 11, its top arranges screw thread 11.1, lifting arm is each passed through the support nut 9.1 at fixed support 9 center of precipitation conduit 6 top and bottom, the top welding lifting appliance 15 of reinforcing bar lifting arm 11, bottom connecting surface is placed with the base plate 13 of rubber sheet gasket 14.
Step 4: insert the precipitation conduit 6 that assembling is complete from the aperture in hole, spring 1, between upper side pipe, the hole interparietal suture gap in hole, steel plate for sealing water 7 to spring 1 fills the pea gravel concreten 10 being mixed with micro-expanding agent.
Step 5: rotate lifting appliance 15, the hoisting nut 15.1 at Shi Qi center is rotated along the screw thread 11.1 at reinforcing bar lifting arm 11 top, reinforcing bar lifting arm 11 is driven to rise, promote the base plate 13 that surface is placed with rubber sheet gasket 14, rubber sheet gasket 14 is close at the bottom of the pipe of precipitation conduit 6, then rotates backward lifting appliance 15, open rubber sheet gasket 14 and base plate 13, repeatedly open, close rubber sheet gasket 14 and base plate 13, make spring water rise along precipitation conduit 6 under atmospheric pressure and extract precipitation conduit 6 out.
Step 6: the rubber sheet gasket 14 of bottom and base plate 13 are promoted to and close with at the bottom of the pipe of precipitation conduit 6, injects the pea gravel concreten 10 being mixed with micro-expanding agent in the pipe of precipitation conduit 6, closes precipitation conduit 6.
Spring water seal bridging structure under decomposed rock geological conditions in being formed according to embodiment one, the implementation step of directly carrying out the shutoff of hole, spring is as follows:
Step one, hole, spring 1 pore-forming, and within the scope of certain depth at the bottom of hole, insert gravel 5, can tamp with coarse rock or cobble, precipitation conduit 6 is inserted on top, inject the pea gravel concreten 10 being mixed with micro-expanding agent between outside to hole, the spring inwall of precipitation conduit 6, concreting height is a little more than absolute altitude at the bottom of excavation of foundation pit.More than the top concrete occluding member of precipitation conduit 6, be followed successively by one deck cement based penetration crystallization type water proofing paint, one deck self-adhered polymer modified bitumen waterproofing membrane, one deck solvent-borne type modified bitumen coating from the bottom to top, to ensure that spring water is only overflowed by 6 mouthfuls, precipitation conduit inside thus.
Step 2, is promoted to closed by base plate 13, then in precipitation conduit 6, inject the pea gravel concreten 10 being mixed with micro-expanding agent, closes the delivery port of precipitation conduit 6 completely, makes within precipitation conduit 6 buried foundation bed course 4.
Embodiment two is see shown in Fig. 8-14, with embodiment one unlike, the length of precipitation conduit 6, be welded with steel plate for sealing water ring 2 outside the tube wall being positioned at the precipitation conduit 6 of sole plate 3 scope and be beneficial to sole plate waterproof, the top of precipitation conduit 6 exceeds sole plate 3.Under this middle decomposed rock geological conditions of embodiment two construction method of spring water seal bridging structure and embodiment one unlike, in described step 3: weld steel plate for sealing water ring 2 outside the tube wall being positioned at the precipitation conduit 6 of sole plate 3 scope.
Spring water seal bridging structure under decomposed rock geological conditions in being formed according to embodiment two, spring water carries out the shutoff of hole, spring again implementation step after extracting out is as follows:
Step one, hole, spring 1 pore-forming, and within the scope of certain depth at the bottom of hole, insert gravel 5, can tamp with coarse rock or cobble, precipitation conduit 6 is inserted on top, and the top of precipitation conduit 6 exceeds basic top mark height certain altitude, and in sole plate 3 scope full weld steel plate for sealing water ring 2.Inject the pea gravel concreten 10 being mixed with micro-expanding agent between outside to the spring inwall of precipitation conduit 6, concreting height is a little more than absolute altitude at the bottom of excavation of foundation pit.More than the top concrete occluding member of precipitation conduit 6, be followed successively by one deck cement based penetration crystallization type water proofing paint, one deck self-adhered polymer modified bitumen waterproofing membrane, one deck solvent-borne type modified bitumen coating from the bottom to top, to ensure that spring water is only overflowed by 6 mouthfuls, precipitation conduit inside thus.
Step 2, treats that spring water is extracted out and after utilizing, is promoted to closed by base plate 13, then in precipitation conduit 6, injects the pea gravel concreten 10 being mixed with micro-expanding agent, close the delivery port of precipitation conduit 6 completely.
Claims (7)
1. spring water seal bridging structure under decomposed rock geological conditions in a kind, be distributed within the scope of the ground under decomposed rock geological conditions, in foundation pad (4) hole, spring (1) below, it is characterized in that: in hole, described spring, being vertically provided with a caliber is between two parties less than hole, spring, absolute altitude higher than hole, spring absolute altitude, the precipitation conduit (6) being shorter in length than hole, spring, in the scope under the pipe of described precipitation conduit (6) in side, hole, spring (1) hole, fill up gravel (5);
Top and the bottom that at least two fixed supports (9) lay respectively at conduit is provided with between two parties in the pipe of described precipitation conduit (6), being installed with one between two fixed supports (9) can be up and down, the reinforcing bar lifting arm (11) of top tape screw thread (11.1), the length of described reinforcing bar lifting arm (11) is longer than the pipe range of precipitation conduit (6), the top of reinforcing bar lifting arm (11) is provided with lifting appliance (15), described lifting appliance (15) comprises the fixing hoisting nut (15.1) in center and is connected to the wheel disc (15.3) of hoisting nut (15.1) surrounding, screw thread (11.1) and the hoisting nut (15.1) at described reinforcing bar lifting arm (11) top adapt,
The bottom of described reinforcing bar lifting arm (11) is connected with the base plate (13) that surface is placed with rubber sheet gasket (14), described base plate (13) and rubber sheet gasket (14) are positioned at the beneath side of pipe of precipitation conduit (6), and base plate (13) is all greater than the area of precipitation conduit (6) tube section with the area of rubber sheet gasket (14);
Gap between outside the tube wall of described precipitation conduit (6) and inside the hole wall of hole, spring (1) is divided into two parts by steel plate for sealing water between two deferents, between two deferents, steel plate for sealing water is respectively steel plate for sealing water (8) between steel plate for sealing water between side pipe (7) and lower side pipe, gap between two deferents between steel plate for sealing water is filled with water expandable waterstop (12), and the gap between upper side pipe between steel plate for sealing water (7) to top, hole, spring (1) hole is filled with the pea gravel concreten (10) being mixed with micro-expanding agent.
2. spring water seal bridging structure under middle decomposed rock geological conditions according to claim 1, is characterized in that: the support nut (9.1) at the center that described fixed support comprises and radial be connected to support nut (9.1) surrounding, with the multiple isometric fixing reinforcing bar (9.2) welded inside the tube wall of precipitation conduit (6).
3. spring water seal bridging structure under middle decomposed rock geological conditions according to claim 2, it is characterized in that: described support nut (9.1) adapts with the bar footpath of reinforcing bar lifting arm (11), reinforcing bar lifting arm (11) passes the support nut (9.1) of precipitation conduit (6) top and bottom successively.
4. spring water seal bridging structure under middle decomposed rock geological conditions according to claim 1, it is characterized in that: the hoisting nut (15.1) at described lifting appliance (15) center is welded as a whole with wheel disc (15.3) inner side by multiple lifting reinforcing bar (15.2) that is isometric, that be radially connected to hoisting nut (15.1) surrounding, and the diameter of described wheel disc is greater than the caliber of precipitation conduit (6).
5. spring water seal bridging structure under middle decomposed rock geological conditions according to claim 1, is characterized in that: be welded with steel plate for sealing water ring (2) outside the tube wall being positioned at the precipitation conduit (6) of sole plate (3) scope.
6. the construction method of spring water seal bridging structure under decomposed rock geological conditions according to claim 1-5 any one, is characterized in that: construction sequence is as follows:
Step one: within the scope of the ground under middle decomposed rock geological conditions, excavation hole, spring (1) in the foundation pit earth (16) of the below of foundation pad (4);
Step 2: fill up gravel (5) at the bottom of hole, spring (1) hole;
Step 3: assemble precipitation conduit (6) at the construction field (site), get a caliber and be less than hole, spring (1) steel pipe as precipitation conduit (6), steel plate for sealing water (8) between steel plate for sealing water (7) and lower side pipe between the upper side pipe of welding outside the tube wall of precipitation conduit (6), water expandable waterstop (12) is filled between steel plate for sealing water between two deferents, top inside precipitation conduit (6) tube wall and bottom weld two fixed supports (9) respectively, get a reinforcing bar as reinforcing bar lifting arm (11), its top arranges screw thread (11.1), lifting arm is each passed through the support nut (9.1) at fixed support (9) center of precipitation conduit (6) top and bottom, top welding lifting appliance (15) of reinforcing bar lifting arm (11), bottom connecting surface is placed with the base plate (13) of rubber sheet gasket (14),
Step 4: insert the precipitation conduit (6) that assembling is complete from the aperture of hole, spring (1), between upper side pipe, steel plate for sealing water (7) fills to the hole interparietal suture gap of hole, spring (1) pea gravel concreten (10) being mixed with micro-expanding agent;
Step 5: rotate lifting appliance (15), the hoisting nut (15.1) at Shi Qi center is rotated along the screw thread (11.1) at reinforcing bar lifting arm (11) top, reinforcing bar lifting arm (11) is driven to rise, promote the base plate (13) that surface is placed with rubber sheet gasket (14), rubber sheet gasket (14) is made to be close at the bottom of the pipe of precipitation conduit (6), rotate backward lifting appliance (15) again, open rubber sheet gasket (14) and base plate (13), repeatedly open, close rubber sheet gasket (14) and base plate (13), spring water is made to rise along precipitation conduit (6) under atmospheric pressure and extract precipitation conduit (6) out,
Step 6: the rubber sheet gasket (14) of bottom and base plate (13) are promoted to closed at the bottom of the pipe of precipitation conduit (6), inject the pea gravel concreten (10) being mixed with micro-expanding agent in the pipe of precipitation conduit (6), close precipitation conduit (6).
7. the construction method of spring water seal bridging structure under a kind of middle decomposed rock geological conditions according to claim 6, is characterized in that: in described step 3: weld steel plate for sealing water ring (2) outside the tube wall being positioned at the precipitation conduit (6) of sole plate (3) scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220407.0A CN103334445B (en) | 2013-06-05 | 2013-06-05 | Spring eye water plugging structure under geological condition of medium weathered rock and construction method thereof |
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| CN201310220407.0A CN103334445B (en) | 2013-06-05 | 2013-06-05 | Spring eye water plugging structure under geological condition of medium weathered rock and construction method thereof |
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| CN103334445B true CN103334445B (en) | 2015-04-08 |
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| CN107268646B (en) * | 2017-08-04 | 2023-03-21 | 北京建工土木工程有限公司 | High-water-pressure-drop well sealing device and construction method thereof |
| CN111560968B (en) * | 2020-04-19 | 2021-08-24 | 浙江杭瑞岩土工程有限公司 | Water-rich quicksand stratum foundation pit dewatering well device |
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| JP2004346646A (en) * | 2003-05-23 | 2004-12-09 | Maeda Corp | Construction method for preventing piping |
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| CN103334445A (en) | 2013-10-02 |
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