CN111676978A - Foundation pit supporting structure with tunnel on side wall of foundation pit and method - Google Patents
Foundation pit supporting structure with tunnel on side wall of foundation pit and method Download PDFInfo
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- CN111676978A CN111676978A CN202010408783.2A CN202010408783A CN111676978A CN 111676978 A CN111676978 A CN 111676978A CN 202010408783 A CN202010408783 A CN 202010408783A CN 111676978 A CN111676978 A CN 111676978A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims abstract description 22
- 230000003044 adaptive effect Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 86
- 230000001681 protective effect Effects 0.000 claims description 33
- 238000003860 storage Methods 0.000 claims description 18
- 238000009412 basement excavation Methods 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 claims description 5
- 238000001764 infiltration Methods 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 description 8
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 208000014674 injury Diseases 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/08—Advancing mechanisms
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
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- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a foundation pit supporting structure with a tunnel on the side wall of a foundation pit and a method thereof, wherein the foundation pit supporting structure comprises a foundation pit protection device and a drainage system, the foundation pit protection device comprises a first supporting column and a first supporting beam, one end of a transverse adjusting rod, which is far away from a bearing seat, is in threaded connection with a cross rotating ejector rod, and the right end of the cross rotating ejector rod is in threaded connection with a transverse adjusting rod; the invention also provides a construction method of the foundation pit supporting structure with the tunnel on the side wall of the foundation pit, which comprises the following steps: and S1, burying a drainage blind pipe in the side wall of the foundation pit in the process of excavating the foundation pit, and connecting a protection ceiling of the foundation pit protection device with the protection ceiling insert block in an adaptive manner. Through setting up protection ceiling and metal protection board, can provide fairly reliable protection to the workman of being under construction in the foundation ditch tunnel, rotate the ejector pin through setting up horizontal adjusting rod and cross, can adjust the distance of left and right sides metal protection board, ensure the guard action of metal protection board to the tunnel both sides wall.
Description
Technical Field
The invention relates to the technical field of construction protection, in particular to a foundation pit supporting structure with a tunnel on the side wall of a foundation pit and a method.
Background
The foundation pit support is a measure for protecting the safety of the construction of an underground main structure and the surrounding environment of the foundation pit, and adopts temporary retaining, reinforcing, protecting and underground water controlling measures for the foundation pit and the surrounding environment, and common foundation pit support forms mainly comprise row pile support, underground continuous wall support, cement retaining wall, soil nailing wall (spray anchor support) and the like.
When the foundation ditch protection is established in engineering construction, need do strict water repellent to the foundation ditch that has the tunnel, the mode that uses at present has drainage inefficiency, and runs into rainfall weather, causes the emergence of incident because of aggravating foundation ditch drainage burden easily, and when carrying out the tunnel protection, can not carry out repetitious use to protector, causes the waste in the construction production process.
Therefore, a need exists for a structure and method for supporting a foundation pit with a tunnel in the sidewall of the foundation pit.
Disclosure of Invention
The invention aims to provide a foundation pit supporting structure with a tunnel on the side wall of a foundation pit and a method, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a foundation pit supporting structure with a tunnel on the side wall of a foundation pit and a method thereof comprise a foundation pit protection device and a drainage system, wherein the foundation pit protection device comprises a first supporting column and a first supporting cross beam, the side wall of the first supporting column is provided with a bearing seat, the other end of the bearing seat is rotatably connected with a transverse adjusting rod, the surface of one end, away from the bearing seat, of the transverse adjusting rod is provided with an external thread, one end, away from the bearing seat, of the transverse adjusting rod is in threaded connection with a cross rotating ejector rod, the surfaces of the upper end and the lower end of the cross rotating ejector rod are respectively wrapped with a layer of anti-skidding rubber sleeve, the right end of the cross rotating ejector rod is provided with a small hole, the inner wall of the small hole is provided with an internal thread, the right end of the cross, the outer ring surfaces of the first bearing and the second bearing are fixedly connected with a protective ceiling, the left end of the protective ceiling is provided with a streamlined lower edge, the right end of the protective ceiling is provided with a concave groove, the concave groove penetrates through the front and the back of the concave groove, the inner wall of the concave groove is connected with a protective ceiling insert in a sliding mode, and the bottom end of the protective ceiling insert is rotatably connected with a second supporting beam.
Preferably, the quantity of first support post is two, two first support post sets up respectively in first supporting beam's both ends, two the metal guard plate has been laid to the opposite face of first support post, the bottom of metal guard plate is provided with the spacing sign of inserting that is used for supporting tight device, the surface of metal guard plate is provided with the circular port, the inner wall of circular port is provided with the drainage blind pipe that is used for extracting the tunnel inner wall infiltration.
Preferably, the number of bearing frame is four, four the bearing frame all rotates and is connected with the transverse adjusting pole, controls two the transverse adjusting pole is a set of, and a set of transverse adjusting pole threaded connection has the cross to rotate the ejector pin, and a set of transverse adjusting pole's external screw thread opposite direction, the internal thread at cross rotation ejector pin both ends respectively with control two transverse adjusting pole's external screw thread looks adaptations, the cross rotates the ejector pin accessible and rotates and take off.
Preferably, the front end and the rear end of the second supporting beam are fixedly connected with a third bearing and a fourth bearing respectively, the outer annular surfaces of the third bearing and the fourth bearing are fixedly connected with a protective ceiling insert block, the bottom end of the second supporting beam is rotatably connected with a second supporting column, the number of the second supporting columns is two, universal wheels used for moving devices are arranged at the bottom ends of the first supporting column and the second supporting column respectively, the number of the universal wheels is four, the top ends of the universal wheels are provided with brake footbrakes matched with the universal wheels, a threaded jackscrew used for adjusting the brake protective ceiling insert block is embedded in the lower surface of the protective ceiling, a lamp holder is fixedly connected to the lower surface of the protective ceiling, and a bulb is connected to the inner thread of the lamp holder.
Preferably, the drainage system comprises a foundation pit side wall drainage system and a foundation pit tunnel drainage system, the foundation pit side wall drainage system comprises drainage blind pipes and fixed drainage plates, the drainage blind pipes are uniformly arranged inside the foundation pit side wall, the number of the drainage blind pipes is a plurality of, the water outlet ends of the drainage blind pipes are arranged outside the foundation pit side wall, the surface of the foundation pit side wall is transversely and vertically provided with a sewer pipe, the water outlet ends of the drainage blind pipes are fixedly connected with the sewer pipe, the bottom end of the sewer pipe is provided with a water storage tank, the tank wall of the water storage tank is embedded with a water suction pipe, the right end of the water suction pipe is fixedly connected with a water pump, the output end of the water pump is fixedly connected with a water outlet pipe, the water outlet end of the water outlet pipe is arranged outside the foundation pit side wall, and the fixed drainage plates are.
Preferably, foundation ditch tunnel drainage system includes drainage blind pipe, fixed drain bar and horizontal drain pipe, the top and the lateral wall in foundation ditch tunnel all set up the drainage blind pipe the same with foundation ditch lateral wall drainage system, the quantity of drainage blind pipe is a plurality of, a plurality of the drainage blind pipe evenly sets up in the inner wall in foundation ditch tunnel, a plurality of the equal fixedly connected with horizontal drain pipe in bottom of drainage blind pipe, the delivery end of horizontal drain pipe all sets up in the inside of catch basin.
Preferably, the top of foundation ditch lateral wall is provided with the block terminal, water pump and bulb electric connection.
The invention also provides a construction method of the foundation pit supporting structure with the tunnel on the side wall of the foundation pit, which comprises the following steps:
s1, in the process of excavation of the foundation pit, burying a drainage blind pipe in the side wall of the foundation pit, connecting a protection ceiling of the foundation pit protection device with a protection ceiling insert block in an adaptive manner, reducing the volume of the foundation pit protection device through a cross rotating ejector rod, and pushing a universal wheel to move the device to the inside of the tunnel;
s2, when the universal wheel moves to a position needing protection, the cross rotating ejector rod is rotated to enlarge the volume of the structure, two metal protection plates are adjusted to abut against two side walls of the tunnel, the structure is fixed by screwing the threaded jackscrew, a brake on the universal wheel is locked, and a limiting inserting label is put down;
s3, arranging a transverse drain pipe to connect the water outlets of the drainage blind pipes in the tunnel, wherein the water outlets of the transverse drain pipe are arranged in the water storage tank;
and S4, controlling a power supply of the water pump through the distribution box, and discharging water in the water storage tank out of the foundation pit.
Advantageous effects
The invention provides a foundation pit supporting structure with a tunnel on the side wall of a foundation pit and a method, which have the following beneficial effects:
1. this foundation ditch lateral wall has foundation ditch protective structure in tunnel, through set up the drainage blind pipe in lateral wall and the tunnel at the foundation ditch, draw forth the ponding effect of passing through the drainage blind pipe in the soil layer, and filter earth in the in-process of absorbing water, good hydrophobic effect has been played, through setting up fixed drain bar, the muddy water on foundation ditch lateral wall and tunnel surface is filtered by fixed drain bar, and keep off silt particle in the outside of fixed drain bar, when having strengthened the foundation ditch protection, the loss of soil and water has been prevented, through setting up catch basin and water pump, infiltration in the foundation ditch collects in the catch basin, outside the foundation ditch is taken out to the water pump, the more inconvenience and other incident that cause the construction of moisture in the foundation ditch has been prevented.
2. This foundation ditch lateral wall has foundation ditch protective structure in tunnel, through setting up protection ceiling and metal guard plate, can provide fairly reliable protection to the workman of construction in the foundation ditch tunnel, prevent the tunnel and appear the injury that accidents such as collapsing led to the fact the people, rotate the ejector pin through setting up transverse adjusting pole and cross, can adjust the distance of left and right sides metal guard plate, ensure the guard action of metal guard plate to the wall of tunnel both sides, through setting up protection ceiling and protection ceiling inserted block, can adjust the size of top protection area when adjusting two metal sheet relative distance, ensure that the workman is in tunnel construction, can not receive the injury that comes from the top.
3. This foundation ditch lateral wall has foundation ditch protective structure in tunnel, bottom through at the support column sets up the universal wheel, can be very convenient remove protector, the convenience is laid in long and narrow tunnel carries out the multistage, through setting up the screw thread jackscrew, can fix protection ceiling and protection ceiling inserted block, improve the overall stability of device, through setting up spacing inserting and stopping the service brake, can strengthen the stability of device after the device rigidity, ensure that can not take place the skew because of position such as collapse accident in the foundation ditch tunnel, the constructor of being convenient for escapes from the interior when taking place the accident from the foundation ditch tunnel, avoid receiving the injury of accident.
Drawings
FIG. 1 is a schematic view of a front cross-sectional structure of a foundation pit protection device according to the present invention;
FIG. 2 is a schematic diagram of a right cross-sectional structure of the foundation pit protection device of the present invention;
FIG. 3 is a schematic view of the installation structure of the drainage system of the present invention;
FIG. 4 is an enlarged schematic view of the thread plug of the present invention;
FIG. 5 is an enlarged schematic view of the cross rotary push rod of the present invention.
In the figure: the water pump comprises a first supporting column 1, a first supporting beam 2, a bearing seat 3, a transverse adjusting rod 4, a cross rotating ejector rod 5, a first bearing 6, a distribution box 7, a protective ceiling 8, a protective ceiling inserting block 9, a second supporting beam 10, a metal protective plate 11, a limiting inserting label 12, a drainage blind pipe 13, a transverse drainage pipe 14, a second supporting column 15, a universal wheel 16, a thread jackscrew 17, a bulb 18, a fixed drainage plate 19, a sewer pipe 20, a water storage tank 21, a water pump 22 and a water outlet pipe 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a foundation pit supporting structure with a tunnel on the side wall of a foundation pit and a method thereof comprise a foundation pit protection device and a drainage system, wherein the foundation pit protection device comprises a first support column 1 and a first support beam 2.
The quantity of first support column 1 is two, two first support column 1 set up respectively in the both ends of first supporting beam 2, metal guard plate 11 has been laid to the opposite face of two first support column 1, through setting up protection ceiling 8 and metal guard plate 11, can provide fairly reliable protection to the workman of construction in the foundation ditch tunnel, prevent that accidents such as collapsing from appearing in the tunnel to the injury that the people caused, the bottom of metal guard plate 11 is provided with the spacing sign 12 of inserting that is used for abutting device, the surface of metal guard plate 11 is provided with the circular port, the inner wall of circular port is provided with the drainage blind pipe 13 that is used for extracting the infiltration of tunnel inner wall.
The lateral wall of the first support column 1 is provided with a bearing seat 3, the other end of the bearing seat 3 is rotatably connected with a transverse adjusting rod 4, the surface of one end of the transverse adjusting rod 4 far away from the bearing seat 3 is provided with external threads, one end of the transverse adjusting rod 4 far away from the bearing seat 3 is in threaded connection with a cross rotating ejector rod 5, the surfaces of the upper end and the lower end of the cross rotating ejector rod 5 are respectively wrapped with a layer of anti-skidding rubber sleeve, the right end of the cross rotating ejector rod 5 is provided with a small hole, the inner wall of the small hole is provided with internal threads, the right end of the cross rotating ejector rod 5 is in threaded connection with the transverse adjusting rod 4, the distance between the metal protection plates 11 on the left side and the right side can be adjusted by arranging the transverse adjusting rod 4 and the cross rotating ejector rod 5, the, a group of horizontal adjusting rod 4 threaded connection has cross and rotates ejector pin 5, and a group of horizontal adjusting rod 4's external screw thread opposite direction, and the internal thread at 5 both ends of cross rotation ejector pin respectively with control two horizontal adjusting rod 4's external screw thread looks adaptation, the cross rotates 5 accessible rotations of ejector pin and takes off.
First bearing 6 and second bearing of both ends fixedly connected with around first supporting beam 2, the equal fixedly connected with protection ceiling 8 of outer anchor ring of first bearing 6 and second bearing, the left end of protection ceiling 8 is provided with streamlined lower edge, concave groove has been seted up to the right-hand member of protection ceiling 8, run through around the concave groove, sliding connection has protection ceiling inserted block 9 in the concave groove, through setting up protection ceiling 8 and protection ceiling inserted block 9, can adjust top protection area's size when adjusting two 11 relative distances of metal protection board, ensure that the workman can not receive the injury from the top when tunnel construction.
The bottom end of the protective ceiling insert block 9 is rotatably connected with a second supporting beam 10, the front end and the rear end of the second supporting beam 10 are fixedly connected with a third bearing and a fourth bearing, the outer annular surfaces of the third bearing and the fourth bearing are fixedly connected with the protective ceiling insert block 9, the bottom end of the second supporting beam 10 is rotatably connected with a second supporting column 15, the number of the second supporting columns 15 is two, universal wheels 16 for a moving device are respectively arranged at the bottom ends of the first supporting column 1 and the second supporting column 15, the number of the universal wheels 16 is four, the top ends of the four universal wheels 16 are respectively provided with a brake foot brake matched with the universal wheels, the universal wheels 16 are arranged at the bottom ends of the supporting columns, so that the protective device can be conveniently moved, a plurality of sections can be conveniently laid in a long and narrow tunnel, and the stability of the device can be enhanced after the position of the device is fixed by arranging the limiting insert tags 12 and the brake, the device can not be deviated due to the position of collapse accidents and the like in the foundation pit tunnel, so that construction workers can conveniently escape from the foundation pit tunnel when accidents happen, and the accidents are prevented from being hurt.
The lower surface of protection ceiling 8 inlays and is equipped with the screw thread jackscrew 17 that is used for adjusting braking protection ceiling inserted block 9, through setting up screw thread jackscrew 17, can fix protection ceiling 8 and protection ceiling inserted block 9, improves the overall stability of device, and the lower fixed surface of protection ceiling is connected with the lamp stand, and the internal thread of lamp stand is connected with bulb 18.
The drainage system comprises a foundation pit side wall drainage system and a foundation pit tunnel drainage system, the foundation pit side wall drainage system comprises drainage blind pipes 13 and fixed drainage plates 19, the drainage blind pipes 13 are uniformly arranged inside the foundation pit side wall, the number of the drainage blind pipes 13 is a plurality of, the water outlet ends of the drainage blind pipes 13 are arranged outside the foundation pit side wall, the surface of the foundation pit side wall is transversely and vertically provided with sewer pipes 20, the water outlet ends of the drainage blind pipes 13 are fixedly connected with the sewer pipes 20, the bottom end of the sewer pipes 20 is provided with a water storage tank 21, the tank wall of the water storage tank 21 is embedded with a water absorption pipe, the right end of the water absorption pipe is fixedly connected with a water pump 22, the output end of the water pump 22 is fixedly connected with a water outlet pipe 23, the water outlet end of the water outlet pipe 23 is arranged.
The foundation pit tunnel drainage system comprises drainage blind pipes 13, fixed drainage plates 19 and transverse drainage pipes 14, wherein the top and the side wall of the foundation pit tunnel are respectively provided with the drainage blind pipes 13, the number of the drainage blind pipes 13 is a plurality, the drainage blind pipes 13 are uniformly arranged on the inner wall of the foundation pit tunnel, the bottom ends of the drainage blind pipes 13 are respectively fixedly connected with the transverse drainage pipes 14, the water outlet ends of the transverse drainage pipes 14 are respectively arranged inside a water storage tank 21, accumulated water in a soil layer is led out through the water absorption effect of the drainage blind pipes 13 by arranging the drainage blind pipes 13 in the side wall of the foundation pit and the tunnel, soil is filtered in the water absorption process to play a good role of drainage, through arranging the fixed drainage plates 19, muddy water on the side wall of the foundation pit and the surface of the tunnel is filtered by the fixed drainage plates 19, silt particles are blocked outside the fixed drainage plates 19, and the protection of the foundation pit is enhanced, the loss of soil and water has been prevented, and through setting up catch basin 21 and water pump 22, infiltration in the foundation ditch collects in catch basin 21, outside the foundation ditch was taken out to water pump 22, prevented that the more inconvenience that causes the construction of moisture in the foundation ditch and other incident.
The top of foundation ditch lateral wall is provided with block terminal 7, water pump 22 and bulb 18 electric connection.
The invention also provides a construction method of the foundation pit supporting structure with the tunnel on the side wall of the foundation pit, which comprises the following steps:
s1, in the process of excavation of the foundation pit, burying a drainage blind pipe 13 in the side wall of the foundation pit, connecting a protective ceiling 8 and a protective ceiling insert block 9 of the foundation pit protective device in a matching manner, reducing the volume of the foundation pit protective device through a cross rotating ejector rod 5, and pushing a universal wheel 16 to move the device to the inside of the tunnel;
s2, when the universal wheel moves to a position needing protection, the cross rotating ejector rod 5 is rotated to enlarge the volume of the structure, two metal protection plates 11 are adjusted to abut against two side walls of a tunnel, the structure is fixed by screwing the threaded jackscrew 17 tightly, a brake on the universal wheel 16 is locked, and the limiting insert label 12 is put down;
s3, arranging a transverse drain pipe 14 to connect the water outlets of the drainage blind pipes 13 in the tunnel, wherein the water outlet of the transverse drain pipe 14 is arranged in the water storage tank 21;
and S4, controlling the power supply of the water pump 22 through the distribution box 7, and discharging the water in the water storage tank 21 out of the foundation pit.
The working principle is as follows: when the foundation pit protection structure with the tunnel on the side wall of the foundation pit is used, firstly, in the process of excavation of the foundation pit, a drainage blind pipe 13 is buried in the side wall of the foundation pit, soil layer seepage water in the side wall of the foundation pit is absorbed by the drainage blind pipe 13 and flows into a water storage tank 21 from the interior of the drainage blind pipe 13 through a sewer pipe 20, the construction influence of collapse of the side wall of the foundation pit on the bottom of the foundation pit is prevented, a protection ceiling 8 and a protection ceiling insert block 9 of the foundation pit protection device are connected in an adaptive mode, the size of the foundation pit protection device is reduced through a cross rotating ejector rod 5, a universal wheel 16 is pushed to move the device to the interior of the tunnel, when the device is moved to a position needing protection, the cross rotating ejector rod 5 is rotated to increase the size of the structure, two metal protection plates 11 are adjusted to abut against the two side walls of the tunnel, a screw thread jack, the protective devices are used for repeatedly laying the tunnel to ensure the safety in the tunnel, the side wall of the tunnel of the foundation pit is constructed by arranging small holes on the surface of the metal protective plate 11, the drainage blind pipes 13 are arranged on the side wall and the top, then the transverse drainage pipe 14 is arranged to connect the water outlets of the drainage blind pipes 13 in the tunnel, the water outlets of the transverse drainage pipe 14 are arranged in the water storage tank 21, the soil seepage water on the inner wall of the tunnel is discharged into the water storage tank 21 under the action of the drainage blind pipes 13 and the transverse drainage pipe 14 continuously until the inner wall of the tunnel of the foundation pit is gradually dried, the power supply of the water pump 22 is controlled by the distribution box 7 while the pipeline is erected, the water in the water storage tank 21 is discharged out of the foundation pit, the influence of the seepage water on the construction of the foundation pit is reduced, after the construction, the protective devices and the drainage blind pipes 13 can be easily removed for the tunnel protection, construction and production costs are saved, and meanwhile, the safety of foundation pit tunnel construction workers is perfectly guaranteed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a lateral wall of foundation ditch has excavation supporting construction in tunnel, includes foundation ditch protector and drainage system, its characterized in that: the foundation pit protection device comprises a first support column (1) and a first support beam (2), a bearing seat (3) is arranged on the side wall of the first support column (1), a transverse adjusting rod (4) is rotatably connected to the other end of the bearing seat (3), external threads are arranged on the surface of one end, away from the bearing seat (3), of the transverse adjusting rod (4), a cross rotating ejector rod (5) is connected to one end, away from the bearing seat (3), of the transverse adjusting rod (4) in a threaded manner, the outer surfaces of the upper end and the lower end of the cross rotating ejector rod (5) are respectively wrapped with a layer of anti-slip rubber sleeve, a small hole is formed in the right end of the cross rotating ejector rod (5), internal threads are arranged on the inner wall of the small hole, a first bearing (6) and a second bearing are arranged on the right end of the cross rotating ejector rod (5), and a protection ceiling, the left end of the protective ceiling (8) is provided with a streamline lower edge, the right end of the protective ceiling (8) is provided with a concave groove, the concave groove penetrates through the front and the back, the inner wall of the concave groove is connected with a protective ceiling insert block (9) in a sliding way, the bottom end of the protective ceiling insert block (9) is rotatably connected with a second supporting beam (10), the number of the first supporting columns (1) is two, the two first supporting columns (1) are respectively arranged at two ends of the first supporting beam (2), metal protection plates (11) are laid on opposite surfaces of the two first supporting columns (1), the bottom of the metal protection plate (11) is provided with a limiting insert tag (12) for a propping device, the surface of metal guard plate (11) is provided with the circular port, the inner wall of circular port is provided with drainage blind pipe (13) that are used for extracting the tunnel inner wall infiltration.
2. The excavation supporting structure with a tunnel on the side wall of an excavation according to claim 1, wherein: the quantity of bearing frame (3) is four, four bearing frame (3) all rotates and is connected with horizontal adjusting rod (4), controls two horizontal adjusting rod (4) are a set of, and is a set of horizontal adjusting rod (4) threaded connection has cross rotation ejector pin (5), and is a set of the external screw thread opposite direction of horizontal adjusting rod (4), the cross rotates the internal thread at ejector pin (5) both ends respectively with control the external screw thread looks adaptation of two horizontal adjusting rod (4).
3. A support structure for a foundation pit having a tunnel in a side wall thereof according to claim 2, wherein: the front end and the rear end of the second supporting beam (10) are respectively and fixedly connected with a third bearing and a fourth bearing, the outer ring surfaces of the third bearing and the fourth bearing are fixedly connected with a protective ceiling insert block (9), the bottom end of the second supporting beam (10) is rotatably connected with a second supporting column (15), the number of the second supporting columns (15) is two, universal wheels (16) used for moving the device are arranged at the bottom ends of the first supporting column (1) and the second supporting column (15), the number of the universal wheels (16) is four, the top ends of the four universal wheels (16) are all provided with brake footbrakes matched with the universal wheels, the lower surface of the protective ceiling (8) is embedded with a thread jackscrew (17) for adjusting and braking the protective ceiling insert block (9), the lower surface of the protective ceiling is fixedly connected with a lamp holder, and the inner thread of the lamp holder is connected with a bulb (18).
4. A support structure for a foundation pit having a tunnel in a side wall thereof according to claim 3, wherein: the drainage system comprises a foundation pit side wall drainage system and a foundation pit tunnel drainage system, the foundation pit side wall drainage system comprises a plurality of drainage blind pipes (13) and a fixed drainage plate (19), the number of the drainage blind pipes (13) is a plurality, the drainage blind pipes (13) are uniformly arranged inside the foundation pit side wall, the water outlet ends of the drainage blind pipes (13) are all arranged outside the foundation pit side wall, sewer pipes (20) are transversely and vertically arranged on the surface of the foundation pit side wall, the water outlet ends of the drainage blind pipes (13) are all fixedly connected with the sewer pipes (20), a water storage tank (21) is arranged at the bottom end of each sewer pipe (20), a water suction pipe is embedded in the wall of the water storage tank (21), the right end of the water suction pipe is fixedly connected with a water pump (22), and the output end of the water pump (22) is fixedly connected with a water outlet pipe (23), the water outlet end of the water outlet pipe (23) is arranged outside the side wall of the foundation pit, and a fixed drainage plate (19) is laid on the surface of the side wall of the foundation pit.
5. The excavation supporting structure with a tunnel on the side wall of an excavation according to claim 4, wherein: foundation ditch tunnel drainage system includes drainage blind pipe (13), fixed drain bar (19) and horizontal drain pipe (14), the top and the lateral wall in foundation ditch tunnel all set up drainage blind pipe (13) the same with foundation ditch lateral wall drainage system, the quantity of drainage blind pipe (13) is a plurality of, a plurality of drainage blind pipe (13) evenly set up in the inner wall in foundation ditch tunnel, a plurality of the equal fixedly connected with in bottom of drainage blind pipe (13) horizontal drain pipe (14), the play water end of horizontal drain pipe (14) all sets up in the inside of catch basin (21).
6. The excavation supporting structure with a tunnel on the side wall of an excavation according to claim 4, wherein: the top of foundation ditch lateral wall is provided with block terminal (7), water pump (22) and bulb (18) electric connection.
7. A construction method of a foundation pit supporting structure with a tunnel on the side wall of a foundation pit is characterized by comprising the following steps: the method comprises the following steps:
s1, in the process of excavation of the foundation pit, burying a drainage blind pipe (13) in the side wall of the foundation pit, connecting a protection ceiling (8) of the foundation pit protection device with a protection ceiling insert block (9) in an adaptive manner, reducing the volume of the foundation pit protection device through a cross rotating ejector rod (5), and pushing a universal wheel (16) to move the device to the inside of the tunnel;
s2, when the universal wheel moves to a position needing protection, the cross rotating ejector rod (5) is rotated to enlarge the volume of the structure, two metal protection plates (11) are adjusted to abut against two side walls of the tunnel, the structure is fixed by screwing the threaded jackscrew (17), a brake on the universal wheel (16) is locked, and the limiting insert label (12) is put down;
s3, arranging a transverse drain pipe (14) to connect the water outlets of the drainage blind pipes (13) in the tunnel, wherein the water outlet of the transverse drain pipe (14) is arranged in the water storage tank (21);
and S4, controlling the power supply of the water pump (22) through the distribution box (7) and draining the water in the water storage tank (21) out of the foundation pit.
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| CN112323814A (en) * | 2020-11-10 | 2021-02-05 | 台州和源建设有限公司 | Municipal administration foundation ditch concrete face protection system |
| CN112878335A (en) * | 2021-01-28 | 2021-06-01 | 延安大学 | Structure of building foundation pit inner support convenient to rapidly dismantle and using method thereof |
| CN113529747A (en) * | 2021-08-27 | 2021-10-22 | 中建八局第二建设有限公司 | Foundation ditch lateral wall is prevented collapsing and is used protective structure |
| CN114033476A (en) * | 2021-11-23 | 2022-02-11 | 福建工程学院 | Tunnel construction mud-rock flow protector |
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