CN115387361A - Tunnel start and stop point foundation pit construction method for water-rich soil layer - Google Patents
Tunnel start and stop point foundation pit construction method for water-rich soil layer Download PDFInfo
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- CN115387361A CN115387361A CN202210946786.0A CN202210946786A CN115387361A CN 115387361 A CN115387361 A CN 115387361A CN 202210946786 A CN202210946786 A CN 202210946786A CN 115387361 A CN115387361 A CN 115387361A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000002689 soil Substances 0.000 title claims abstract description 31
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 16
- 230000002787 reinforcement Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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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
- E02D17/20—Securing of slopes or inclines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
- B01D29/036—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting ring shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6484—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a translatory movement with respect to the filtering element
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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
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
-
- 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
- E02D19/08—Restraining of underground water by employing open ditches arranged below the level of the water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The application discloses tunnel start and stop point foundation pit construction method of water-rich soil layer relates to the foundation pit construction technology field of water-rich soil layer, and the method comprises the following steps: s1, arranging drainage ditches at the outer top of the foundation pit and the inner bottom of the foundation pit; s2, paving a reinforcing mesh on the surface of the side slope; s3, horizontally driving a reinforcing pipe into the side slope and fixedly connecting the reinforcing pipe with a reinforcing mesh, wherein the inner cavity of the reinforcing pipe is hollow, and a filtering component is arranged at one end of the reinforcing pipe inserted into a soil layer of the side slope; and S4, spraying a concrete layer on the slope surface of the side slope. This application has thereby when guaranteeing the normal drainage of reinforcing pipe in the reinforcing pipe use stability, makes the water in the side slope in time discharge via the reinforcing pipe, flows the effect in the escape canal of bottom in the foundation ditch.
Description
Technical Field
The invention relates to the technical field of foundation pit construction of water-rich soil layers, in particular to a tunnel start and stop point foundation pit construction method of a water-rich soil layer.
Background
When a foundation pit at the geological position of a water-rich soil layer is constructed, a water body in a slope body of a side slope generates static water pressure and dynamic water pressure, the bonding force between structural surfaces is weakened, and the stability between rock layers is reduced, so that water in the slope body needs to be drained in time.
In the correlation technique, when the foundation ditch construction of tunnel start and stop point, the bottom sets up the escape canal in top and the foundation ditch outside the foundation ditch usually to insert on the side slope and establish the drain pipe, the escape canal at top outside the foundation ditch is used for preventing that outside water from flowing into in the foundation ditch bottom, and bottom escape canal is used for removing the water in the foundation ditch.
However, in the actual construction process, because the slope surface soil quality of the side slope of the rich water soil layer geology department is relatively soft, and the cohesive force between the soil layers is poor, the drain pipe inserted into the soil layer has lower stability, and when the one end downward sloping that the drain pipe inserted into the soil layer originally is inserted into caused the mouth of pipe slope of drain pipe to incline upwards, can influence the normal drainage of drain pipe, exists and improves the space.
Disclosure of Invention
In order to improve the stability of the drain pipe and guarantee normal drainage of the drain pipe, the application provides a tunnel start and stop point foundation pit construction method of a water-rich soil layer.
The application provides a tunnel starting and stopping point foundation pit construction method of a water-rich soil layer, which adopts the following technical scheme:
a tunnel start and stop point foundation pit construction method for a water-rich soil layer comprises the following steps:
s1, arranging drainage ditches at the outer top of the foundation pit and the inner bottom of the foundation pit;
s2, paving a reinforcing mesh on the surface of the side slope;
s3, horizontally driving a reinforced pipe into the side slope and fixedly connecting the reinforced pipe with a reinforcing mesh, wherein the inner cavity of the reinforced pipe is hollow, and a filtering component is arranged at one end of the reinforced pipe, which is inserted into the soil layer of the side slope;
and S4, spraying a concrete layer on the slope surface of the side slope.
Through adopting above-mentioned technical scheme, through adopting above-mentioned construction method, insert the reinforced pipe in the side slope and be connected with the reinforcing bar net and played the reinforcement effect to the side slope, and further consolidate through concrete layer, the hollow reinforced pipe of inner chamber is used as the drain pipe, thereby when guaranteeing the normal drainage of reinforced pipe in the stability in the reinforced pipe use, thereby make the water in the side slope in time discharge via the reinforced pipe, flow to in the escape canal of bottom in the foundation ditch, filtering component's setting has then played the filter effect to the water that flows in the reinforced pipe, reach the operation requirement of water, the condition of reinforcing pipe jam has also effectively been reduced to impurity such as silt.
Preferably, the filter assembly comprises a filter screen arranged in a roll, the winding axis of the filter screen being perpendicular to the axis of the stiffening tube.
Through adopting above-mentioned technical scheme, the setting up of filter screen has realized guaranteeing the quality of discharged water to the filtration of impurities such as silt in the water.
Preferably, the reinforcing pipe is Fang Xingguan, and a space is reserved between two adjacent layers of the filter screen;
the filter screen is connected to the inner wall of the reinforcing pipe in a sliding manner along the winding direction of the filter screen, a pulling assembly used for pulling the filter screen outwards is arranged on the slope surface of the side slope, and a reset assembly used for resetting the filter screen is arranged in the inner cavity of the reinforcing pipe;
and an upper scraper for scraping the sludge on the outer wall of the filter screen is fixedly arranged on the top wall of the inner cavity of the reinforcing pipe.
By adopting the technical scheme, after the filter screen is used for a period of time, impurities such as sludge and the like are attached to the outer wall of the filter screen, so that normal drainage is influenced; through pulling subassembly pulling filter screen outwards removal, go up the scraper and strike off adnexed impurity on the outer wall of the filter screen of removing, realize the clearance to the filter screen, the live time of extension reinforced pipe, simultaneously, because the filter screen lapping sets up, have some filter screen segments to filter the water all the time, do not influence the normal use of reinforced pipe when clearing up the filter screen.
Preferably, the bottom wall of the inner cavity of the reinforced pipe is provided with a lower scraper, and the total length of the filter screen is more than twice of the length of the filter screen segment between the upper scraper and the lower scraper.
Through adopting above-mentioned technical scheme, the outside pulling certain distance of filter screen, go up the scraper and clear up the outer wall of filter screen and continue to use a period after, the filter screen is retrieved to initial condition under reset assembly's effect, and the filter screen is retrieved the in-process, and the lower scraper is cleared up the outer wall of filter screen, has further prolonged the live time of filter screen, has reduced the change number of times of filter screen.
Preferably, the lower scraper is obliquely arranged, the reinforced pipe is provided with a dirt accumulation groove, and the dirt accumulation groove is positioned at the lower end of the lower scraper.
Through adopting above-mentioned technical scheme, the impurity that is scraped by the scraper falls into on the guide board at last and falls into to long-pending dirty groove, reduces the influence to the enhancement pipe water flow volume.
Preferably, sealing gaskets are arranged between two side walls of the upper scraper and two side walls of the reinforcing pipe, and sealing gaskets are arranged between two side walls of the lower scraper and two side walls of the reinforcing pipe.
Through adopting above-mentioned technical scheme, go up the scraper and played sealed effect with scraper down, avoid rivers to flow from the clearance between filter screen outside and the reinforced pipe, compare in addding the sealing washer between filter screen and reinforced pipe, frictional force when having reduced the filter screen and removing is favorable to the removal of filter screen.
Preferably, the two opposite side walls of the upper scraper and the lower scraper are coated with waterproof coatings.
Through adopting above-mentioned technical scheme, waterproof coating's setting has reduced the appearance of the condition of impurity such as silt on attached to last scraper and lower scraper.
Preferably, the pulling assembly comprises a reel arranged on the side slope, a pull rope wound outside the reel and a driving piece used for driving the reel to rotate, and the other end of the pull rope is fixedly arranged at the head end of the filter screen.
Through adopting above-mentioned technical scheme, when needing outside pulling filter screen, rotate through driving piece drive spool, realize the rolling of stay cord, and then drive the filter screen and outwards remove.
Preferably, the reset assembly comprises an elastic member, one end of the elastic member is fixedly arranged in the inner cavity of the reinforcing pipe, and the other end of the elastic member is fixedly arranged at the tail end of the filter screen.
Through adopting above-mentioned technical scheme, when needing the filter screen to retrieve, through driving piece drive pivot antiport, the stay cord is outwards emitted, and the filter screen is retrieved to initial condition under the effect of elastic component simultaneously.
Preferably, the side wall of the inner cavity of the reinforcing pipe is provided with a sliding groove arranged along the winding direction of the filter screen, the side wall of the filter screen is fixedly provided with a sliding strip along the extending direction of the side wall, and the sliding strip is in sliding fit in the sliding groove.
Through adopting above-mentioned technical scheme, realized the sliding connection of filter screen and reinforced pipe, made the filter screen can remove according to the predetermined direction, realized moving outward and retrieving of filter screen.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by adopting the construction method, the reinforcing pipe with a hollow inner cavity is used as a drain pipe, so that the stability of the reinforcing pipe in the use process is ensured, the water in the side slope is timely drained through the reinforcing pipe and flows into a drainage ditch at the bottom in the foundation pit while the normal drainage of the reinforcing pipe is ensured, and the arrangement of the filtering component has a filtering effect on the water body flowing into the reinforcing pipe, so that the use requirement of the water body is met, and the condition that the reinforcing pipe is blocked by impurities such as sludge and the like is also effectively reduced;
2. the head end through pulling subassembly pulling filter screen outwards removes, and the scraper strikes off adnexed impurity on the outer wall of the filter screen that removes, realizes the clearance to the filter screen, prolongs the live time of reinforcing pipe, simultaneously, because the outer wall butt all the time of filter screen lapping setting and filter screen in the inner wall of reinforcing pipe, does not influence the normal use of reinforcing pipe when clearing up the filter screen.
Drawings
Fig. 1 is a schematic view showing a side slope and the construction of a mesh reinforcement, a concrete layer, a reinforcing pipe and a pulling assembly at the side slope.
FIG. 2 is a schematic cross-sectional view showing the structure of the reinforcement tube, filter assembly and spring.
FIG. 3 is a schematic partial cross-sectional view showing the structure of the reinforcement pipe, the filter assembly, the upper scraper, the lower scraper, the reset assembly and the dirt collection tank.
Fig. 4 is a partial cross-sectional view showing a slip structure between a screen and a reinforcement pipe.
Description of the reference numerals:
11. a reinforcing mesh; 12. a concrete layer; 2. a reinforcement tube; 21. a chute; 22. a dirt accumulation groove; 23. an extension groove; 3. filtering with a screen; 31. a winding axis; 32. a slide bar; 33. a first use segment; 34. a second use segment; 4. a pulling assembly; 41. an outer frame; 42. a reel; 43. pulling a rope; 44. a motor; 5. a scraper is arranged; 6. a lower scraper; 7. a spring.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a tunnel start and stop point foundation pit construction method for a water-rich soil layer, which is used for reinforcing and draining a water-rich side slope on one side of a foundation pit.
The bottom all is equipped with the escape canal in top and the foundation ditch outside the foundation ditch, and the escape canal at top outside the foundation ditch is used for preventing that outside water from flowing in the foundation ditch bottom, and bottom escape canal is used for removing the water in the foundation ditch.
Reinforcing bar net 11 has been laid on the side slope surface, and fixedly connected with reinforced pipe 2 on the reinforcing bar net 11, and 2 levels of reinforced pipe insert in the side slope, and reinforced pipe 2 is equipped with a plurality ofly along the domatic incline direction interval of side slope, and reinforced pipe 2 inserts to be equipped with the filter assembly who is used for filtering impurity such as silt in the inner chamber of the one end in the side slope soil layer.
The outside of the reinforcing mesh 11 is provided with a concrete layer 12.
The reinforcing pipe 2 is set to be a square pipe, and one end of the reinforcing pipe 2 close to the slope surface of the side slope is flush with the slope surface of the side slope.
The filter assembly comprises a filter screen 3 which is arranged in a coiled mode, and a space is reserved between two adjacent layers of the filter screen 3 after the filter screen is coiled. The screen 3 is wound around an axis 31 of the screen 3, which is perpendicular to the axis of the reinforcing tube 2, as shown in fig. 3.
Both sides face of the filter screen 3 are connected with the inner wall of the reinforced pipe 2 in a sliding way. A chute 21 is formed in the inner wall of the reinforcing pipe 2, the chute 21 is arranged along the winding and bending direction of the filter screen 3, and one end, close to the slope surface of the side slope, of the chute 21 continues to extend outwards to the pipe orifice of the reinforcing pipe 2; the side surface of the filter screen 3 is fixedly provided with a slide bar 32 along the winding and bending direction, and the slide bar 32 is connected in the chute 21 in a sliding way. Wherein, the thickness of spout 21 is less than the thickness of filter screen 3 for the both sides wall of filter screen 3 is laminated in the inner wall of reinforced pipe 2 all the time, increases the leakproofness between filter screen 3 lateral wall and the 2 inner walls of reinforced pipe.
Be equipped with the pulling subassembly 4 that is used for outside pulling filter screen 3 on the slope surface of side slope, be equipped with the reset assembly who is used for making the inside rolling of filter screen 3 reset in the reinforced pipe 2. An upper scraper 5 is fixedly arranged on the top wall of the reinforcing pipe 2, the upper scraper 5 is obliquely and downwards arranged, the lower end of the upper scraper 5 is abutted to the outer wall of the filter screen 3, and a sealing gasket is arranged between two side walls of the upper scraper 5 and two side walls of the reinforcing pipe 2. The diapire of reinforced pipe 2 sets firmly scraper 6 down, and lower scraper 6 slope upwards sets up, and the higher end butt of scraper 6 is in the outer wall of filter screen 3 down, is equipped with sealed the pad between the both sides wall of scraper 6 and the both sides wall of reinforced pipe 2 down. The reinforcing pipe 2 is provided with a dirt collection groove 22 at the lower end edge of the lower scraper 6.
The total length of the screen 3 is greater than twice the length of the section of the screen 3 between the upper and lower scrapers 5, 6.
As shown in fig. 2, the screen 3 comprises a first use segment 33 and a second use segment 34. After the filter screen 3 is used for a period of time, impurities such as sludge and the like are attached to the outer wall of the filter screen 3, the filter screen 3 is pulled to move outwards through the pulling assembly 4, the upper scraper 5 scrapes the impurities attached to the outer wall of the filter screen 3, the first using section 33 of the filter screen 3 is cleaned, and pulling is stopped until the second using section 34 of the filter screen 3 is located between the upper scraper 5 and the lower scraper 6; the filter screen 3 continues to use a period of time, removes the outside effort of pulling subassembly 4 to filter screen 3, and filter screen 3 retrieves under the effect of reset subassembly, and until the first section 33 that uses of filter screen 3 moves between upper scraper 5 and lower scraper 6, and this in-process, lower scraper 6 strikes off impurity such as silt of the second section 34 outer wall that uses of filter screen 3, clearance filter screen 3 second section 34 that uses.
In the actual use process, the staff can control the outward movement and the recovery length of the filter screen 3 by controlling the moving distance of the pull rope 43.
In order to prevent impurities such as sludge from adhering to the surfaces of the upper blade 5 and the lower blade 6, a waterproof coating is applied to both side walls of the upper blade 5 opposite to the lower blade 6.
The pulling assembly 4 comprises an outer frame 41 arranged outside the concrete layer 12, a reel 42 rotatably connected to the outer frame 41, a pulling rope 43 wound outside the reel 42 and a motor 44 for driving the reel 42 to rotate, wherein the other end of the pulling rope 43 is fixed at the middle position of the head end of the filter screen 3.
The reset assembly comprises two springs 7 which are respectively positioned at two sides of the filter screen 3, the inner wall of the reinforcing pipe 2 continues to extend at the tail end of the sliding groove 21 to form an extending groove 23 which is arranged in an arc shape, the springs 7 are positioned in the extending groove 23, one end of each spring 7 is fixed to the extending groove 23, and the other end of each spring 7 is fixed to the sliding strip 32.
When the first using section 33 of the filter screen 3 is cleaned, the motor 44 drives the reel 42 to rotate, so that the pull rope 43 is wound, and the filter screen 3 is driven to move outwards; when the second using section 34 of the filter screen 3 is cleaned, the rotating shaft is driven by the motor 44 to rotate reversely, the pull rope 43 is discharged outwards, and meanwhile, the filter screen 3 is recovered to an initial state under the action of the spring 7.
A tunnel start and stop point foundation pit construction method for a water-rich soil layer comprises the following steps:
s1, arranging drainage ditches at the outer top of the foundation pit and the inner bottom of the foundation pit;
s2, paving a reinforcing mesh 11 on the surface of the side slope;
s3, horizontally driving the reinforced pipe 2 into the side slope and fixedly connecting the reinforced pipe 2 with the reinforcing mesh 11;
s4, spraying a concrete layer 12 on the slope surface of the side slope to further reinforce the surface of the side slope and the reinforcing pipe 2;
s5, the reinforcing pipe 2 is used as a drain pipe at the same time, after the filter screen 3 in the reinforcing pipe 2 is used for a period of time, impurities such as sludge and the like are attached to the outer wall of the filter screen 3, the filter screen 3 is driven to move outwards, the upper scraper 5 scrapes off the impurities attached to the outer wall of the filter screen 3, the first using section 33 of the filter screen 3 is cleaned, and pulling is stopped until the second using section 34 of the filter screen 3 is located between the upper scraper 5 and the lower scraper 6;
s5, the filter screen 3 is continuously used for a period of time, the filter screen 3 is recovered to an initial state, in the process, the lower scraper 6 scrapes impurities such as sludge on the outer wall of the second using section 34 of the filter screen 3, and the second using section 34 of the filter screen 3 is cleaned.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A tunnel start and stop point foundation pit construction method for a water-rich soil layer is characterized by comprising the following steps:
s1, arranging drainage ditches at the outer top of the foundation pit and the inner bottom of the foundation pit;
s2, paving a reinforcing mesh (11) on the surface of the side slope;
s3, horizontally driving a reinforced pipe (2) into the side slope, fixedly connecting the reinforced pipe (2) with a reinforcing mesh (11), wherein the inner cavity of the reinforced pipe (2) is hollow, and a filtering component is arranged at one end, inserted into a soil layer of the side slope, of the reinforced pipe (2);
and S4, spraying a concrete layer (12) on the slope surface of the side slope.
2. The method for constructing the foundation pit at the starting and stopping point of the tunnel in the water-rich soil layer according to claim 1, wherein the method comprises the following steps: the filter assembly comprises a filter screen (3) arranged in a coiled manner, and a winding axis (31) of the filter screen (3) is perpendicular to an axis of the reinforcing pipe (2).
3. The method for constructing the foundation pit at the starting and stopping point of the tunnel in the water-rich soil layer according to claim 2, wherein the method comprises the following steps: the reinforcing pipe (2) is a square pipe, and a space is reserved between two adjacent layers of the filter screen (3);
the filter screen (3) is connected to the inner wall of the reinforcing pipe (2) in a sliding mode along the winding direction of the filter screen, a pulling assembly (4) used for pulling the filter screen (3) outwards is arranged on the slope surface of the side slope, and a reset assembly used for enabling the filter screen (3) to reset is arranged in the inner cavity of the reinforcing pipe (2);
an upper scraper (5) used for scraping the sludge on the outer wall of the filter screen (3) is fixedly arranged on the top wall of the inner cavity of the reinforcing pipe (2).
4. The method for constructing the foundation pit at the starting and stopping point of the tunnel in the water-rich soil layer according to claim 3, wherein the method comprises the following steps: the inner cavity bottom wall of the reinforcing pipe (2) is provided with a lower scraper (6), and the total length of the filter screen (3) is greater than two times of the length of the segment of the filter screen (3) between the upper scraper (5) and the lower scraper (6).
5. The method for constructing the foundation pit at the starting and stopping point of the tunnel in the water-rich soil layer according to claim 4, wherein the method comprises the following steps: the lower scraper (6) is obliquely arranged, a dirt accumulation groove (22) is formed in the reinforcing pipe (2), and the dirt accumulation groove (22) is located at the lower end of the lower scraper (6).
6. The method for constructing the foundation pit at the starting and stopping point of the tunnel in the water-rich soil layer according to claim 4, wherein the method comprises the following steps: be equipped with sealed the pad between the both sides wall of going up scraper (5) and the both sides wall of reinforced pipe (2), be equipped with sealed the pad between the both sides wall of lower scraper (6) and the both sides wall of reinforced pipe (2).
7. The method for constructing the foundation pit at the starting and stopping point of the tunnel in the water-rich soil layer according to claim 4, wherein the method comprises the following steps: and two side walls of the upper scraper (5) opposite to the lower scraper (6) are coated with waterproof coatings.
8. The method for constructing the foundation pit at the starting and stopping point of the tunnel in the water-rich soil layer according to claim 3, wherein the method comprises the following steps: the pulling assembly (4) comprises a reel (42) arranged on a side slope, a pull rope (43) wound outside the reel (42) and a driving piece used for driving the reel (42) to rotate, and the other end of the pull rope (43) is fixedly arranged at the head end of the filter screen (3).
9. The method for constructing the foundation pit at the starting and stopping point of the tunnel in the water-rich soil layer according to claim 3, wherein the method comprises the following steps: the reset assembly comprises an elastic piece, one end of the elastic piece is fixedly arranged in the inner cavity of the reinforcing pipe (2), and the other end of the elastic piece is fixedly arranged at the tail end of the filter screen (3).
10. The method for constructing the foundation pit at the starting and stopping point of the tunnel in the water-rich soil layer according to claim 3, wherein the method comprises the following steps: the inner cavity side wall of the reinforcing pipe (2) is provided with a sliding groove (21) arranged along the winding direction of the filter screen (3), the side wall of the filter screen (3) is fixedly provided with a sliding strip (32) along the extending direction of the side wall, and the sliding strip (32) is in sliding fit in the sliding groove (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946786.0A CN115387361B (en) | 2022-08-09 | 2022-08-09 | Tunnel start-stop foundation pit construction method for water-rich soil layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946786.0A CN115387361B (en) | 2022-08-09 | 2022-08-09 | Tunnel start-stop foundation pit construction method for water-rich soil layer |
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| Publication Number | Publication Date |
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| CN115387361A true CN115387361A (en) | 2022-11-25 |
| CN115387361B CN115387361B (en) | 2023-08-11 |
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|---|---|---|---|---|
| GB2040655A (en) * | 1979-01-30 | 1980-09-03 | Laing John Services | Liquid channelling assembly |
| SU1071702A1 (en) * | 1982-01-18 | 1984-02-07 | Государственный всесоюзный дорожный научно-исследовательский институт | Belt drain |
| JPH02183006A (en) * | 1989-01-09 | 1990-07-17 | Sumitomo Metal Ind Ltd | Manufacturing method, its ground drainage member and anti-liquefaction method therewith |
| JP2001152459A (en) * | 1999-11-25 | 2001-06-05 | Ohbayashi Corp | Slope stabilizing construction method |
| CN203634933U (en) * | 2013-10-28 | 2014-06-11 | 山东华腾环保科技有限公司 | Suction filtering net of cam pump |
| CN104213564A (en) * | 2014-09-04 | 2014-12-17 | 中建四局第六建筑工程有限公司 | Excavation slope supporting structure and construction method thereof |
| KR20170071643A (en) * | 2015-12-15 | 2017-06-26 | 한국철도기술연구원 | Fixing device for perforated drainpipes of tunnel side walls and the construction method of perforated drainpipes therefor |
| CN109736334A (en) * | 2019-01-05 | 2019-05-10 | 中国建筑第二工程局有限公司 | Collapsible loess slope support construction device and method |
| CN211229224U (en) * | 2019-11-05 | 2020-08-11 | 江苏双楼建设集团有限公司 | Civil building prevents blockking up drainage structures |
| CN215539100U (en) * | 2021-01-26 | 2022-01-18 | 泗县龙宇农业合作社联合社 | Water conservancy pipeline filter equipment |
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2022
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| SU1071702A1 (en) * | 1982-01-18 | 1984-02-07 | Государственный всесоюзный дорожный научно-исследовательский институт | Belt drain |
| JPH02183006A (en) * | 1989-01-09 | 1990-07-17 | Sumitomo Metal Ind Ltd | Manufacturing method, its ground drainage member and anti-liquefaction method therewith |
| JP2001152459A (en) * | 1999-11-25 | 2001-06-05 | Ohbayashi Corp | Slope stabilizing construction method |
| CN203634933U (en) * | 2013-10-28 | 2014-06-11 | 山东华腾环保科技有限公司 | Suction filtering net of cam pump |
| CN104213564A (en) * | 2014-09-04 | 2014-12-17 | 中建四局第六建筑工程有限公司 | Excavation slope supporting structure and construction method thereof |
| KR20170071643A (en) * | 2015-12-15 | 2017-06-26 | 한국철도기술연구원 | Fixing device for perforated drainpipes of tunnel side walls and the construction method of perforated drainpipes therefor |
| CN109736334A (en) * | 2019-01-05 | 2019-05-10 | 中国建筑第二工程局有限公司 | Collapsible loess slope support construction device and method |
| CN211229224U (en) * | 2019-11-05 | 2020-08-11 | 江苏双楼建设集团有限公司 | Civil building prevents blockking up drainage structures |
| CN215539100U (en) * | 2021-01-26 | 2022-01-18 | 泗县龙宇农业合作社联合社 | Water conservancy pipeline filter equipment |
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| Publication number | Publication date |
|---|---|
| CN115387361B (en) | 2023-08-11 |
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