CN110578553B - Siphon type reverse slope drainage system and drainage method - Google Patents
Siphon type reverse slope drainage system and drainage method Download PDFInfo
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- CN110578553B CN110578553B CN201910874996.1A CN201910874996A CN110578553B CN 110578553 B CN110578553 B CN 110578553B CN 201910874996 A CN201910874996 A CN 201910874996A CN 110578553 B CN110578553 B CN 110578553B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 289
- 238000005086 pumping Methods 0.000 claims abstract description 35
- 238000000746 purification Methods 0.000 claims description 25
- 238000004062 sedimentation Methods 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 11
- 239000011362 coarse particle Substances 0.000 claims description 10
- 239000010419 fine particle Substances 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 101150054854 POU1F1 gene Proteins 0.000 description 12
- 238000009412 basement excavation Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 230000002411 adverse Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 239000011435 rock Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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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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- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F10/00—Siphons
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Abstract
The invention relates to the technical field of tunnel counter-slope drainage, and provides a siphon type counter-slope drainage system, which comprises a water collecting pit, a water pumping device, a water collecting device, a siphon drainage pipe and a vacuum pump, wherein the water pumping device is arranged in the water collecting pit; the water collecting pit is arranged in the tunnel; the water collecting device is placed in the tunnel, and an inlet of the water collecting device is communicated with the water collecting pit through the water pumping device; the outlet of the water collecting device is communicated with the inlet of the siphon drain pipe, the outlet of the siphon drain pipe is arranged outside the tunnel, and the elevation of the outlet of the siphon drain pipe is lower than that of the outlet of the water collecting device; the inlet of the vacuum pump is communicated with the siphon water drain pipe through an exhaust pipe. The invention utilizes the siphon principle to automatically drain the water in the water collecting device to the outside of the tunnel, effectively solves the problem of water accumulation on the tunnel face of the reverse slope tunnel, does not need electric power to drive in the automatic water drainage process, saves a large number of grading water collecting wells and pump stations in the traditional reverse slope water drainage mode, greatly saves manpower, electric power, raw materials and the like, and has the advantages of environmental protection and energy saving.
Description
Technical Field
The invention relates to the technical field of tunnel reverse slope drainage, in particular to a siphon reverse slope drainage system and a drainage method.
Background
The tunnel is constructed in a mountain with complex geological and hydrological conditions, the water prevention and drainage design of the tunnel follows the principle of prevention, drainage, interception and blockage, according to local conditions and comprehensive treatment, and the treatment of the underground water for traffic is mainly the principle of drainage. Therefore, drainage is a difficult point in the construction of the water-rich tunnel, particularly in the excavation of the tunnel at the reverse slope section of the long and large tunnel, underground water cannot be naturally drained along the designed side ditch and the central drainage ditch, but is collected to the construction excavation surface along the reverse slope, if the underground water cannot be drained timely and effectively, water accumulation on the tunnel face can be caused, normal construction of operations such as excavation, supporting, lining and the like can be seriously interfered, and even geological disasters such as large soft rock deformation, surrounding rock collapse and the like can be caused in serious cases, so that engineering accidents are caused.
At present, the technical scheme of tunnel adverse slope drainage treatment is that a grading water collecting well and a pump station are basically arranged, and accumulated water on the tunnel surface is pumped in a grading mode in a mechanical pumping mode until the accumulated water is discharged out of a tunnel. Application number is 201820348100.7, in the patent application who is the name of railway single track tunnel adverse slope drainage system, although the adverse slope drainage system has been disclosed, but this kind of drainage system also need construct a sump pit and pump station every 50 ~ 200m in the tunnel, draws water by the electric drive water pump, and is great to equipment, material, artifical input, owing to set up multistage suction pump, power consumption is great to the later stage needs backfill a large amount of sump pits.
Disclosure of Invention
The invention aims to provide a siphon type reverse slope drainage system and a drainage method for saving electric power resources.
The technical scheme adopted by the invention for solving the technical problems is as follows: the siphon type counter-slope drainage system comprises a water collecting pit, a water pumping device, a water collecting device, a siphon drainage pipe and a vacuum pump; the water collecting pit is arranged in the tunnel; the water collecting device is placed in the tunnel, and an inlet of the water collecting device is communicated with the water collecting pit through the water pumping device; the outlet of the water collecting device is communicated with the inlet of the siphon drain pipe, the outlet of the siphon drain pipe is arranged outside the tunnel, and the elevation of the outlet of the siphon drain pipe is lower than that of the outlet of the water collecting device; and the inlet of the vacuum pump is communicated with the siphon water drainage pipe through an exhaust pipe.
Further, still including setting up in the outside sedimentation purification tank in tunnel, the export setting of siphon drain pipe is in sedimentation purification tank.
Further, the water collecting device comprises a shell with a chamber inside; the cavity in the shell is divided into a water inlet area communicated with an inlet of the water collecting device and a water collecting area communicated with an outlet of the water collecting device by the partition plate which is vertically arranged in the shell; the partition plate comprises a first filter sieve positioned below and a water-stop plate positioned above.
Furthermore, a second filter sieve with one side connected with the water-stop sheet is arranged in the water inlet area in the shell, and the sieve mesh size of the first filter sieve is smaller than that of the second filter sieve; the second filter sieve divides the water inlet area into a coarse particle filter area positioned above the second filter sieve and a fine particle filter area positioned below the second filter sieve; and the inlet of the water collecting device is communicated with the coarse particle filtering area.
Furthermore, the bottom of the water collecting device is provided with a caster.
Further, the water pumping device comprises a water pump; the inlet of the water pump is communicated with the water collecting pit, and the outlet of the water pump is communicated with the inlet of the water collecting device.
Furthermore, the water pump is the immersible pump, and this immersible pump sets up in the sump pit, and this immersible pump's export communicates through the import of drinking-water pipe with water collection device.
The siphon type reverse slope drainage method adopts a siphon type reverse slope drainage system to drain water, and comprises the following steps,
s1, digging a water collecting pit in the tunnel close to the tunnel face, placing a water collecting device in a non-operation area behind the tunnel face, and communicating the water collecting pit with the water collecting device through a water pumping device; excavating a sedimentation purification tank outside the tunnel, communicating an inlet of a siphon drain pipe with an outlet of a water collecting device, and extending an outlet of the siphon drain pipe into the lower part of the water surface in the sedimentation purification tank; an inlet of a vacuum pump is communicated with a siphon drain pipe through an exhaust pipe;
s2, starting a water pumping device, and pumping water in the water collecting pit into the water collecting device;
and S3, starting the vacuum pump, and closing the vacuum pump after the siphon drain pipe is filled with water.
The invention has the beneficial effects that: according to the siphon type reverse slope drainage system and the drainage method, the water collecting pit is arranged and used for collecting rock wall underground water, tunnel face reverse water and in-tunnel reverse slope water after surrounding rock excavation; by arranging the water pumping device, water in the water collecting pit is pumped into the water collecting device, so that a relatively dry and favorable working environment is created for excavation, supporting and lining of a tunnel face; through setting up siphon drain pipe and vacuum pump, utilize the inside and outside formation pressure differential that the vacuum pump made the siphon drain pipe, and then make the water among the water-collecting device be full of the siphon drain pipe under the effect of pressure differential, then utilize the siphon principle of siphon drain pipe to arrange the tunnel outside with the water among the water-collecting device is automatic, effectively solve the problem of adverse slope tunnel face ponding, do not need electric drive at the in-process of automatic drainage, a large amount of hierarchical sump pit and pump station in the traditional adverse slope drainage mode have been saved, the manpower has been saved greatly, electric power, raw and other materials, the advantage of environmental protection and energy saving has. The invention also has the advantages of flexible arrangement, good reliability, strong applicability, small occupied space in the tunnel, no interference to construction and reusability.
Drawings
FIG. 1 is a schematic view of a siphonic reverse slope drainage system according to an embodiment of the present invention;
fig. 2 is a sectional view of a water collecting device in an embodiment of the present invention.
The reference numbers in the figures are: 1-a water collecting pit, 2-a water pumping device, 3-a water collecting device, 4-a siphon water discharging pipe, 5-a vacuum pump, 6-a sedimentation purification tank, 7-a palm surface, 8-a ditch, 9-an air pumping pipe, 21-a submersible pump, 22-an air pumping pipe, 31-a shell, 32-a partition plate, 33-an inlet area, 34-a water collecting area, 35-a second filter screen, 36-a caster, 37-an inlet pipe, 38-an outlet pipe, 321-a first filter screen, 322-a water-stop plate, 331-a coarse particle filter area and 332-a fine particle filter area.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The siphon type counter-slope drainage system comprises a water collecting pit 1, a water pumping device 2, a water collecting device 3, a siphon drainage pipe 4 and a vacuum pump 5; the water collecting pit 1 is arranged in the tunnel; the water collecting device 3 is placed in the tunnel, and an inlet of the water collecting device 3 is communicated with the water collecting pit 1 through the water pumping device 2; the outlet of the water collecting device 3 is communicated with the inlet of the siphon water discharge pipe 4, the outlet of the siphon water discharge pipe 4 is arranged outside the tunnel, and the elevation of the outlet of the siphon water discharge pipe 4 is lower than that of the outlet of the water collecting device 3; and the inlet of the vacuum pump 5 is communicated with the siphon water drainage pipe 4 through an air suction pipe 9.
The tunnel face 7 refers to the working face of the excavated tunnel which is continuously pushed forward. As shown in fig. 1, the sump 1 is a temporarily excavated sump, and is provided near a tunnel face 7 of the water-rich tunnel to collect rock wall groundwater, tunnel face reverse water, and in-tunnel reverse slope water after tunnel excavation.
The water collecting device 3 is a container for temporarily storing groundwater and is placed at a non-working area behind the tunnel face 7 of the tunnel. The water pumping device 2 is used for pumping water in the water collecting pit 1 into the water collecting device 3 in time and quickly and storing the water temporarily, and creates a relatively dry and favorable operation environment for construction procedures of excavation, support, lining and the like of the tunnel face 7.
The vacuum pump 5 is communicated with the siphon water discharge pipe 4 through an air exhaust pipe 9, and a valve is arranged on the air exhaust pipe 9; the internal pressure of the siphon water drainage pipe 4 can be reduced through the vacuum pump 5, so that the external pressure of the siphon water drainage pipe 4 is greater than the internal pressure of the siphon water drainage pipe, an internal-external pressure difference is formed, and then the water in the water collection device 3 is automatically filled in the whole siphon water drainage pipe 4 under the action of the pressure difference, and the starting process of a water drainage system is completed. The vacuum pump 5 is arranged outside the tunnel and is arranged near a slope or a ditch 8 with the elevation lower than the tunnel face 7. Preferably, the level of the connection position of the suction pipe 9 and the siphon drain pipe 4 is lower than the level of the outlet of the water collecting device 3.
The working principle of the siphon type reverse slope drainage system of the embodiment is as follows: after the siphon drainage system is installed, as shown in fig. 1, the water pumping device 2 is started to pump the water in the sump 1 into the water collecting device 3 and submerge the outlet of the water collecting device 3; then the outlet of the siphon water outlet pipe 4 is closed, for example, the outlet of the siphon water outlet pipe 4 can be closed by installing a valve; open the valve on the exhaust tube 9, start vacuum pump 5, because the both ends of siphon drain pipe 4 are all sealed, therefore the inside pressure of siphon drain pipe 4 will reduce, make siphon drain pipe 4's external pressure be greater than its internal pressure, under the effect of inside and outside pressure difference, make the water among the water-collecting device 3 flow into siphon drain pipe 4 automatically, fill water back when siphon drain pipe 4, close vacuum pump 5, and close the valve on the exhaust tube 9, then open siphon drain pipe 4's export, because the elevation of siphon drain pipe 4's export is less than the elevation of water-collecting device 3's export, consequently under the siphon effect, just can make the water automatic flow in the water-collecting device 3 discharge to the tunnel outside. In order to observe the water condition in the siphon drain pipe 4 conveniently, the siphon drain pipe 4 is preferably made of transparent materials.
According to the siphon-type counter-slope drainage system provided by the embodiment of the invention, the vacuum pump 5 is utilized to enable the inside and the outside of the siphon drainage pipe 4 to form pressure difference, so that the siphon drainage pipe 4 is filled with water in the water collection device 3 under the action of the pressure difference, then the siphon principle of the siphon drainage pipe 4 is utilized to automatically drain the water in the water collection device 3 to the outside of the tunnel, the problem of water accumulation on the tunnel face 7 of the counter-slope tunnel is effectively solved, electric power drive is not needed in the automatic drainage process, a large number of grading water collection wells and pump stations in the traditional counter-slope drainage mode are omitted, manpower, electric power, raw materials and the like are greatly saved, and the system has the advantages of environmental protection and energy saving. The invention also has the advantages of flexible arrangement, good reliability, strong applicability, small occupied space in the tunnel, no interference to construction and reusability.
As shown in fig. 1, the siphon-type adverse slope drainage system of the embodiment of the present invention further includes a sedimentation purification tank 6 disposed outside the tunnel, and an outlet of the siphon drainage pipe 4 is disposed in the sedimentation purification tank 6. The sedimentation purification tank 6 is arranged outside the tunnel and is near a side slope or ditch 8 with the elevation lower than the tunnel face 7; the sedimentation purification tank 6 and the ditch 8 near the tunnel form a connecting waterway, and the elevation of the highest water surface in the sedimentation purification tank 6 is lower than the elevation of the outlet of the water collecting device 3. After water in the siphon water discharge pipe 4 flows into the sedimentation and purification tank 6, the water is subjected to fractional sedimentation and purification treatment in the sedimentation and purification tank 6, and is discharged and introduced into a nearby natural water system through the consequent ditch 8 after the water meets the discharge standard through inspection.
The siphon type reverse slope drainage method adopts the siphon type reverse slope drainage system of the embodiment to drain water, and comprises the following steps,
s1, digging a water collecting pit 1 in the tunnel close to the tunnel face 7, placing a water collecting device 3 in a non-operation area behind the tunnel face 7, and communicating the water collecting pit 1 with the water collecting device 3 through a water pumping device 2; excavating a sedimentation purification tank 6 outside the tunnel, communicating an inlet of a siphon drain pipe 4 with an outlet of the water collecting device 3, and extending an outlet of the siphon drain pipe 4 below the water surface in the sedimentation purification tank 6; an inlet of a vacuum pump 5 is communicated with a siphon water drainage pipe 4 through an air suction pipe 9;
s2, starting the water pumping device 2, and pumping the water in the water collecting pit 1 to the water collecting device 3;
and S3, starting the vacuum pump 5, and closing the vacuum pump 5 after the siphon water discharge pipe 4 is filled with water.
In step S1, the drainage system is constructed and installed, and the sump 1 is a temporarily excavated sump for collecting rock wall groundwater, tunnel face reverse water, and in-tunnel reverse slope water after tunnel excavation. The outlet of the siphon drain pipe 4 is extended into the lower part of the water surface in the sedimentation and purification tank 6, and the outlet of the siphon drain pipe 4 is sealed by the water body in the sedimentation and purification tank 6.
In step S2, after the drainage system in step S1 is constructed, the water pumping device 2 is started to pump the water in the sump 1 into the water collecting device 3 in time and quickly for temporary storage, so as to create a relatively dry and favorable working environment for the construction procedures of excavation, supporting, lining and the like of the tunnel face 7, and the water in the water collecting device 3 submerges the outlet of the water collecting device 3, thereby realizing the sealing of the inlet of the siphon drainage pipe 4.
In step S3, the vacuum pump 5 is started, the valve on the air exhaust pipe 9 is opened, because both ends of the siphon drain pipe 4 are closed, the pressure inside the siphon drain pipe 4 is reduced, so that the pressure outside the siphon drain pipe 4 is higher than the pressure inside the siphon drain pipe, under the action of the difference between the internal pressure and the external pressure, the water in the water collection device 3 is automatically flowed into the siphon drain pipe 4, after the siphon drain pipe 4 is filled with water, the vacuum pump 5 is closed, and the valve on the air exhaust pipe 9 is closed, at this time, the vacuum communicating vessel is formed by utilizing the height difference between the outlet of the water collection device 3 and the water surface of the sedimentation purification tank 6 and the siphon drain pipe 4 therebetween, and the water in the water collection device 3 is discharged into the sedimentation purification tank 6 outside the hole along the siphon drain pipe 4 under the action of siphon, thereby realizing the function of automatic reverse slope drainage.
The water in the sedimentation and purification tank 6 is subjected to fractional sedimentation and purification treatment, and is discharged and introduced into a nearby natural water system through the consequent ditch 8 after the water meets the discharge standard.
As shown in fig. 1, the water pumping device 2 comprises a water pump; the inlet of the water pump is communicated with the water collecting pit 1, and the outlet of the water pump is communicated with the inlet of the water collecting device 3. When in use, water in the water collecting pit 1 is pumped to the water collecting device 3 by the water pump. Preferably, the water pump is a submersible pump 21, the submersible pump 21 is arranged in the sump 1, and an outlet of the submersible pump 21 is communicated with an inlet of the water collecting device 3 through a pumping pipe 22. When in use, the whole unit of the submersible pump 21 can be submerged to work, and water in the water collecting pit 1 is pumped to the water collecting device 3 through the water pumping pipe 22.
In the process of pumping the water in the water collecting pit 1 to the water collecting device 3 through the water pumping device 2, sandstone particles and impurities can be mixed in the water body, and when the water is discharged through the siphon water discharge pipe 4, the pipelines are easily blocked by the particles and the impurities.
In order to avoid clogging of the siphon drain 4 by the above-mentioned particles and impurities, the water collecting device 3 preferably comprises a housing 31 having a chamber inside; a vertically arranged partition plate 32 is arranged in the shell 31, and the partition plate 32 divides the chamber in the shell 31 into a water inlet area 33 communicated with the inlet of the water collecting device 3 and a water collecting area 34 communicated with the outlet of the water collecting device 3; the partition plate 32 includes a first filter screen 321 located below and a water blocking plate 322 located above.
As shown in fig. 2, the water collecting device 3 comprises a housing 31 having a chamber therein, and the size of the chamber inside the housing 31 can be designed according to the actual water discharge flow and reserve requirement of the tunnel. A vertically arranged partition plate 32 is arranged in the shell 31, and the partition plate 32 divides the chamber in the shell 31 into a water inlet area 33 positioned on the left side of the partition plate 32 and a water collecting area 34 positioned on the right side of the partition plate 32. The shell 31 is provided with a water inlet pipe 37 communicated with the water inlet area 33, and the water inlet pipe 37 is communicated with the water pumping pipe 22; the shell 31 is provided with a water outlet pipe 38 communicated with the water collecting area 34, and the water outlet pipe 38 is communicated with the siphon water outlet pipe 4. Specifically, the partition plate 32 includes a first filter screen 321 located below and a water-stop plate 322 located above; the water-stop sheet 322 plays a role of blocking and isolating and is used for isolating the water inlet area 33 and the water collecting area 34; the first filter screen 321 plays a role in filtering particulate matters and impurities in the water inlet area 33, and the filtered water is collected in the water collecting area 34.
Preferably, the water inlet area 33 in the shell 31 is further provided with a second filter sieve 35, one side of the second filter sieve 35 is connected with the water stop sheet 322, and the sieve pore size of the first filter sieve 321 is smaller than that of the second filter sieve 35; the second filter screen 35 dividing the feed water zone 33 into a coarse particle filtration zone 331 above the second filter screen 35 and a fine particle filtration zone 332 below the second filter screen 35; the inlet of the water collecting means 3 communicates with the coarse particle filtering section 331.
As shown in fig. 2, the water inlet pipe 37 of the housing 31 is communicated with the coarse particle filtering area 331; according to the actual drainage requirement, the number of the water outlet pipes 38 on the shell 31 can be one or more; when the number of the outlet pipes 38 is plural, as shown in fig. 1, each of the outlet pipes 38 communicates with one siphon drain pipe 4. During implementation, water collected in the water collecting pit 1 is pumped to the coarse particle filtering area 331 of the water collecting device 3 through the water pumping device 2, coarse particles with large particle sizes such as stones and gravels in the water body are filtered through the second filtering screen 35, then the water enters the fine particle filtering area 332, fine particles with small particle sizes such as powder sand and fine sand in the water body are filtered through the first filtering screen 321, then the water enters the water collecting area 34 to be collected, and then the water is discharged to the outside of the tunnel through the siphon water discharging pipe 4.
According to the water collecting device 3 provided by the embodiment of the invention, the multistage filter sieves are arranged to filter particles and impurities with different sizes in the water body in a grading manner, so that the particles and the impurities in the water body are prevented from blocking a pipeline, the service life of the whole drainage device is prolonged, and the maintenance frequency of the drainage device in the use process is reduced.
In order to facilitate the movement of the water collecting device 3 in the tunnel, casters 36 are provided at the bottom of the water collecting device 3. As shown in fig. 1 and 2, four casters 36 are disposed at the bottom of the water collecting device 3, the casters 36 are universal casters, and further, the casters 36 are casters with braking pins, so that the water collecting device 3 can move freely and fix a position in a tunnel.
Claims (6)
1. The siphon type counter-slope drainage system is characterized by comprising a water collecting pit (1), a water pumping device (2), a water collecting device (3), a siphon drainage pipe (4) and a vacuum pump (5); the water collecting pit (1) is arranged in the tunnel; the water collecting device (3) is placed in the tunnel, and an inlet of the water collecting device (3) is communicated with the water collecting pit (1) through the water pumping device (2); the outlet of the water collecting device (3) is communicated with the inlet of the siphon drain pipe (4), the outlet of the siphon drain pipe (4) is arranged outside the tunnel, and the elevation of the outlet of the siphon drain pipe (4) is lower than that of the outlet of the water collecting device (3); the inlet of the vacuum pump (5) is communicated with the siphon water drainage pipe (4) through an air suction pipe (9); the bottom of the water collecting device (3) is provided with a caster (36);
the water collecting device (3) comprises a housing (31) with a chamber inside; a vertically arranged partition plate (32) is arranged in the shell (31), and the partition plate (32) divides a chamber in the shell (31) into a water inlet area (33) communicated with an inlet of the water collecting device (3) and a water collecting area (34) communicated with an outlet of the water collecting device (3); the partition plate (32) comprises a first filter screen (321) positioned below and a water-stop plate (322) positioned above.
2. The siphonic reverse slope drainage system according to claim 1, further comprising a sedimentation purification tank (6) arranged outside the tunnel, wherein the outlet of the siphonic drainage pipe (4) is arranged in the sedimentation purification tank (6).
3. The siphonic counter-slope drainage system according to claim 2, wherein the water inlet area (33) in the shell (31) is further provided with a second filter screen (35) connected with the water stop sheet (322) at one side, and the mesh size of the first filter screen (321) is smaller than that of the second filter screen (35); the second filter screen (35) divides the feed water zone (33) into a coarse particle filter zone (331) above the second filter screen (35) and a fine particle filter zone (332) below the second filter screen (35); the inlet of the water collecting device (3) is communicated with the coarse particle filtering area (331).
4. The siphonic counter-slope drainage system according to claim 1 or 2, wherein the water pumping device (2) comprises a water pump; the inlet of the water pump is communicated with the water collecting pit (1), and the outlet of the water pump is communicated with the inlet of the water collecting device (3).
5. The siphonic counter-slope drainage system according to claim 4, wherein the water pump is a submersible pump (21), the submersible pump (21) is arranged in the sump (1), and an outlet of the submersible pump (21) is communicated with an inlet of the water collecting device (3) through a water suction pipe (22).
6. A siphonic reverse hill drainage method using the siphonic reverse hill drainage system according to claim 2 or 3 for drainage, comprising the steps of,
s1, digging a water collecting pit (1) in the tunnel close to the tunnel face (7), placing a water collecting device (3) in a non-operation area behind the tunnel face (7), and communicating the water collecting pit (1) with the water collecting device (3) through a water pumping device (2); excavating a sedimentation purification tank (6) outside the tunnel, communicating an inlet of a siphon drain pipe (4) with an outlet of the water collecting device (3), and extending an outlet of the siphon drain pipe (4) into the lower part of the water surface in the sedimentation purification tank (6); an inlet of a vacuum pump (5) is communicated with a siphon water drainage pipe (4) through an air suction pipe (9);
s2, starting the water pumping device (2) to pump the water in the water collecting pit (1) into the water collecting device (3);
and S3, starting the vacuum pump (5), and closing the vacuum pump (5) after the siphon water drainage pipe (4) is filled with water.
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| CN102251529A (en) * | 2011-06-02 | 2011-11-23 | 浙江大学 | Self-balancing siphon drainage method by using side slope declining drill hole |
| CN202122877U (en) * | 2011-06-17 | 2012-01-25 | 无锡市政设计研究院有限公司 | Device for filtering and purifying rain water |
| CN204185871U (en) * | 2014-09-15 | 2015-03-04 | 浙江大学 | A kind of high-lift siphon drainge system of self-recoverage side slope of exempting from the reverse setting-out of power |
| CN107237650B (en) * | 2017-06-30 | 2020-02-11 | 浙江大学 | Drilling siphon negative pressure drainage system and method for treating water seepage of tunnel wall |
| CN207526525U (en) * | 2017-11-08 | 2018-06-22 | 中交第二航务工程局有限公司 | A kind of major long tunnel counter-slope energy-saving drain device |
| CN207974129U (en) * | 2017-12-27 | 2018-10-16 | 中建三局第二建设工程有限责任公司 | A kind of foundation pit energy-saving drainage system |
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2019
- 2019-09-17 CN CN201910874996.1A patent/CN110578553B/en active Active
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