CN209083331U - A kind of long tunnel inclined shaft start tunneling district drainage system - Google Patents

Abstract

The utility model relates to a sectioned drainage system for long tunnel inclined shaft entry construction, which includes inclined shaft drainage and tunnel main hole drainage. The tunnel main hole drainage includes reverse-slope mechanical drainage and down-slope natural drainage. A mobile water pump station is arranged in the tunnel main hole. , Temporary water pump station and fixed water pump station, the collected water is drained step by step through the mobile water pump station and the temporary water pump station and finally collected into the fixed sump in the anti-slope section, and the down-slope section is collected into the fixed sump through the drainage side ditch. Finally, the water is discharged into the sump of the inclined well through the fixed water pump and the drainage pipe; the water is then discharged from the tunnel through the fixed water pump and the drainage pipe of the inclined well; the transverse intercepting ditch is also set up in the inclined well for the local watering section. It is connected through the open drainage channel, and finally connected with the sump of the inclined well. The utility model overcomes the problems of difficult drainage and poor local drainage during long-distance construction of the existing long tunnel, not only saves the construction cost, but also improves the construction speed and drainage efficiency.

Description

A segmented drainage system for long tunnel inclined shaft entry construction

technical field

The utility model belongs to the technical field of tunnel construction, and relates to a segmented drainage system for long tunnel inclined shaft entry construction.

Background technique

In the construction of long tunnels, complex geological and hydrological conditions are usually faced. The difficulties brought by long-distance ventilation, material transportation and drainage affect the construction safety and progress. The inclined shaft is used to enter the tunnel at a suitable position in the middle of the tunnel, and then the tunneling construction is carried out simultaneously or sequentially at the intersection of the inclined shaft and the main tunnel of the tunnel, which can greatly shorten the construction period and reduce the construction safety caused by the complex geological conditions of the long-distance tunnel. At this time, ventilation, material transportation and drainage are carried out in series with the main tunnel of the tunnel through the inclined shaft. However, drainage in long-distance tunnels with geological and water-rich structures is a difficult problem. The longer the tunnel, the larger the catchment area, and the unsmooth pumping and drainage along the slope and the reverse slope may cause flooding inside the tunnel and affect the face of the tunnel. Construction and movement of people and vehicles. At present, the drainage scheme of tunnel construction for inclined shaft entry is mainly to set up a centralized water pump station in the main tunnel of the tunnel, and to cooperate with the drainage pipe to extend the inclined shaft to the ground to discharge the accumulated water in the tunnel. However, for water-rich and extra-long tunnels, the amount of water inflow is large, which usually requires long drainage pipes and high-power pumps. Especially in the construction of double-hole tunnels, two sets of drainage systems need to be arranged. Increased construction cost and difficulty. Therefore, it is urgent to develop a set of effective drainage system for super-long tunnel inclined shaft entry construction to solve the drainage problem in the main tunnel and the inclined shaft.

Utility model content

The purpose of this utility model is to provide a convenient, practical and high-efficiency drainage system for long tunnels, to realize the overall drainage of the main tunnel and the inclined shaft of the double-hole small-slope long tunnel, to meet the drainage needs of simultaneous construction of multiple faces, and to solve the current Drainage problems in the construction of extra-long tunnels, and reduce construction costs and improve construction efficiency.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is as follows: a long tunnel inclined shaft entry construction segmented drainage system, including a main tunnel drainage system and an inclined shaft drainage system connected by pipelines;

The main tunnel drainage system includes a main tunnel fixed drainage station and a mobile drainage station, wherein the main tunnel fixed drainage station is adjacently arranged at the intersection of the tunnel main tunnel and the inclined shaft, the mobile drainage station is arranged at the tunnel face, and the mobile drainage station The station is connected with the fixed drainage station of the main tunnel;

The inclined shaft drainage system includes an inclined shaft fixed drainage station and a partial inclined shaft drainage part located on the upper part of the inclined shaft fixed drainage station. A water output inclined well; the partial drainage part of the inclined well includes several horizontal intercepting ditches arranged on the road surface of the partial watering zone of the inclined well at intervals, and the lateral intercepting ditches of the inclined well are vertically arranged; The vertical drainage open ditch of the inclined shaft at the edge of the road surface is connected with the horizontal intercepting ditch of each inclined shaft respectively.

Further, the fixed drainage station of the main tunnel includes a fixed water collection silo and a fixed water pump, wherein the input end of the fixed water collection silo is connected to the output end of the mobile drainage station, and the output end of the fixed water collection silo is connected to the inclined shaft fixed drainage station; The water pump transports the water in the fixed sump to the fixed drainage station of the inclined shaft.

Further, the number of the fixed water pumps is two, the input ends of the two fixed water pumps are respectively connected to the fixed water collecting bin, and the output ends are respectively connected to the fixed drainage station of the inclined well.

Further, the mobile drainage station includes a down-slope drainage part and a reverse-slope drainage part, wherein the down-slope drainage part includes a lateral intercepting ditch, and the horizontal intercepting ditch is connected to a fixed water collecting silo; the anti-slope drainage part includes a temporary sump pit. and a mobile water pump, wherein the mobile water pump transports the discharge water from the face to the temporary sump, and the temporary sump is connected to the fixed water silo.

Further, a temporary water pump is provided at the temporary sump, and the temporary water pump transports the water in the temporary sump to the fixed sump.

Further, the depth of the lateral intercepting ditch of the inclined well is 0.8m; the interval of the lateral intercepting ditches of the adjacent inclined wells is 50-100 m; Drainage station.

Further, the inclined well fixed drainage station includes inclined well water collecting bin and inclined well fixed water pump.

Further, the number of the inclined well fixed water pumps is two, the input ends of the two inclined well fixed water pumps are respectively connected to the inclined well water collecting bin, and the output ends are respectively connected to the fourth drain pipe.

Further, it also includes an outlet sump set at the outlet of the inclined well, and a submersible sewage pump is arranged in the outlet sump to discharge the water in the outlet sump in time.

Compared with the prior art, the present utility model at least has the following beneficial effects:

The utility model relates to a sectioned drainage system for the construction of a long tunnel inclined shaft entering a hole. The drainage station is set near the intersection of the main tunnel of the tunnel and the inclined shaft, and is connected with the inclined shaft drainage system pipeline, which facilitates the drainage of the collected water in the main tunnel to the inclined shaft drainage system, and then drains the tunnel through the inclined shaft drainage system. The pressure of discharging water from the main tunnel to the inclined well is reduced; the mobile drainage station is set near the face of the main tunnel, which is convenient for collecting the gushing water at the face. The drainage pressure is reduced, the risk of sudden flooding accidents is reduced, and the smoothness and efficiency of drainage are improved.

Further, the provision of two fixed water pumps improves the efficiency of draining the water in the fixed water collecting bin to the fixed drainage station of the inclined well, improves the efficiency of water discharge, and ensures that the water in the main tunnel can be discharged in time.

Further, in the reverse slope construction, the lateral intercepting ditch is used to locally collect the drainage of the slope, and transport it to the fixed water collection tank through the pipeline, making full use of the natural conditions, realizing the natural drainage of the reverse slope, saving the construction cost and reducing the equipment usage, which in turn reduces noise and the limited space occupied in the main tunnel.

Further, the position of the temporary sump and the temporary water pump can be adjusted according to the progress of the construction. In particular, the temporary water pump can always follow the construction site of the face to ensure that the gushing water at the face can be discharged in time.

Further, the local drainage part set in the inclined shaft adopts multiple intercepting ditches and vertical drainage open ditches for confluence along the slope. In the main tunnel of the tunnel, the natural slope of the inclined shaft is fully utilized. On the one hand, it ensures that the water in the partial watering area of the inclined shaft can be discharged in time, preventing the road surface from being slippery and affecting the construction safety in the inclined shaft; on the other hand, it makes full use of the inclined shaft. The natural slope of the well reduces the number of equipment used, thereby reducing noise pollution and site occupation.

Further, the depth of the horizontal intercepting ditch of the inclined shaft is set to 0.8m to ensure the water collecting capacity of the horizontal intercepting ditch of the inclined shaft, and it can be drained to the fixed drainage station of the inclined shaft in time through the vertical drainage open ditch of the inclined shaft, so that the water can be drained. The speed is higher than the inflow speed of the catchment, which prevents the occurrence of slippery road surface caused by excessive water influx in the partial watering zone in the inclined shaft; In the case of the inclined shaft pavement, it also ensures the timely discharge of local water spray.

Further, by arranging two fixed pumps in the inclined well, the water in the water collecting bin of the inclined well can be discharged to the ground in time, so as to ensure the efficiency of water discharge.

Further, the set outlet sump collectively collects the water discharged from the tunnel temporarily, and then discharges the sewage in time through the submersible sewage pump, preventing excessive water collection at the entrance of the inclined shaft and causing the water to be recharged into the tunnel inclined shaft. .

Description of drawings

Fig. 1 is the structural representation of the drainage system arrangement of the present utility model;

In the picture: 1-inclined shaft, 2-tunnel main hole, 3-mobile water pump, 4-first drainage pipe, 5-temporary sump, 6-temporary water pump, 7-second drainage pipe, 8-slope section Temporary sump, 9-transverse intercepting ditch, 10-drainage side ditch, 11-fixed sump, 12-fixed water pump, 13-third drainage pipe, 14-inclined well sump, 15-inclined well fixed Water pump, 16-fourth drainage pipe, 17-inclined well opening, 18-inclined well horizontal intercepting ditch, 19-inclined well vertical drainage open ditch.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Taking a double-hole single-track construction of a super-long tunnel of more than 5km as an example, the tunnel adopts an inclined shaft to enter the hole, and the two-way multi-facet construction is carried out at the same time. Realize the rapid construction of inclined shaft tunnel, the length of inclined shaft tunnel is less than 1500m.

Referring to Figure 1, the sectional drainage system of the inclined shaft entry construction of the long tunnel is divided into the drainage in the main tunnel 2 and the drainage in the inclined shaft. The left and right holes of the main tunnel 2 have a certain slope. The slope section is naturally drained by the catchment ditches. The water flowing from the left and right holes is concentratedly discharged to the inclined well water pump station, and finally discharged to the ground.

The mobile water pump 3 in the anti-slope section is set close to the face, and its position is adjusted according to the position of the face; the mobile water pump 3 collects the influx of water on the face, and adjusts the lift of the pump and the number of pumps according to the amount of water inflow, and the mobile water pump 3 The output end of 3 is connected to the first drainage pipe 4 to discharge the water gushing from the face to the temporary sump 5; the length of the first drainage pipe 4 can be adjusted, and a hose or a rubber pipe is generally used.

In the preferred embodiment of the present invention, when the distance between the mobile water pump station 3 and the temporary sump 5 is greater than 1000m, a high-lift mobile pump is used, and when the distance is less than 1000m, a low-lift mobile pump is used.

A temporary water pump 6 is provided at the temporary water collection pit 5 , the output end of the temporary water pump 6 is connected to the second drain pipe 7 , and the other end of the second drain pipe 7 is connected to the fixed water collection bin 11 , so that the temporary water collection tank 11 is connected to the temporary water pump 6 through the temporary water pump 6 . The accumulated water in the sump 5 is discharged to the fixed water collecting bin 11 .

Two fixed water pumps 12 are arranged beside the fixed water collecting bin 11, and the two fixed water pumps 12 are arranged in parallel. One end is connected to the inclined well water collecting bin 14 , so that the accumulated water in the fixed water collecting bin 11 is discharged to the inclined well water collecting bin 14 through two fixed water pumps 12 .

During the drainage of the tunnel construction along the slope, a temporary sump 8 is set in front of the tunnel face, and a lateral intercepting ditch 9 is set on one side of the temporary sump 8, and the lateral intercepting ditch 9 is connected to the temporary sump 8; The other end of the intercepting ditch 9 is connected to the drainage side ditch 10 arranged at the edge of the main tunnel road surface. The accumulated water is discharged to the fixed water collecting bin 11 .

Two inclined well fixed water pumps 15 are arranged next to the inclined well water collecting bin 14. The two inclined well fixed water pumps 15 are arranged in parallel. The output ends of the two inclined well fixed water pumps 15 are connected to a fourth drainage pipe 16. The other end of the pipe 16 extends to the outlet sump at the opening 17 of the inclined shaft, thus draining the water collected in the sump 14 of the inclined shaft out of the tunnel.

At the same time, in consideration of the phenomenon of water showering in the local area of the inclined well, in the present invention, a plurality of inclined well lateral intercepting trenches 18 are arranged under the local watering area of the inclined well 1, and all the inclined well lateral intercepting trenches 18 are arranged. 18 through the inclined shaft vertical drainage open ditch 19, wherein the inclined shaft vertical drainage open ditch 19 is arranged at the edge of the inclined shaft road surface, and the horizontal intercepting ditch 18 located at the bottom of the inclined shaft is arranged on the other side of the inclined shaft road surface. The vertical drainage open ditch 19 on one side of the inclined well is connected to the inclined well water collecting silo 14, so that the accumulated water in the upper part flows down along the longitudinal slope of the inclined well, so that the local water inflow of the inclined well 1 is collected into the inclined well concentrated water tank 14, Then, the water is discharged through the fixed water pumps 15 of the two inclined wells, thereby completing the collection and discharge of the water influx in the local water influx zone of the inclined well.

The vertical drainage open ditch 19 of the inclined shaft and the water collecting bin 14 of the inclined shaft can be arranged on the same side, or can be arranged on both sides; The drainage ditch 19 and the inclined well water collecting bin 14 are respectively arranged on both sides of the inclined well road surface.

In the preferred embodiment of the present invention, the mobile water pump 3 for removing the water in the palm area and the temporary water pump 6 for removing the accumulated water in the temporary sump are all relatively portable submersible pumps, and the fixed water pump 12 and the fixed water pump 15 in the inclined shaft are both A centrifugal pump is used.

An entrance sump is provided at the entrance of the inclined shaft 1, and the accumulated water in the tunnel discharged by the fixed pump 15 of the inclined shaft is discharged to the entrance sump, and the water in the entrance sump is discharged after treatment, thereby preventing surface water back into the tunnel.

The above content is only to illustrate the technical idea of the present utility model, and cannot limit the protection scope of the present utility model. Any changes made on the basis of the technical solution according to the technical idea proposed by the present utility model fall into the scope of the present utility model. within the scope of protection of the claims.

Claims (9)

1. a kind of long tunnel inclined shaft start tunneling district drainage system, which is characterized in that the main tunnel drainage including pipeline connection System and inclined shaft drainage system；

The main tunnel drainage system includes the fixed pumping station in main tunnel and mobile pumping station, wherein pumping station phase is fixed in main tunnel Neighbour's setting is in the main hole in tunnel and inclined shaft intersection, and mobile pumping station is arranged at face, and mobile pumping station and main tunnel Fixed pumping station connection；

The inclined shaft drainage system includes the fixed pumping station of inclined shaft and the inclined shaft local draining positioned at the fixed pumping station top of inclined shaft Portion, the input terminal of the fixed pumping station of the inclined shaft are connected to the fixed pumping station in main tunnel, and output end is exported ponding by pipeline oblique Well；Inclined shaft local draining portion includes that several inclined shafts being arranged at intervals on the road surface of inclined shaft part water drenching area laterally intercept water Ditch (18), inclined shaft transverse direction intercepting ditch (18) are vertically arranged；Further include be arranged in inclined shaft road surface edge inclined shaft vertical drainage it is bright Ditch (19), the bright ditch of inclined shaft vertical drainage (19) are respectively communicated with each inclined shaft transverse direction intercepting ditch (18).

2. a kind of long tunnel inclined shaft start tunneling district drainage system as described in claim 1, which is characterized in that the main tunnel The fixed pumping station in road includes fixed drain sump (11) and fixes water pump (12), is moved wherein the input terminal of fixed drain sump (11) is connected to The output end of dynamic pumping station, the fixed pumping station of output end connection inclined shaft of fixed drain sump (11)；Fixed water pump (12) will be fixed Water in drain sump (11) is delivered to the fixed pumping station of inclined shaft.

3. a kind of long tunnel inclined shaft start tunneling district drainage system as claimed in claim 2, which is characterized in that the fixation The quantity of water pump (12) is two, and the input terminal of two fixed water pumps (12) is respectively communicated with fixed drain sump (11), output end point It Lian Tong not the fixed pumping station of inclined shaft.

4. a kind of long tunnel inclined shaft start tunneling district drainage system as described in claim 1, which is characterized in that the movement Pumping station includes along slope Drainage Division and counter-slope Drainage Division, wherein including lateral intercepting ditch (9), lateral intercepting ditch along slope Drainage Division (9) pipeline is connected to fixed drain sump (11)；Counter-slope Drainage Division includes interim catch pit (5) and movement water pump (3), wherein moving water The discharge water of face is delivered to interim catch pit (5) by pump (3), and interim catch pit (5) pipeline is connected to fixed drain sump (11).

5. a kind of long tunnel inclined shaft start tunneling district drainage system as claimed in claim 4, which is characterized in that described interim It is provided at catch pit (5) interim water pump (6), the water in interim catch pit (5) is delivered to fixed drain sump by interim water pump (6) (11)。

6. a kind of long tunnel inclined shaft start tunneling district drainage system as described in claim 1, which is characterized in that the inclined shaft The depth of lateral intercepting ditch (18) is 0.8m；50-100m is divided between adjacent inclined shaft transverse direction intercepting ditch (18)；Lowest part it is oblique The fixed pumping station of end pipe connection inclined shaft of well transverse direction intercepting ditch (18).

7. a kind of long tunnel inclined shaft start tunneling district drainage system as described in claim 1, which is characterized in that the inclined shaft Fixed pumping station includes that inclined shaft drain sump (14) and inclined shaft are fixed water pump (15), and the input terminal connection of inclined shaft fixed water pump (15) is oblique Water is exported inclined shaft by the 4th drainpipe (16) by well drain sump (14), output end.

8. a kind of long tunnel inclined shaft start tunneling district drainage system as claimed in claim 7, which is characterized in that the inclined shaft The quantity of fixed water pump (15) is two, and the input terminal of two inclined shafts fixed water pump (15) is respectively communicated with inclined shaft drain sump (14), Output end is respectively communicated with the 4th drainpipe (16).

9. a kind of long tunnel inclined shaft start tunneling district drainage system as described in claim 1, which is characterized in that further include setting The outlet catch pit in inclined shaft exit is set, exports in catch pit and is provided with submersible sewage pump, the water exported in catch pit is arranged in time It puts.