CN207033489U - Water rich strata tunnel bottom discharge structure - Google Patents

Abstract

It the utility model is related to water rich strata tunnel bottom discharge structure, railway roadbed bottom plate is set every sky above inverted arch, bearing pile is laid between railway roadbed bottom plate and inverted arch, tunnel bottom is formed between railway roadbed bottom plate and inverted arch crosses water culvert, and drain-side ditch connected water culvert by lateral sulcus drainpipe；Cross water culvert bottom surface and be laid with sump, downhole end of catchmenting is extended in the filtering captation below inverted arch through inverted arch, and bottom of catchmenting and side wall are equipped with spilled water hole, are provided with filter layer on the outside of spilled water hole, mono-directional drainage is provided with sump.The utility model changes inverted arch fill part of the prior art to be substituted by railway roadbed bottom plate and bearing pile, on the basis of tunnel structure safety is ensured, is increased tunnel drainage system discharge section area, is improved tunnel drainage ability；And the discharge of the underground water below water rich strata tunnel inverted arch is realized simultaneously, tunnel bottom hydraulic pressure is reduced, is advantageous to prevent the appearance for the diseases such as tunnel inverted arch is swelled, railway roadbed is risen soil.

Description

Water rich strata tunnel bottom discharge structure

Technical field

It the utility model is related to tunnel drainage facility technology field, more particularly to water rich strata tunnel bottom discharge structure.

Background technology

In recent years, with traffic infrastructure Large scale construction, many complicated rich water tunnels of growing up are being built or Build.Existing tunnel Drainage Design is designed based on tunnel conventional drainage amount, and the water on tunnel structure periphery passes through preliminary bracing Infiltration is final to discharge outside hole via the center gutter in draining blind pipe ejectment to tunnel structure body.Specifically, as shown in figure 1, ground Lower water penetrates into circle draining blind pipe (sequence number 2) by preliminary bracing (sequence number 1), and circle draining blind pipe (sequence number 2) is every along longitudinal direction Be connected every 10m along hole chow ring to laying, its lower end with longitudinal drainage blind pipe (sequence number 8), longitudinal drainage blind pipe (sequence number 8) every 10-20m leaves a delivery port, is connected by transverse drainage blind pipe (sequence number 5) with draining lateral sulcus (sequence number 6), draining lateral sulcus (sequence Number 6) it is mainly used in collecting underground water and underground water being passed through into transverse drainage passage (sequence number 9) introducing centre drain (sequence number 7), most underground water discharge tunnel is external at last.

But for rich water tunnel, especially under continuous rainfall or Severe rainstorm weather condition, due to tunnel internal ditch The cross-section of river free degree is little, and drainability is limited, can not timely and effective ejectment tunnel-liner behind ponding so that arch ring is born The effect of high hydraulic pressure, the problems such as causing fracturing failures of tunnel lining, percolating water, cause driving potential safety hazard tunnel in.

In addition, existing tunnel Drainage Design utilizes the Action of Gravity Field of water, by the ejectment from the top down of tunnel arch behind ponding To centre drain.Because centre drain is arranged within tunnel, tunnel bottom water can not be discharged；In addition, existing row Tunnel bottom (abbreviation tunnel bottom) mainly includes in aqueous systems：Bottom country rock, inverted arch preliminary bracing, inverted arch concrete two serve as a contrast, inverted arch Filling, pavement structure, trackside gutter, Deeply buried ditch, kerbstone, cable trough etc..Due to lacking effective tunnel bottom displacement hull System, internal draining can not discharge tunnel bottom water, cause ponding below tunnel inverted arch can not effective ejectment so that inverted arch is held By part hydraulic pressure, so as to cause rise soil etc. water damage event, the maintenance of inverted arch protuberance, railway roadbed deformation, lining cracking, railway roadbed to be controlled Manage extremely difficult.

Utility model content

The utility model aims to provide a kind of water rich strata tunnel bottom discharge structure, using railway roadbed bottom plate and is arranged at intervals carrying Stake substitutes inverted arch filling of the prior art, can form the cross-section of river between bearing pile, its discharge section area is much larger than center Gutter, there is powerful drainability, can meet the needs of rich water tunnel a large amount of drainings, can be quick, timely and effectively draw Tunnel-liner behind water under high pressure is arranged, reduces underground water and tunnel lining structure is destroyed.

To reach above-mentioned purpose, the technical solution adopted in the utility model is as follows：

Water rich strata tunnel bottom discharge structure, including inverted arch and the draining lateral sulcus of tunnel both sides, set above inverted arch every sky Railway roadbed bottom plate, bearing pile is laid between the railway roadbed bottom plate and inverted arch, tunnel bottom is formed between the railway roadbed bottom plate and inverted arch Water culvert is crossed, the drain-side ditch connected water culvert by lateral sulcus drainpipe, and the lateral sulcus drainpipe is interval with multiple.

To be easy to discharge the ponding below inverted arch simultaneously, sump is laid with crossing water culvert bottom surface, under the sump End is extended to below inverted arch through inverted arch, and described to catchment bottom and side wall is equipped with spilled water hole, the spilled water hole is located at inverted arch Lower section, the spilled water hole outside are provided with filter layer, mono-directional drainage are provided with the sump.

Further, the sump communicates filtering captation, and the filtering captation is located at below inverted arch, described Filtering captation includes collecting conduit, and the collecting conduit sidewall spacers are provided with water inlet, and the downhole end of catchmenting puts in collection In waterpipe, the spilled water hole is filled with being connected inside collecting conduit between the collecting conduit inwall and sump outer wall First filter layer.

Preferably, there is the second filter layer between the spilled water hole and the first filter layer, second filter layer is fine sand mistake Filtering layer, first filter layer are coarse sand filter layer.Further, stainless steel is provided between the spilled water hole and the second filter layer Filter mesh layer.

It is further preferred that the filtering captation also includes foundation ditch, the collecting conduit is located in foundation ditch, the collection Waterpipe in the range of the foundation ditch beyond sump with being filled with cobble filter layer.

Wherein, the mono-directional drainage includes removable cover device and extension spring, and the removable cover device includes Cover plate, cover plate holding members and loose-leaf rotating shaft, the side of the cover plate are rotatablely connected by loose-leaf rotating shaft and sump, the lid Plate opposite side is pressed on cover plate holding members, and the cover plate holding members and sump are affixed, one end of the extension spring with Cover plate bottom is connected, and the other end of extension spring is connected with bottom of catchmenting, and the removable cover device is located above spilled water hole.

Preferably, the sump for crossing water culvert arranged on left and right sides is arranged symmetrically, in the sump adjacent with tunnel center line Extension spring stiffness coefficient be more than other sumps in extension spring stiffness coefficient.

Coherence check maintenance desilting work is carried out for ease of entering the water culvert of crossing at tunnel bottom, in railway roadbed bottom plate center along tunnel Longitudinally spaced to be provided with inspection shaft, the inspection shaft led to water culvert.

Wherein, in addition to arch wall, the arch wall include preliminary bracing, waterproof layer and the secondary lining set from outside to inside, It is interval with circle draining blind pipe between the preliminary bracing and waterproof layer, the both ends of the circle draining blind pipe connect vertical respectively To draining blind pipe, multiple delivery ports are interval with the tube wall of the longitudinal drainage blind pipe, the delivery port passes through transverse drainage Blind pipe communicated drainage lateral sulcus, the longitudinal drainage blind pipe were higher than water culvert.

The construction method of water rich strata tunnel bottom discharge structure, it is characterised in that：Comprise the following steps:

Step 1, reinforcing bar colligation is carried out to inverted arch, bearing pile and railway roadbed bottom plate；

Step 2, inverted arch progress formwork erection is poured, after its concrete curing shaping, formwork erection is carried out to bearing pile and poured；Hold Railway roadbed bottom plate progress formwork erection is poured after carrying stake curing molding.

Further, before the step 1, the foundation ditch of four prism type is dug out in tunnel inverted arch bottom first, at foundation ditch bottom The tube socket that catchments is placed in portion, and collecting conduit is arranged on and catchmented on tube socket；

Reinforcing bar is carried out in the step 1 to inverted arch, sump, bearing pile and railway roadbed bottom plate and inspection shaft first to tie up；Then In sump side wall and the pre-buried spilled water hole steel pipe in bottom；

The step 2 comprises the following steps：

2.1 pairs of inverted arch and sump carry out formwork erection and poured, after its concrete curing shaping, pre-buried spilled water hole steel pipe shape Into spilled water hole；

2.2 install spilled water hole termination filter in sluicing outer end of hole, are set successively inside the filter of spilled water hole termination Put stainless steel filtering net layer and fine sand filter layer；

2.3 apply coarse sand filter layer between collecting conduit inwall and sump outer wall；

2.4 apply cobble filter layer in the range of the foundation ditch beyond collecting conduit and sump；

2.5 install mono-directional drainage inside sump, and loose-leaf rotating shaft and cover plate holding members are fixedly mounted on into collection On well inwall, the loose-leaf rotating shaft is located at the opposite side of sump with cover plate holding members, and the position of loose-leaf rotating shaft is higher than lid The position of plate holding members and spilled water hole, the side of cover plate and loose-leaf rotating shaft is affixed, by one end of extension spring and cover plate bottom Portion connects, and the other end of extension spring connects bottom of catchmenting；

2.6 pairs of bearing piles carry out formwork erection and poured, and carrying out formwork erection to railway roadbed bottom plate after bearing pile curing molding pours.

Compared with prior art, the utility model has the advantages that：

The utility model changes inverted arch fill part of the prior art to be substituted by railway roadbed bottom plate and bearing pile, is ensureing tunnel On the basis of road structure safety, tunnel drainage system discharge section area is increased, improves tunnel drainage ability；By facing upward Encircle bottom and sump and filtering captation be set, while realize the discharge of the underground below water rich strata tunnel inverted arch, Tunnel bottom hydraulic pressure is reduced, is advantageous to prevent the appearance for the diseases such as tunnel inverted arch is swelled, railway roadbed is risen soil.In railway roadbed bottom plate center Along the longitudinally disposed inspection shaft in tunnel, it is easy to relevant staff to cross water culvert and carries out maintenance and inspection and desilting work.

Brief description of the drawings

Fig. 1 is the structural representation in tunnel drainage system cross section in the prior art；

Fig. 2 is the structural representation in the utility model cross section；

Fig. 3 is the structural representation of the utility model vertical section；

Fig. 4 is the front view for filtering captation；

Fig. 5 is the enlarged drawing at A in Fig. 4；

Fig. 6 is the side view for filtering captation；

Fig. 7 is the enlarged drawing at A in Fig. 6；

Fig. 8 is the drainage path schematic diagram in the main view direction for filtering captation；

Fig. 9 is the enlarged drawing at A in Fig. 8；

Figure 10 is the drainage path schematic diagram for the side-looking direction for filtering captation；

Figure 11 is the enlarged drawing at A in Figure 10；

The discharging mode schematic diagram of embodiment 2 when Figure 12 is the dry season；

The discharging mode schematic diagram of embodiment 2 when Figure 13 is rich water season；

The discharging mode schematic diagram of embodiment 2 when Figure 14 is Severe rainstorm season；

In figure：1- preliminary bracings, 2- circle drainings blind pipe, 3- waterproof layers, 4- secondary linings, 5- transverse drainages blind pipe, 6- Draining lateral sulcus, 7- centre drains, 8- longitudinal drainages blind pipe, 9- transverse drainages passage, 10- inspection shafts, 11- filter the dress that catchments Put, 12- lateral sulcus drainpipe, 13- railway roadbeds bottom plate, 14- cobbles filter layer, 15- collecting conduits, 16- water inlets, 17- first are filtered Layer, 18- spilled water holes, 19- catchment tube socket, 20- sumps, 21- removable covers device, 22- the first extension spring, 23- Two kinds of extension springs, 24- spilled water holes steel pipe, 25- spilled water holes termination filter, the filter layers of 26- second, 27- stainless steel filtering nets, 28- cover plates, 29- cover plates holding members, the rotating shaft of 30- loose-leaves, 31- bearing piles, 32- cross water culvert.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing, to this reality It is further elaborated with new.

Embodiment 1

As shown in Fig. 2 water rich strata tunnel bottom discharge structure disclosed in the utility model, including the row of inverted arch and tunnel both sides Water lateral sulcus 6, railway roadbed bottom plate 13 is set every sky above inverted arch, bearing pile 31, railway roadbed are laid between railway roadbed bottom plate 13 and inverted arch Tunnel bottom is formed between bottom plate 13 and inverted arch crosses water culvert 32, and draining lateral sulcus 6 connected water culvert by lateral sulcus drainpipe 12 32, lateral sulcus drainpipe 12 is interval with multiple.

Coherence check maintenance desilting work is carried out for ease of entering the water culvert 32 of crossing at tunnel bottom, on 13 central edge of railway roadbed bottom plate Tunnel is longitudinally spaced to be provided with inspection shaft 10, and inspection shaft 10 led to water culvert 32.In railway roadbed bottom plate center along longitudinally every, tunnel Inspection shaft 10 is set every 50m, relevant staff can enter tunnel bottom via inspection shaft 10 and cross the progress coherence check of water culvert 32 Repair desilting work.

The arch wall and prior art tunnel on the utility model inverted arch top are essentially identical, and arch wall includes what is set from outside to inside Preliminary bracing 1, waterproof layer 3 and secondary lining 4, are interval with circle draining blind pipe 2, ring between preliminary bracing 1 and waterproof layer 3 The both ends of draining blind pipe 2 connect longitudinal drainage blind pipe 8 respectively, and multiple delivery ports are interval with the tube wall of longitudinal drainage blind pipe 8, For delivery port by the communicated drainage lateral sulcus 6 of transverse drainage blind pipe 5, longitudinal drainage blind pipe 8 was higher than water culvert 32, and draining lateral sulcus 6 is vertical To insertion tunnel.

When the present embodiment carries out draining, the underground water above tunnel bottom inverted arch is penetrated into by preliminary bracing 1 to be buried Circle draining blind pipe 2 in secondary lining 4, then enter draining via longitudinal drainage blind pipe 8 and transverse drainage blind pipe 5 respectively Lateral sulcus 6, which part underground water is external along longitudinal direction discharge tunnel via draining lateral sulcus 6, when water amount increases in draining lateral sulcus 6 During certain index, then the row of water culvert 32 is crossed in part to underground water via lateral sulcus drainpipe 12 between railway roadbed bottom plate 13 and inverted arch It is external to go out tunnel.

The utility model cross-section of river is big, and displacement is big, and drainability is strong, can fast and effective discharge tunnel-liner behind Water, reduce destruction of the high hydraulic pressure to liner structure；And inspection shaft is provided with, it is easy to overhaul.

Embodiment 2

The present embodiment and the difference of embodiment 1 are：As shown in Figure 2,3, to be easy to discharge the ponding below inverted arch simultaneously, Sump 20 is laid with crossing the bottom surface of water culvert 32, the lower end of sump 20 is extended to below inverted arch through inverted arch, the bottom of sump 20 Portion and side wall are equipped with spilled water hole 18, and spilled water hole 18 is located at below inverted arch, and the outside of spilled water hole 18 is provided with filter layer, in sump 20 Provided with mono-directional drainage.

As shown in Figure 6,7, mono-directional drainage includes removable cover device 21 and extension spring, and removable cover device 21 wraps Cover plate 28, cover plate holding members 29 and loose-leaf rotating shaft 30 are included, the side of cover plate 28 is rotated by loose-leaf rotating shaft 30 and sump 20 Connection, the opposite side of cover plate 28 are pressed on cover plate holding members 29, and cover plate holding members 29 and sump 20 are affixed, extension spring One end is connected with the bottom of cover plate 28, and the other end of extension spring is connected with the bottom of sump 20, and removable cover device 21, which is located at, to be let out The top of water hole 18.

When tunnel bottom water pressure is smaller, ponding hydraulic pressure is less than the deadweight of removable cover 28 and the pulling force sum of extension spring When, removable cover 28 is brought into close contact in the presence of extension spring and cover plate deadweight weight with cover plate holding members 29, inverted arch Lower section ponding can not enter among water culvert 32 via sump 20；As illustrated in figs. 8-11, the product below tunnel bottom inverted arch Water hydraulic pressure be more than removable cover 28 deadweight and extension spring pulling force sum when, tunnel bottom ponding is just in the work of head pressure Removable cover 28 is promoted to be rotated around loose-leaf pivot structure 30 via sump 20 under, it is real among water culvert 32 is crossed Existing drain function, and then it is external smoothly to discharge tunnel.

The utility model can be by the stiffness coefficient K for the extension spring for adjusting installation, and then controls inverted arch bottom underground The critical hydraulic pressure of water discharge, the utility model installation include two kinds of different extension springs of stiffness coefficient, the first extension spring 22 stiffness coefficient is K1, and the first extension spring 23 and stiffness coefficient are K2, wherein K1<K2, specifically, with tunnel center line phase The stiffness coefficient of extension spring in adjacent sump 20 is K1, and the stiffness coefficient of the extension spring in remaining sump 20 is K2, K1 ＜ K2.Preferably, the sump 20 for crossing the arranged on left and right sides of water culvert 32 is arranged symmetrically on tunnel center line.

When the present embodiment carries out draining, the underground water above tunnel bottom inverted arch is penetrated into by preliminary bracing 1 to be buried Circle draining blind pipe 2 in secondary lining 4, then enter draining via longitudinal drainage blind pipe 8 and transverse drainage blind pipe 5 respectively Lateral sulcus 6, which part underground water is external along longitudinal direction discharge tunnel via draining lateral sulcus 6, when water amount increases in draining lateral sulcus 6 During certain index, then the row of water culvert 32 is crossed in part to underground water via lateral sulcus drainpipe 12 between railway roadbed bottom plate 13 and inverted arch It is external to go out tunnel.Below the water rich strata tunnel inverted arch ground water pressure increase to a certain extent, underground water by inverted arch below Sump 20 entered water culvert 32, and final discharge tunnel is external.

The generation for the water damage events such as the utility model can reduce inverted arch protuberance, railway roadbed deforms and rises soil；Can be according to water Pressure height is automatically opened or closed cover plate to control cross-section of river size, so as to prevent lateral sulcus water from pouring in down a chimney into tunnel bottom.

Embodiment 3

The present embodiment and the difference of embodiment 2 are：As illustrated in figs. 2-7, sump 20 communicates filtering captation 11, mistake Filter captation 11 is located at below inverted arch, and filtering captation 11 includes collecting conduit 15, and the sidewall spacers of collecting conduit 15 are provided with Water inlet 16, the lower end of sump 20 are put in collecting conduit 15, and spilled water hole 18 connects with the inside of collecting conduit 15.Wherein, sluice The filter layer in the outside of hole 18, including the second filter layer 26 and the first filter layer 17 set from inside to outside, preferably, the first mistake Filtering layer 17 is coarse sand filter layer, and the second filter layer 26 is fine sand filter layer, preferably, the filter layer 26 of spilled water hole 18 and second it Between be additionally provided with stainless steel filtering net layer 27.Specifically, as shown in Figure 4,5, in the outer end of spilled water hole 18 installation spilled water hole termination filtering dress 25 are put, stainless steel filtering net layer 27 and fine sand filter layer are set gradually inside spilled water hole termination filter 25, in collecting conduit The first filter layer 17 is filled between 15 inwalls and the outer wall of sump 20.

Filtering captation 11 also includes foundation ditch, the preferred four prism type of foundation ditch, the tube socket that catchments is provided with bottom of foundation ditch 19, collecting conduit 15 is arranged on and catchmented on tube socket 19, the axis of collecting conduit 15 is vertical with the axis of sump 20, catchments Pipeline 15 in the range of the foundation ditch beyond sump 20 with being filled with cobble filter layer 14.

Wherein, sump 20 and filtering captation 11 to apply step as follows：1. dug out in tunnel inverted arch bottom, such as Figure, the four prism type foundation ditch shown in 4-7, catchment tube socket 19 and collecting conduit 15 are placed in its bottom, the tube socket 19 that catchments is Prefabricated C20 concrete catchments tube socket, and collecting conduit 15 is C35 concrete collecting conduits, and collecting conduit 15 is monosymmetric It is provided with water inlet 16；2. scene finishes sump 20 and inverted arch assembling reinforcement, and is let out with the hole wall of sump 20 with embedded at bottom of hole Water hole steel pipe 24, common formwork erection pour, and shaping to be solidified then forms spilled water hole 18, and in the outside of spilled water hole 18 placement sluicing nose end Head filter 25, sets gradually stainless steel filtering net layer 27 and fine sand filter layer 26 inside it；3. the collection beyond sump 20 Coarse sand filter layer is applied in the internal range of waterpipe 15；4. applied in the range of the foundation ditch beyond collecting conduit 15 with sump 20 Make cobble filter layer；5. in the inside installation activity cover board arrangement 21 of sump 20 and extension spring, wherein removable cover device 21 It is made up of cover plate 28, cover plate holding members 29 and loose-leaf rotating shaft 30, extension spring can draw effect of the cover plate 28 in hydraulic pressure Under rotated around loose-leaf rotating shaft 30.

As illustrated in figs. 8-11, when underground water hydraulic pressure increases to certain index below tunnel bottom inverted arch in water rich strata, Underground water enters collector pipe by filtering the cobble filter layer of captation 11, then via the water inlet 16 of the both sides of collecting conduit 15 Inside road 15；Then by the coarse sand filter layer 17 inside collecting conduit 15, then the spilled water hole by the placement of the outside of spilled water hole 18 Fine sand filter layer 26 and stainless steel filtering net layer 27 in termination filter 25, are flowed into sump 20 by spilled water hole steel pipe 24 Portion.Below the tunnel bottom inverted arch ponding hydraulic pressure be more than removable cover 28 deadweight and extension spring pulling force sum when, tunnel Bottom ponding just promotes removable cover 28 to be rotated around loose-leaf pivot structure 30 in the presence of head pressure via sump 20, Among crossing water culvert 32 hence into tunnel bottom, drain function is realized, and then it is external smoothly to discharge tunnel.

As shown in figure 12, during the dry season, tunnel bottom water pressure is smaller, and ponding hydraulic pressure is less than the deadweight of removable cover 28 With the pulling force sum of extension spring, removable cover 28 i.e. extension spring and cover plate deadweight weight in the presence of with cover plate support structure Part 29 is brought into close contact, and ponding can not enter tunnel bottom via sump 20 and cross among water culvert 32 below inverted arch；Now, tunnel bottom Underground water above inverted arch penetrates into the circle draining blind pipe 2 being embedded in secondary lining 4 by preliminary bracing 1, then distinguishes Enter draining lateral sulcus 6 via longitudinal drainage blind pipe 8 and transverse drainage blind pipe 5, which part underground water is via draining lateral sulcus 6 along vertical External to discharge tunnel, part underground water then enters between railway roadbed bottom plate 13 and inverted arch via lateral sulcus drainpipe 12 crosses water culvert 32 discharge tunnels are external.

As shown in figure 13, during rich water season, hydraulic pressure is larger below tunnel bottom inverted arch, and ponding hydraulic pressure is more than removable cover 28 Deadweight and the pulling force sum of the first extension spring 22, but the deadweight less than removable cover 28 and second extension spring 23 During pulling force sum, ponding entered water culvert 32 by installing the sump 20 of the first extension spring 22 and arranged below inverted arch Water, while underground water carries out draining also by draining lateral sulcus 6 with crossing water culvert 32 above inverted arch.

As shown in figure 14, when tunnel stratum country rock is in Severe rainstorm season, tunnel bottom inverted arch lower section hydraulic pressure is drastically Increase, ponding hydraulic pressure be more than removable cover 28 deadweight and extension spring pulling force sum when, ponding is then by complete below inverted arch The sump 20 in portion entered water culvert 32 and carries out draining, while underground water is contained also by draining lateral sulcus 6 with crossing water above inverted arch It is external that tunnel is discharged in hole 32.

The construction method of water rich strata tunnel bottom discharge structure, comprises the following steps disclosed in the utility model:

Step 1, reinforcing bar colligation is carried out to inverted arch, inspection shaft 10, bearing pile 31 and railway roadbed bottom plate 13；

Step 2, inverted arch progress formwork erection is poured, after its concrete curing shaping, formwork erection is carried out to bearing pile 31 and poured； Formwork erection is carried out after the curing molding of bearing pile 31 to railway roadbed bottom plate 13 and inspection shaft 10 to pour.

For embodiment 2, inverted arch, sump 20, inspection shaft 10, bearing pile 31 and railway roadbed bottom plate 13 are carried out in step 1 Reinforcing bar colligation；

Formwork erection is carried out to inverted arch and sump 20 to pour, after its concrete curing shaping, bearing pile 31 is entered in step 2 Row formwork erection pours；Formwork erection is carried out after the curing molding of bearing pile 31 to railway roadbed bottom plate 13 and inspection shaft 10 to pour.

For embodiment 3, during tunnel bottom structure site operation, required sky is applied excavating out whole tunnel bottom structure Between after, reinforcing bar colligation and formwork erection are carried out to tunnel inverted arch, sump 20, bearing pile 31, railway roadbed bottom plate 13 and inspection shaft 10 and poured, Order is poured to be followed successively by：Inverted arch and sump 20 → bearing pile, 31 → railway roadbed bottom plate 13 and inspection shaft 10, i.e., it is complete in reinforcing bar colligation Bi Hou, formwork erection is carried out with sump 20 to inverted arch first and poured, after its concrete curing shaping, carries out the formwork erection of bearing pile 31 Work is poured, carrying out formwork erection to railway roadbed bottom plate 13 and inspection shaft 10 after the last curing molding of stake 31 to be lifted pours work, i.e., complete Into the working procedure of the utility model water rich strata tunnel bottom structure.It is specific as follows：

Before step 1, the foundation ditch of four prism type is dug out in tunnel inverted arch bottom first, collector pipe pipe is placed in bottom of foundation ditch Seat 19, collecting conduit 15 is arranged on and catchmented on tube socket 19；

Reinforcing bar is carried out in step 1 with railway roadbed bottom plate 13 and inspection shaft 10 to inverted arch, sump 20, bearing pile 31 first to tie up； Then in the side wall of sump 20 and the pre-buried spilled water hole steel pipe 24 in bottom；

Step 2 comprises the following steps：

2.1 pairs of inverted arch and sump 20 carry out formwork erection and poured, after its concrete curing shaping, pre-buried spilled water hole steel pipe 24 form spilled water hole 18；

2.2 install spilled water hole termination filter 25 in the outer end of spilled water hole 18, inside spilled water hole termination filter 25 Set gradually stainless steel filtering net layer 27 and fine sand filter layer；

2.3 apply coarse sand filter layer between the inwall of collecting conduit 15 and the outer wall of sump 20；

2.4 apply cobble filter layer in the range of the foundation ditch beyond collecting conduit 15 and sump 20；

2.5 install mono-directional drainage inside sump 20, and loose-leaf rotating shaft 30 and cover plate holding members 29 are fixed into peace On the inwall of sump 20, loose-leaf rotating shaft 30 is located at the opposite side of sump 20, loose-leaf rotating shaft 30 with cover plate holding members 29 Position higher than cover plate holding members 29 and spilled water hole 18 position, the side of cover plate 28 and loose-leaf rotating shaft 30 is affixed, will be by One end of spring is drawn to be connected with the bottom of cover plate 28, other end connection sump 20 bottom of extension spring；

2.6 pairs of bearing piles 31 carry out formwork erection and poured, and carrying out formwork erection to railway roadbed bottom plate 13 after the curing molding of bearing pile 31 pours.

For region of FuShui, especially under continuous rainfall or Severe rainstorm weather condition, the utility model has powerful Displacement deposit；Because the tunnel cross-section of river is big, tunnel-liner behind water fast and effective can be discharged, reduces high hydraulic pressure to lining cutting knot The destruction of structure；The sump extended to below inverted arch can exclude ponding below inverted arch, reduce inverted arch protuberance, railway roadbed deformation and frost boiling Emit the generation of the water damage event such as mud；Cover plate can be automatically opened or closed according to groundwater run off to control cross-section of river size simultaneously, So as to prevent lateral sulcus water from pouring in down a chimney into tunnel bottom；The utility model working procedure is easy, has stronger construction feasibility；Work Journey low cost, is easy to large-scale promotion.

Certainly, the utility model can also have other numerous embodiments, without departing substantially from the utility model spirit and its essence In the case of, those skilled in the art can make various corresponding changes and deformation, but these according to the utility model Corresponding change and deformation should all belong to the scope of the claims appended by the utility model.

Claims (10)

1. water rich strata tunnel bottom discharge structure, including inverted arch and the draining lateral sulcus (6) of tunnel both sides, it is characterised in that:In inverted arch Top sets railway roadbed bottom plate (13) every sky, and the railway roadbed bottom plate (13) is laid with bearing pile (31), the railway roadbed between inverted arch Bottom plate (13) forms the water culvert (32) excessively at tunnel bottom between inverted arch, and the draining lateral sulcus (6) is connected by lateral sulcus drainpipe (12) By water culvert (32), the lateral sulcus drainpipe (12) is interval with multiple.

2. water rich strata tunnel bottom discharge structure according to claim 1, it is characterised in that：It is described to cross water culvert (32) bottom surface Sump (20) is laid with, sump (20) lower end is extended to below inverted arch through inverted arch, sump (20) bottom Spilled water hole (18) is equipped with side wall, the spilled water hole (18) is located at below inverted arch, and filtering is provided with the outside of the spilled water hole (18) Layer, it is provided with mono-directional drainage in the sump (20).

3. water rich strata tunnel bottom discharge structure according to claim 2, it is characterised in that：The sump (20) mutually passes through Captation (11) is filtered, the filtering captation (11) is located at below inverted arch, and the filtering captation (11) includes catchmenting Pipeline (15), collecting conduit (15) sidewall spacers are provided with water inlet (16), and sump (20) lower end puts in collector pipe In road (15), the spilled water hole (18) inside collecting conduit (15) with connecting, collecting conduit (15) inwall and sump (20) the first filter layer (17) is filled between outer wall.

4. water rich strata tunnel bottom discharge structure according to claim 3, it is characterised in that：The spilled water hole (18) and first There is the second filter layer (26) between filter layer (17), second filter layer (26) is fine sand filter layer, first filter layer (17) it is coarse sand filter layer.

5. water rich strata tunnel bottom discharge structure according to claim 4, it is characterised in that：The spilled water hole (18) and second Stainless steel filtering net layer (27) is provided between filter layer (26).

6. the water rich strata tunnel bottom discharge structure according to claim 3,4 or 5, it is characterised in that：It is described to filter the dress that catchments Putting (11) also includes foundation ditch, and the collecting conduit (15) is located in foundation ditch, beyond the collecting conduit (15) and sump (20) Foundation ditch in the range of be filled with cobble filter layer (14).

7. water rich strata tunnel bottom discharge structure according to claim 2, it is characterised in that：The mono-directional drainage includes Removable cover device (21) and extension spring, the removable cover device (21) include cover plate (28), cover plate holding members (29) With loose-leaf rotating shaft (30), the side of the cover plate (28) is rotatablely connected by loose-leaf rotating shaft (30) and sump (20), the lid Plate (28) opposite side is pressed on cover plate holding members (29), and the cover plate holding members (29) and sump (20) are affixed, described One end of extension spring is connected with cover plate (28) bottom, and the other end of extension spring is connected with sump (20) bottom, the work Dynamic cover board arrangement (21) is located above spilled water hole (18).

8. water rich strata tunnel bottom discharge structure according to claim 7, it is characterised in that：The left side of water culvert (32) excessively, The sump (20) of right both sides is arranged symmetrically, and the stiffness coefficient of the extension spring in the sump adjacent with tunnel center line (20) is big The stiffness coefficient of extension spring in other sumps (20).

9. water rich strata tunnel bottom discharge structure according to claim 1 or 2, it is characterised in that：The railway roadbed bottom plate (13) Center is provided with inspection shaft (10) along tunnel is longitudinally spaced, and the inspection shaft (10) led to water culvert (32).

10. water rich strata tunnel bottom discharge structure according to claim 1 or 2, it is characterised in that：Also include arch wall, it is described Arch wall includes preliminary bracing (1), waterproof layer (3) and the secondary lining (4) set from outside to inside, and the preliminary bracing (1) is with preventing Circle draining blind pipe (2) is interval between water layer (3), the both ends of the circle draining blind pipe (2) connect longitudinal drainage respectively Blind pipe (8), multiple delivery ports is interval with the tube wall of the longitudinal drainage blind pipe (8), the delivery port passes through transverse drainage Blind pipe (5) communicated drainage lateral sulcus (6), the longitudinal drainage blind pipe (8) were higher than water culvert (32).