CN203835397U - Receiving structure used when shield tunneling machine reaches tunneling terminal - Google Patents
Receiving structure used when shield tunneling machine reaches tunneling terminal Download PDFInfo
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- CN203835397U CN203835397U CN201420224499.XU CN201420224499U CN203835397U CN 203835397 U CN203835397 U CN 203835397U CN 201420224499 U CN201420224499 U CN 201420224499U CN 203835397 U CN203835397 U CN 203835397U
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- China
- Prior art keywords
- received well
- receiving well
- header
- cup
- shield machine
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Abstract
The utility model discloses a receiving structure used when a shield tunneling machine reaches a tunneling terminal. The receiving structure used when the shield tunneling machine reaches the tunneling terminal comprises a receiving well, a receiving platform located in the receiving well, a receiving well wall and three diaphragm walls arranged in a weak stratum, wherein a front receiving well chamber is defined by the receiving well wall and the three diaphragm walls, a continuous vacuum water pumping device is arranged in the front receiving well chamber, a tunnel portal is arranged in the portion, between the front receiving well chamber and the receiving well, of the receiving well wall, and a sealing device is installed on the tunnel portal. According to the receiving structure used when the shield tunneling machine reaches the tunneling terminal, the front receiving well chamber and the continuous vacuum water pumping device are arranged in front of the tunnel portal of the receiving well, soil mass near the tunnel portal is separated from soil mass outside the front chamber, a channel through which underground water outside the front receiving well chamber seeps into the front receiving well chamber is blocked, underground water in the front receiving well chamber is pumped and discharged, in this way, the water level is made to be 3 m below the shield tunneling machine, the solidification function is achieved through the weak stratum in the front receiving well chamber when it rains, and the good condition is created for the shield tunneling machine to enter the receiving well.
Description
Technical field
The utility model relates to the reception structure that a kind of shield machine arrives driving terminal.
Background technology
In shield-tunneling construction, the reception that shield machine arrives driving terminal is the key link of shield construction, especially at soft stratum (as loose sandy soils, moisture soft clay stratum etc.).Because soil body self-stability and water proofing property in soft stratum are poor, when shield machine enters received well, gluing, sealing completely between shield structure housing and received well portal, form annular spaces, soft soil outside the portal borehole wall and underground water, by annular spaces, scurry in well, cause the front ground of portal to cave in, even cause tunnel deformation, muddy water to pour in the major accident in tunnel.So, must carry out near the soil body anti-seepage reinforcing pretreatment of received well portal.
At present, the method that near the soil stabilization of shield structure received well portal adopts both at home and abroad mainly contains agitation pile, rotary churning pile, chemical grouting, freezing etc.But agitation pile is because being limited by current technical level, be difficult to guarantee that agitation pile is definitely vertical, with the received well borehole wall can not good contact, and easily form bottom each agitation pile overlap joint discontinuous, cause jag, form leakage passage, meanwhile, mixing pile construction length is restricted; Rotary churning pile reinforcing method, chemical consolidation method, freezing reinforcing method, engineering quantity is larger, long in time limit, operating expenses is high.
Utility model content
The purpose of this utility model, is to provide a kind of shield machine to arrive the reception structure of driving terminal.
The solution that the utility model solves its technical problem is: a kind of shield machine arrives the reception structure of driving terminal, it comprises received well, is positioned at the receiving platform of received well, the received well borehole wall and be placed in soft stratum San road impervious wall, described received well borehole wall He San road impervious wall surrounds a received well cup, in described received well cup, be furnished with two rows and continue vacuum pumping device, the received well borehole wall between received well cup and received well is provided with portal, and described portal has been installed sealing device.
As the further improvement of technique scheme, described received well cup San road impervious wall becomes walling material can adopt hardened slurry, self-solidifying mortar, wet concrete, plain concrete, and impervious wall 28d compressive strength in the length of time is lower than 5MPa.
Further improvement as technique scheme, described lasting vacuum pumping device comprises header and the filter of header lower end is set, in described header, be provided with the gutter that an external diameter is less than header internal diameter, the upper end mouth of pipe of described header is provided with for sealing the nozzle device of header, the upper end mouth of pipe of described gutter connects this nozzle device, the lower end mouth of pipe of described gutter is connected with submersible pump, described nozzle device be provided with can by the vacuum hole vacuumizing in header and with the unidirectional hole of extraneous one-way conduction.
The beneficial effects of the utility model are: the utility model by arranging received well cup and lasting vacuum pumping device before the portal of received well, near soil body portal and the outer soil body of cup are separated, and block the passage of the outer Groundwater infiltration received well cup of received well cup, underground water in pump drainage received well cup again, make water level be down to following 3m at the bottom of shield machine, soft layer in the process of precipitation in received well cup reaches consolidation, for shield machine enters received well, creates good condition.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model, rather than whole embodiment, and those skilled in the art is not paying under the prerequisite of creative work, can also obtain other design schemes and accompanying drawing according to these accompanying drawings.
Fig. 1 is received well cup floor map;
Fig. 2 is that shield machine arrives at and receives into cup elevational schematic view;
Fig. 3 is received well portal sealing device schematic diagram;
Fig. 4 is that shield machine arrives at received well elevational schematic view;
Fig. 5 is the structural representation that continues vacuum pumping device.
The specific embodiment
Below with reference to embodiment and accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is clearly and completely described, to understand fully the purpose of this utility model, feature and effect.Obviously; described embodiment is a part of embodiment of the present utility model, rather than whole embodiment, based on embodiment of the present utility model; other embodiment that those skilled in the art obtains under the prerequisite of not paying creative work, all belong to the scope that the utility model is protected.In addition, all connection/annexations of mentioning in literary composition, not singly refer to that member directly joins, and refer to and can by adding or reducing, connect auxiliary according to concrete performance, form more excellent draw bail.
With reference to Fig. 1～Fig. 5, a kind of shield machine arrives the reception structure of driving terminal, it comprises received well, is positioned at the receiving platform 8 of received well, the received well borehole wall 2 and be placed in soft stratum 5 San road impervious walls 1, the described received well borehole wall 2 He San road impervious walls 1 surround a received well cup 3, in described received well cup 3, be furnished with and continue vacuum pumping device 4, the received well borehole wall 2 between received well cup 3 and received well is provided with portal 6, and described portal 6 has been installed sealing device.
By received well cup 3 and lasting vacuum pumping device 4 are set before the portal 6 at received well, near the outer soil body of the soil body and cup portal 6 is separated, and block the passage of the outer Groundwater infiltration received well of received well cup 3 cup 3, underground water in pump drainage received well cup 3 again, make water level be down to following 3m at the bottom of shield machine, soft layer 5 in the process of precipitation in received well cup 3 reaches consolidation, for shield machine enters received well, creates good condition.
Be further used as preferred embodiment, 1 one-tenth walling material of described received well cup 3 San road impervious walls can adopt hardened slurry, self-solidifying mortar, wet concrete, plain concrete, and impervious wall 28d compressive strength in the length of time is lower than 5MPa.
Be further used as preferred embodiment, described lasting vacuum pumping device comprises header 10 and the filter of header lower end is set, in header 10, put into again the gutter 30 that an external diameter is less than header 10 internal diameters, and at the lower end of gutter 30 mouth of pipe, one submersible pump 40 is installed, the fillter section tube wall of header 10 is provided with inlet opening 80, and there is the muscle 90 of putting more energy in tube wall outside to reinforce, in the muscle 90 outer wrap drainage geotextiles 70 of putting more energy into, prevent inlet opening 80 obstructions, nozzle device 20 is provided with sealing flange with the header 10 upper end mouths of pipe, sealing flange inside is provided with seal washer 60.The wall of nozzle device 20 be provided be connected with vacuum pump vacuumize hole 220 and with the unidirectional hole 210 of extraneous one-way conduction, the inner 230 in unidirectional hole 210 is connected with gutter 30, outer end 240 is connected with one way valve, guarantees the one-way conduction in gutter 30.With vacuum pump, by vacuumizing hole, header is vacuumized, make water in soft subgrade soil by the fillter section of header 10 lower ends, enter header 10 under pressure, use 4 pairs of water that enter in header 10 of submersible pump to extract, water is discharged to the external world by gutter 30 upper ends.Water level alarm device is installed on submersible pump 40, is controlled the duty of submersible pump, when water level reaches in warning line, prescribe a time limit, submersible pump 40 operates automatically, extracts water out header, when water level reaches under warning line, prescribes a time limit, and submersible pump 40 quits work automatically.
Adopt the shield machine that above-mentioned reception structure is carried out to arrive a method of reseptance that tunnels terminal, it comprises the following steps,
1) at portal 6 front ends of the received well three road impervious walls 1 of constructing, jointly form received well cup 3 with received well portal 6 boreholes wall, received well cup 3 internal layers and the outer field soil layer of received well cup 3 are separated;
2) in the interior layout of received well cup 3, continue vacuum pumping device 4 and draw water, the interior water level of received well cup 3 is down at the bottom of shield machine machine below, make the soil body discharging consolidation in received well cup 3;
3) shield machine construction arrives at received well cup 3, and normal construction is through the received well cup 3 fixed soil layer of precipitation;
4) shield machine arrives at the received well borehole wall 2, stops driving, shield machine shield body cutterhead is withstood on to portal 6 positions of the received well borehole wall 2, by mud in screw machine emptying native cabin dregs or the emptying mud of mud tube storehouse;
5) in received well, carry out portal 6 and abolish, and at portal 6 mounting sealing devices 7;
6) portal 6 is abolished and is installed after sealing device 7, and shield machine is pushed to received well, completes shield structure and receives.
Be further used as preferred embodiment, in step 2) in, in step 2) in, the interior employing of received well cup 3 continues vacuum pumping device 4 draws water, and makes soil body discharging consolidation in cup, and water level is down at the bottom of shield machine machine following 3 meters.
Be further used as preferred embodiment, before step 3), shield machine normal construction is through in the rear arrival received well of impervious wall 1 cup 3.
Referring to figs. 1 through Fig. 4, a preferred embodiment of the present utility model is as follows:
1,, after the received well of shield machine has been constructed, at received well hole front end construct three road impervious walls 1 and the common received well cup 3 that forms of the received well borehole wall 2, the soil layer that received well cup 3 is inside and outside is separated, and the outer water infiltration of blocking-up received well cup 3;
2, interior setting of received well cup 3, continue vacuum pumping device 4 and draw water, the interior water level of received well cup 3 is down to following 3m at the bottom of shield machine machine, make the interior soil body discharging consolidation of received well cup 3, the self-stability of raising received well cup 3 interior soft layers 5;
3, shield machine construction arrives at received well cup 3, and normal construction is through the soft layer 5 of the fixed strengthening of precipitation in received well cup 3 impervious walls 1 and received well cup 3;
4, shield machine arrives at the received well borehole wall 2, stops driving, cutter head of shield machine is withstood on and receives borehole wall portal 6 positions, by mud in screw machine emptying native cabin dregs or the emptying mud of mud tube storehouse;
5, in received well, carry out portal 6 concrete and abolish, and at hole 6 surrounding mounting sealing devices 7, the slip casting when preventing that shield machine from recovering driving behind section of jurisdiction is run off;
6, portal 6 concrete are abolished and are installed after sealing device 7, shield machine are pushed to the receiving platform 8 of received well, complete shield structure and receive.
More than that better embodiment of the present utility model is illustrated, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to the utility model spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (3)
1. a shield machine arrives the reception structure of tunneling terminal, it is characterized in that: it comprises received well, is positioned at the receiving platform of received well, the received well borehole wall and be placed in soft stratum San road impervious wall, described received well borehole wall He San road impervious wall surrounds a received well cup, in described received well cup, be furnished with lasting vacuum pumping device, the received well borehole wall between received well cup and received well is provided with portal, and described portal has been installed sealing device.
2. shield machine according to claim 1 arrives the reception structure of driving terminal, it is characterized in that: described received well cup San road impervious wall becomes walling material can adopt hardened slurry, self-solidifying mortar, wet concrete, plain concrete, and impervious wall 28d compressive strength in the length of time is lower than 5MPa.
3. shield machine according to claim 2 arrives the reception structure of driving terminal, it is characterized in that: described lasting vacuum pumping device comprises header and the filter of header lower end is set, in described header, be provided with the gutter that an external diameter is less than header internal diameter, the upper end mouth of pipe of described header is provided with for sealing the nozzle device of header, the upper end mouth of pipe of described gutter connects this nozzle device, the lower end mouth of pipe of described gutter is connected with submersible pump, described nozzle device be provided with can by the vacuum hole vacuumizing in header and with the unidirectional hole of extraneous one-way conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420224499.XU CN203835397U (en) | 2014-05-04 | 2014-05-04 | Receiving structure used when shield tunneling machine reaches tunneling terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420224499.XU CN203835397U (en) | 2014-05-04 | 2014-05-04 | Receiving structure used when shield tunneling machine reaches tunneling terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835397U true CN203835397U (en) | 2014-09-17 |
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ID=51513253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420224499.XU Expired - Fee Related CN203835397U (en) | 2014-05-04 | 2014-05-04 | Receiving structure used when shield tunneling machine reaches tunneling terminal |
Country Status (1)
| Country | Link |
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| CN (1) | CN203835397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018842A (en) * | 2014-05-04 | 2014-09-03 | 广东水电二局股份有限公司 | Receiving structure and receiving method used when shield tunneling machine reaches tunneling end point |
| CN110374620A (en) * | 2019-08-25 | 2019-10-25 | 贵州大学 | The exploitation of mining heading equipment is crushed header structure |
-
2014
- 2014-05-04 CN CN201420224499.XU patent/CN203835397U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018842A (en) * | 2014-05-04 | 2014-09-03 | 广东水电二局股份有限公司 | Receiving structure and receiving method used when shield tunneling machine reaches tunneling end point |
| CN104018842B (en) * | 2014-05-04 | 2016-11-02 | 广东水电二局股份有限公司 | A kind of shield machine arrives reception structure and the method for reseptance thereof of driving terminal |
| CN110374620A (en) * | 2019-08-25 | 2019-10-25 | 贵州大学 | The exploitation of mining heading equipment is crushed header structure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20200504 |
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| CF01 | Termination of patent right due to non-payment of annual fee |