CN217999656U

CN217999656U - Complex hydrogeology of city tunnel prevents drainage device

Info

Publication number: CN217999656U
Application number: CN202222206965.9U
Authority: CN
Inventors: 陈俊; 付勉; 刘春雨; 风维佳; 胥浩
Original assignee: Third Construction Co Ltd of China Construction Eighth Engineering Divison Co Ltd
Current assignee: Third Construction Co Ltd of China Construction Eighth Engineering Divison Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2022-12-09
Anticipated expiration: 2032-08-22

Abstract

The utility model provides a complicated hydrogeology drainage preventer of urban tunnel, includes just a shotcrete layer, is located and has set gradually geotechnological cloth buffer layer, waterproof board on just a shotcrete layer and lays layer and lining concrete surface course, just a shotcrete in situ portion hoop reservation has the blind pipe slot, the blind pipe inslot all is provided with reverse osmosis hoop blind pipe, reverse osmosis hoop blind pipe's lower extreme has a vertical drain pipe through three-way pipe articulate, vertical drain pipe is through the horizontal drain pipe with vertical drain pipe intercommunication with the water drainage to the gutter in the tunnel, the utility model discloses can guarantee that the lining does not lead to blockking up by extrusion deformation reverse osmosis hoop blind pipe and reverse osmosis hoop blind pipe can be effective, organized, smooth and easy with in the drainage to the gutter when concrete placement.

Description

Water drainage device is prevented to city tunnel complex hydrogeology

Technical Field

The utility model relates to a waterproof construction field especially relates to a complicated hydrogeology of city tunnel prevents drainage device.

Background

With the continuous development of infrastructure construction in China, the scale, the number and the complexity of various underground tunnel projects are continuously increased, the underground hydrological environment is more complicated, and the anti-leakage condition in the tunnel is not optimistic at present. In the prior art, the waterproof plate is hung between the lining and the primary support for tunnel drainage prevention, the annular spring drainage blind pipe is hung behind the waterproof plate and the lining concrete, water is collected to the annular spring drainage blind pipe through the waterproof plate, the annular spring drainage blind pipe is collected to the side ditch through the ring, the annular spring drainage blind pipe is very easy to be flattened and extruded and deformed by the lining concrete in the process of pouring the lining concrete, the annular spring drainage blind pipe is prevented from draining water smoothly and blocking, and underground water cannot be drained to the side ditch normally to play an effective drainage role.

The unsmooth and obstructed drainage can cause excessive accumulated water at the back of the lining, the excessive local water pressure can cause cracking and water seepage of the lining, great influence is brought to driving safety and later-stage operation and maintenance cost, and the service life of the tunnel is greatly shortened. Therefore, the problem that complex hydrogeology water prevention and drainage of urban tunnels is to be solved urgently at present is solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art not enough, provide a complicated hydrogeology drainage preventer of urban tunnel, including just propping up injection concrete layer, be located and just prop up injection concrete layer and set gradually geotechnological cloth buffer layer, waterproof board and lay layer and lining concrete surface course, just prop up injection concrete in situ portion hoop and reserve and have the blind pipe slot, the blind pipe slot is interior all to be provided with reverse osmosis hoop blind pipe, reverse osmosis hoop blind pipe's lower extreme has vertical drain pipe through three-way pipe articulate, vertical drain pipe is through the horizontal drain pipe with vertical drain pipe intercommunication with the water drainage to the gutter in tunnel.

Preferably, the junction of the reverse osmosis annular blind pipe and the tee joint is wrapped by a waterproof adhesive tape, and the junction of the longitudinal drain pipe and the tee joint is sealed by an adhesive tape.

Preferably, the longitudinal drain pipe is made of phi 100HDPE double-arm perforated corrugated pipe, and a reverse osmosis membrane is wrapped outside the longitudinal drain pipe.

Preferably, the transverse drainage pipe is connected into the drainage side ditch by adopting a phi 100HDPE double-arm imperforate corrugated pipe, and is wrapped by geotextile.

Preferably, the number of the blind pipe grooves is several, and the distance between adjacent blind pipe grooves is 5m.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a it has the blind pipe slot to reserve in the concrete layer to prop up just, has laid reverse osmosis hoop blind pipe at the blind pipe ditch inslot, and the blind pipe slot can carry out fine protection to reverse osmosis hoop blind pipe for concrete in-process reverse osmosis hoop blind pipe is difficult to flatten and extrusion deformation by the concrete of lining concrete surface course pouring the concrete process of lining concrete surface course, and reverse osmosis hoop blind pipe can organize, smooth and easy log raft to the longitudinal drain pipe, horizontal drain pipe is until in the drainage gutter.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a transverse cross-sectional view of a tunnel;

FIG. 2 is a longitudinal elevational view of the tunnel;

FIG. 3 is a schematic illustration of a tee fitting.

In the figure: 1. blind pipe groove, 2, reverse osmosis circumferential blind pipe, 3, tee pipe joint, 4, longitudinal drain pipe, 5, horizontal drain pipe.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

Referring to fig. 1 to 3, a complex hydrogeological drainage preventing device for an urban tunnel comprises a primary injection concrete layer, a geotextile buffer layer, a waterproof board laying layer and a lining concrete surface layer are sequentially arranged on the primary injection concrete layer, a blind pipe groove 1 is reserved annularly in the primary injection concrete layer, the blind pipe groove 1 is reserved annularly with phi 110 PVC, before the initial setting of injection concrete, the phi 110 PVC is taken out to form an annularly reserved pressing groove, namely the blind pipe groove 1, reverse osmosis annularly blind pipes 2 are arranged in the blind pipe groove 1, before the hanging of the geotextile buffer layer and the waterproof board laying layer, a phi 75 compound reverse osmosis annularly blind pipe 2 is placed into the blind pipe groove 1 reserved on the injection concrete surface, the lower end of the reverse osmosis annularly blind pipe 2 is connected with a longitudinal drainage pipe 4 through a three-way pipe joint 3, the longitudinal drainage pipe 4 adopts a phi 100HDPE double-arm corrugated pipe, water in the tunnel can enter the longitudinal drainage pipe 4 through a hole, the reverse osmosis membrane covers the longitudinal drainage pipe 4 outside the longitudinal drainage pipe, the longitudinal drainage pipe 4 is connected with a HDPE double-arm corrugated pipe through a transverse corrugated pipe, and the transverse corrugated pipe 5 is connected with a drainage pipe for preventing water from leaking into the transverse tunnel, and the transverse drainage pipe for connecting the HDPE discharge pipe, and the transverse water drainage pipe.

The utility model discloses a it has blind pipe slot 1 to reserve at first injection concrete in situ, reverse osmosis hoop blind pipe 2 has been laid in blind pipe slot 1, blind pipe slot 1 can carry out fine protection to reverse osmosis hoop blind pipe 2, make reverse osmosis hoop blind pipe 2 difficult by the concrete flattening and the extrusion deformation of lining concrete surface course at the concrete in-process of pouring lining concrete surface course, make reverse osmosis hoop blind pipe 2 can organize, smooth and easy with water drainage to vertical drain pipe 4, horizontal drain pipe 5 is up to in the drainage side ditch, make the drainage smooth and easy, lining concrete surface course ponding behind one's back is a small amount, can not lead to the condition of lining cutting cracking because of lining concrete surface course water pressure is too big, to driving safety, later stage operation maintenance cost plays benign influence, impel tunnel life greatly increased.

In addition, reverse osmosis ring is to blind pipe 2 and three way connection's junction wrap up through waterproof tape and is handled, and longitudinal drain pipe 4 passes through the viscose with three way connection's 3 junction and seals, and these two kinds of technical scheme are all in order to prevent three way connection 3 and leak at the junction, and the effectual condition that prevents the infiltration takes place.

The utility model discloses in, the quantity of blind pipe slot 1 is a plurality of, and the distance between the adjacent blind pipe slot 1 is 5m, makes like this the utility model discloses a drainage effect is better, and drainage efficiency is faster.

As above, while the invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a complicated hydrogeology of urban tunnel prevents drainage device, includes just a injection concrete layer, is located to have set gradually geotechnological cloth buffer layer, waterproof board on just a injection concrete layer and lays layer and lining concrete surface course, its characterized in that: a blind pipe groove is reserved in the inner annular direction of the primary support injection concrete layer, reverse osmosis annular blind pipes are arranged in the blind pipe grooves, the lower ends of the reverse osmosis annular blind pipes are connected with a longitudinal drain pipe through a three-way pipe joint, and the longitudinal drain pipe drains water into a drain side ditch of the tunnel through a transverse drain pipe communicated with the longitudinal drain pipe.

2. The urban tunnel complex hydrogeological water-proof and drainage device according to claim 1, characterized in that: the junction of the reverse osmosis annular blind pipe and the tee joint is wrapped by a waterproof adhesive tape, and the junction of the longitudinal drain pipe and the tee joint is sealed by adhesive.

3. The urban tunnel complex hydrogeological water-proof and drainage device according to claim 1, wherein: the longitudinal drain pipe adopts a phi 100HDPE double-arm perforated corrugated pipe, and a reverse osmosis membrane is wrapped outside the longitudinal drain pipe.

4. The urban tunnel complex hydrogeological water-proof and drainage device according to claim 2, characterized in that: the transverse drainage pipe is connected into the drainage side ditch by adopting a phi 100HDPE double-arm imperforate corrugated pipe, and is wrapped by geotextile.

5. The urban tunnel complex hydrogeological water-proof and drainage device according to claim 1, characterized in that: the number of the blind pipe grooves is a plurality, and the distance between every two adjacent blind pipe grooves is 5m.