Device and method for collecting gushing and leaking water on tunnel surrounding rock surface

Abstract

The invention provides a tunnel surrounding rock surface gushing and leaking water collecting device and method.The tunnel surrounding rock surface gushing and leaking water collecting method comprises the following steps that S1, loose rock blocks on a tunnel surrounding rock surface are cleaned; s2, assembling a leakage water collecting bin on the surrounding rock surface of the tunnel, and then mounting and fixing; s3, a drainage pipe is installed between the leakage water collecting bin and a drainage ditch on the ground; and S4, a tunnel primary support steel frame is constructed, concrete is sprayed, and tunnel primary support construction is completed. The stability and safety of the tunnel engineering surrounding rock supporting structure are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a device and method for collecting water leakage from the surrounding rock surface of a tunnel. Background Art

[0002] After the tunnel project is excavated, initial support must be carried out in a timely manner to support the surrounding rock and ensure its stability and safety. Generally, the initial support adopts a steel frame and shotcrete structure. The shotcrete is bonded to the surrounding rock base as a whole under the action of high-pressure spraying force.

[0003] Under dry and water-free conditions, shotcrete and surrounding rock can quickly bond to form a stable supporting structure layer. However, when there is water leakage on the surface of the tunnel excavation surrounding rock, especially when the water seepage is large in the form of strands or sheets, it is difficult for shotcrete to adhere firmly to the wet and water-containing rock surface.

[0004] After the shotcrete construction is completed, quality problems such as concrete falling off and cracking often occur, affecting the stability and safety of the surrounding rock support structure of the tunnel project. Summary of the invention

[0005] The embodiment of the present invention provides a device and method for collecting water leakage from the surrounding rock surface of a tunnel, aiming to solve the technical problem of low stability and safety of the surrounding rock support structure of a tunnel engineering.

[0006] In a first aspect, an embodiment of the present invention provides a method for collecting water leakage from a tunnel surrounding rock surface, the steps of which are as follows: S1. Clear the loose rocks on the tunnel surrounding rock surface; S2. After assembling the seepage water collection chamber on the tunnel surrounding rock surface, install and fix it; S3. Install a drainage pipe between the leakage water collection bin and the drainage ditch on the ground; S4. Construct the initial tunnel support steel frame and spray concrete to complete the initial tunnel support construction.

[0007] In combination with the first aspect, in a possible implementation manner, the S2 specifically includes: S21, assembling and installing a plurality of chambers on the tunnel surrounding rock surface along the tunnel extension direction, wherein the adjacent chambers are detachably connected, and the plurality of chambers form a collection group; S22, multiple rows of the collection groups are arranged along the inner contour line of the tunnel, the adjacent collection groups are detachably connected, at least one corresponding chamber in the adjacent collection groups is connected, and multiple rows of collection groups form the leakage water collection chamber; Wherein, the drainage pipe is connected to at least one of the chambers in the collection group in the last row.

[0008] In combination with the first aspect, in a possible implementation manner, the cross-sectional shape of the chamber is a polygon with its corners facing downward.

[0009] Compared with the prior art, the tunnel surrounding rock surface water leakage collection method provided by the present invention has the following advantages: The single support method of relying on shotcrete to plug leaks under the condition of surrounding rock leakage after tunnel excavation has been changed. The seepage water on the surrounding rock surface is collected by the tunnel surrounding rock surface leakage collection device and discharged into the drainage ditch. After the leakage water is drained, the initial support concrete layer is constructed. The initial support concrete layer is reliably bonded to the surface of the tunnel surrounding rock surface leakage collection device, ensuring the safety and stability of the surrounding rock and the initial support structure layer, effectively avoiding the influence of the surrounding rock surface leakage after tunnel excavation on the shotcrete initial support layer, and improving the stability and safety of the surrounding rock support structure of the tunnel project.

[0010] In a second aspect, an embodiment of the present invention further provides a tunnel surrounding rock surface water leakage collection device, comprising: The leakage water collection chamber comprises a plurality of chambers arranged in a row and arranged in a plurality of rows along the inner contour line of the tunnel, the chambers in two adjacent rows and corresponding to each other are connected, the chambers are fixed to the tunnel surrounding rock surface, two adjacent chambers are fitted and detachably connected, and each chamber is used to fit and be installed on the tunnel surrounding rock surface, and the side wall of each chamber is provided with a water inlet, and the water inlet faces the tunnel surrounding rock surface; A drainage unit, comprising a plurality of drainage pipes connected to at least one of the water inlets in the last row of the chambers and a drainage ditch arranged on the ground; The water gushing out from the surrounding rock surface of the tunnel passes through the water inlet of each row of the chambers in turn, and finally flows into the drainage ditch.

[0011] In combination with the second aspect, in a possible implementation, the chamber includes a bottom plate and a plurality of side plates arranged around the bottom plate, the plurality of side plates and the bottom plate enclose the water inlet, the side plate is fixedly connected to the bottom plate, a side of the side plate away from the bottom plate is in contact with the surrounding rock surface of the tunnel, and the two side plates located between two adjacent chambers are in contact with each other; The side panels are provided with a plurality of storage cavities, the storage cavities are opened in a direction perpendicular to the side panels, the storage cavities on the two side panels that are in contact with each other are aligned one by one, a connection block is slidably connected in the storage cavity, a container is provided on one side of the connection block facing the port of the storage cavity, and an adhesive is contained in the container; A power unit is provided in the storage cavity, and the power unit is used to push the connection block so that the adhesive flows out to bond two adjacent connection blocks.

[0012] In combination with the second aspect, in a possible implementation, a plurality of parent-child locking buckles are arranged between the two fitted side panels, and the parent-child locking buckles have a child buckle and a mother buckle. The child buckle is fixed to one of the side panels, and the mother buckle is fixed to the corresponding other side panel.

[0013] In combination with the second aspect, in a possible implementation, it is characterized in that the inner wall of the side panel is provided with a guide surface, the guide surface is inclined from the outer side of the chamber outside to the inner side of the chamber inside toward the direction close to the bottom plate, and the top of the guide surface extends to the outer wall of the side panel.

[0014] In combination with the second aspect, in a possible implementation manner, a support rib is fixedly provided between two opposite side plates in the same compartment; or A plurality of support columns are fixedly arranged on the bottom plate, and the support columns extend along the bottom plate toward and abut against the tunnel surrounding rock surface.

[0015] In combination with the second aspect, in a possible implementation manner, the support ribs are cross-arranged and integrally formed, and drainage grooves are provided at the intersections of the support ribs.

[0016] In combination with the second aspect, in a possible implementation manner, a suction cup is fixedly provided at an end of the support column away from the bottom plate, and the suction cup is adsorbed and fixed to the surrounding rock surface of the tunnel.

[0017] Compared with the prior art, the tunnel surrounding rock surface water leakage collection device provided by the present invention has the following advantages: The seepage water from the surrounding rock surface is collected in a seepage water collection bin and introduced into the drainage ditch through a drainage pipe, thereby draining the seepage water from the surrounding rock surface into the drainage ditch in an organized manner; the area of ​​the water inlet can be adjusted according to the seepage area of ​​the surrounding rock surface, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A construction flow chart of a method for collecting water leakage from surrounding rock surface of a tunnel according to an embodiment of the present invention; Figure 2 A structural schematic diagram showing the installation position of the leakage water collection bin provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a leakage water collection bin provided in an embodiment of the present invention; Figure 4 An exploded diagram showing a chamber assembly method is provided for an embodiment of the present invention; Figure 5 A structural schematic diagram of a container extrusion crushing method provided in an embodiment of the present invention; Figure 6 A cross-sectional view showing an independent region is provided for an embodiment of the present invention; Figure 7A schematic diagram of another container crushing method provided in an embodiment of the present invention Figure 8 A structural schematic diagram of another bin assembly method provided for an embodiment of the present invention; Fig. 9 for Figure 8 A partial enlarged schematic diagram of part A; Fig.10 A schematic diagram of the structure of the support ribs and the drainage grooves provided in the embodiment of the present invention; Fig.11 Provided for the embodiment of the present invention is a schematic structural diagram of a support column, a suction cup and a fixing bolt.

[0019] Description of reference numerals: 10. Leakage water collection bin; 101. Bin; 1011. Bottom plate; 1012. Side plate; 10121. Storage cavity; 10122. Connection block; 10123. Guide surface; 1013. Water inlet; 20. drainage unit; 201. drainage pipe; 202. drainage ditch; 30. container; 301. independent area; 40. Power unit; 401. First airbag; 402. Inflatable part; 403. Telescopic member; 50. Positioning unit; 501. Magnetic block; 60, parent-child lock buckle; 601, child buckle; 602, parent buckle; 70, support rib; 701, drainage trough; 80, support column; 801, suction cup; 90. Fixing bolts; 100. Tunnel surrounding rock surface. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] See also Figure 1 and Figure 2 , the present invention describes a method for collecting water leakage on the tunnel surrounding rock surface. A method for collecting water leakage on the tunnel surrounding rock surface, the steps are as follows: S1, cleaning loose rocks on the tunnel surrounding rock surface 100; S2, assembling and fixing the leakage water collection chamber 10 on the tunnel surrounding rock surface 100; S3, installing a drainage pipe 201 between the leakage water collection chamber 10 and the drainage ditch 202 on the ground; S4, constructing the initial support steel frame of the tunnel and spraying concrete to complete the initial support construction of the tunnel.

[0022] Compared with the prior art, the tunnel surrounding rock surface water leakage collection method provided in this embodiment has the following advantages: The single support method of relying on shotcrete to plug leaks under the condition of surrounding rock leakage after tunnel excavation is changed. The surrounding rock surface leakage water is collected by the tunnel surrounding rock surface leakage collection device and discharged into the drainage ditch 202 in a centralized manner. After the leakage water is drained, the initial support concrete layer is constructed. The initial support concrete layer is reliably bonded to the surface of the tunnel surrounding rock surface leakage collection device, ensuring the safety and stability of the surrounding rock and the initial support structure layer, effectively avoiding the influence of surrounding rock surface leakage after tunnel excavation on the shotcrete initial support layer, and improving the stability and safety of the surrounding rock support structure of the tunnel project.

[0023] In some embodiments, see Figure 2 and Figure 3 S2 specifically includes: S21, assembling and installing multiple chambers 101 on the tunnel surrounding rock surface 100 along the extension direction of the tunnel, adjacent chambers 101 are detachably connected, and multiple chambers 101 form a collection group; S22, multiple rows of collection groups are arranged along the inner contour line of the tunnel, adjacent collection groups are detachably connected, at least one corresponding chamber 101 in the adjacent collection groups is connected, and multiple rows of collection groups form a leakage water collection chamber 10.

[0024] The drainage pipe 201 is connected to at least one chamber 101 in the last row of the collection groups.

[0025] In some embodiments, the cross-sectional shape of the chamber 101 is a polygon with its corners facing downward.

[0026] Based on the same inventive concept, see also 2 to Fig.11 The embodiment of the present application also provides a device for collecting water leakage on the surrounding rock surface of a tunnel, including a leakage water collection chamber 10 and a drainage unit 20. The leakage water collection chamber 10 includes a plurality of chambers 101 arranged in a row and arranged in a plurality of rows along the inner contour line of the tunnel. The chambers 101 located in two adjacent rows and corresponding to each other are connected, and the chambers 101 are fixed to the surrounding rock surface 100 of the tunnel; the drainage unit 20 includes a plurality of drainage pipes 201 connected to at least one water inlet 1013 in the last row of chambers and a drainage ditch 202 arranged on the ground.

[0027] The water gushing out from the tunnel surrounding rock surface 100 passes through the water inlet 1013 of each row of chambers in turn, and finally flows into the drainage ditch 202 .

[0028] Specifically, the chamber 101 located in the last row is provided with a drainage hole, and a circular tubular component is provided at the drainage hole. An external thread is provided on the outside of the component to facilitate the connection of the drainage pipe 201; the drainage pipe 201 adopts a telescopic hose, and the drainage pipe 201 is connected to the component by a socket connection.

[0029] Compared with the prior art, the tunnel surrounding rock surface water leakage collection device provided in this embodiment has the following advantages: The seepage water from the surrounding rock surface is collected by the seepage water collection chamber 10 and introduced into the drainage ditch 202 through the drainage pipe 201, thereby draining the seepage water from the surrounding rock surface into the drainage ditch 202 in an organized manner; the area of ​​the water inlet 1013 can be adjusted according to the seepage water area of ​​the surrounding rock surface, and has a wide range of applications.

[0030] In some embodiments, see Figures 4 to 6 The chamber 101 includes a bottom plate 1011 and a plurality of side plates 1012 arranged around the bottom plate 1011. The plurality of side plates 1012 and the bottom plate 1011 enclose a water inlet 1013. The side plates 1012 are fixedly connected to the bottom plate 1011. The side of the side plates 1012 away from the bottom plate 1011 is in contact with the tunnel surrounding rock surface 100. The two side plates 1012 located between two adjacent chambers 101 are in contact with each other. The side plates 1012 are provided with a plurality of storage cavities 10121. The storage cavities 10121 are arranged along a direction perpendicular to The side panels 1012 are opened in the direction of each other, and the storage chambers 10121 on the two side panels 1012 that are in contact with each other are aligned one by one. A connecting block 10122 is slidably connected in the storage chamber 10121. A container 30 is provided on the side of the connecting block 10122 facing the end of the storage chamber 10121, and an adhesive is contained in the container 30. A power unit 40 is provided in the storage chamber 10121, and the power unit 40 is used to push the connecting block 10122 so that the adhesive flows out to bond two adjacent connecting blocks 10122.

[0031] Specifically, the container 30 is a second airbag having two independent areas 301, and the second airbag is fixedly connected to the connecting block 10122. The adhesive includes agent A and agent B, and agent A and agent B are respectively arranged in the two independent areas 301. Agent A and agent B generate viscosity after mixing. Agent A can be epoxy resin and agent B can be a curing agent.

[0032] Specifically, each chamber 101 includes a bottom plate 1011 and six side plates 1012. The six side plates 1012 form a hexagon, and the leakage water collection chamber 10 is honeycomb-shaped; the bottom plate 1011 and the side plates 1012 are both made of flexible materials, and the bottom plate 1011 and the side plates 1012 can be rubber materials. The bottom plate 1011 and the side plates 1012 are flexible, which improves the fit between the chamber 101 and the tunnel surrounding rock surface 100.

[0033] The power unit 40 pushes the connecting block 10122 to move toward the port of the storage chamber 10121 until the aligned second airbags are in contact. The connecting block 10122 then continues to move toward the port of the storage chamber 10121. At this time, the two second airbags in the middle are squeezed and ruptured by the two connecting blocks 10122, so that the A agent and the B agent in the two independent areas 301 are mixed, thereby bonding the two connecting blocks 10122 together, thereby fitting and fixing the two side panels 1012.

[0034] In some embodiments, see Figure 5 The power unit 40 is arranged on the side of the connecting block 10122 away from the end of the storage chamber 10121. The power unit 40 includes a first airbag 401 and an inflation part 402. The first airbag 401 and the inflation part 402 are connected.

[0035] Specifically, the inflation portion 402 may be an inflation pump.

[0036] The inflation part 402 is started to fill the gas into the first airbag 401 , and the gas entering the first airbag 401 makes the first airbag 401 expand. The expanded first airbag 401 squeezes the connecting block 10122 so that the connecting block 10122 moves toward the end of the storage cavity 10121 .

[0037] In some embodiments, see Figure 7 The power unit 40 is arranged on the side of the connecting block 10122 away from the end of the storage chamber 10121. The power unit 40 can be a telescopic member 403. The telescopic member 403 is fixed between the inner wall of the storage chamber 10121 and the connecting block 10122. The length of the telescopic member 403 is retractable along the moving direction of the connecting block 10122; the telescopic member 403 is started and extended to drive the connecting block 10122 to move toward the end of the storage chamber 10121.

[0038] Specifically, the telescopic member 403 may be a telescopic oil cylinder, an electric cylinder, or a hydraulic cylinder.

[0039] In some embodiments, see Figure 4 A plurality of positioning units 50 are provided between the two side panels 1012 that are in contact with each other. The positioning units 50 are arranged at intervals around the edge of the side panels 1012 . The positioning units 50 include two mutually attractive magnetic blocks 501 . The two magnetic blocks 501 are respectively fixed in the two side panels 1012 that are in contact with each other.

[0040] Specifically, the outer wall of the side plate 1012 is provided with a groove for accommodating the magnetic block 501 , and the outer wall of the magnetic block 501 is flush with the outer wall of the side plate 1012 .

[0041] The two corresponding magnetic blocks 501 attract each other, thereby preliminarily fixing the two fitted side panels 1012, so that when the power unit 40 squeezes the container 30 through the connecting block 10122, the two fitted side panels 1012 will not move, thereby facilitating fixing the two fitted side panels 1012 together.

[0042] In some embodiments, see Figure 8 and Fig. 9A plurality of parent-child lock buckles 60 are arranged between the two fitting side panels 1012. Specifically, the parent-child lock buckle 60 is arranged on the end surface of the side panel 1012 close to one end of the bottom plate 1011. The parent-child lock buckle 60 has a child buckle 601 and a mother buckle 602. The child buckle 601 is fixed to one of the side panels 1012, and the mother buckle 602 is fixed to the corresponding other side panel 1012.

[0043] In some embodiments, see Figure 4 A guide surface 10123 is provided on the inner wall of the side plate 1012 . The guide surface 10123 is inclined from the outer side of the chamber 101 to the inner side of the chamber 101 toward the direction close to the bottom plate 1011 . The top of the guide surface 10123 extends to the outer wall of the side plate 1012 .

[0044] The water inlet 1013 of each chamber 101 is enlarged by providing the guide surface 10123 , thereby preventing leaked water from entering the water inlet 1013 due to the thickness of the side plate 1012 .

[0045] In some embodiments, see Fig.10 A support rib 70 is fixedly disposed between two opposite side plates 1012 in the same chamber 101 ; specifically, the support ribs 70 are cross-arranged and integrally formed, and a drainage groove 701 is disposed at the intersection of the support ribs 70 .

[0046] The obstruction of the support intersection to the leakage water is reduced, so that the water in the chamber 101 can be collected at the lowest end of the water inlet 1013 and drained to the next row of adjacent water inlets 1013 until it is drained into the internal drainage ditch 202 through the drainage pipe 201.

[0047] In some embodiments, see Fig.11 A plurality of support columns 80 are fixedly disposed on the bottom plate 1011 , and the support columns 80 extend along the bottom plate 1011 toward and abut against the tunnel surrounding rock surface 100 .

[0048] Specifically, a suction cup 801 is fixedly provided at the end of the support column 80 located at the corner of the chamber 101 away from the bottom plate 1011 . The suction cup 801 is a concave rubber cup component, and the suction cup 801 is fixed by adsorption to the tunnel surrounding rock surface 100 .

[0049] When the seepage water collection chamber 10 is installed on the tunnel surrounding rock surface 100, the suction cup 801 can be well adhered to the tunnel surrounding rock surface 100, and the suction cup 801 can be adsorbed on the tunnel surrounding rock surface 100 under pressure.

[0050] In some embodiments, see Fig.11 The bottom plate 1011 is penetrated by fixing bolts 90 , and the fixing bolts 90 penetrate into the tunnel surrounding rock surface 100 , so as to fix the leakage water collection chamber 10 on the tunnel surrounding rock surface 100 .

[0051] In some embodiments, a rough surface or a connecting column structure bonded to the initial support shotcrete is provided on the side of the bottom plate 1011 facing away from the tunnel surrounding rock surface 100, so as to enhance the adhesion between the shotcrete and the bottom plate 1011, thereby improving the strength of the initial support.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for collecting water leakage from the surrounding rock surface of a tunnel, characterized in that: Here are the steps: S1. Clear the loose rocks on the tunnel surrounding rock surface; S2. After assembling the seepage water collection chamber on the tunnel surrounding rock surface, install and fix it; S3. Install a drainage pipe between the leakage water collection bin and the drainage ditch on the ground; S4. Construct the initial tunnel support steel frame and spray concrete to complete the initial tunnel support construction.

2. A method for collecting water leakage from the surrounding rock surface of a tunnel as claimed in claim 1, characterized in that: The S2 specifically includes: S21, assembling and installing a plurality of chambers on the tunnel surrounding rock surface along the tunnel extension direction, wherein the adjacent chambers are detachably connected, and the plurality of chambers form a collection group; S22, multiple rows of the collection groups are arranged along the inner contour line of the tunnel, the adjacent collection groups are detachably connected, at least one corresponding chamber in the adjacent collection groups is connected, and multiple rows of collection groups form the leakage water collection chamber; Wherein, the drainage pipe is connected to at least one of the chambers in the collection group in the last row.

3. A method for collecting water leakage from the surrounding rock surface of a tunnel as claimed in claim 2, characterized in that: The cross-section of the chamber is a polygon with its corners facing downwards.

4. A tunnel surrounding rock surface water leakage collection device, applicable to a tunnel surrounding rock surface water leakage collection method as claimed in any one of claims 1 to 3, characterized in that: include: The leakage water collection chamber comprises a plurality of chambers arranged in a row and arranged in a plurality of rows along the inner contour line of the tunnel, the chambers in two adjacent rows and corresponding to each other are connected, the chambers are fixed to the tunnel surrounding rock surface, two adjacent chambers are fitted and detachably connected, and each chamber is used to fit and be installed on the tunnel surrounding rock surface, and the side wall of each chamber is provided with a water inlet, and the water inlet faces the tunnel surrounding rock surface; A drainage unit, comprising a plurality of drainage pipes connected to at least one of the water inlets in the last row of the chambers and a drainage ditch arranged on the ground; The water gushing out from the surrounding rock surface of the tunnel passes through the water inlet of each row of the chambers in turn, and finally flows into the drainage ditch.

5. The tunnel surrounding rock surface water leakage collection device according to claim 4, characterized in that: The chamber comprises a bottom plate and a plurality of side plates arranged around the bottom plate, the plurality of side plates and the bottom plate enclose the water inlet, the side plates are fixedly connected to the bottom plate, a side of the side plates away from the bottom plate is in contact with the tunnel surrounding rock surface, and the two side plates located between two adjacent chambers are in contact with each other; The side panels are provided with a plurality of storage cavities, the storage cavities are opened in a direction perpendicular to the side panels, the storage cavities on the two side panels that are in contact with each other are aligned one by one, a connection block is slidably connected in the storage cavity, a container is provided on one side of the connection block facing the port of the storage cavity, and an adhesive is contained in the container; A power unit is provided in the storage cavity, and the power unit is used to push the connection block so that the adhesive flows out to bond two adjacent connection blocks.

6. The tunnel surrounding rock surface water leakage collection device according to claim 4, characterized in that: A plurality of parent-child lock buckles are arranged between the two fitted side panels, wherein the parent-child lock buckles have a child buckle and a mother buckle, wherein the child buckle is fixed to one of the side panels, and the mother buckle is fixed to the corresponding other side panel.

7. The tunnel surrounding rock surface water leakage collection device according to any one of claims 5 or 6, characterized in that: The inner wall of the side plate is provided with a guide surface, the guide surface is inclined from the outer side of the chamber outside to the inner side of the chamber inside toward the direction close to the bottom plate, and the top of the guide surface extends to the outer wall of the side plate.

8. The tunnel surrounding rock surface water leakage collection device as claimed in claim 4, characterized in that: A supporting rib is fixedly arranged between two opposite side plates in the same compartment; or A plurality of support columns are fixedly arranged on the bottom plate, and the support columns extend along the bottom plate toward and abut against the tunnel surrounding rock surface.

9. The tunnel surrounding rock surface water leakage collection device according to claim 8, characterized in that: The support ribs are cross-arranged and integrally formed, and drainage grooves are provided at the intersections of the support ribs.

10. The tunnel surrounding rock surface water leakage collection device according to claim 8, characterized in that: A suction cup is fixedly arranged at the end of the support column away from the bottom plate, and the suction cup is fixed by adsorption to the surrounding rock surface of the tunnel.

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