CN215860202U - Anti-fault structure crossing active fault tunnel - Google Patents
Anti-fault structure crossing active fault tunnel Download PDFInfo
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- CN215860202U CN215860202U CN202121736859.0U CN202121736859U CN215860202U CN 215860202 U CN215860202 U CN 215860202U CN 202121736859 U CN202121736859 U CN 202121736859U CN 215860202 U CN215860202 U CN 215860202U
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Abstract
The utility model provides a stride anti-fracture wrong structure in active fault tunnel, relate to tunnel engineering technical field, include along the outer support and the inlayer support of the radial setting in tunnel, connect through coupling assembling between outer support and the inlayer support, coupling assembling includes first stock and hydraulic jack, the one end and the inlayer of first stock are strutted fixed connection, the other end passes outer support and stretches to outside country rock, hydraulic jack's both ends respectively with outer support and inlayer support fixed connection, first stock and hydraulic jack set up respectively in the relative both sides that the inlayer was strutted. The fault-breaking-resistant structure of the cross-active fault tunnel has the capability of well resisting fault creep and dislocation damage, and can effectively avoid damage of fault creep to the whole tunnel.
Description
Technical Field
The utility model relates to the technical field of tunnel engineering, in particular to an anti-fault structure of a cross-active fault tunnel.
Background
China is among Asia-Europe plates, Indian ocean plates and Pacific ocean plates, is influenced by plate motion, and is widely distributed with active faults of various scales. With the rapid development of economy and science and technology, tunnels are vigorously built in China, avoidance is mainly adopted when active fault sections are met, but the avoidance is limited by line selection, and a large number of tunnels still inevitably need to pass through active faults. There are two basic modes of activity for active faults: the creeping type and the stick-slip type are not directly earthquakes, but permanent displacement caused by continuous sliding of the creeping type and the stick-slip type is difficult to resist, and as the dislocation distance is gradually increased, cracks are generated in the tunnel lining and continuously expanded, and finally shearing damage occurs, so that large-area damage is caused to the tunnel, the tunnel structure is damaged and difficult to repair, and traffic safety and life safety of people are damaged. How to effectively prevent and control the damage of fault creep to the tunnel is one of the difficult problems which need to be solved urgently.
For tunnel engineering crossing a creeping dislocation fault, at present, a shearing joint is mostly arranged to guide a tunnel damage position so as to avoid concentrated damage, such as a Claremont water delivery tunnel in the United states, a Bolu tunnel in Turks and the like. In addition, the tunnel can resist deformation and vibration by means of local reinforcement, shock absorption layers and the like. However, it is difficult to ensure the smoothness of the track running in the tunnel in the fault creep of the long-term continuity, and it is difficult to have an excellent fault-resistant effect even when sudden dislocation occurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an anti-fault structure crossing an active fault tunnel, which has good capability of resisting fault creep and fault dislocation damage and can effectively avoid the damage of fault creep to the whole tunnel.
The embodiment of the utility model is realized by the following steps:
the embodiment of the utility model provides an anti-fault structure crossing an active fault tunnel, which comprises an outer layer support and an inner layer support, wherein the outer layer support and the inner layer support are arranged along the radial direction of the tunnel and are connected through a connecting assembly, the connecting assembly comprises a first anchor rod and a hydraulic jack, one end of the first anchor rod is fixedly connected with the inner layer support, the other end of the first anchor rod penetrates through the outer layer support and extends to an external surrounding rock, two ends of the hydraulic jack are respectively fixedly connected with the outer layer support and the inner layer support, and the first anchor rod and the hydraulic jack are respectively arranged on two opposite sides of the inner layer support. The fault-breaking-resistant structure of the cross-active fault tunnel has the capability of well resisting fault creep and dislocation damage, and can effectively avoid damage of fault creep to the whole tunnel.
Optionally, the first anchor rod is located on one side of the inner support which is under tension when moving relative to the outer surrounding rock under the action of the active fault, and the hydraulic jack is located on one side of the inner support which is under pressure when moving relative to the outer surrounding rock under the action of the active fault.
Optionally, the number of the first anchor rods is multiple, and the number of the hydraulic jacks is at least one.
Optionally, the coupling assembling still includes supporting platform, supporting platform is located under the action of gravity the inlayer receives the one side of pressure when strutting the relative outside country rock motion, supporting platform follows under active fault and the action of gravity the inlayer is strutted the motion trajectory extension of relative outside country rock.
Optionally, the support platform is made of concrete casting.
Optionally, the first anchor comprises a negative poisson's ratio anchor.
Optionally, outer support includes preliminary bracing and a plurality of second stock that radially set up along the tunnel is radial, the preliminary bracing sets up along the excavation contour line in tunnel, the one end of second stock is fixed in preliminary bracing, the other end stretch to outside country rock.
Optionally, the second anchor rod extends in a direction perpendicular to the primary support.
Optionally, the inner support comprises a first pipeline arranged along the axial direction of the tunnel and a second pipeline sleeved outside the first pipeline, and concrete is filled between the first pipeline and the second pipeline.
Optionally, the inner support is provided with a plurality of maintenance channels along the tunnel axial direction, the maintenance channels radially run through in proper order along the tunnel first pipeline, the concrete with the second pipeline.
The embodiment of the utility model has the beneficial effects that:
the anti-fault structure of the cross-active fault tunnel comprises an outer support and an inner support which are arranged along the radial direction of the tunnel, and the outer support and the inner support are two parts which are independent from each other and arranged at intervals, so that when the active fault generates fault movement, the outer support and the inner support in a fault movement area can generate relative displacement to a certain extent along the fault movement direction. Wherein, this shock-absorbing structure who strides active fault tunnel is strutted through the skin and is connected through coupling assembling between strutting with the inlayer, coupling assembling includes first stock and hydraulic jack, the one end and the inlayer of first stock are strutted fixed connection, the other end passes the skin and is strutted and stretch to outside country rock, hydraulic jack's both ends respectively with skin and strut fixed connection with the inlayer, first stock and hydraulic jack set up respectively in the relative both sides that the inlayer was strutted, in order to play the holistic effect of fixed tunnel of suspending in midair through first stock and hydraulic jack mutually supporting jointly. Under the condition of fault creep, the stress and the displacement can be automatically adjusted according to surrounding rock displacement and ground stress by the first anchor rod and the hydraulic jack, so that the effect of self-adaption of the whole tunnel and the external surrounding rock is achieved, further, the inner layer support is ensured to be hardly damaged, the tunnel is not influenced when a vehicle passes through, and tunnel engineering only needs to be periodically overhauled. The fault-breaking-resistant structure of the cross-active fault tunnel has the capability of well resisting fault creep and dislocation damage, and can effectively avoid damage of fault creep to the whole tunnel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is one of schematic structural diagrams of an anti-fault structure of a cross active fault tunnel according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of an anti-fault structure of a cross active fault tunnel according to an embodiment of the present invention;
fig. 3 is a third schematic structural diagram of an anti-fault structure of a cross active fault tunnel according to an embodiment of the present invention;
fig. 4 is a fourth schematic structural diagram of an anti-fault structure of a cross active fault tunnel according to an embodiment of the present invention;
fig. 5 is a fifth schematic structural diagram of an anti-fault structure of a cross active fault tunnel according to an embodiment of the present invention;
fig. 6 is a sixth schematic structural view of an anti-fault structure of a cross active fault tunnel according to an embodiment of the present invention;
fig. 7 is a seventh schematic structural diagram of an anti-fault structure of a cross active fault tunnel according to an embodiment of the present invention;
fig. 8 is an eighth schematic structural diagram of an anti-fault structure crossing an active fault tunnel according to an embodiment of the present invention.
Icon: 10-outer layer supporting; 11-primary support; 12-a second anchor; 20-a connecting assembly; 21-a first anchor rod; 22-hydraulic jack; 23-a support platform; 30-inner layer supporting; 31-a first conduit; 32-a second conduit; 33-concrete; 40-maintenance channel; 200-surrounding rock; a-tunnel initial position; b-the position of the tunnel relative to the surrounding rock after dislocation.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, the embodiment provides an anti-fault-breaking structure for a cross-active fault tunnel, which includes an outer support 10 and an inner support 30 radially disposed along the tunnel, the outer support 10 and the inner support 30 are connected by a connection assembly 20, the connection assembly 20 includes a first anchor rod 21 and a hydraulic jack 22, one end of the first anchor rod 21 is fixedly connected to the inner support 30, the other end of the first anchor rod 21 penetrates through the outer support 10 and extends to an external surrounding rock 200, two ends of the hydraulic jack 22 are respectively fixedly connected to the outer support 10 and the inner support 30, and the first anchor rod 21 and the hydraulic jack 22 are respectively disposed on two opposite sides of the inner support 30. The fault-breaking-resistant structure of the cross-active fault tunnel has the capability of well resisting fault creep and dislocation damage, and can effectively avoid damage of fault creep to the whole tunnel.
First, as shown in fig. 1 to 3, the fault-resistant structure across the active fault tunnel includes an outer support 10 and an inner support 30, and the outer support 10 and the inner support 30 are arranged from the outside to the inside in the radial direction of the tunnel. The specific structures and construction manners of the outer layer support 10 and the inner layer support 30 described above should be reasonably selected and designed by those skilled in the art according to the specific structures and construction manners of the outer layer support 10 and the inner layer support 30 in the tunnel lining structure in the prior art, and are not limited in this regard. In addition, the surrounding rocks 200 in the drawings are only used to facilitate understanding of the tunnel lining structure, and are not included in the tunnel lining structure.
Secondly, the outer-layer support 10 and the inner-layer support 30 are two parts which are independent from each other and are arranged at intervals, in other words, a cavity is arranged between the outer-layer support 10 and the inner-layer support 30, so that when the active fault moves in a faulted way, the outer-layer support 10 and the inner-layer support 30 in the faulted way can generate a certain degree of relative displacement along the faulted way, at the moment, the cavity can reserve a moving space for the relative displacement between the whole tunnel and the external surrounding rock 200 under the faulted creeping and sliding movement condition, and therefore the position, the stress and the shape of the whole tunnel can be basically kept unchanged no matter how the external surrounding rock 200 moves slowly, and the influence on the whole tunnel is reduced.
Thirdly, the anti-fault structure crossing the active fault tunnel is respectively connected with the outer layer support 10 and the inner layer support 30 through the connecting assembly 20, as shown in fig. 1 and 3, the connecting assembly 20 comprises a first anchor rod 21 and a hydraulic jack 22, one end of the first anchor rod 21 is fixedly connected with the inner layer support 30, the other end of the first anchor rod 21 penetrates through the outer layer support 10 and extends to the external surrounding rock 200, two ends of the hydraulic jack 22 are respectively fixedly connected with the outer layer support 10 and the inner layer support 30, and the first anchor rod 21 and the hydraulic jack 22 are respectively arranged on two opposite sides of the inner layer support 30, so that the first anchor rod 21 and the hydraulic jack 22 are mutually matched to jointly play a role of suspending and fixing the whole tunnel.
In the actual construction process, a person skilled in the art should be able to determine whether the first anchor rod 21 and the hydraulic jack 22 are in a tensioned state or a compressed state respectively according to the fault creep direction, and if the first anchor rod 21 is in a tensioned state and the hydraulic jack 22 is in a compressed state, an anchor rod with strong tensile strength is selected, and if the first anchor rod 21 is in a compressed state and the hydraulic jack 22 is in a tensioned state, a yielding anchor rod is selected. The hydraulic jack 22 can bear both pressure and tension, so the type is not limited in detail.
In addition, basic parameters such as rod strength and pitch of the first anchor rods 21 are selected according to the relation between the stress of the surrounding rock 200 and the deformation of the surrounding rock 200. Under the condition of fault creeping, the first anchor rod 21 and the hydraulic jack 22 can automatically adjust stress and displacement according to the displacement of the surrounding rock 200 and the ground stress, so that the effect of self-adaption of the whole tunnel and the external surrounding rock 200 is achieved, further, the inner layer support 30 is ensured not to be damaged, the traffic in the tunnel is not influenced, and tunnel engineering only needs to be maintained regularly.
It should be noted that, compared with the tunnel lining structures in other areas, the tunnel lining structure in the fault dislocation area needs to reduce the influence of the upper and lower wall dislocation and the ground vibration on the cross-active fault tunnel by the support structure, but this does not mean that the tunnel lining structure in other areas cannot be constructed in the manner described above, that is, the tunnel lining structure in other areas can also connect the outer layer support 10 and the inner layer support 30 by the support structure described above on the premise of not affecting the tunnel lining structure.
In addition, along the radial direction of the tunnel, the radius of the cavity can be reasonably selected and designed according to the creeping direction and speed of the fault and the designed maintenance life, and no specific limitation is made here; along the axial direction of the tunnel, the radius of the cavity can be determined in a segmented mode according to the displacement mode of the active fault, namely, the rock mass is partitioned into a small displacement area, a middle displacement area and a large displacement area according to the displacement mode of the active fault, then the radius of the expanded excavated cavity is determined in a segmented mode, and the economic cost is controlled by adopting a progressive excavation mode.
As described above, the fault-resistant structure across the active fault tunnel includes the outer layer support 10 and the inner layer support 30 which are arranged along the radial direction of the tunnel, and since the outer layer support 10 and the inner layer support 30 are two parts which are independent and arranged at an interval, when the active fault generates a fault, the outer layer support 10 and the inner layer support 30 in the fault-fault movement region generate a certain degree of relative displacement along the fault-fault movement direction. The shock absorption structure of the cross-activity fault tunnel is connected with an inner layer support 30 through a connecting assembly 20 through an outer layer support 10, the connecting assembly 20 comprises a first anchor rod 21 and a hydraulic jack 22, one end of the first anchor rod 21 is fixedly connected with the inner layer support 30, the other end of the first anchor rod passes through the outer layer support 10 and extends to an external surrounding rock 200, two ends of the hydraulic jack 22 are fixedly connected with the outer layer support 10 and the inner layer support 30 respectively, the first anchor rod 21 and the hydraulic jack 22 are arranged on two opposite sides of the inner layer support 30 respectively, and the first anchor rod 21 and the hydraulic jack 22 are matched with each other to play a role of suspending the whole fixed tunnel together. Under the condition of fault creeping, the first anchor rod 21 and the hydraulic jack 22 can automatically adjust stress and displacement according to the displacement of the surrounding rock 200 and the ground stress, so that the effect of self-adaption of the whole tunnel and the external surrounding rock 200 is achieved, further, the inner layer support 30 is ensured not to be damaged, the traffic in the tunnel is not influenced, and tunnel engineering only needs to be maintained regularly. The fault-breaking-resistant structure of the cross-active fault tunnel has the capability of well resisting fault creep and dislocation damage, and can effectively avoid damage of fault creep to the whole tunnel.
In this embodiment, the first anchor rod 21 is located on one side of the inner-layer support 30 that receives tension when moving relative to the outer surrounding rock 200 under the action of the active fault, and the hydraulic jack 22 is located on one side of the inner-layer support 30 that receives pressure when moving relative to the outer surrounding rock 200 under the action of the active fault, at this time, the first anchor rod 21 may be an anchor rod with strong tensile strength, for example, the first anchor rod 21 may be an anchor rod with a negative poisson's ratio, and the hydraulic jack 22 may be a yielding jack.
It should be noted that, when the Negative Poisson's Ratio (NPR) anchor rod is subjected to uniaxial tension, lateral expansion occurs, and when an external load exceeds a designed constant resistance, the constant resistance body generates frictional sliding along the inner wall (in a thread shape) of the constant resistance sleeve to resist the breaking effect of the surrounding rock 200 on the anchor rod due to large deformation, so that the Negative Poisson's Ratio anchor rod has more excellent performances in shearing resistance, impact resistance and energy absorption compared with a common anchor rod.
As shown in fig. 1 to 3, alternatively, the number of the first anchor rods 21 is plural, and the number of the hydraulic jacks 22 is at least one. Regarding the number of the first anchor rods 21 and the hydraulic jacks 22, a person skilled in the art should be able to select and design the number reasonably according to actual situations, and the number is not limited specifically, and only needs to enable the tunnel as a whole and the external surrounding rock 200 to achieve an adaptive effect under the combined action of the first anchor rods 21 and the hydraulic jacks 22.
Referring to fig. 4 to 6, in the present embodiment, the connection assembly 20 further includes a support platform 23, the support platform 23 is located on a side of the inner support 30, which is pressed by the gravity when moving relative to the outer surrounding rock 200, and the support platform 23 extends along a movement track of the inner support 30 relative to the outer surrounding rock 200 under the action of the active fault and the gravity. Wherein, the supporting platform 23 is made by pouring concrete 33.
It should be noted that those skilled in the art should be able to determine the direction of the fault creep based on the monitoring results and other means, and the movement trajectory of the inner support 30 relative to the outer surrounding rock 200 can also be roughly determined. Specifically, as shown in fig. 5 and 6, in the radial direction of the tunnel, each tunnel section can geometrically determine a specific sliding surface according to the initial position a of the tunnel and the position b of the tunnel after the tunnel is dislocated relative to the surrounding rock 200, the sliding surfaces on all the tunnel sections are connected, namely the movement track of the inner-layer support 30 relative to the outer surrounding rock 200, as shown in fig. 4, on the basis of which the support platform 23 can be prepared by pouring concrete 33, so that the total weight of the inner-layer support 30, the facilities and vehicles therein can be borne by the support platform 23.
In the actual construction process, a constructor can firstly complete the outer support 10, then directly pour the concrete 33 at the preset position of the outer support 10 to form the supporting platform 23, assemble the inner support 30 after the pouring is finished, and then respectively connect the outer support 10 and the inner support 30 through the first anchor rod 21 and the hydraulic jack 22 along the direction parallel to the reference surface. In which the first anchor bar 21 and the hydraulic jack 22 are provided in the direction parallel to the reference plane in order to reduce the shear stress as much as possible.
Referring to fig. 7, in the present embodiment, the outer layer support 10 includes a primary support 11 and a plurality of second anchor rods 12 radially arranged along a radial direction of the tunnel, the primary support 11 is arranged along an excavation contour line of the tunnel, and one end of the second anchor rods 12 is fixed to the primary support 11 and the other end thereof extends to the outer surrounding rock 200.
It should be noted that the outer support 10 includes a primary support 11 and a plurality of anchor rods, the plurality of anchor rods are radially arranged along the tunnel, the primary support 11 is arranged along the excavation contour line of the tunnel, generally, the fault surrounding rock 200 is broken, after excavation, the concrete 33 can be sprayed firstly as the primary support 11, one end of each anchor rod is fixed to the primary support 11, and the other end of each anchor rod extends to the external surrounding rock 200, so that the strength of the surrounding rock 200 is increased through the mutual cooperation of the primary support 11 and the anchor rods, when the fault does not move violently, the surrounding rock 200 is allowed to deform to a certain extent, and the stability of the surrounding rock 200 is ensured.
Of course, in other embodiments, the outer layer support 10 may also adopt other support measures, such as grouting bolt support, combined support of steel arch and shotcrete 33, etc., and those skilled in the art can make reasonable judgment and selection according to the integrity and construction conditions of the field surrounding rock 200, so that the tunnel outer layer surrounding rock 200 will not collapse in a large range when a fault creeps or a minor earthquake occurs.
As shown in fig. 7, in the present embodiment, the extending direction of the anchor is perpendicular to the primary support 11. In the actual construction process, a constructor can firstly measure the actual position of the anchor rod, then drill a hole in the primary support 11, then drive the anchor rod into the external surrounding rock 200 along the direction perpendicular to the primary support 11 (or the excavation contour line of the tunnel), and then perform grouting and sealing.
Referring to fig. 8, in the present embodiment, the inner support 30 includes a first pipe 31 disposed along the axial direction of the tunnel and a second pipe 32 sleeved outside the first pipe 31, and concrete 33 is filled between the first pipe 31 and the second pipe 32.
It should be noted that, firstly, the inner support 30 includes a first pipeline 31 and a second pipeline 32, both the first pipeline 31 and the second pipeline 32 are arranged along the axial direction of the tunnel, wherein the inner wall surface of the first pipeline 31 is arranged along the clearance of the tunnel, in other words, the inside of the first pipeline 31 is the inside of the tunnel, the second pipeline 32 is sleeved outside the first pipeline 31, and concrete 33 is filled between the outer wall surface of the first pipeline 31 and the inner wall surface of the second pipeline 32, so that the first pipeline 31 and the second pipeline 32 form a stable and firm integral closed structure together through the concrete 33, thereby improving the compressive capacity, bending capacity, seismic resistance and impermeability of the whole tunnel, and further improving the bearing capacity of the whole tunnel when the external surrounding rock 200 collapses in a small scale.
Secondly, in order to further enhance the firmness of the inner support 30, in this embodiment, the first pipe 31 and the second pipe 32 are made of steel, so that the first pipe 31, the concrete 33 and the second pipe 32 can form the inner support 30 with very high strength, so as to ensure the integrity of the tunnel structure in the case of the creeping of the fault.
As shown in fig. 8, in the present embodiment, the inner support 30 is provided with a plurality of service passages 40 along the axial direction of the tunnel, and the service passages 40 sequentially penetrate through the first pipe 31, the concrete 33 and the second pipe 32 along the radial direction of the tunnel, so as to facilitate regular inspection and maintenance of the tunnel structure through the reserved service passages 40.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a stride anti mistake structure of breaking in active fault tunnel which characterized in that, includes along the radial outer support and the inlayer support that sets up in tunnel, outer support with connect through coupling assembling between the inlayer support, coupling assembling includes first stock and hydraulic jack, the one end of first stock with inlayer support fixed connection, the other end pass outer support stretches to outside country rock, hydraulic jack's both ends respectively with outer support with inlayer support fixed connection, first stock with hydraulic jack set up respectively in the relative both sides that the inlayer was strutted.
2. The fault-resistant structure spanning an active fault tunnel according to claim 1, wherein the first anchor rod is located on a side of the inner support which is subjected to tension when moving relative to the outer surrounding rock under the active fault, and the hydraulic jack is located on a side of the inner support which is subjected to compression when moving relative to the outer surrounding rock under the active fault.
3. The fault-resistant structure spanning an active fault tunnel according to claim 1, wherein the number of the first anchor rods is plural, and the number of the hydraulic jacks is at least one.
4. The fault-resilient structure across an active fault tunnel of claim 1, wherein the connection assembly further comprises a support platform located on a side of the inner support that is under pressure when the inner support moves relative to the outer wall rock under the influence of gravity, the support platform extending along a trajectory of movement of the inner support relative to the outer wall rock under the influence of the active fault and the influence of gravity.
5. The fault-resistant structure spanning an active fault tunnel according to claim 4, wherein the support platform is made of concrete casting.
6. The fault-resistant structure across an active fault tunnel according to any one of claims 1 to 5, wherein the first anchor comprises a negative Poisson ratio anchor.
7. The fault-resistant structure across an active fault tunnel according to claim 1, wherein the outer support comprises a primary support and a plurality of second anchor rods radially arranged along the radial direction of the tunnel, the primary support is arranged along the excavation contour line of the tunnel, one end of each second anchor rod is fixed to the primary support, and the other end of each second anchor rod extends to the outer surrounding rock.
8. The fault-resistant structure across an active fault tunnel of claim 7, wherein the second anchor rod extends in a direction perpendicular to the primary support.
9. The fault-breaking-resistant structure spanning active fault tunnels according to claim 1, wherein the inner layer support comprises a first pipeline and a second pipeline, the first pipeline is arranged along the axial direction of the tunnel, the second pipeline is sleeved outside the first pipeline, and concrete is filled between the first pipeline and the second pipeline.
10. The fault-breaking-resistant structure spanning an active fault tunnel according to claim 9, wherein the inner layer support is provided with a plurality of service passages along the axial direction of the tunnel, and the service passages sequentially penetrate through the first pipeline, the concrete and the second pipeline along the radial direction of the tunnel.
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| CN202121736859.0U CN215860202U (en) | 2021-07-28 | 2021-07-28 | Anti-fault structure crossing active fault tunnel |
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| CN202121736859.0U CN215860202U (en) | 2021-07-28 | 2021-07-28 | Anti-fault structure crossing active fault tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704288A (en) * | 2022-05-18 | 2022-07-05 | 华中科技大学 | A shock attenuation is from restoring to throne tunnel structure for broken area of fault |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704288A (en) * | 2022-05-18 | 2022-07-05 | 华中科技大学 | A shock attenuation is from restoring to throne tunnel structure for broken area of fault |
| CN114704288B (en) * | 2022-05-18 | 2022-11-29 | 华中科技大学 | A shock attenuation is from restoring to throne tunnel structure for broken area of fault |
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