Temporary reinforced support device for shallow-buried water-rich broken stratum tunnel construction

Abstract

The utility model provides a temporary reinforced support device for shallow-buried water-rich broken stratum tunnel construction, which comprises a support body matched with a tunnel vault in shape, an elastic cushion paved on the upper surface of the support body, and a jacking component for providing support force for the support body, the jacking assembly comprises a supporting column, a vehicle-mounted jack and a construction trolley. Aiming at the characteristic that surrounding rock in a shallowly-buried water-rich broken stratum is fragile, through the supporting body conforming to the shape of the tunnel vault and the elastic cushion laid on the supporting body, sufficient supporting force can be provided for safe construction of a working area, the defect that a rigid body makes direct contact with the surrounding rock can be overcome, and the surrounding rock can be better protected; according to the utility model, good stability is provided while supporting force is provided through the vehicle-mounted jack, and the whole vehicle-mounted jack is easy to mount and dismount and can be repeatedly used.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel construction technical field, especially in shallow rich water broken stratum tunnel construction in the temporary reinforcement supporting device for. BACKGROUND

[0002] In shallow rich water broken stratum, tunnel excavation is prone to soil collapse, groundwater inflow and other phenomena, causing surrounding rock deformation and even damage, leading to project failure, which greatly wastes manpower and material resources, and also causes safety incidents such as personnel casualties. While focusing on construction, temporary reinforcement, groundwater leakage and the pressure on surrounding rock can be reduced, which can greatly improve the safety of tunnel excavation in shallow rich water broken stratum and ensure the integrity of the project.

[0003] In the prior art, the common temporary reinforcement supporting device has the problems of complex structure, large components, difficult installation and disassembly, high cost and the like. The airborne temporary reinforcement supporting device has the problems of no initial support for the support of the empty top area, poor safety and reliability, complex operation process, reliance on manual operation, long supporting time, low temporary supporting efficiency and the like. In addition, the operator must enter the empty top area for erection operation, which may cause safety hazards. Therefore, the temporary reinforcement supporting device for shallow rich water broken stratum tunnel construction can better solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at the deficiencies in the above background technology, and provides a temporary reinforcement supporting device which conforms to the tunnel arch structure, can provide sufficient support for the safe construction of the working area, better protect the surrounding rock and maintain good stability.

[0005] To achieve the above purpose, the utility model provides a temporary reinforcement supporting device for shallow rich water broken stratum tunnel construction, which comprises a support body matched with the shape of the tunnel vault, an elastic pad laid on the upper surface of the support body, and a jacking assembly providing support force to the support body.

[0006] The elastic pad is made of elastic material.

[0007] The jacking assembly comprises a support column, a vehicle-mounted jack and a construction trolley, the support body is connected with the vehicle-mounted jack through the support column, and the vehicle-mounted jack is used for applying support force.

[0008] The vehicle-mounted jack is arranged on the construction trolley, the construction trolley is provided with wheels and supporting legs, the wheels are used for moving in the tunnel, and the supporting legs are used for supporting and fixing after being positioned.

[0009] Further, the elastic material is rubber material.

[0010] Further, the first end of the support column is provided with an elastic head made of elastic material, the support body is provided with a support hole matched with the elastic head, and the elastic head is movably connected with the support hole.

[0011] Further, the elastic head and the support hole are both conical.

[0012] Further, the second end of the support column is provided with a thread, and the support column is connected with the vehicle-mounted jack through the thread.

[0013] Further, the vehicle-mounted jack is provided with a pressing rod.

[0014] Further, three support holes are arranged on the support body, and the support is provided by three groups of support columns and vehicle-mounted jacks, the support column at the middle position is vertically arranged and connected with the support hole at the center of the support body, and the support columns at the left and right positions are obliquely arranged and connected with the support holes at the two sides of the support body.

[0015] Further, the number of the construction trolleys is three or one, so that the three vehicle-mounted jacks are respectively installed on different construction trolleys or are all installed on the same construction trolley.

[0016] The above scheme of the utility model has the following beneficial effects:

[0017] The temporary reinforcing support device for shallow-buried water-rich broken stratum tunnel construction provided by the utility model can provide sufficient support force for the safe construction of the working area, can make up for the defect of direct contact between the rigid body and the surrounding rock, and can better protect the surrounding rock; the vehicle-mounted jack can provide good stability while providing support force, is easy to install and disassemble, and can be repeatedly used;

[0018] Other beneficial effects of the utility model will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a support column schematic view of the utility model;

[0021] Figure 3 It is a vehicle-mounted jack and construction trolley schematic view of the utility model.

[0022] [Legend of the drawing]

[0023] 1-support body; 2-elastic pad; 3-support column; 4-vehicle jack; 5-construction trolley; 6-elastic head; 7-support hole; 8-thread; 9-pressing rod; 10-wheel; 11-foot. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical schemes and advantages to be solved by the present application more clear, the following will be described in detail in combination with the drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application. In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0025] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be a locking connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements inside. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0027] As Figure 1As shown, the embodiment of the utility model provides a kind of temporary reinforcement support device for shallow buried water-rich broken stratum tunnel construction, including with the support body 1 of tunnel vault shape matching, the elastic pad 2 of upper surface laying on support body 1, and the jacking assembly of support body 1 provides support force.Equipped with elastic pad 2 can use rubber pad etc., and it is more convenient to obtain materials.Elastic pad 2 is evenly laid on the upper surface of support body 1.Support body 1 is attached to tunnel vault, which can provide sufficient support force for the safe construction of working area through support body 1, and can compensate the direct contact of rigid body and tunnel vault through rubber material, to better protect surrounding rock and support body 1 itself.

[0028] Wherein, jacking assembly includes support column 3, car jack 4 and construction trolley 5.Support body 1 is connected with car jack 4 by support column 3, relies on car jack 4 to exert support force, to ensure good stability while providing support force, in addition to make device easy to install and disassemble, can be reused.At the same time as Figure 2 As shown, the first end of support column 3 is provided with elastic head 6, and support body 1 is provided with support hole 7 matched with elastic head 6.Elastic head 6 and support hole 7 are connected in live when installing, i.e.elastic head 6 is directly inserted into support hole 7, which can firmly support support body 1 under the action of gravity, and provide support force after support body 1 contacts with tunnel vault.

[0029] It should be noted that, by inserting elastic head 6, such as rubber head, into support hole 7, the first end of support column 3 can also be avoided from hard contact with support body 1 by using rubber material, which can cause damage after long-term use.As a preferred embodiment, elastic head 6 and support hole 7 are both tapered in this embodiment, so that support column 3 can be more conveniently inserted into support hole 7 and connected with support body 1.Of course, in other embodiments, it can also be set as trapezoidal, etc., which is not specifically limited here.

[0030] In this embodiment, the second end of support column 3 is provided with screw 8, which is connected with car jack 4 to lift support body 1 by relying on the force of car jack 4 until it contacts with tunnel vault.Wherein, car jack 4 is provided with pressing rod 9, which can be directly pressed downward when exerting force on car jack 4.Car jack 4 is arranged on construction trolley 5, and as Figure 3 As shown, construction trolley 5 needs to be provided with wheels 10 and supporting legs 11, so that construction trolley 5 can be supported and fixed by supporting legs 11 after being positioned, to avoid instability caused by slipping.

[0031] It can be understood that if only a single support column 3 is used to support the support body 1, the support body 1 will not be stable. Based on this, three support holes 7 are provided on the support body 1 in the embodiment, and three groups of support columns 3 and vehicle-mounted jacks 4 are used for support during temporary reinforcement support. Among them, the construction trolley 5 can be provided with three or only one, and the three vehicle-mounted jacks 4 are installed on one construction trolley 5. It is shown that the three vehicle-mounted jacks 4 are installed on the three construction trolleys 5 respectively, and the support column 3 located in the middle position is vertically arranged and connected with the support hole 7 at the center of the support body 1; the support columns 3 located on the left and right positions are inclined and connected with the support holes 7 on both sides of the support body 1. Therefore, on the corresponding construction trolley 5, the vehicle-mounted jacks 4 also need to be inclined, and the mounting plate of the corresponding construction trolley 5 can be inclined to match the inclined support mode. Therefore, compared with the single support which has poor stability and may fall off during temporary reinforcement support, the stability can be improved by this three-position support mode to avoid falling off.

[0032] During the tunnel construction process in the shallow buried water-rich broken stratum, the temporary reinforcement support device provided in the embodiment is used to determine the temporary reinforcement support position by the construction personnel, reserve the foot hole (the supporting leg 11 of the construction trolley 5 is embedded) and leave the wheel 10 (ensure that the four supporting legs 11 support the ground); the support body 1 is threadedly connected with the vehicle-mounted jack 4 at the center position, and then the construction trolley 5 is pushed to the pre-supporting position, the supporting leg 11 is embedded in the reserved foot hole, then the vehicle-mounted jack 4 is pressed to gradually raise the support body 1, finally the support body 1 is in contact with the tunnel vault, and the support body 1 is pressed several times to ensure that it provides sufficient support force; the other two vehicle-mounted jacks 4 and support columns 3 are installed to match the positions of the installed vehicle-mounted jacks 4, and the corresponding supporting legs 11 are also embedded in the reserved foot holes, and then the other two vehicle-mounted jacks 4 are pressed until the support columns 3 are inserted into the support holes 7 on both sides of the support body 1, and the pressing is continued for several times to ensure sufficient support.

[0033] The temporary reinforcement support device needs to be dismantled in time after the tunnel construction is completed or no longer needs support. The device can be dismantled according to the reverse order of the above installation steps, and only the rubber material of the support body 1 and the support column 3 needs to be replaced next time.

[0034] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0035] The above embodiments only express several implementation ways of the present application, and the description is specific and detailed, but it should not be understood as a limitation to the scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A temporary reinforcing support device for use in the construction of a tunnel in a shallow, water-rich, broken formation, characterised in that, The support body matches the shape of the tunnel vault, the elastic pad is laid on the upper surface of the support body, and the jacking assembly provides a supporting force for the support body; The elastic pad is made of elastic material; The jacking assembly includes a support column, a vehicle-mounted jack, and a construction trolley, the support body is connected with the vehicle-mounted jack through the support column, and the vehicle-mounted jack is used to apply a supporting force, The vehicle-mounted jack is arranged on the construction trolley, the construction trolley is provided with wheels and legs, the wheels are used to move in the tunnel, and the legs are used to support and fix after being positioned.

2. The temporary reinforcement support device for use in the construction of a tunnel in a shallow water-rich broken stratum according to claim 1, characterized by, The elastic material is rubber material.

3. The temporary reinforcement support device for use in the construction of a tunnel in a shallow water-rich broken stratum according to claim 1, characterized by, A first end of the support column is provided with an elastic head made of elastic material, the support body is provided with a support hole matched with the elastic head, and the elastic head is movably connected with the support hole.

4. The temporary reinforcement support device for use in the construction of a tunnel in a shallow, water-rich, broken formation according to claim 3, characterized in that, The elastic head and the support hole are both conical.

5. The temporary reinforcement support device for use in the construction of a tunnel in a shallow, water-rich, broken formation according to claim 1, characterized in that, A second end of the support column is provided with a thread, and the support column is connected with the vehicle-mounted jack through the thread.

6. The temporary reinforcement support device for use in the construction of a tunnel in a shallow, water-rich, broken formation according to claim 1, characterized in that, The vehicle-mounted jack is provided with a pressing rod.

7. The temporary reinforcement support device for use in the construction of a tunnel in a shallow, water-rich, broken formation according to claim 3, characterized in that, Three support holes are arranged on the support body, the support body is supported by three groups of support columns and vehicle-mounted jacks, the support column located in the middle position is vertically arranged and connected with the support hole in the center of the support body, and the support columns located on the left and right positions are obliquely arranged and connected with the support holes on the two sides of the support body.

8. The temporary reinforcement support device for use in the construction of a tunnel in a shallow, water-rich, broken formation according to claim 7, characterized in that, The number of the construction trolleys is three or one, so that the three vehicle-mounted jacks are respectively installed on different construction trolleys or are all installed on the same construction trolley.

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