Emergency device for collapse of vault of subsurface tunnel

Abstract

The utility model relates to the technical field of tunnel construction emergency, and discloses a bored tunnel vault collapse emergency device which comprises a fixing plate, the upper surface of the fixing plate is provided with a limiting mechanism, the limiting mechanism comprises a screw rod, a fixing rod and a bearing plate, and one end of the screw rod is rotationally connected with the interior of the fixing plate in a sleeved mode. According to the emergency device for collapse of the mined tunnel vault, through matched use of the screw rods and the threads of the fixing rods, the jacking height can be rapidly adjusted, the top plate rapidly abuts against the collapse face, instant supporting is formed, collapse is prevented from being further expanded, and construction safety is guaranteed; and an external reinforcing rod can be inserted, so that the overall stability is enhanced, lateral instability of the supporting structure is prevented, the problem of linkage operation between height adjustment and splicing is solved, the effect of being more stable during jacking can be achieved, the phenomenon of back moving is avoided, and the overall stability during use is improved.

Description

Technical Field

[0001] This utility model relates to the field of emergency technology in tunnel construction, specifically an emergency device for the collapse of the arch of a mined tunnel. Background Technology

[0002] A tunnel is a linear transportation structure that passes through mountains, water bodies, or underground, mainly used for the passage of vehicles, pedestrians, or pipelines. According to the construction method, it can be divided into cut-and-cover method and tunnel excavation method. In tunnel excavation, the crown collapse is one of the major risks, which is often caused by geological conditions, insufficient support, or construction disturbance. It is necessary to take measures such as advanced support and monitoring and measurement to prevent it. To deal with crown collapse accidents, tunnel projects are equipped with emergency devices to avoid major losses.

[0003] According to the emergency device for the collapse of the tunnel arch as described in application number CN201620673837.7, this solution addresses the problems that the handling of tunnel arch collapse and instability cannot guarantee timeliness, cannot effectively control the expansion of the collapse and instability effect, are prone to secondary safety hazards, and to a certain extent affect the construction cycle and construction quality.

[0004] The existing emergency devices for tunnel vault collapse still have the following problems in actual use:

[0005] When adjusting the height, the top plate is moved by adjusting the lead screw to adapt to different height requirements. However, the pressure is high during tunnel collapse, which can cause the lead screw to shift back. In addition, the lead screw has poor stability and cannot provide more stable support, which reduces safety in practice. Furthermore, it cannot combine the limit of the lead screw with the limit of the overall splicing, which increases the complexity of operation in practice and is not conducive to the overall promotion and use.

[0006] Therefore, this utility model introduces an emergency device for the collapse of the arch of a tunnel. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides an emergency device for the collapse of the arch of a mined tunnel. It has the advantages of preventing excessive pressure from causing the lead screw to shift back, and can limit and link the lead screw, thus solving the problems mentioned in the background technology.

[0008] This utility model provides the following technical solution: an emergency device for the collapse of the arch of a mined tunnel, comprising a fixing plate, wherein a limiting mechanism is provided on the upper surface of the fixing plate, the limiting mechanism comprising a screw, a fixing rod and a receiving plate, one end of the screw being rotatably sleeved with the inside of the fixing plate, the inside of the fixing rod being threadedly connected to the outer surface of the screw, the inner ring of the receiving plate being fixedly installed with the outer surface of the fixing rod, a second connecting groove being provided inside the fixing plate, and a first connecting groove being provided inside the receiving plate, the positions of the first connecting groove and the second connecting groove being aligned and the same size.

[0009] Preferably, the fixing plate is provided with a connecting mechanism on both the front and rear sides. The connecting mechanism includes a plug-in block. The front side of the plug-in block is fixedly installed with the back side of the fixing plate. A connecting groove is provided inside the plug-in block. The front side of the fixing plate is provided with a plug-in groove.

[0010] Preferably, a top plate is fixedly installed at one end of the fixing rod, and a grouting port is provided inside the top plate.

[0011] Preferably, a connecting block is fixedly installed at the bottom of the top plate, and a connection port is provided inside the connecting block. The position of the connection port is aligned with the position of the grouting port, and the connection port and the grouting port are the same size.

[0012] Preferably, the interior of the insertion slot coincides with the outer surface of the insertion block, and the size of the third connection slot is the same as that of the second connection slot, and the position of the third connection slot is aligned with the position of another set of first connection slots.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This type of emergency device for the collapse of the tunnel arch can be used by threaded engagement of screws and fixing rods to quickly adjust the jacking height, allowing the roof to quickly press against the collapsed surface, forming immediate support, preventing further expansion of the collapse, and ensuring construction safety. By aligning the connecting groove one on the receiving plate with the connecting groove two on the fixing plate, external reinforcing rods can be inserted to enhance overall stability and prevent lateral instability of the support structure. This solves the problem of how to coordinate the operation between the splices during height adjustment, achieving a more stable effect during jacking, avoiding the occurrence of backsliding, and improving the overall stability during use.

[0015] 2. This type of emergency device for the collapse of the arch of a mined tunnel features multiple fixed plates that can be quickly spliced ​​together through the matching design of the plug-in blocks and plug-in slots to form a continuous support system. This significantly improves the efficiency of emergency support construction and is suitable for collapse rescue of different scales. The third connecting slot is the same size as the second connecting slot and is aligned with the first connecting slot of the adjacent fixed plate, ensuring that the external reinforcing rod can penetrate through multiple fixed plates to form a stable overall support structure. This prevents uneven local stress from causing support failure and solves the problem of how to splice and use the device more quickly. It can achieve a more convenient effect when using the device, which helps to reduce the complexity of use and facilitates its overall promotion and use. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a bottom view of the structure of this utility model as shown in Figure 1;

[0018] Figure 3 is a schematic diagram of the limiting mechanism structure of Figure 1 of this utility model;

[0019] Figure 4 is a partial structural schematic diagram of the present invention as shown in Figure 1.

[0020] In the diagram: 1. Fixing plate; 2. Screw; 3. Fixing rod; 4. Top plate; 5. Grouting port; 6. Connecting block; 7. Support plate; 8. Connecting groove one; 9. Connecting groove two; 10. Insertion groove; 11. Insertion block; 12. Connecting groove three; 13. Connection port. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are considered to belong to the present utility model.

[0022] The scope of protection of the utility model.

[0023] Please refer to Figure 3. An emergency device for the collapse of the arch of a mined tunnel includes a fixing plate 1. The upper surface of the fixing plate 1 is provided with a limiting mechanism, which includes a screw 2, a fixing rod 3, and a receiving plate 7. One end of the screw 2 is rotatably sleeved with the inside of the fixing plate 1. The inside of the fixing rod 3 is threadedly connected to the outer surface of the screw 2. The inner ring of the receiving plate 7 is fixedly installed with the outer surface of the fixing rod 3. A second connecting groove 9 is opened inside the fixing plate 1, and a first connecting groove 8 is opened inside the receiving plate 7. The position of the first connecting groove 8 is aligned with the position of the second connecting groove 9, and they are the same size.

[0024] Specifically, by rotating screw 2, fixing rod 3 can move up and down along screw 2, thereby adjusting the height of support plate 7. In emergency handling of tunnel arch collapse, different collapse situations and tunnel structures have different requirements for support height. This adjustability can flexibly adapt to various actual scenarios, provide a suitable support height for the collapsed area, effectively support the arch, and prevent further collapse. The fixing plate 1 has a second connecting groove 9 inside, and the support plate 7 has a first connecting groove 8 inside. The first connecting groove 8 and the second connecting groove 9 are aligned in position and the same size, which links the limiting and splicing of screw 2 to achieve a more stable operation.

[0025] Please refer to Figure 4. The front and rear sides of the fixing plate 1 are provided with connecting mechanisms. The connecting mechanism includes a plug block 11. The front of the plug block 11 is fixedly installed on the back of the fixing plate 1. The plug block 11 has a connecting groove 12 inside. The front of the fixing plate 1 has a plug groove 10. The inside of the plug groove 10 coincides with the outer surface of the plug block 11. The size of the connecting groove 12 is the same as the size of the connecting groove 9. The position of the connecting groove 12 is aligned with the position of another set of connecting grooves 8.

[0026] Specifically, the plug-in block 11 of one device can be inserted into the plug-in slot 10 on the front of the fixing plate 1 of another device. Through this plug-in connection method, multiple emergency devices can be quickly connected together. When dealing with large-area collapse of the tunnel arch, they can be quickly spliced ​​into a continuous support or protection system to effectively cover and support the collapsed area in a timely manner, thereby improving the speed and efficiency of emergency response. The size of the connecting slot 3 12 inside the plug-in block 11 is the same as the size of the connecting slot 2 9 inside the fixing plate 1, and the position of the connecting slot 3 12 is aligned with the position of the connecting slot 1 8 inside another set of receiving plates 7, which facilitates the further connection of multiple devices into a whole and ensures the continuity and consistency of the entire support or protection system.

[0027] Please refer to Figures 1 and 2. A top plate 4 is fixedly installed at one end of the fixing rod 3. A grouting port 5 is opened inside the top plate 4. A connecting block 6 is fixedly installed at the bottom of the top plate 4. A connection port 13 is opened inside the connecting block 6. The position of the connection port 13 is aligned with the position of the grouting port 5, and the connection port 13 and the grouting port 5 are the same size.

[0028] Specifically, the top plate 4 is fixedly installed at one end of the fixing rod 3. As a component that directly contacts the tunnel arch, the top plate 4 increases the contact area with the arch, which can more evenly distribute the pressure from the arch and improve the stability and reliability of the support. Since the grouting port 5 and the connection port 13 are aligned and the same size, the grout can smoothly enter the area to be reinforced from the grouting port 5 through the connection port 13 during grouting, reducing the resistance of the grout during transportation and improving the grouting efficiency.

[0029] Working principle: When the tunnel arch collapses, the fixing plate 1 is first pressed tightly against the side wall of the collapsed area. It is then quickly spliced ​​with the insertion slot 10 of the adjacent fixing plate 1 through the insertion block 11, so that multiple sets of devices are connected laterally to form an overall support frame. Then, the screw 2 is rotated, so that the fixing rod 3 moves up and down along the thread of the screw 2, driving the top plate 4 to rise until it is pressed tightly against the collapsed surface. The receiving plate 7 is inserted into the corresponding holes of the connecting slot 1 8 and the connecting slot 2 9 to achieve longitudinal fixation, so that the longitudinal fixation and the lateral fixation can be used in conjunction, further improving the stability during use. Afterwards, quick-setting grout is injected into the collapsed voids through the grouting port 5 of the top plate 4 and the connecting port 13 of the connecting block 6. The grout spreads and fills the cracks, effectively controlling the further development of the collapse.

[0030] It should be noted that the electrical components and equipment mentioned above all use external power sources. The circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art and need not be elaborated upon. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0031] In addition, throughout this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. An emergency device for vault collapse in tunneling, characterized in that: The device includes a fixing plate (1), and a limiting mechanism is provided on the upper surface of the fixing plate (1). The limiting mechanism includes a screw (2), a fixing rod (3), and a receiving plate (7). One end of the screw (2) is rotatedly sleeved with the inside of the fixing plate (1). The inside of the fixing rod (3) is threadedly connected to the outer surface of the screw (2). The inner ring of the receiving plate (7) is fixedly installed with the outer surface of the fixing rod (3). A second connecting groove (9) is provided inside the fixing plate (1), and a first connecting groove (8) is provided inside the receiving plate (7). The position of the first connecting groove (8) is aligned with the position of the second connecting groove (9), and they are the same size.

2. The emergency device for vault collapse in tunneling according to claim 1, wherein: The front and rear sides of the fixing plate (1) are provided with connecting mechanisms. The connecting mechanism includes a plug block (11). The front side of the plug block (11) is fixedly installed with the back side of the fixing plate (1). The plug block (11) has a connecting groove (12) inside. The front side of the fixing plate (1) has a plug groove (10). ​ 3. The emergency device for vault collapse in tunneling according to claim 1, wherein: One end of the fixing rod (3) is fixedly installed with a top plate (4), and the top plate (4) has a grouting port (5) inside. ​ 4. The emergency device for vault collapse in tunneling according to claim 3, wherein: A connecting block (6) is fixedly installed at the bottom of the top plate (4). A connecting port (13) is provided inside the connecting block (6), and the position of the connecting port (13) is aligned with the position of the grouting port (5). The size of the connecting port (13) and the grouting port (5) are the same. ​ 5. The emergency device for vault collapse in tunneling according to claim 2, wherein: The interior of the plug slot (10) overlaps with the outer surface of the plug block (11), and the size of the third connecting slot (12) is the same as that of the second connecting slot (9). The position of the third connecting slot (12) is aligned with the position of another set of connecting slots (8). ​

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