A movable temporary flood prevention door for drill and blast tunnel

Abstract

The application discloses a kind of drill and blast method tunnel movable temporary flood prevention door, including for being installed in secondary lining trolley and being arranged in the end of secondary lining trolley away from the face of flood prevention door, flood prevention door includes main frame, door body and sealing mechanism;Main frame is used to be installed in secondary lining trolley, the outside of main frame is covered with end face sealing plate, the side end face of end face sealing plate opposite to main frame is used to be adapted with secondary lining end face;Door body is movably arranged in main frame, to be able to be moved to be opened state, for the passage of construction transport vehicle;Sealing mechanism includes sealing part, one end of sealing part is radially movably installed in the outer end of end face sealing plate, the other end is used to be able to be moved to be attached with secondary lining end face, to seal the gap between end face sealing plate and secondary lining;In this way, not only can the flood prevention effect of drill and blast method tunnel movable temporary flood prevention door be improved;The complexity of manufacturing process is also reduced, and it is easier to install.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel engineering, and particularly relates to a mobile temporary flood prevention door for a drill-and-blast tunnel. BACKGROUND

[0002] When a drill-and-blast tunnel passes through a weathered groove (pocket), especially an underwater drill-and-blast tunnel, the overlying strata are relatively broken, and once the construction process is disturbed greatly, the high water pressure at the top of the tunnel is easy to break through the tunnel cover layer, thereby causing the risk of collapse, water inrush and mud gushing. At present, the common method is to set a temporary flood prevention door in a section with relatively good geological conditions before excavating a tensile fault fracture zone and other unfavorable geological sections where water inrush may occur. The flood prevention door is used when the tunnel passes through a dangerous section, and can be removed after the support structure is constructed, and is prepared for recycling in the next unfavorable section after being repaired.

[0003] The conventional temporary flood prevention door in a tunnel can be constructed in two ways. One is to reserve a section of the surrounding rock protruding into the tunnel, and the flood prevention door is directly anchored to the surrounding rock. After the tunnel passes through a high-risk section, the reserved surrounding rock is excavated and a lining structure is constructed. This way, the flood prevention door has a small structure size, and the installation and removal do not affect the tunnel structure. However, the flood prevention door needs to be cast with a concrete door frame before installation (the steel door cannot be installed tightly against the surrounding rock), and the surrounding rock of the flood prevention door section needs to be excavated again and the support structure needs to be constructed after the flood prevention door and the door frame are removed, which is a complex process. The other way is to normally excavate and support the tunnel section, and the flood prevention door is directly anchored to the secondary lining structure. This way does not need to reserve surrounding rock, and does not need to excavate and blast again after removing the flood prevention door. However, the flood prevention door has a large structure size (the total area of the fixed part of the flood prevention door and the door hole is equal to the inner contour area of the secondary lining), and needs to be anchored to the secondary lining, which has a certain impact on the lining structure, and the installation and removal are time-consuming and laborious. SUMMARY

[0004] Since the conventional flood prevention door does not have mobility, its setting position and effectiveness depend strongly on the accuracy of geological prediction (if the actual weathered groove is significantly different from the prediction, the pre-set flood prevention door cannot play a role). At the same time, since the distribution of groundwater has a certain randomness, if the distance between the setting position of the flood prevention door and the water inrush position is too large, the effectiveness of the flood prevention door will also be affected. In addition, the conventional flood prevention door needs additional process planning, and its setting position and number will affect the overall construction of the project.

[0005] The main purpose of the present application is to provide a mobile temporary flood prevention door for a drill-and-blast tunnel, which aims to solve the problems of complex manufacturing process, difficult disassembly and assembly, and easy influence of external factors on the flood prevention effectiveness of the existing temporary flood prevention door.

[0006] To achieve the above object, the present application provides a kind of drill and blast method tunnel movable temporary floodgate, the drill and blast method tunnel movable temporary floodgate includes floodgate, the floodgate is used to install in secondary lining trolley, and it is located at the end of the secondary lining trolley away from the end face of the secondary lining trolley, the floodgate includes:

[0007] Main body frame, for installing in the secondary lining trolley, the outer side of the main body frame is covered with end face sealing plate, and the side end face of the end face sealing plate opposite to the main body frame is used to adapt to the end face of secondary lining;

[0008] Door body, movably set in the main body frame, can be moved to open state, for the construction transport vehicle to pass through;And,

[0009] Sealing mechanism, including sealing part, one end of the sealing part is radially movably installed in the outer end of the end face sealing plate, and the other end is used to be movably connected with the end face of the secondary lining, to seal the gap between the end face sealing plate and the secondary lining.

[0010] Optionally, the outer end of the end face sealing plate is provided with a plurality of mounting grooves, and a plurality of the mounting grooves are arranged side by side along the circumference of the end face sealing plate;

[0011] The sealing mechanism includes a plurality of sealing blocks, and a plurality of the sealing blocks correspond to a plurality of the mounting grooves one by one, one end of each sealing block is radially movably installed in the corresponding mounting groove;

[0012] Among them, the sealing part includes a plurality of sealing blocks.

[0013] Optionally, the drill and blast method tunnel movable temporary floodgate further includes a sealing drive assembly, the sealing drive assembly includes a sealing drive part that can move radially, and the sealing drive part is used to drive a plurality of the sealing blocks respectively.

[0014] Optionally, the sealing drive assembly includes a plurality of jacks, and a plurality of the jacks are arranged corresponding to a plurality of the mounting grooves respectively, the seat body of each jack is arranged on the bottom wall of the mounting groove, and the top rod of the jack is arranged towards the slot of the mounting groove, so as to extend from the slot of the mounting groove and drive the corresponding sealing block.

[0015] Among them, the sealing drive part includes a plurality of the top rods of a plurality of the jacks.

[0016] Optionally, the sealing block is provided with an elastic sealing pad on the side end face thereof towards the end face of the secondary lining.

[0017] Optionally, the drill-and-blast tunnel mobile temporary flood prevention door further comprises a blocking mechanism, which is arranged on the secondary lining trolley and arranged on the end of the secondary lining trolley close to the tunnel face, and the blocking mechanism comprises a movable blocking part, and on the movable stroke of the blocking part, the blocking part has a blocking position for blocking and fixing with the secondary lining end face, and a release position separated from the secondary lining end face.

[0018] Optionally, the blocking mechanism comprises a plurality of blocking blocks, and the plurality of blocking blocks are arranged side by side and spaced along the circumference of the end face sealing plate, and each blocking block is arranged on the end of the secondary lining trolley in the axial direction of the end face sealing plate, so as to be capable of switching between the blocking position and the release position.

[0019] Optionally, the drill-and-blast tunnel mobile temporary flood prevention door further comprises a waterproof sealing strip, which is arranged on the circumferential side of the door body, so as to seal the door body and the main frame.

[0020] Optionally, the drill-and-blast tunnel mobile temporary flood prevention door further comprises a walking mechanism, which comprises a pulley and a slide rail in rolling cooperation, the slide rail is arranged on the tunnel ground, and the pulley is correspondingly arranged on the bottom of the end face sealing plate.

[0021] Optionally, the bottom of the end face sealing plate is provided with an avoiding groove, and the avoiding groove is arranged through in the extension direction of the slide rail, so as to accommodate the slide rail.

[0022] The pulley is rotatably arranged on the bottom wall of the avoiding groove in the radial direction of the end face sealing plate.

[0023] The technical scheme of the present application, the drill and blast tunnel mobile temporary floodgate is used for installing on the secondary lining trolley, that is to say, the floodgate is integrated on the secondary lining trolley, so that the floodgate only needs to be installed once, compared with the floodgate of the prior art, it does not need to be installed and disassembled multiple times, and no additional construction process and abandoned project are generated, which has certain economy; at the same time, the floodgate can move with the secondary lining trolley, so it has mobility, which reduces the dependence of the floodgate on the accuracy of geological prospecting prediction, so that the drill and blast tunnel mobile temporary floodgate can be used at any time, and the safety of the drill and blast tunnel mobile temporary floodgate is improved; moreover, the flood prevention effect of the drill and blast tunnel mobile temporary floodgate can be improved; furthermore, the floodgate comprises a main frame, a door body and a sealing mechanism; in this way, the floodgate has a simple structure, which not only reduces the complexity of the manufacturing process, but also makes the drill and blast tunnel mobile temporary floodgate easy to install; the main frame is used for installing on the secondary lining trolley, which improves the installation stability of the floodgate; the outer side of the main frame is covered with an end face sealing plate, one side end face of the end face sealing plate opposite to the main frame is used for adapting to the secondary lining end face, so that the movement of the drill and blast tunnel mobile temporary floodgate is more convenient, and the flood prevention effect of the drill and blast tunnel mobile temporary floodgate can be further improved; the door body is movably arranged on the main frame, so that the floodgate can realize the purpose of passing the construction transport vehicle; the sealing part is movably arranged at the outer end of the end face sealing plate, during the movement of the drill and blast tunnel mobile temporary floodgate with the secondary lining trolley, the sealing part is moved to make the other end thereof abut the outer end of the end face sealing plate, at this time, there is a gap between the outer side of the floodgate and the secondary lining end face, and the drill and blast tunnel mobile temporary floodgate can move more smoothly; after the drill and blast tunnel mobile temporary floodgate moves to the predetermined position, the sealing part is moved to make the other end thereof abut the secondary lining end face, so as to seal the gap between the end face sealing plate and the secondary lining, thereby further improving the flood prevention effect of the drill and blast tunnel mobile temporary floodgate. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings from the structures shown in the drawings without creating any creative labor.

[0025] Figure 1 The structure diagram of an embodiment of the drill and blast tunnel mobile temporary floodgate provided by the present application;

[0026] Figure 2 for Figure 1 A schematic diagram of the installation of a mobile temporary floodgate on a secondary lining trolley in a drill-and-blast tunnel.

[0027] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the image;

[0028] Figure 4 for Figure 1 A schematic diagram of a mobile temporary floodgate installed on a secondary lining trolley (from another angle) in a drill-and-blast tunnel.

[0029] Figure 5 for Figure 1 A schematic diagram of the structure of a mobile temporary floodgate for tunnels constructed using the drill-and-blast method (from another angle);

[0030] Figure 6 for Figure 5 A magnified schematic diagram of part B in the image;

[0031] Figure 7 for Figure 1 A schematic diagram of the walking mechanism in the diagram;

[0032] Figure 8 for Figure 1 A schematic diagram of the sealing gate in the diagram.

[0033] Explanation of reference numerals in the accompanying drawings of the embodiments provided in this invention:

[0034] Reference Name Reference Name 100 Drilling and blasting tunnel movable temporary flood prevention door 42 Sealing drive assembly 1 Main body frame 421 Jack 2 End face sealing plate 5 Stop mechanism 21 Mounting groove 51 Stop block 22 Avoidance groove 52 Rotary sleeve 3 Door body 6 Waterproof sealing strip 4 Sealing mechanism 7 Traveling mechanism 41 Sealing part 71 Pulley 411 Sealing block 71 Slide rail 4111 Sealing steel plate 8 Reserved hole 4112 Connecting plate 9 Sealing gate plate 412 Elastic sealing gasket 200 Secondary lining trolley 413 Sealing gasket 300 Secondary lining end face

[0035] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention 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 invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0038] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0039] When the drill and blast tunnel passes through the weathered groove (capsule), especially the underwater drill and blast tunnel, because the overlying rock is relatively broken, once the disturbance in the construction process is large, the high water pressure at the top of the tunnel is easy to break through the tunnel cover layer, thereby the risk of collapse, water inrush and mud gushing. The common method at present is to set up a temporary flood prevention door in the section with relatively good geological conditions before excavating the tensional fault fracture zone and other unfavorable geological sections where water inrush may occur.

[0040] The conventional temporary flood prevention door in the tunnel can be divided into two ways: one is to reserve a section of the surrounding rock protruding into the tunnel, and the flood prevention door is directly anchored on the surrounding rock. After the tunnel passes through the high-risk section, the reserved part of the surrounding rock is excavated and the lining structure is constructed. This way, the flood prevention door structure is small, and the installation and removal do not affect the tunnel structure, but the flood prevention door needs to be poured with a concrete door frame before installation (the steel door cannot be installed tightly with the surrounding rock). After the flood prevention door and the door frame are removed, the surrounding rock of the flood prevention door section needs to be excavated again, and the supporting structure construction is needed, which is a complex process. The other way is to excavate and support the tunnel section normally, and the flood prevention door is directly anchored on the secondary lining structure. This way does not need to reserve the surrounding rock, and does not need to excavate and blast again after removing the flood prevention door, but the flood prevention door structure is large (the total area of the fixed part and the door hole of the flood prevention door is equal to the inner contour area of the secondary lining), and needs to be anchored on the secondary lining, which has a certain influence on the lining structure, and the installation and removal are time-consuming and laborious.

[0041] In view of this, the present application provides a mobile temporary flood prevention door for drill and blast tunnel. Figures 1 to 8 The present application provides a mobile temporary flood prevention door for drill and blast tunnel.

[0042] Please refer to Figure 1 and Figure 2The drill-and-blast tunnel mobile temporary flood prevention door 100 comprises a flood prevention door for being installed on a secondary lining trolley 200 and arranged at an end of the secondary lining trolley 200 away from a working face, and comprises a main frame 1, a door body 3 and a sealing mechanism 4; the main frame 1 is used for being installed on the secondary lining trolley 200, and an outer side of the main frame 1 is covered with an end face sealing plate 2, and a side end face of the end face sealing plate 2 away from the main frame 1 is used for being adapted to a secondary lining end face 300; the door body 3 is movably arranged on the main frame 1 and can be moved to an open state for passing of a construction transport vehicle; the sealing mechanism 4 comprises a sealing part 41, one end of the sealing part 41 is movably installed on an outer end of the end face sealing plate 2 in a radial direction, and the other end is used for being movably connected to the secondary lining end face 300 to seal a gap between the end face sealing plate 2 and the secondary lining end face 300.

[0043] In the technical scheme of the present application, the drill-and-blast tunnel mobile temporary flood prevention door 100 is used to be installed on the secondary lining trolley 200, that is, the drill-and-blast tunnel mobile temporary flood prevention door 100 is integrated on the secondary lining trolley 200, so that the drill-and-blast tunnel mobile temporary flood prevention door 100 only needs to be installed once, compared with the flood prevention door in the prior art, without the need for multiple installations and dismounting, without additional construction procedures and abandoned projects, and with certain economy; at the same time, the drill-and-blast tunnel mobile temporary flood prevention door 100 can move with the secondary lining trolley 200, so it has mobility, reducing the dependence of the drill-and-blast tunnel mobile temporary flood prevention door 100 on the accuracy of geological prospecting prediction, so that the drill-and-blast tunnel mobile temporary flood prevention door 100 can be used at any time, improving the safety of the drill-and-blast tunnel mobile temporary flood prevention door 100; moreover, the flood prevention effect of the drill-and-blast tunnel mobile temporary flood prevention door 100 can be improved; furthermore, the drill-and-blast tunnel mobile temporary flood prevention door 100 comprises a main frame 1, a door body 3 and a sealing mechanism 4; in this way, the drill-and-blast tunnel mobile temporary flood prevention door 100 has a simple structure, which not only reduces the complexity of the manufacturing process, but also makes the drill-and-blast tunnel mobile temporary flood prevention door 100 easy to install; the main frame 1 is used to be installed on the secondary lining trolley 200, improving the installation stability of the drill-and-blast tunnel mobile temporary flood prevention door 100; the end face sealing plate 2 is wrapped outside the main frame 1, and the side end face of the end face sealing plate 2 opposite to the main frame 1 is used to be adapted to the secondary lining end face 300, so that the movement of the drill-and-blast tunnel mobile temporary flood prevention door 100 is more convenient, and the flood prevention effect of the drill-and-blast tunnel mobile temporary flood prevention door 100 can be further improved; the door body 3 is movably arranged on the main frame 1, so that the drill-and-blast tunnel mobile temporary flood prevention door 100 can realize the purpose of passing construction transport vehicles; the sealing part 41 is movably arranged at the outer end of the end face sealing plate 2, and in the process of moving the drill-and-blast tunnel mobile temporary flood prevention door 100 with the secondary lining trolley 200, the sealing part 41 is moved to make the other end thereof abut the outer end of the end face sealing plate 2, at this time, there is a gap between the outer side of the drill-and-blast tunnel mobile temporary flood prevention door 100 and the secondary lining end face 300, and the drill-and-blast tunnel mobile temporary flood prevention door 100 can move more smoothly; after the secondary lining trolley 200 is moved into position, if there is a risk of water inrush in the working face, the sealing part 41 is moved to make the other end thereof movable to abut the secondary lining end face 300, so as to seal the gap between the end face sealing plate 2 and the secondary lining, thereby further improving the flood prevention effect of the drill-and-blast tunnel mobile temporary flood prevention door 100.

[0044] It should be noted that the door body 3 is in a normally open state during normal construction process, and is moved to a closed state in case of emergency to achieve the purpose of flood prevention.

[0045] Meanwhile, the material of the door body 3 is not limited, and in this embodiment, the material of the door body 3 is a steel structure, so that the strength and stability of the drill and blast tunnel movable temporary flood prevention door 100 can be improved.

[0046] Furthermore, referring to Figure 4 , the door body 3 adopts a two-door opposite opening installation mode, and the size of the door leaf needs to meet the traffic demand of construction transport vehicles, and the height and total width of the door body 3 are generally not less than 4m.

[0047] In the present application, a plurality of reserved holes 8 are provided on the end face sealing plate 2 to pass the pipes for wind, water and electricity, so as to bring convenience to construction.

[0048] Meanwhile, the drill and blast tunnel movable temporary flood prevention door 100 further comprises a waterproof sealing strip 6, which is arranged on the peripheral side of the door body 3 to seal the door body 3 and the main frame 1, so as to further improve the sealing property of the drill and blast tunnel movable temporary flood prevention door 100.

[0049] Specifically, referring to Figure 2 and Figure 3 , a plurality of installation grooves 21 are formed on the outer end of the end face sealing plate 2, and the plurality of installation grooves 21 are arranged side by side along the circumference of the end face sealing plate 2; the sealing mechanism 4 comprises a plurality of sealing blocks 411, and the plurality of sealing blocks 411 correspond to the plurality of installation grooves 21 one by one, and one end of each sealing block 411 is movably installed in the corresponding installation groove 21 along the radial direction; wherein the sealing part 41 comprises a plurality of sealing blocks 411; in this way, the drill and blast tunnel movable temporary flood prevention door 100 has a compact structure, and the occupied space of the drill and blast tunnel movable temporary flood prevention door 100 is reduced.

[0050] More specifically, the drill and blast tunnel movable temporary flood prevention door 100 further comprises a sealing driving assembly 42, and the sealing driving assembly 42 comprises a sealing driving part which can move radially, and the sealing driving part is used to drive a plurality of sealing blocks 411 respectively; in this way, the structure is simple, the operation is simple, and the cost is low.

[0051] It should be noted that the present application does not limit the specific form of the sealing drive assembly 42, specifically, in the present embodiment, the sealing drive assembly 42 comprises a plurality of jacks 421, and the plurality of jacks 421 are respectively arranged corresponding to the plurality of mounting grooves 21, the seat body of each jack 421 is arranged on the bottom wall of the mounting groove 21, and the top rod thereof is arranged towards the slot of the mounting groove 21, so as to be extended from the slot of the mounting groove 21 and drive the corresponding sealing block 411; wherein the sealing drive part comprises a plurality of top rods of the plurality of jacks 421; in the present embodiment, the seat body of each jack 421 is arranged on the bottom wall of the mounting groove 21, and the top rod thereof is arranged towards the slot of the mounting groove 21, so that the driving effect of the sealing drive part can be realized, and the mounting structure of the sealing drive assembly 42 can be more compact, thereby reducing the occupied space of the drill and blast tunnel movable temporary flood prevention door 100.

[0052] In the present embodiment, the sealing block 411 is arranged with an elastic sealing gasket 412 on the side end face thereof facing the secondary lining end face 300; in this way, the elastic sealing gasket 412 can improve the flood prevention effect of the drill and blast tunnel movable temporary flood prevention door 100.

[0053] Further referring to Figure 3 , the sealing block 411 comprises a sealing steel plate 4111 and a connecting plate 4112, the connecting plate 4112 is arranged on the side end face of the sealing steel plate 4111 opposite to the secondary lining end face 300, the connecting plate 4112 is slidingly installed in the mounting groove 21 and can move in the radial direction, and a sealing gasket 413 is arranged between the two opposite surfaces of the connecting plate 4112 and the mounting groove 21; in this way, the sealing property of the drill and blast tunnel movable temporary flood prevention door 100 can be improved, thereby improving the flood prevention effect of the drill and blast tunnel movable temporary flood prevention door 100.

[0054] In order to prevent the secondary lining trolley 200 and the drill and blast tunnel movable temporary flood prevention door 100 from being pushed under the action of water pressure, in the present application, please refer to Figures 5 to 6The drill-and-blast tunnel mobile temporary flood prevention door 100 further comprises a blocking mechanism 5 arranged on the secondary lining trolley 200 and arranged on the end of the secondary lining trolley 200 close to the tunnel face, the blocking mechanism 5 comprises a movable blocking part, and on the movable stroke of the blocking part, the blocking part has a blocking position for blocking and fixing with the secondary lining end face 300 and a release position separated from the secondary lining end face 300; that is, during the movement of the secondary lining trolley 200, the blocking part is moved to the release position, at this time, the blocking part is separated from the secondary lining end face 300, and the drill-and-blast tunnel mobile temporary flood prevention door 100 can move freely; when the secondary lining trolley 200 is moved to the position, the blocking part is moved to the blocking position, at this time, the blocking part is blocked and fixed with the secondary lining end face 300; in this way, the structure is simple and the operation is simple.

[0055] It should be noted that the specific form of the blocking part is not limited in the present application; an arc-shaped baffle and a plurality of blocking blocks are arranged on one side end face of the end face sealing plate 2, the arc-shaped baffle extends along the circumference of the end face sealing plate 2, a plurality of accommodating grooves are arranged on the top of the arc-shaped baffle, and the plurality of accommodating grooves are arranged at intervals along the circumference of the end face sealing plate 2; a plurality of the blocking blocks are movably installed in the accommodating grooves in the radial direction; during the movement of the secondary lining trolley 200, the blocking blocks are moved into the accommodating grooves, and the drill-and-blast tunnel mobile temporary flood prevention door 100 can move freely; when the secondary lining trolley 200 is moved to the position, the blocking blocks are moved to be blocked and fixed with the secondary lining end face 300; the blocking part comprises a plurality of the blocking blocks.

[0056] Specifically, in the present embodiment, the blocking mechanism 5 comprises a plurality of blocking blocks 51, the plurality of blocking blocks 51 are arranged side by side at intervals along the circumference of the end face sealing plate 2, each blocking block 51 is rotatably installed on the end of the secondary lining trolley 200 along the axial direction of the end face sealing plate 2, and is used to switch between the blocking position and the release position; in this way, the structure is simple and the operation is simple.

[0057] It should be noted that in the present application, the drill-and-blast tunnel mobile temporary flood prevention door 100 further comprises a blocking driving assembly, the blocking driving assembly comprises a blocking driving part rotatable along the axial direction of the end face sealing plate 2, and the blocking driving part is used to drive a plurality of the blocking blocks 51 respectively; in this way, the movement of a plurality of the blocking blocks 51 is realized.

[0058] In order to make the movement of the drill-and-blast tunnel mobile temporary flood prevention door 100 more smooth, in the present application, please refer to Figure 7The drill-and-blast tunnel mobile temporary flood prevention door 100 further comprises a walking mechanism 7, which comprises a rolling matched pulley 71 and a slide rail 72, the slide rail 72 is arranged on the tunnel ground, and the pulley 71 is arranged at the bottom of the end face sealing plate 2. Through the arrangement of the rolling matched pulley 71 and the slide rail 72, the structure is simple and easy to construct, and the movement of the drill-and-blast tunnel mobile temporary flood prevention door 100 is more smooth.

[0059] In order to make the installation structure of the drill-and-blast tunnel mobile temporary flood prevention door 100 more compact, in the embodiment, the bottom of the end face sealing plate 2 is provided with an avoiding groove 22, which is arranged through in the extension direction of the slide rail 72, used to contain the slide rail 72; the pulley 71 is rotatably installed on the bottom wall of the avoiding groove 22 along the radial direction of the end face sealing plate 2; by arranging the avoiding groove 22 at the bottom of the end face sealing plate 2, the slide rail 72 can be partially contained in the avoiding groove 22, so that the installation between the drill-and-blast tunnel mobile temporary flood prevention door 100 and the tunnel ground is more compact, thereby reducing the occupied space of the drill-and-blast tunnel mobile temporary flood prevention door 100 in the tunnel.

[0060] It should be noted that in the embodiment, referring to Figure 7 and Figure 8 , the slide rail 72 comprises a first rail section and a second rail section, the first rail section is used to be fixed on the tunnel ground, and the second rail section is arranged at a predetermined position and can be detachably installed on the tunnel ground; a sealing gate 9 is arranged at the bottom of the end face sealing plate 2 and corresponds to the avoiding groove 22, the sealing gate 9 is movably arranged, so as to be able to move to cover the avoiding groove 22 and open the avoiding groove 22; during the movement of the secondary lining trolley 200, the sealing gate 9 is moved to open the avoiding groove 22; after the secondary lining trolley 200 is moved to the position, the second rail section is removed from the tunnel ground, the sealing gate 9 is moved to cover the avoiding groove 22, and the flood prevention effect of the drill-and-blast tunnel mobile temporary flood prevention door 100 is realized.

[0061] The application does not limit the specific installation mode of the sealing gate 9. The sealing gate 9 can be detachably installed on the end face sealing plate 2. During the movement of the secondary lining trolley 200, the sealing gate 9 is detached, and after the secondary lining trolley 200 is moved to the position, the sealing gate 9 is installed to cover the avoiding groove 22, so that the anti-flooding effect of the drill-and-blast tunnel movable temporary anti-flooding door 100 is realized. The sealing gate 9 can also be slidably installed on the end face sealing plate 2. During the movement of the secondary lining trolley 200, the sealing gate 9 is slid to open the avoiding groove 22, and after the secondary lining trolley 200 is moved to the position, the sealing gate 9 is slid to cover the avoiding groove 22, so that the anti-flooding effect of the drill-and-blast tunnel movable temporary anti-flooding door 100 is realized. In this way, the structure is simple, the operation is simple, and the cost is low.

[0062] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the concept of the application, using the content of the application specification and drawings, is included in the patent protection scope of the application.

Claims

1. A mobile temporary flood prevention door for drill and blast tunneling, characterized in that, The drill-and-blast tunnel mobile temporary flood prevention door comprises a flood prevention door, which is arranged on a secondary lining trolley and at an end of the secondary lining trolley away from a tunnel face, and comprises: a main frame arranged on the secondary lining trolley, an outer side of the main frame being covered with an end face sealing plate, and a side end face of the end face sealing plate away from the main frame being adapted to a secondary lining end face; a door body movably arranged on the main frame and capable of being moved to an open state to allow a construction transport vehicle to pass through; and a sealing mechanism comprising a sealing part, one end of the sealing part being movably arranged on an outer end of the end face sealing plate in a radial direction, and the other end being capable of being moved to abut the secondary lining end face to seal a gap between the end face sealing plate and the secondary lining; a plurality of mounting grooves are formed on the outer end of the end face sealing plate and arranged side by side in a circumferential direction of the end face sealing plate; the sealing mechanism comprises a plurality of sealing blocks, and each of the sealing blocks is movably arranged in a corresponding mounting groove in a radial direction; the sealing part comprises the plurality of sealing blocks; the drill-and-blast tunnel mobile temporary flood prevention door further comprises a sealing driving assembly, the sealing driving assembly comprising a sealing driving part capable of moving in a radial direction, and the sealing driving part being used to drive the plurality of sealing blocks respectively; the sealing driving assembly comprises a plurality of jacks, and each of the jacks is arranged corresponding to a mounting groove, a seat body of each of the jacks is arranged on a bottom wall of the mounting groove, and a top rod of each of the jacks is arranged towards a groove opening of the mounting groove to extend from the groove opening and drive a corresponding sealing block; the sealing driving part comprises a plurality of top rods of the plurality of jacks; the sealing block is provided with an elastic sealing gasket on a side end face thereof facing the secondary lining end face; the drill-and-blast tunnel mobile temporary flood prevention door further comprises a blocking mechanism, the blocking mechanism being arranged on the secondary lining trolley and at an end of the secondary lining trolley close to the tunnel face, the blocking mechanism comprising a blocking part movably arranged and having a blocking position for blocking and fixing with the secondary lining end face and a release position for separating from the secondary lining end face in a movement stroke thereof; the blocking mechanism comprises a plurality of blocking blocks, and the plurality of blocking blocks are arranged side by side and spaced apart in a circumferential direction of the end face sealing plate, each of the blocking blocks being rotatably arranged on the end of the secondary lining trolley in an axial direction of the end face sealing plate to be capable of being switched between the blocking position and the release position; the drill-and-blast tunnel mobile temporary flood prevention door further comprises a waterproof sealing strip, the waterproof sealing strip being arranged on a circumferential side of the door body to seal the door body and the main frame; the drill-and-blast tunnel mobile temporary flood prevention door further comprises a walking mechanism, the walking mechanism comprising a pulley and a slide rail in rolling cooperation, the slide rail being arranged on a tunnel ground, and the pulley being arranged corresponding to a bottom of the end face sealing plate. The bottom of the end face sealing plate is provided with an avoiding groove which is arranged through in the extension direction of the slide rail to accommodate the slide rail; The pulley is rotatably installed in the bottom wall of the avoiding groove along the radial direction of the end face sealing plate.

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