A deep jointed rock mass roadway supporting device

Abstract

This invention discloses a support device for deep jointed rock mass roadways, comprising a roadway body with a support device body located at a corner of the roadway body. The support device body includes: multiple support roof plates arranged in a circular array at the corners of the roadway body; multiple support units located at corresponding support roof plate positions, with connecting components between the support units, the support roof plates, and adjacent support units; and multiple auxiliary units, each group having one end attached to a connecting component. The support roof plates are equipped with fixed connectors for use with the auxiliary units. Through the integrated arrangement of the support roof plates, support units, connecting components, and auxiliary units, the entire support device body forms a unified support unit, ensuring the entire structure supports the support roof plates, guaranteeing the stability of the support device, and enabling quick installation and disassembly, while also saving on the cost of high-strength support.

Description

Technical Field

[0001] This invention relates to the field of tunnel support technology, specifically a deep jointed rock mass tunnel support device. Background Technology

[0002] During underground coal mining, numerous roadways are excavated for pedestrian, transportation, and ventilation purposes. Therefore, maintaining the long-term stability of these roadways is a crucial prerequisite for ensuring safe and efficient underground coal mining. Due to geological structures and various external forces, deep rock masses contain numerous joints. Furthermore, mining activities further complicate the roadway environment within these jointed rock masses, frequently leading to surrounding rock instability accidents. This poses a severe challenge to safe coal mine production. Therefore, to ensure the stability and safety of roadways in deep jointed rock masses, support devices are typically installed within the roadways to protect them and prevent collapse.

[0003] Currently, the support devices installed at the corners of deep roadways are all individually supported. Moreover, the rock strata at the corners of roadways undergo complex deformation after excavation to form the roadway, and the joints formed are more numerous and the stress magnitudes are different. Therefore, the individually installed support devices may fail at some point during long-term support. And providing high-strength support for each point would be very costly. To address this, we designed a support device for roadways at the corners of deep jointed rock masses.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a support device for deep jointed rock mass roadways, in order to solve the problem mentioned in the background art that the joints at the corners of deep roadways are more complex, and ordinary support is prone to local damage and failure after long-term use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a deep jointed rock mass roadway support device, comprising a roadway body, wherein a support device body is provided at the corner of the roadway body;

[0007] The main body of the support device includes:

[0008] Multiple support roof plates are arranged in a circular array at the corner of the main tunnel and are attached to the upper wall of the main tunnel.

[0009] Multiple support units are set at corresponding support top plate positions and support the support top plate. Connecting components are provided between the multiple support units, the support top plate, and adjacent support units to connect the support units and the support top plate and connect adjacent support units to form an integral support structure.

[0010] The auxiliary unit is provided in multiple sets. One end of each auxiliary unit is disposed on a connecting component, and the other end is disposed on the support top plate adjacent to the connecting component to form an inclined support. Each set of auxiliary units includes two auxiliary components, and the two auxiliary components are arranged crosswise to form a cross support. The support top plate is provided with a fixed connector for use with the auxiliary components.

[0011] Preferably, the support unit includes two support columns, which are respectively disposed on both sides of the support top plate. The support column is provided with a support base at its bottom, and the support base is connected to the support column by a lifting mechanism.

[0012] Preferably, the support column is provided with multiple socket grooves for adjacent support columns to be connected by a connecting assembly.

[0013] Preferably, the connection component includes:

[0014] The first connector is mounted on the support unit and is used to connect to the support top plate;

[0015] The second connector is used to connect two support columns within the same support unit. It is used to adjust its own length according to the width of the main roadway so that the two support columns and their corresponding support roof plates can be connected to the support columns through the first connector.

[0016] The third connector is used to connect two support columns within adjacent support units. Its length is adjusted according to the turning angle of the main roadway and the distance between two adjacent support roofs to form a connection between adjacent support units.

[0017] Preferably, the first connector includes a connecting base fixedly mounted on the support column, the connecting base having mounting holes and two mounting sleeves, and the support top plate having four mounting rods that are compatible with the mounting sleeves.

[0018] Preferably, the second connector includes two collars fitted onto a sleeve groove on the same set of support columns, each collar having a first threaded rod, and a first threaded sleeve threadedly connecting the two first threaded rods.

[0019] Preferably, the third connector includes a rotating groove disposed on two adjacent collars, each rotating groove being provided with a sliding post, each sliding post being provided with a connecting plate, the connecting plate including a connecting part and a locking part, and the two locking parts being provided with cooperating fixing holes.

[0020] Preferably, the auxiliary component includes a second threaded rod that is ball-jointed on the connecting base, a second threaded sleeve that is threaded to the end of the second threaded rod away from the connecting base, and a fixed connecting member that is threaded to the end of the second threaded sleeve away from the connecting base.

[0021] Preferably, the fixed connector includes a third threaded rod threadedly connected to the second threaded sleeve, a fixing block is ball-jointed at one end of the third threaded rod away from the second threaded sleeve, the fixing block has positioning and fixing holes at both ends, and positioning and fixing posts that cooperate with the positioning and fixing holes are evenly distributed on the support top plate.

[0022] Preferably, one end of the fixing block is provided with a locking block, and the other end of the fixing block is provided with a locking slot for use with the locking block.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This invention, through the overall arrangement of the support plate, support unit, connecting components, and auxiliary units, enables the entire support device to form a support whole, thereby ensuring the stability of the support device and guaranteeing quick installation and disassembly. It also saves the cost of high-strength support. In addition, the diagonal and cross supports formed by the auxiliary components in the auxiliary unit can form a support connection between adjacent support plates and better support the support plates. Thus, when further connecting adjacent support plates to form a more stable overall structure, it can also distribute the stress on adjacent support plates and prevent excessive stress on one support plate from causing support failure.

[0025] 2. By using fixed connectors in conjunction with auxiliary components, the present invention allows the auxiliary unit to form a support point at any position on the supporting top plate. This allows the support point to be set at the joint position with large deformation. Furthermore, the fixed connectors on the same auxiliary unit can be connected and cooperate with each other, thereby enabling the support point to support the joint with even larger deformation. Attached Figure Description

[0026] Figure 1 This is a schematic cross-sectional view of the main body of the support device of the present invention and the main body of the roadway;

[0027] Figure 2 This is a structural diagram of the main body of the support device of the present invention;

[0028] Figure 3 This is a partial bottom view of the main structure of the support device of the present invention;

[0029] Figure 4 This is a schematic diagram showing the connection between the second and third connectors of the present invention;

[0030] Figure 5This is a top view of the support plate of the present invention;

[0031] Figure 6 This is an overall structural diagram of the fixing connector of the present invention;

[0032] Figure 7 This is a diagram showing the interconnection of the fixing blocks of the present invention;

[0033] Figure 8 for Figure 1 Enlarged view of point A in the middle.

[0034] Reference numerals: 1-Main body of the roadway; 2-Main body of the support device; 21-Support roof plate; 22-Support unit; 221-Support column; 222-Support base; 223-Socket groove; 23-Connecting assembly; 231-First connector; 2311-Connecting base; 2312-Mounting hole; 2313-Mounting sleeve; 2314-Mounting rod; 232-Second connector; 2321-Collar; 2322-First threaded rod; 2323-First threaded sleeve; 23 3-Third connecting piece; 2331-Rotating groove; 2332-Sliding column; 2333-Connecting plate; 2334-Connecting part; 2335-Clamping part; 2336-Fixing hole; 24-Auxiliary unit; 25-Auxiliary single piece; 251-Second threaded rod; 252-Second threaded sleeve; 26-Fixing connecting piece; 261-Third threaded rod; 262-Fixing block; 2621-Clamping block; 2622-Clamping groove; 263-Positioning fixing column; 264-Positioning fixing hole. Detailed Implementation

[0035] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-3 The present invention provides a technical solution: a deep jointed rock mass roadway support device, comprising a roadway body 1, wherein a support device body 2 is provided at the corner of the roadway body 1;

[0037] The support device body 2 includes:

[0038] Multiple support roof plates 21 are arranged in a circular array at the corner of the main roadway 1 and are attached to the upper wall of the main roadway 1. The number of support roof plates 21 is related to the size of the corner angle of the main roadway 1 and the spacing between the supports of two adjacent support roof plates 21, i.e. the size of the corner.

[0039] Multiple support units 22 are disposed at corresponding support top plates 21 and support the support top plates 21. Connecting components 23 are provided between the multiple support units 22, the support top plates 21, and adjacent support units 22 to connect the support units 22 and the support top plates 21 and connect adjacent support units 22 to form an integral support structure.

[0040] The auxiliary unit 24 is provided in multiple groups. One end of each auxiliary unit 24 is set on a connecting component 23, and the other end is set on the adjacent support top plate 21 of the connecting component 23 to form a diagonal support. Through this diagonal support, on the one hand, multiple support top plates 21 and support devices can be connected as a whole by multiple diagonal supports, thereby improving the overall stability. On the other hand, through this diagonal support, when one support top plate 21 is subjected to a large force, the force can be distributed to the support unit 22 on another connecting component 23, thereby further improving the support capacity of the support device body 2. Each group of auxiliary units 24 includes two auxiliary single pieces 25, and the two auxiliary single pieces 25 are arranged crosswise to form a cross support. Through this cross support, the auxiliary single pieces 25 can be better connected to the support top plate 21 and the force can be transferred. The support top plate 21 is provided with a fixed connector 26 for use with the auxiliary single pieces 25.

[0041] Please see Figure 2 The support unit 22 includes two support columns 221, which are respectively set on both sides of the support top plate 21. The support column 221 has a support base 222 at its bottom. The support base 222 is connected to the support column 221 by a lifting mechanism. The lifting mechanism can raise the main body 2 of the support device, so that the support top plate 21 and the top of the roadway can come into contact. This facilitates the support after the overall assembly of the device is completed, and also facilitates the early installation and later disassembly. At the same time, it can make the support top plate 21 and the top of the roadway fit more tightly. The lifting mechanism can be set as a lifting cylinder, electric telescopic rod or other mechanism with telescopic function.

[0042] Please see Figure 3 , 8 The support column 221 is provided with a plurality of socket grooves 223 for adjacent support columns 221 to be connected by a connecting component 23.

[0043] Please see Figure 1-4 8. The connection component 23 includes:

[0044] The first connector 231 is disposed on the support unit 22 and is used to connect the support roof 21. Every two sets of support units 22, two sets of first connectors 231 and one support roof 21 constitute a small support device. The number of sets of support units 22 and first connectors 231 is always one more than the number of support roof 21, and is at least two. The specific number of sets is determined by the number of support roof 21 at the corner of the roadway.

[0045] The second connector 232 is used to connect two support columns 221 within the same support unit 22. It is used to adjust its own length according to the width of the roadway body 1 so that the two support columns 221 and their corresponding support roof plates 21 are connected to the support columns 221 through the first connector 231.

[0046] The third connector 233 is used to connect two support columns 221 in adjacent support units 22. It is used to adjust its own length according to the turning angle of the main body of the roadway 1 and the distance between two adjacent support roof plates 21 so that the adjacent support units 22 can be connected, thereby making the whole device a support whole.

[0047] Please see Figure 3 , 8 The first connector 231 includes a connecting base 2311 fixedly mounted on the support column 221. The connecting base 2311 is L-shaped and has a mounting hole 2312. The mounting hole 2312 can be used to fix the connecting base 2311 and the roadway body 1 by setting anchor bolt holes at corresponding positions in the roadway body 1 and passing anchor bolts through the mounting hole 2312. The connecting base 2311 is provided with two mounting sleeves 2313, and the support top plate 21 is provided with four mounting rods 2314. The four mounting rods 2314 and the mounting sleeves 2313 are compatible. In use, the four mounting rods 2314 can be inserted into the mounting sleeves 2313 on two adjacent first connectors 231.

[0048] Please see Figure 3 , 4 8. The second connecting member 232 includes two collars 2321 sleeved on the connecting groove 223 provided on the same set of support columns 221. Each of the two collars 2321 is provided with a first threaded rod 2322. The two first threaded rods 2322 are threadedly connected to a first threaded sleeve 2323. In use, the length of the second connecting member 232 can be adjusted by turning the first threaded sleeve 2323 to adapt to the width of the roadway, i.e. the width of the roof support 21.

[0049] Please see Figure 2 , 34. The third connecting member 233 includes a rotating groove 2331 disposed on two adjacent collars 2321. Each rotating groove 2331 is provided with a sliding column 2332. Each sliding column 2332 is provided with a connecting plate 2333. Each connecting plate 2333 includes a connecting part 2334 and a locking part 2335. The width of the locking part 2335 is half that of the connecting part 2334. The two locking parts 2335 are provided with fixing holes 2336 for mutual use. When the spacing between two adjacent support columns 221 is not the same, the locking parts 2335 on the connecting plate 2333 can be aligned by rotating the sliding column 2332 in the rotating groove 2331. After the fixing holes 2336 on the locking parts 2335 on the two connecting plates 2333 are aligned, they can be fixed by bolts, thereby fixing the adjacent support units 22 to form a support assembly.

[0050] Please see Figure 3 The auxiliary component 25 includes a second threaded rod 251 that is ball-jointed on the connecting base 2311. The end of the second threaded rod 251 away from the connecting base 2311 is threadedly connected to a second threaded sleeve 252. The end of the second threaded sleeve 252 away from the connecting base 2311 is threadedly connected to the fixed connector 26.

[0051] Please see Figure 3 , 5 6. The fixed connector 26 includes a third threaded rod 261 threadedly connected to the second threaded sleeve 252. The third threaded rod 261 is ball-jointed to a fixing block 262 at one end away from the second threaded sleeve 252. The fixing block 262 is provided with positioning and fixing holes 264 at both ends. The support top plate 21 is evenly provided with positioning and fixing posts 263 that cooperate with the positioning and fixing holes 264.

[0052] In order to better support the inner wall of the top plate 21, the fixing block 262 is an appropriate arc shape;

[0053] When installing the auxiliary unit 24, it can be installed after the support unit 22 is completed. The installation method involves first installing the fixing block 262 onto the positioning fixing post 263 through the positioning fixing holes 264 on both sides, and then fixing the fixing block 262 onto the support top plate 21 with nuts. Next, the second threaded sleeve 252 is screwed onto the second threaded rod 251 or the third threaded rod 261. After the second threaded sleeve 252 is screwed into the second threaded rod 251 or the third threaded rod 261, the second threaded sleeve 25... 2. The other end is connected to the third threaded rod 261 or the second threaded rod 251. After the second threaded sleeve 252 is slowly unscrewed, the second threaded sleeve 252 will connect the third threaded rod 261 and the second threaded rod 251, thereby realizing the connection between the auxiliary single piece 25 and the support roof plate 21. The installation position of the fixing block 262 can generally be installed at the location where the support roof plate 21 is under greater stress, that is, at the joint of the main body 1 of the roadway. When the support roof plate 21 is under relatively uniform stress, it can be installed in a uniformly cross-distributed manner.

[0054] Please see Figure 7 One end of the fixing block 262 is provided with a locking block 2621, and the other end of the fixing block 262 is provided with a locking groove 2622 that cooperates with the locking block 2621;

[0055] When the deformation at a certain joint of the support top plate 21 is large, the two fixing blocks 262 can be connected by the locking block 2621 and the locking groove 2622, so that the cross support points on both sides are formed into one point, thereby providing greater support assistance.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply 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.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deep jointed rock mass roadway support device, comprising a roadway body (1), characterized in that: The main body of the roadway (1) is equipped with a support device (2) at the corner; The main body (2) of the support device includes: Multiple support roof plates (21) are arranged in a circular array at the corner of the main body of the roadway (1) and are attached to the upper wall of the main body of the roadway (1); Multiple support units (22) are set at the corresponding support top plate (21) positions and support the support top plate (21). A connecting component (23) is provided between the multiple support units (22), the support top plate (21), and adjacent support units (22) to connect the support units (22) and the support top plate (21) and connect adjacent support units (22) to form an integral support structure. The auxiliary unit (24) is provided in multiple groups. One end of each auxiliary unit (24) is set on a connecting component (23), and the other end is set on the support top plate (21) adjacent to the connecting component (23) to form an inclined support. Each auxiliary unit (24) includes two auxiliary single pieces (25), and the two auxiliary single pieces (25) are arranged crosswise to form a cross support. The support top plate (21) is provided with a fixed connector (26) used in conjunction with the auxiliary single pieces (25).

2. The deep jointed rock mass tunnel support device according to claim 1, characterized in that: The support unit (22) includes two support columns (221), which are respectively set on both sides of the support top plate (21). The support column (221) has a support base (222) at its bottom. The support base (222) is connected to the support column (221) by a lifting mechanism.

3. The deep jointed rock mass tunnel support device according to claim 2, characterized in that: The support column (221) is provided with a plurality of socket grooves (223) for adjacent support columns (221) to be connected by a connecting component (23).

4. A deep jointed rock mass tunnel support device according to claim 1, characterized in that, The connection component (23) includes: The first connector (231) is disposed on the support unit (22) and is used to connect the support top plate (21). The second connector (232) is used to connect two support columns (221) within the same support unit (22), and is used to adjust its own length according to the width of the roadway body (1) so that the two support columns (221) and their corresponding support roof plates (21) are connected through the first connector (231) and the support columns (221); The third connector (233) is used to connect two support columns (221) in adjacent support units (22). It is used to adjust its own length according to the turning angle of the main roadway (1) and the distance between two adjacent support roof plates (21) so that a connection is formed between adjacent support units (22).

5. A deep jointed rock mass tunnel support device according to claim 4, characterized in that: The first connector (231) includes a connecting base (2311) fixedly mounted on the support column (221), the connecting base (2311) having a mounting hole (2312), the connecting base (2311) having two mounting sleeves (2313), and the support top plate (21) having four mounting rods (2314), the four mounting rods (2314) being compatible with the mounting sleeves (2313).

6. A deep jointed rock mass tunnel support device according to claim 4, characterized in that: The second connector (232) includes two collars (2321) sleeved on the sleeve groove (223) provided on the same set of support columns (221). Each of the two collars (2321) is provided with a first threaded rod (2322), and a first threaded sleeve (2323) is threaded between the two first threaded rods (2322).

7. A deep jointed rock mass tunnel support device according to claim 4, characterized in that: The third connector (233) includes a rotating groove (2331) disposed on two adjacent collars (2321), each of which is provided with a sliding post (2332), each of which is provided with a connecting plate (2333), each of which is provided with a connecting part (2334) and a locking part (2335), and the two locking parts (2335) are provided with fixing holes (2336) for mutual use.

8. A deep jointed rock mass tunnel support device according to claim 1, characterized in that: The auxiliary component (25) includes a second threaded rod (251) that is ball-jointed on the connecting base (2311). The end of the second threaded rod (251) away from the connecting base (2311) is threadedly connected to a second threaded sleeve (252). The end of the second threaded sleeve (252) away from the second threaded sleeve (252) is threadedly connected to a fixed connector (26).

9. A deep jointed rock mass tunnel support device according to claim 8, characterized in that: The fixed connector (26) includes a third threaded rod (261) threadedly connected to the second threaded sleeve (252). The third threaded rod (261) is ball-jointed with a fixing block (262) at one end away from the second threaded sleeve (252). The fixing block (262) has positioning and fixing holes (264) at both ends. The support top plate (21) is evenly provided with positioning and fixing posts (263) that cooperate with the positioning and fixing holes (264).

10. A deep jointed rock mass tunnel support device according to claim 9, characterized in that: One end of the fixing block (262) is provided with a locking block (2621), and the other end of the fixing block (262) is provided with a slot (2622) for use with the locking block (2621).

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