Temporary supporting device for mine roof loosening dangerous rock

Abstract

The utility model belongs to the technical field of roadway supporting, and particularly discloses a mining roof loosening dangerous rock temporary supporting device which comprises a supporting frame, the supporting frame comprises a supporting plate used for supporting a roadway roof, a vertical supporting rod and an inclined supporting rod, and the bottom of the supporting plate is downwards connected with the vertical supporting rod. The side portions of the vertical supporting rods are connected with the anchor rods on the two side walls of the roadway through inclined supporting rods, the inclined supporting rods are divided into inclined rods B and inclined rods A, the vertical supporting rods are connected with the anchor rods on one side wall of the roadway through at least two inclined rods A, and the vertical supporting rods are connected with the anchor rods on the other side wall of the roadway through at least one inclined rod B. The device is simple in structure, high in flexibility and wide in applicability, can adapt to different working condition environments, reduces the labor intensity of workers, improves the temporary supporting efficiency of a roadway, improves the tunneling speed of the roadway, and facilitates quick and safe temporary supporting operation in a mine.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep coal mine roadway support, and particularly relates to a temporary support device for loose and dangerous roof rocks in mines. Background Technique

[0002] With the gradual increase of coal mining depth, the depth of some mines is close to or even exceeds one thousand meters. At the same time, the coal resources under "simple" conditions are gradually exhausted, and the coal resources under "complex" conditions will be mainly mined in the next stage. Roadways under deep and complex conditions are more vulnerable to the influence of "three highs and one disturbance", that is, high ground stress, high ground temperature, high karst water pressure in the surrounding rock of the roadway and strong disturbance during the excavation process. The manifestation of mine pressure is obvious, and the roof is prone to looseness or even fragmentation. If the loose and dangerous roof rocks after roadway excavation are not supported in time and effectively, accidents of roof falling and hurting people will occur. Effective temporary support methods and technologies for loose and dangerous roof rocks in roadway roofs are real problems that have long troubled coal mine production.

[0003] Traditional temporary support methods for roadway roofs mainly include crib support, single hydraulic support, etc.

[0004] Cribs are convenient to obtain materials and have low costs, but under the conditions of deep roadways, they are restricted by the high-temperature and high-humidity environment in the mine and will deteriorate and rot, greatly reducing the compressive and bending strengths of the wood, shortening its service life, and even causing the collapse of the roadway roof in serious cases. Moreover, stress gauges cannot be installed on the cribs for real-time stress tracking and monitoring.

[0005] Single hydraulic support has the advantages of strong load-bearing capacity, good stability and long service life. However, its manufacturing and maintenance costs are relatively high, operation requires certain professional skills and experience, its volume is large and it is not convenient to carry and move. At the same time, for roadways with relatively large heights, ordinary single hydraulic supports cannot meet the support height requirements. Content of the Utility Model

[0006] In order to overcome the deficiencies of the prior art and solve the above technical problems, the utility model provides a temporary support device for loose and dangerous roof rocks in mines.

[0007] The utility model is realized through the following technical solutions.

[0008] The utility model provides a temporary support device for loose and dangerous roof rocks in mines, including a support frame. The support frame includes a support plate for supporting the roadway roof, vertical support rods, and inclined support rods. The bottom of the support plate is connected downward to the vertical support rods. The side of the vertical support rods is connected to the bolts on both sides of the roadway through the inclined support rods. The inclined support rods are divided into inclined rod B and inclined rod A. The vertical support rods are connected to the bolts on one side of the roadway through at least two inclined rod A, and the vertical support rods are connected to the bolts on the other side of the roadway through at least one inclined rod B.

[0009] As a further improvement of the above solution, at least two groups of the support frames are arranged along the roadway.

[0010] As a further improvement of the above solution, it further includes fixed clamping plates, and the fixed clamping plates are used to connect adjacent support frames of at least two groups.

[0011] As a further improvement of the above solution, the fixed clamping plate includes clamping plate A and clamping plate B, and clamping plate A and clamping plate B are fixed on both sides of the vertical support rod through fixing bolts.

[0012] As a further improvement of the above solution, stress gauges are arranged on the vertical support rods and / or inclined support rods and / or anchor rods of every at least one group of the support frames.

[0013] As a further improvement of the above solution, two inclined rods A are provided, one inclined rod B is provided, and the positions of the inclined rod A and the inclined rod B between adjacent two groups of the support frames are opposite.

[0014] As a further improvement of the above solution, the vertical support rod is connected to the inclined rod A and the inclined rod B by welding, and the inclined rod A and the inclined rod B are connected to their corresponding anchor rods by welding.

[0015] As a further improvement of the above solution, the vertical support rod is connected to the inclined rod A and the inclined rod B through connecting piece A, the inclined rod A is connected to the anchor rod through connecting piece B, and the inclined rod B is connected to the anchor rod through connecting piece C.

[0016] As a further improvement of the above solution, the connecting piece A includes a connecting ring threadedly connected to the vertical support rod, and external to the connecting ring are threaded interfaces A corresponding to the number of the inclined rod A and the inclined rod B, and the threaded interfaces A are connected to the corresponding inclined rod A or inclined rod B through hinge pieces.

[0017] As a further improvement of the above solution, the hinge includes a hinge part A and a hinge part B. One end of the hinge part A is threadedly connected to the threaded interface A. The other end of the hinge part A is hinged to one end of the hinge part B. The other end of the hinge part B is provided with a threaded interface B, and the threaded interface B is threadedly connected to one end of the inclined rod A or the inclined rod B. The connecting piece B includes a hinge part C, a reversing hinge part and a hinge part D. One end of the hinge part C is provided with a threaded interface C, and the threaded interface C is threadedly connected to the other end of the inclined rod A. The other end of the hinge part C is hinged to one end of the reversing hinge part. The other end of the reversing hinge part is hinged to one end of the hinge part D. The other end of the hinge part D is provided with a threaded interface D, and the threaded interface D is threadedly connected to the anchor rod. The connecting piece C includes a hinge part E and a hinge part F. One end of the hinge part E is provided with a threaded interface E, and the threaded interface E is threadedly connected to the other end of the inclined rod B. The other end of the hinge part E is hinged to one end of the hinge part F. The other end of the hinge part F is provided with a threaded interface F, and the threaded interface F is threadedly connected to the anchor rod.

[0018] The beneficial effects of the present utility model are as follows:

[0019] Compared with the prior art, the present utility model breaks through the disadvantages of traditional wooden crib support, such as easy decay, low strength, and the large volume, heavy weight, and high cost of single hydraulic supports. It adopts a design combining a support plate, vertical support rods, and inclined support rods, and is connected by detachable mechanical components. The connection method is reliable, which can effectively support the loose and dangerous rocks on the roof and reduce the risk of roof collapse.

[0020] Stress gauges can be arranged on the vertical support rods and the inclined support rods for stress monitoring, which can monitor the stress change situation in real time and take strengthening and supplementary support measures in time for the stress mutation points.

[0021] The vertical support rod and at least three inclined support rods can form at least a triangular pyramid-shaped stable structure in space, which improves the support strength. Moreover, the installation position of the support frame is relatively high, and the space below it can be used for coal miners to pass through and carry equipment, which improves the working comfort of coal miners compared with the narrow and crowded working environment of traditional access roadways.

[0022] The number and spacing distance of the support frames can be selected and installed according to the actual working conditions. The structure of the support frame itself is also simple and practical, detachable, adjustable, and combinable, with strong flexibility and wide applicability. It can reduce the labor intensity of workers, increase the temporary support efficiency of the roadway, improve the roadway tunneling speed, and facilitate fast and safe temporary support operations in the mine. Description of the Drawings

[0023] Figure 1 is the structural schematic diagram when the present utility model is in use;

[0024] Figure 2 is the structural schematic diagram of the present utility model;

[0025] Figure 3 is the structural schematic diagram of the support frame in the present utility model;

[0026] Figure 4 is the present utility model Figure 3 the enlarged view of A therein;

[0027] Figure 5 is the present utility model Figure 3 the enlarged view of B therein;

[0028] Figure 6 is the present utility model Figure 3 the enlarged view of C therein;

[0029] Figure 7 is the structural schematic diagram of the connecting member A in the present utility model

[0030] Figure 8 is the structural schematic diagram of the connecting member B in the present utility model;

[0031] Figure 9 is the structural schematic diagram of the connecting member C in the present utility model.

[0032] In the figure: support plate 1, vertical support rod 2, inclined support rod 3, anchor rod 4, inclined rod A 5, inclined rod B 6, fixed clamping plate 7, clamping plate A 701, clamping plate B 702, stress gauge 8, connecting member A 9, connecting ring 901, threaded interface A 902, connecting member B 10, hinged part C 1001, reversing hinged part 1002, hinged part D 1003, threaded interface C 1004, threaded interface D 1005, connecting member C 11, hinged part E 1101, hinged part F 1102, threaded interface E 1103, threaded interface F 1104, hinge 12, hinged part A 1201, hinged part B 1202, threaded interface B 1203. Specific embodiments

[0033] In order to further elaborate the technical solution of the present utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0034] As Figures 1 to 9As shown in the figure, a temporary support device for loose and dangerous roof rocks in mines includes a support frame. The support frame includes a support plate 1 for supporting the roof of the roadway, a vertical support rod 2, and an inclined support rod 3. The bottom of the support plate 1 is connected downward to the vertical support rod 2. The side of the vertical support rod 2 is connected to the anchor bolts 4 on both side walls of the roadway through the inclined support rod 3. The two sides refer to the left and right sides. The inclined support rod 3 is divided into an inclined rod B6 and an inclined rod A5. The vertical support rod 2 is connected to the anchor bolts 4 on one side wall of the roadway through at least two inclined rods A5, and the vertical support rod 2 is connected to the anchor bolts 4 on the other side wall of the roadway through at least one inclined rod B6.

[0035] Furthermore, the support plate 1 can be designed and selected in terms of shape and material according to the size and shape of the dangerous rock. The shape can be planar or curved, and it is not limited to circular or polygonal shapes. The material commonly used is mine iron (steel) materials. The diameters and lengths of the vertical support rod 2 and the inclined support rod 3 can be designed and selected according to the size of the dangerous rock and the height of the roadway.

[0036] Furthermore, at least two groups of support frames are arranged along the roadway. During actual use, the installation quantity of the support frames can be selected according to the actual situation. For example, when single-group temporary support is required, one group can be used alone. If two or more groups of support frames are required to be used in cooperation, the installation interval and quantity of the support frames can be selected according to the sectional length of the roadway.

[0037] Furthermore, it also includes a fixed clamping plate 7, which is used to connect adjacent support frames of at least two groups. When two or more groups of support frames are used, the use of the fixed clamping plate 7 can strengthen the connection between the support frames, making it an integral support device, enhancing the structural stability of the overall device, enabling the support frames to cooperate to provide more stable support for the roof of the roadway, and enhancing the support capacity.

[0038] Furthermore, the fixed clamping plate 7 includes a clamping plate A701 and a clamping plate B702, and the clamping plate A701 and the clamping plate B702 are fixed on both sides of the vertical support rod 2 through fixed bolts. The fixed clamping plate 7 has a simple structure, low cost, and convenient material selection.

[0039] Furthermore, a stress gauge 8 is arranged on the vertical support rod 2 and / or the inclined support rod 3 and / or the anchor bolt 4 of every at least one group of support frames. Stress on-line monitoring of the support frames is carried out. For example, stress gauges are arranged on the vertical support rod 2 and / or the inclined support rod 3 and / or the anchor bolt 4 in the support frames at a certain step distance, and the real-time change of stress is observed above the mine. If the stress value at a certain place is relatively large, strengthen the support of that place and the adjacent roadway in time. The stress gauge uses a mine bolt (cable) stress gauge.

[0040] Furthermore, there are two diagonal bars A5 and one diagonal bar B6. The positions of the diagonal bars A5 and B6 between adjacent groups of support frames are opposite. The three diagonal support rods 3 can form a stable triangular pyramid structure in space, and the connection points of the diagonal support rods 3 and the side roadway bolts 4 can form a stable triangular structure on a plane.

[0041] Specifically, the vertical support rod 2 is connected to the diagonal bars A5 and B6 by welding, and the diagonal bars A5 and B6 are connected to their corresponding bolts 4 by welding. The welding connection method adopted in this embodiment has a low cost and is convenient for obtaining materials, and is suitable for the use scenarios of single-group or fewer groups of support frames.

[0042] For further improvement, the vertical support rod 2 is connected to the diagonal bars A5 and B6 through a connector A9, the diagonal bar A5 is connected to the bolt 4 through a connector B10, and the diagonal bar B6 is connected to the bolt 4 through a connector C11.

[0043] Specifically, the connector A9 includes a connection ring 901 threadedly connected to the vertical support rod 2. The outside of the connection ring 901 is provided with threaded interfaces A902 corresponding to the number of the diagonal bars A5 and B6. The threaded interfaces A902 are connected to the corresponding diagonal bars A5 or B6 through hinge members 12. The connection ring 901 can move up and down along the vertical support rod 2 to adjust and determine the connection height with the diagonal bars A5 and B6, which is convenient for determining the connection angles and lengths of the diagonal bars A5 and B6. The threaded interfaces A902 are used to connect the diagonal bars A5 and B6 respectively. There are three threaded interfaces A902 in this embodiment. The threaded connection design facilitates the disassembly, installation, and maintenance and replacement of the above components.

[0044] Specifically, the hinge member 12 includes a hinge portion A1201 and a hinge portion B1202. One end of the hinge portion A1201 is threadedly connected to the threaded interface A902. The other end of the hinge portion A1201 is hinged to one end of the hinge portion B1202. The other end of the hinge portion B1202 is provided with a threaded interface B1203, and the threaded interface B1203 is threadedly connected to one end of the diagonal bar A5 or the diagonal bar B6. The connecting member B10 includes a hinge portion C1001, a reversing hinge portion 1002, and a hinge portion D1003. One end of the hinge portion C1001 is provided with a threaded interface C1004, and the threaded interface C1004 is threadedly connected to the other end of the diagonal bar A5. The other end of the hinge portion C1001 is hinged to one end of the reversing hinge portion 1002. The other end of the reversing hinge portion 1002 is hinged to one end of the hinge portion D1003. The other end of the hinge portion D1003 is provided with a threaded interface D1005, and the threaded interface D1005 is threadedly connected to the anchor bolt 4. The connecting member C11 includes a hinge portion E1101 and a hinge portion F1102. One end of the hinge portion E1101 is provided with a threaded interface E1103, and the threaded interface E1103 is threadedly connected to the other end of the diagonal bar B6. The other end of the hinge portion E1101 is hinged to one end of the hinge portion F1102. The other end of the hinge portion F1102 is provided with a threaded interface F1104, and the threaded interface F1104 is threadedly connected to the anchor bolt 4. In the above, the design of the threaded connection between components ensures the connection strength on the one hand, and on the other hand, it is convenient for the angle adjustment between components, convenient for installation, and subsequent disassembly, maintenance, and replacement. In this embodiment, the detachable connection between components makes the device more convenient in terms of transportation, installation, and subsequent maintenance, and is suitable for application scenarios with a large number of support frame groups.

[0045] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope.

[0046] The above shows and describes the basic principles, main features, and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.

[0047] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A temporary support device for loose and dangerous rocks on the roof of a mine, characterized by: The invention comprises a support frame, wherein the support frame comprises a support plate (1) for supporting a tunnel roof, a vertical support rod (2), and an inclined support rod (3); the bottom of the support plate (1) is downwardly connected to the vertical support rod (2); the side of the vertical support rod (2) is connected to the anchor rods (4) on the two side walls of the tunnel through the inclined support rod (3); the inclined support rod (3) is divided into an inclined rod B (6) and an inclined rod A (5); the vertical support rod (2) is connected to the anchor rod (4) on one side wall of the tunnel through at least two inclined rods A (5); and the vertical support rod (2) is connected to the anchor rod (4) on the other side wall of the tunnel through at least one inclined rod B (6).

2. A temporary support device for loose and dangerous rocks on a mine roof according to claim 1, characterized in that: At least two groups of support frames are arranged along the tunnel.

3. The temporary support device for loose and dangerous rocks on the mine roof according to claim 2 is characterized in that: It also includes a fixing clamp (7), and the fixing clamp (7) is used to connect at least two groups of adjacent support frames.

4. A temporary support device for loose and dangerous rocks on a mine roof according to claim 3, characterized in that: The fixed clamping plate (7) comprises a clamping plate A (701) and a clamping plate B (702), and the clamping plate A (701) and the clamping plate B (702) are fixed to both sides of the vertical support rod (2) by fixing bolts.

5. A temporary support device for loose and dangerous rocks in a mine roof according to claim 2, characterized in that: A stress gauge (8) is provided on at least one group of vertical support rods (2) and / or oblique support rods (3) and / or anchor rods (4) of the support frame at each interval.

6. A temporary support device for loose and dangerous rocks on a mine roof according to claim 2, characterized in that: Two inclined rods A (5) are provided, and one inclined rod B (6) is provided. The positions of the inclined rods A (5) and the inclined rods B (6) between two adjacent groups of the support frames are opposite.

7. A temporary support device for loose and dangerous rocks on a mine roof according to claim 1, characterized in that: The vertical support rod (2) is connected to the inclined rod A (5) and the inclined rod B (6) by welding, and the inclined rod A (5) and the inclined rod B (6) are connected to their corresponding anchor rods (4) by welding.

8. A temporary support device for loose and dangerous rocks on a mine roof according to claim 1, characterized in that: The vertical support rod (2) is connected to the inclined rod A (5) and the inclined rod B (6) via a connecting piece A (9); the inclined rod A (5) is connected to the anchor rod (4) via a connecting piece B (10); and the inclined rod B (6) is connected to the anchor rod (4) via a connecting piece C (11).

9. A temporary support device for loose and dangerous rocks on a mine roof according to claim 8, characterized in that: The connecting member A (9) comprises a connecting ring (901) threadedly connected to the vertical support rod (2); the connecting ring (901) is provided with threaded interfaces A (902) corresponding to the number of inclined rods A (5) and inclined rods B (6) on the outside; the threaded interfaces A (902) are connected to the corresponding inclined rods A (5) or inclined rods B (6) via hinges (12).

10. A temporary support device for loose and dangerous rocks on a mine roof according to claim 9, characterized in that: The hinged member (12) comprises a hinged portion A (1201) and a hinged portion B (1202), one end of the hinged portion A (1201) being threadedly connected to a threaded interface A (902), the other end of the hinged portion A (1201) being hingedly connected to one end of the hinged portion B (1202), the other end of the hinged portion B (1202) being provided with a threaded interface B (1203), the threaded interface B (1203) being threadedly connected to one end of an inclined rod A (5) or an inclined rod B (6), the connecting member B (10) comprising a hinged portion C (1001), a reversing hinged portion (1002) and a hinged portion D (1003), one end of the hinged portion C (1001) being provided with a threaded interface C (1004), the threaded interface C (1004) being threadedly connected to the other end of the inclined rod A (5), the other end of the hinged portion C (1001) being provided with a threaded interface C (1004), One end of the reversing hinged portion (1002) is hinged, and the other end of the reversing hinged portion (1002) is hinged to one end of the hinged portion D (1003), and the other end of the hinged portion D (1003) is provided with a threaded interface D (1005), and the threaded interface D (1005) is threadedly connected to the anchor rod (4). The connecting member C (11) includes a hinged portion E (1101) and a hinged portion F (1102), and one end of the hinged portion E (1101) is provided with a threaded interface E (1103), and the threaded interface E (1103) is threadedly connected to the other end of the inclined rod B (6), and the other end of the hinged portion E (1101) is hinged to one end of the hinged portion F (1102), and the other end of the hinged portion F (1102) is provided with a threaded interface F (1104), and the threaded interface F (1104) is threadedly connected to the anchor rod (4).

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