Fractured rock mass reinforcing device

Abstract

The utility model relates to a fractured rock mass reinforcing device, in particular to a fractured rock mass reinforcing device which comprises a cross plate, side frames are fixedly connected to the two sides of the cross plate, two anchor plates I are symmetrically installed on the cross plate in an attached mode, anchor plates II are hinged to the inner sides of the two anchor plates I, and the two anchor plates II are connected in a hinged mode. Screw holes are formed in the two ends of the two side frames. Sliding sleeves are fixedly connected to the front sides of the two anchor plates I, the two sliding sleeves are slidably connected to the left side and the right side of a cross plate correspondingly, long screws are connected to the two sliding sleeves in a threaded mode, and inserting holes allowing the long screws to be inserted are formed in the two sides of the cross plate correspondingly. The device has the beneficial effects that a three-dimensional supporting structure is formed in the rock seam, when the rock mass is subjected to shearing force, the device can bear part of shearing force, and the rock seam is prevented from further expanding and sliding relative to the rock mass.

Description

TECHNICAL FIELD

[0001] The utility model relates to broken rock mass reinforcing device, more specifically relates to a broken rock mass reinforcing device. BACKGROUND

[0002] In various engineering constructions, such as mining, tunneling, slope protection and underground space development, broken rock mass is often encountered. Due to the loose internal structure and developed fissures, the mechanical properties of broken rock mass are poor. Under the action of gravity, groundwater, construction disturbance and other factors, displacement, deformation and even collapse of broken rock mass are likely to occur, which poses a serious threat to the safety of construction and long-term stability.

[0003] Secondly, in the engineering operations involving broken rock mass such as mining and tunneling, the stability of broken rock blocks at rock joints is extremely poor, and they may fall at any time, posing a serious threat to construction personnel. Due to the poor stability of broken rock blocks at rock joints, broken rock mass is prone to local or overall collapse when subjected to construction disturbance, groundwater action or gravity.

[0004] The traditional rock surface fixing method is to wrap broken rock blocks with a net bag, which restrains the rock blocks within a certain range through the tension of the net bag to prevent them from scattering. However, the net bag mainly acts on the surface of the rock mass, and the loose rock blocks are bound together through the tension of the net bag, but the reinforcing effect on the inside of the rock joint is limited. The rock joint is prone to further expansion, leading to relative sliding of the rock mass. It is impossible to fundamentally prevent the expansion of the rock joint and the relative sliding of the rock mass, and it is difficult to fundamentally improve the overall stability of the broken rock mass. SUMMARY

[0005] The utility model provides a broken rock mass reinforcing device, which has the beneficial effect of forming a three-dimensional support structure in the rock joint. When the rock mass is subjected to shear force, the device can withstand part of the shear force, preventing the rock joint from further expanding and the rock mass from sliding relative to each other.

[0006] A broken rock mass reinforcing device comprises a cross-shaped frame plate with side frames fixed on both sides, two anchor plates I symmetrically installed on the cross-shaped frame plate, anchor plates II hinged on the inner sides of the two anchor plates I, and a hinge connection between the two anchor plates II.

[0007] The front sides of the two anchor plates I are fixed with sliding sleeves, which are respectively slidingly connected to the left and right sides of the cross-shaped frame plate. Long screws are threadedly connected to the two sliding sleeves, and the left and right sides of the cross-shaped frame plate are provided with insertion holes capable of inserting the long screws.

[0008] The left and right sides of the cross-shaped frame plate are provided with a plurality of insertion holes.

[0009] A plurality of through holes with the same diameter as the insertion holes are formed in the two anchor plates I.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model will be explained in further detail below in combination with the drawings and specific implementation methods.

[0011] Figure 1 It is a kind of broken rock mass reinforcing device's structural diagram Figure 1 ;

[0012] Figure 2 It is a kind of broken rock mass reinforcing device's structural diagram Figure 2 ;

[0013] Figure 3 It is the structural diagram of cross frame plate;

[0014] Figure 4 It is the structural diagram of the connection of two anchor plates II and two anchor plates I;

[0015] Figure 5 It is the structural diagram of anchor plate I;

[0016] Figure 6 It is the structural diagram of the split structure of two anchor plates II;

[0017] Figure 7 It is the structural diagram of the cooperation of column rod and screw;

[0018] Figure 8 It is the structural diagram of the cooperation of screw and slot hole;

[0019] Figure 9 It is the structural diagram of the unfolding of two anchor plates II in a kind of broken rock mass reinforcing device.

[0020] In the drawing: cross frame plate 101;Side frame 102;Jack 103;Round hole 104;Convex surface 105;Threaded sleeve 106;Anchor plate I 201;Sliding sleeve 202;Long screw 203;Through hole 204;Perforation 205;Anchor plate II 301;Slot hole 302;Screw rod 303;Frame plate 304;Column rod 305;Screw 306;Hole site 308. DETAILED DESCRIPTION

[0021] Referring to Figures 1 to 4 , it shows the schematic diagram of the embodiment of forming stable support system in rock fissure according to the utility model;

[0022] The application discloses a broken rock mass reinforcing device, which comprises a cross-shaped frame plate 101 welded with side frames 102 on both sides, two anchor plates I 201 symmetrically and adjacently arranged on the back side of the cross-shaped frame plate 101, two anchor plates II 301 hinged on the inner sides of the two anchor plates I 201, and a hinge shaft arranged between the two anchor plates II 301 and used for connecting the two anchor plates II 301.

[0023] During use, the two side frames 102 are fixed on the rock surface by means of expansion screws, and the two anchor plates II 301 and the two anchor plates I 201 are fixed in the rock joints and on the rock surface.

[0024] The two anchor plates II 301 are embedded in the joints of the rock mass, can be clamped to the surrounding rock blocks like a wedge, and are tightly attached to the rock joints, so that the device can bear part of the shearing force when the rock mass is subjected to the shearing force, and the rock joints are prevented from further expanding and the rock mass from relatively sliding.

[0025] The two anchor plates II 301 and the cross-shaped frame plate 101 form a three-dimensional supporting structure in the rock joints, the three-dimensional structure itself has stability and can effectively limit the displacement and deformation of the rock mass, and the original shape and stability of the rock mass are maintained.

[0026] Further, the broken rock mass is prone to local or overall collapse under the influence of construction disturbance, underground water or gravity. The device forms a stable supporting system in the rock joints through the three-dimensional supporting structure, can disperse the pressure borne by the rock mass, and enhances the overall strength and stability of the rock mass. In addition, when the rock mass is subjected to external force, the device can transmit the stress to the relatively stable rock stratum around, so that the stress concentration is avoided to cause the rock mass to be damaged.

[0027] Further, a plurality of barbs can be welded on the surfaces of the two anchor plates II 301 and the two anchor plates I 201, the barbs can increase the friction and engagement force with the rock blocks, and effectively prevent the rock blocks from loosening and falling off.

[0028] Referring to Figures 3 to 5 and 9, a schematic diagram of an embodiment for reinforcing different sizes of rock joints is shown.

[0029] Two front sides of the anchor plates 201 are welded with sliding sleeves 202, the two sliding sleeves 202 are respectively slidably connected on the left and right sides of the cross-shaped plate 101, long screws 203 are threadedly connected on the two sliding sleeves 202, and the two sides of the cross-shaped plate 101 are provided with a plurality of insertion holes 103 capable of inserting the long screws 203.

[0030] The two sliding sleeves 202 can slide on the cross-shaped plate 101 to change the distance between the two anchor plates 201, when the two anchor plates 201 are close to each other, the front sides of the two anchor plates 301 are driven to be close to each other, the rear sides of the two anchor plates 301 rotate around the axis of the hinge shaft, so that the angle between the two anchor plates 301 is smaller, when the distance between the two anchor plates 201 is larger, the angle between the two anchor plates 301 is larger, so that the two anchor plates 301 have good adaptability and flexibility, and can be adjusted and installed according to the angle of the rock fissure, and the rock fissure of different sizes can be reinforced.

[0031] When the distance between the two anchor plates 201 is larger, the two anchor plates 301 are attached to the cross-shaped plate 101, at this time, the two anchor plates 301 and the two anchor plates 201 are coplanar, and are suitable for reinforcing and supporting the flat rock surface, and the supporting and reinforcing area of the rock surface is transversely extended, as shown in Figure 9 Therefore, the device can play an effective supporting role on the narrow rock fissure or the flat rock structure.

[0032] When the positions of the two anchor plates 201 are adjusted, the long screws 203 are inserted into the corresponding insertion holes 103, so that the positions of the sliding sleeves 202 and the anchor plates 201 can be fixed, and the insertion and cooperation of the long screws 203 and the insertion holes 103 also avoids the transverse movement between the anchor plates 201 and the cross-shaped plate 101, thereby improving the stability of the device.

[0033] Referring to Figure 5 , a schematic view of an embodiment for increasing the gripping force between the device and the rock mass is shown;

[0034] The two anchor plates 201 are provided with a plurality of through holes 204 with the same hole diameter as the insertion holes 103, and the distance between the adjacent two through holes 204 is equal to the distance between the adjacent two insertion holes 103.

[0035] When the long screw 203 on the sliding sleeve 202 passes through the insertion hole 103 on the cross frame plate 101, the long screw 203 can further pass out from the through hole 204 corresponding to the insertion hole 103 and drill into the rock mass, thereby increasing the gripping force between the anchor plate I 201 and the rock mass and further improving the connection stability between the device and the rock mass.

[0036] On this basis, since the interval between the two adjacent through holes 204 is equal to the interval between the two adjacent insertion holes 103, when the long screw 203 passes through the mutually corresponding insertion hole 103 and through hole 204, the remaining multiple insertion holes 103 and multiple through holes 204 are also in a mutually corresponding and communicating state, therefore, each group of mutually corresponding insertion holes 103 and through holes 204 and each independent through hole 204 or each independent through hole 205 can selectively pass through the longer long screw 203 and drill into the rock mass according to actual needs and the broken condition of the rock mass, thereby further improving the gripping force between the device and the rock mass, increasing the reinforcement stability of the rock mass, and the screw can be an expansion screw.

[0037] Referring to Figure 7 , 8 and 9, a schematic view of an embodiment of further supporting two anchor plates II 301 according to the utility model is shown;

[0038] The upper and lower sides of the cross frame plate 101 are both provided with a circular hole 104, two columnar rods 305 are slidably connected in the two circular holes 104, the rear sides of the two columnar rods 305 are both threadedly connected with a screw 306, a through slot hole 302 is formed in the hinged shaft of the two anchor plates II 301, the two screws 306 are respectively inserted in the two ends of the slot hole 302, a threaded hole is formed in the core of the cross frame plate 101, a screw rod 303 is threadedly connected in the threaded hole, a frame plate 304 is rotatably connected with the screw rod 303 through a bearing, and the two columnar rods 305 are respectively fixedly connected at the two ends of the frame plate 304 through screws.

[0039] When the angle between the two anchor plates II 301 needs to be adjusted, the two long screws 203 are unscrewed from the sleeve 202, at this time the position of the two anchor plates I 201 can be adjusted transversely, then the screw rod 303 is rotated, because the screw rod 303 is in threaded connection with the cross frame plate 101, so the screw rod 303 can move forward and backward relative to the cross frame plate 101, the screw rod 303 drives the two column rods 305 to move in the circular hole 104 through the frame plate 304, the two column rods 305 drive the rear side of the two anchor plates II 301 to move forward and backward through the screws 306 inserted into the slot holes 302, when the rear side of the two anchor plates II 301 moves forward, the angle between the two anchor plates II 301 becomes larger, when the rear side of the two anchor plates II 301 moves backward, the angle between the two anchor plates II 301 becomes smaller, thereby realizing the operation of adjusting the angle between the two anchor plates II 301, secondly, by arranging the screw rod 303, the frame plate 304, the column rod 305 and the screws 306 inserted into the slot holes 302 on both sides, the two anchor plates II 301 can be supported from the middle of the device, further improving the stability of the two anchor plates II 301 embedded in the rock fissure, and also providing convenience for adjusting the angle of the two anchor plates II 301.

[0040] Because the screw rod 303 is in threaded connection with the cross frame plate 101 and has self-locking property, when the position of the two column rods 305 changes, locking can be realized, thereby fixing the angle of the two anchor plates II 301, which is convenient for inserting the long screws 203 into the insertion holes 103 and the through holes 204 and fixing the two anchor plates I 201. The insertion holes 103 and the through holes 204 are not infinitely matched, the number of the insertion holes 103 and the through holes 204 can be appropriately increased, so that the two anchor plates II 301 can be used in more sizes of rock fissures.

[0041] When the two anchor plates II 301 need to be used in flat state, as shown in Figure 9 , at this time the frame plate 304 and the two column rods 305 protrude from the front side of the cross frame plate 101, in order to avoid scratching or hitting pedestrians, at this time the two screws 306 can be unscrewed from the slot holes 302 and the column rods 305, and then the screw rod 303 is rotated until the screw rod 303 and the two column rods 305 are separated from the cross frame plate 101, so that the screw rod 303, the frame plate 304 and the column rods 305 protruding from the front side of the device are removed, and the device body presents a plane for use.

[0042] Further, the length of the screw rod 303 located at the rear side of the frame plate 304 is less than the length of the column rod 305; the rear side of the screw rod 303 avoids interfering with the two anchor plates II 301 to form a smaller included angle.

[0043] Referring to Figure 9 , a schematic diagram of an embodiment for providing stable support for the screw rod 303 in the utility model is shown;

[0044] The front side of the cross plate 101 is fixed with a threaded sleeve 106 in communication with the threaded hole, and a screw rod 303 is threadedly connected with the threaded sleeve 106; the threaded sleeve 106 prolongs the threaded contact surface between the cross plate 101 and the screw rod 303, and provides better support for the screw rod 303, avoiding the screw rod 303 from being deflected.

[0045] Meanwhile, since the length of the screw rod 303 located at the rear side of the frame plate 304 is smaller than the length of the column rod 305, when the two anchor plates II 301 are flattened, as shown in Figure 9 Without the need to remove the screw rod 303 and the column rod 305, the rear side of the screw rod 303 is not suspended from the cross plate 101 under the clamping of the threaded sleeve 106, thereby providing stable support for the screw rod 303.

[0046] Further, the two ends of the two side frames 102 are formed with convex surfaces 105 in plane with the rear end surface of the anchor plate I 201; the rear end surface of the anchor plate I 201 is in plane with the convex surface 105, eliminating the height difference between the rear end surface of the anchor plate I 201 and the rear end surface of the side frame 102, so that the anchor plate I 201 and the side frame 102 can be synchronously attached to the rock surface, increasing the contact surface with the rock surface, and further stabilizing the reinforcement of the rock mass.

[0047] Referring to Figure 6 , a schematic view of an embodiment according to the further reinforcement of the hole position 308 in the utility model is shown;

[0048] A plurality of hole positions 308 are formed on the outer side of the two anchor plates II 301; longer screws can pass through the hole positions 308 and drill into the rock mass, further increasing the connection stability between the hole positions 308 in the rock fissure and the rock mass.

[0049] The surfaces of the two anchor plates I 201 and the two anchor plates II 301 are coated with an eye-catching color, such as red, so that the reinforced position of the rock mass can be found from a distance, and also plays a warning role.

Claims

1. A rock mass fragmentation reinforcement apparatus, characterized in that, The utility model provides a cross frame plate (101) which is fixed with a side frame (102) on both sides, two anchor plates I (201) are symmetrically and fixedly connected on the cross frame plate (101), two anchor plates II (301) are hingedly connected to the inner sides of the two anchor plates I (201), and the two anchor plates II (301) are hingedly connected.

2. A rock mass reinforcement device according to claim 1, characterised in that The front side of the two anchor plates I (201) is fixedly connected with a sliding sleeve (202), the two sliding sleeves (202) are slidingly connected to the left and right sides of the cross frame plate (101), long screws (203) are threadedly connected to the two sliding sleeves (202), and the two sides of the cross frame plate (101) are provided with insertion holes (103) into which the long screws (203) are inserted.

3. A rock mass reinforcement apparatus as claimed in claim 2, wherein The two sides of the cross frame plate (101) are provided with a plurality of insertion holes (103).

4. A rock mass reinforcement apparatus as claimed in claim 3, wherein The two anchor plates I (201) are provided with a plurality of through holes (204) with the same hole diameter as the insertion holes (103).

5. A rock mass reinforcement apparatus as claimed in claim 4, wherein, The upper and lower sides of the cross frame plate (101) are provided with circular holes (104), columnar rods (305) are slidingly connected to the two circular holes (104), the rear sides of the two columnar rods (305) are threadedly connected with screws (306), a slot hole (302) is formed in the hinge shaft of the hingedly connected two anchor plates II (301), the two screws (306) are inserted into the two ends of the slot hole (302), a threaded hole is formed in the core of the cross frame plate (101), a screw rod (303) is threadedly connected to the threaded hole, a frame plate (304) is rotatably connected to the screw rod (303) through a bearing, and the two columnar rods (305) are fixedly connected to the two ends of the frame plate (304) through screws.

6. A rock mass reinforcement apparatus as claimed in claim 5, wherein, The length of the screw rod (303) located at the rear side of the frame plate (304) is less than the length of the columnar rod (305).

7. A rock mass reinforcement apparatus as claimed in claim 6, wherein The front side of the cross frame plate (101) is fixedly connected with a threaded sleeve (106) which is in communication with the threaded hole, and the screw rod (303) is threadedly connected with the threaded sleeve (106).

8. A rock mass reinforcement apparatus as claimed in claim 7, wherein, The two ends of the two side frames (102) are formed with convex surfaces (105) which are flush with the rear end faces of the anchor plates I (201).

9. The apparatus of claim 1, wherein: The outer sides of the two anchor plates II (301) are provided with a plurality of hole positions (308).

10. A rock mass reinforcement apparatus as claimed in claim 9, wherein, The upper and lower sides of the two anchor plates I (201) are provided with a plurality of perforations (205).

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