Roof cutting pressure relief gob-side entry retaining gravel roadway side stability supporting structure
By designing a support structure that includes a lower pad, U-shaped steel, support plate and fastening frame, the instability problem of the crushed stone sidewall in the cut-and-release roadway was solved, and the stability and safety of the roadway were improved.
Patent Information
- Application Number
- CN202423258117.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-30
AI Technical Summary
During the process of cutting the top and releasing pressure along the roadway, the pressure on the crushed stone sidewalls is relatively high and they are easily deformed, resulting in a high failure rate of the roadway support structure and affecting the stability and safety of the roadway.
A support structure consisting of a lower pad plate, a lower U-shaped steel, an upper U-shaped steel, a support plate, a fastening guide rod, and a fastening frame is adopted. Controllable expansion and contraction can be achieved by adjusting the screw and lifting the fastening frame to adapt to the deformation of the surrounding rock, and the support stability is enhanced by clamps and lifting fulcrums.
It enables controllable expansion and contraction of the support structure, adapts to the deformation of the surrounding rock, enhances the axial force of the roadway roof, improves the stability and safety of the roadway, prevents slippage, and reduces the failure rate of the support structure.
Smart Images
Figure CN223577956U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the cutting top pressure relief coal pillarless mining field, concretely is a kind of cutting top pressure relief gob-side entry retaining broken stone roadway side stability supporting structure. BACKGROUND
[0002] In the process of cutting top pressure relief gob-side entry retaining, the broken stone pressure of thick coal seam cutting top roadway gangue compaction process is greater than that of thin and medium thick coal seam, at the same time, mining height increases, and the time required for gangue in goaf to collapse and fill the mining space is longer, which leads to unavoidable small amount of rotation deformation of broken stone side, therefore, the maintenance of broken stone side is the key to affect the effect of gob-side entry retaining.
[0003] In the process of plate collapse, broken gangue is easy to rush into roadway, causing safety hazards, and the broken stone side is composed of blocky granular gangue from the roof collapse of goaf, and the granular structure presents certain punching characteristics in the process of collapse and stability, which makes the broken stone side pressure appear more violently, leading to high failure rate of conventional roadside support structure and poor support effect, therefore, the utility model provides a kind of cutting top pressure relief gob-side entry retaining broken stone roadway side stability supporting structure to solve the above problems. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of cutting top pressure relief gob-side entry retaining broken stone roadway side stability supporting structure to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of cutting top pressure relief gob-side entry retaining broken stone roadway side stability supporting structure, including lower backing plate, the lower backing plate upper end is fixedly connected with lower u-shaped steel, the lower u-shaped steel inner two sides are fixedly connected with blocking frame;Upper backing plate, the upper backing plate lower end is fixedly connected with upper u-shaped steel, the inner side of upper u-shaped steel is fixedly connected with two support plates, the inner end of support plate is fixedly connected with fastening guide rod, the outer side of fastening guide rod is equipped with two fastening frames, and the upper end of fastening frame is opened inclined surface on opposite face;The lower u-shaped steel is sleeved in the inner side of upper u-shaped steel.
[0006] Preferably, the lower u-shaped steel is rotatably sleeved with adjusting screw, the adjusting screw is sleeved with lifting fastening frame, the upper end of lifting fastening frame is fixedly connected with two lifting fastening frames, and the upper end of lifting fastening frame is fixedly connected to the inner end face of lower u-shaped steel.
[0007] Preferably, the lifting fastening frame is inserted in the inclined surface between fastening frames.
[0008] Preferably, the outer end of fastening frame is tightly attached to the outer end face of blocking frame.
[0009] Preferably, the outer side of the top end of upper u-shaped steel and lower u-shaped steel is provided with clasp groove, and the clasp groove is fixedly connected with clasp.
[0010] Preferably, the upper u-shaped steel is fixedly connected with a lifting support point outside.
[0011] Preferably, the upper base plate is fixedly connected with a butt round steel at the upper end.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] The utility model can be controlled to stretch and retract, control the length of the supporting structure, realize longitudinal displacement to a certain extent, adapt to the deformation of surrounding rock, make the roadway roof force always along the axial direction, and be high in stability; the top and bottom are provided with base plates, the stability during supporting is enhanced; the lifting support point is convenient to install and prevents sliding in the longitudinal direction, the anti-skid structure is arranged, and the support is more stable. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural schematic view of the utility model;
[0015] Figure 2 It is a structural schematic view of the utility model internally cut open;
[0016] Figure 3 It is Figure 2 It is an enlarged schematic view of A in the middle;
[0017] Figure 4 It is a schematic view of the connection of part structures of the utility model;
[0018] Figure 5 It is a schematic view of part structures of the utility model.
[0019] In the drawing: 1 is upper u-shaped steel, 2 is lower u-shaped steel, 3 is lower base plate, 4 is upper base plate, 5 is butt round steel, 6 is clamping, 7 is clamping groove, 8 is lifting support point, 9 is adjusting screw rod, 10 is lifting fastening frame, 11 is telescopic stabilizing rod, 12 is fastening frame, 13 is fastening guide rod, 14 is supporting plate, 15 is blocking frame. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme of the utility model clear and complete, and the advantages more clear and apparent, the following will be further described in detail by combining with the drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all the embodiments, only to explain the embodiments of the utility model, and not to limit the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of protection of the utility model.
[0021] In the description of the utility model, it needs to explain, the term "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "a", "first", "second", "third", "fourth", "fifth", "sixth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0022] In the description of the utility model, it needs to explain, the term "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "a", "first", "second", "third", "fourth", "fifth", "sixth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0023] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that the embodiments can not be limited to these specific details in practice for ordinary skilled in the art. In some examples, well-known methods and structures are not described in detail to avoid unnecessary difficulty in understanding the embodiments. In addition, all embodiments can be used in combination with each other.
[0024] Please refer to Figures 1 to 5 The utility model provides a technical scheme: a kind of cutting top pressure relief gob along empty roadway gravel roadway side stability supporting structure, including lower backing plate 3, lower backing plate 3 upper end is fixedly connected with lower u-shaped steel 2, lower u-shaped steel 2 inside both sides are fixedly connected with blocking frame 15;Upper backing plate 4, upper backing plate 4 lower end is fixedly connected with upper u-shaped steel 1, upper u-shaped steel 1 inner side is fixedly connected with two support plates 14, support plate 14 inner end is fixedly connected with fastening guide rod 13, fastening guide rod 13 outer side is equipped with two fastening frame 12, and inclined surface is set in opposite face of fastening frame 12 upper end;Lower u-shaped steel 2 is nested in upper u-shaped steel 1, and the cooperation of lower u-shaped steel 2 and upper u-shaped steel 1 can realize lifting.
[0025] The lower U-shaped steel 2 is sleeved with an adjusting screw 9, the adjusting screw 9 is sleeved with a lifting fastening frame 10, the lifting fastening frame 10 is fixedly connected with two lifting fastening frames 10 at the upper end, the lifting fastening frame 10 is fixedly connected to the inner end face of the lower U-shaped steel, the lifting fastening frame 10 is inserted into the inclined surface between the fastening frames 12, the outer end of the fastening frame 12 is tightly attached to the outer end face of the blocking frame 15, the adjusting screw 9 is rotated to lift the lifting fastening frame 10, the fastening frame 12 is supported by the inclined surface, the fastening frame 12 is tightly clamped on both sides of the blocking frame 15, and the upper U-shaped steel 1 is prevented from descending.
[0026] The upper U-shaped steel 1 and the lower U-shaped steel 2 are provided with clamping grooves 7 at the outer side of the top end, the clamping grooves 7 are fixedly connected with clamps 6, the outer side of the upper U-shaped steel 1 is fixedly connected with lifting fulcrums 8, the upper pad 4 is fixedly connected with butt round steels 5 at the upper end, the clamps 6 are used for tightly connecting the upper U-shaped steel 1 and the lower U-shaped steel 2, the stability of the support is improved, the clamping grooves 7 prevent the clamps from sliding, and the lifting fulcrums 8 facilitate height adjustment.
[0027] In actual use, first, the lower U-shaped steel 2 is installed in the roadway, then the height of the upper U-shaped steel 1 is adjusted through the lifting fulcrums 8, the round steel 2 is inserted into the cutting seam hole to prevent the support from tilting under lateral pressure, the upper U-shaped steel 1 and the lower U-shaped steel 2 are connected through the clamps 6, the adjusting screw 9 is rotated to lift the lifting fastening frame 10, the fastening frame 12 is supported by the inclined surface, the fastening frame 12 is tightly clamped on both sides of the blocking frame 15, and the upper U-shaped steel 1 is prevented from descending.
[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A stability support structure for a rubble roadway with cut-off top pressure relief and gob-side retention, characterized in that: include The lower pad (3) is fixedly connected to the upper end of the lower pad (3), and the lower U-shaped steel (2) is fixedly connected to the two sides of the lower U-shaped steel (2). The upper pad (4) is fixedly connected to the lower end of the upper pad (4), and two support plates (14) are fixedly connected to the inner side of the upper U-shaped steel (1). A fastening guide rod (13) is fixedly connected to the inner end of the support plate (14). Two fastening frames (12) are sleeved on the outer side of the fastening guide rod (13). The upper end of the fastening frame (12) has an inclined surface on the opposite side. The upper U-shaped steel (1) is fitted with a lower U-shaped steel (2).
2. The stability support structure for a riprap roadway with cut-off top pressure relief and goaf retention as described in claim 1, characterized in that: The lower U-shaped steel (2) is rotatably fitted with an adjusting screw (9), and the adjusting screw (9) is fitted with a lifting fastening frame (10). The upper end of the lifting fastening frame (10) is fixedly connected to two lifting fastening frames (10), and the upper end of the lifting fastening frame (10) is fixedly connected to the inner end face of the lower U-shaped steel.
3. The stability support structure for a riprap roadway with cut-off top pressure relief and goaf retention as described in claim 2, characterized in that: The lifting fastening frame (10) is inserted into the inclined surface between the fastening frames (12).
4. The stability support structure for a riprap roadway with cut-off top pressure relief and goaf retention as described in claim 3, characterized in that: The outer end of the fastening bracket (12) is in close contact with the outer end face of the blocking bracket (15).
5. The stability support structure for a riprap roadway with cut-off top pressure relief and goaf retention as described in claim 1, characterized in that: The upper U-shaped steel (1) and the lower U-shaped steel (2) have a clamping groove (7) on the outer side of their top ends, and a clamping rod (6) is fastened in the clamping groove (7).
6. The stability support structure for a riprap roadway with cut-off top pressure relief and goaf retention as described in claim 1, characterized in that: The upper U-shaped steel (1) is fixedly connected to a lifting support point (8) on its outer side.
7. The stability support structure for a riprap roadway with cut-off top pressure relief and goaf retention as described in claim 1, characterized in that: The upper end of the upper pad (4) is fixedly connected to a butt round steel (5).