Gob-side entry retaining roadside supporting device and method

Abstract

The invention relates to the technical field of coal mining, in particular to a gob-side entry retaining roadside supporting device and method.The gob-side entry retaining roadside supporting device comprises a roadside waste rock blocking supporting assembly and a roadside bearing supporting assembly, and the roadside waste rock blocking supporting assembly is arranged on a step, adjacent to a roadway, of a gob; the roadside waste rock blocking supporting assembly comprises a supporting body and a top plate supporting body arranged on the supporting body, the supporting body is used for protecting waste rock falling off from the goaf, and the top plate supporting body is used for supporting a top plate above the goaf; the roadside supporting and supporting assembly is arranged on the step and located between the roadside waste rock blocking and supporting assembly and the roadway, the roadside supporting and supporting assembly comprises a forming component and a filling material arranged in the forming component, and the filling material enables the forming component to form a stable structure and is used for forming the side wall, close to a goaf, of the roadway together with the step; according to the gob-side entry retaining roadside supporting device, material consumption can be reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining, and in particular to a gob-side tunnel retaining tunnel support device and a support method. Background Art

[0002] At present, the technology of retaining lanes in the goaf has been widely used by major domestic coal companies. By retaining the mining lanes of the current working face along the goaf during the mining process and using them as the mining lanes of the next working face, the section protection coal pillars between working faces are directly eliminated, the resource recovery rate is improved, and the tense situation of mining and excavation continuity is alleviated.

[0003] Then, due to the small thickness of coal seams in thin coal seam mining, the total amount of coal resources and economic value are relatively low, and the tunnel height (usually 2.8m~3m) cannot be further reduced. The tunnel retaining method and tunnel retaining cost are basically the same as those of tunnel retaining along the goaf of general medium and thick coal seams, resulting in high material cost and low construction efficiency for tunnel retaining support along the goaf of thin coal seams. Summary of the invention

[0004] The invention provides a gob-side tunnel-retaining tunnel-side supporting device and a supporting method. The gob-side tunnel-retaining tunnel-side supporting device can reduce material consumption and improve construction efficiency.

[0005] In the first aspect, an embodiment of the present invention provides a roadside support device for a goaf-retained roadway, comprising: a roadside gangue retaining support assembly, which is arranged on a step of a roadway adjacent to the goaf, the roadside gangue retaining support assembly comprising a supporting body and a roof support body arranged on the supporting body, the supporting body is used to protect gangue rolling down from the goaf, and the roof support body is used to support the roof above the goaf; a roadside supporting support assembly, which is arranged on the step and is located between the roadside gangue retaining support assembly and the roadway, the roadside supporting support assembly comprising a forming component and a filling material arranged in the forming component, the filling material enables the forming component to form a stable structure, which is used to form the side wall of the roadway adjacent to the goaf together with the step.

[0006] In a possible implementation, the roadside support assembly further includes a shaping and fixing assembly disposed in the molding component, the shaping and fixing assembly internally supports the molding component to maintain the shape of the molding component before the filling material is injected into the molding component.

[0007] In a possible implementation, the shaping and fixing assembly includes at least one of a mesh, a tension anchor, and a ceiling anchor.

[0008] In a possible implementation, the roadway side rock retaining support assembly further includes a roof mesh disposed on the top of the support body, and the roof mesh is fixed to the bottom of the roof through the roof support body.

[0009] In a possible implementation, the roof mesh includes at least one of a flexible mesh, a diamond mesh, a steel mesh, and a warp and weft mesh.

[0010] In one possible implementation, the forming component includes at least one of a flexible mold bag and a metal sleeve; and / or the supporting body includes at least one of a rock retaining support, a single hydraulic prop, and a wooden point column; and / or the roof support body includes at least one of an anchor rod and an anchor cable.

[0011] In a possible implementation, the height of the roadside supporting assembly is consistent with the mining height of the working face of the goaf; and / or the thickness of the roadside supporting assembly is 0.6m-1.5m.

[0012] In the second aspect, an embodiment of the present invention provides a support method for the above-mentioned roadside support device for goaf-retaining roadways, comprising the following steps: construction of roadside rock retaining support components: arranging roadside rock retaining support components on the steps of the roadway adjacent to the goaf; construction of roadside supporting support components: after the construction of roadside rock retaining support components is completed, arranging roadside supporting support components on the steps of the goaf.

[0013] In one possible implementation, the tunnel side rock retaining support assembly includes a roof mesh arranged on the top of a supporting body. The construction of the tunnel side rock retaining support assembly includes: laying the roof mesh under the roof and fixing the roof mesh through the roof supporting body; and setting a supporting body on the step to support the roof and the roof supporting body.

[0014] In one possible implementation, the tunnel side support assembly includes a shaping and fixing assembly arranged in a forming component, and the construction of the tunnel side support assembly includes: fixing the forming component between the tunnel side rock retaining support assembly and the tunnel; installing the shaping and fixing assembly into the forming component and supporting the forming component from the inside; and injecting filling material into the forming component.

[0015] The present invention provides a tunnel-side supporting device and a supporting method for a goaf-retaining tunnel. The tunnel-side supporting device for a goaf-retaining tunnel protects gangue rolling down from the goaf area through a supporting body during the construction of the goaf-retaining tunnel, and is used to support the roof above the goaf through a roof supporting body. The tunnel-side supporting assembly is arranged on the steps of the goaf and together with the steps forms the side wall of the tunnel, which can save more than half of the materials, thereby reducing material consumption and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a tunnelside support device for gob-side tunnel retention provided by the present invention.

[0018] Figure 2 It is a flowchart of a method for supporting the side of a gob-side tunnel provided by the present invention.

[0019] Reference numerals: 1. Roadside rock retaining support assembly; 11. Support body; 12. Roof support body; 13. Roof mesh; 2. Lane side support and support assembly; 21. Forming component; 22. Filling material; 23. Shaping and fixing assembly; 3. Goaf; 4. Tunnel; 5. Steps. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Combine the following Figure 1 A roadside support device for gob-side entry retention provided by an embodiment of the present invention is described, comprising a roadside gangue retaining support assembly 1 and a roadside supporting support assembly 2, wherein: The roadside gangue retaining support assembly 1 is arranged on the step 5 of the roadway 4 adjacent to the goaf 3. The roadside gangue retaining support assembly 1 includes a supporting body 11 and a roof support body 12 arranged on the supporting body 11. The supporting body 11 is used to protect the gangue rolling down from the goaf 3, and the roof support body 12 is used to support the roof above the goaf 3.

[0022] The roadside support assembly 2 is arranged on the step 5 and is located between the roadside rock retaining support assembly 1 and the roadway 4. The roadside support assembly 2 includes a forming component 21 and a filling material 22 arranged in the forming component 21. The filling material 22 enables the forming component 21 to form a stable structure, which is used to form the side wall of the roadway 4 adjacent to the goaf 3 together with the step 5. Specifically, the roadside support assembly 2 can be a continuous structure along the extension direction of the roadway 4, or a structure arranged at multiple intervals along the extension direction of the roadway 4.

[0023] In the present invention, the support body 11 is used to protect the gangue rolling down from the goaf 3 during the construction of the goaf-side tunneling, the roof support body 12 is used to support the roof above the goaf 3, and the tunnel side support assembly 2 is arranged on the step 5 of the goaf 3, and together with the step 5, it forms the side wall of the tunnel 4, which can save more than half of the materials, thereby reducing material consumption and improving construction efficiency.

[0024] Specifically, the side-of-the-lane gangue retaining support assembly 1 is arranged on the step 5 of the tunnel 4 adjacent to the goaf 3, wherein the support body 11 can effectively block the gangue rolling down from the goaf 3. In the actual mining process, gangue often rolls down from the goaf 3. If there are no effective protective measures, these gangue will flow into the tunnel 4 and cause safety hazards. In the process of retaining the tunnel along the goaf, there is also the situation of gangue rolling down from the goaf 3. The support body 11 can prevent the gangue rolling down from the goaf 3 during the construction of retaining the tunnel along the goaf from affecting the side-of-the-lane support assembly 2. At the same time, the roof support body 12 supports the roof upward to prevent the roof from collapsing. The side-of-the-lane support assembly 2 forms a stable side wall between the side-of-the-lane gangue retaining support assembly 1 and the tunnel 4, and together with the step 5, it constitutes the wall of the tunnel 4. This design makes full use of the step 5 of the goaf 3 as a supporting base, and can save more than half of the support materials compared with the traditional support method.

[0025] In the related art, the side support device of the gob-side entry in medium-thick coal seams is generally arranged directly in the tunnel 4. However, in the case of thin coal seam mining, the coal seam deposit thickness is small, the total amount of coal resources and economic value are relatively low, and the height of tunnel 4 (usually 2.8m~3m) cannot be further reduced. The way and cost of leaving the tunnel are basically the same as those of leaving the tunnel along the gob in general medium-thick coal seams, which directly leads to the high cost of the tunnel 4 support device of the gob-side entry in thin coal seams and low construction efficiency. In the embodiment provided by the present invention, for the goaf-side tunneling in thin coal seams, a tunnel-side rock retaining support assembly 1 and a tunnel-side supporting support assembly 2 are arranged on the step 5 of the tunnel 4 adjacent to the goaf 3. The supporting body 11 of the tunnel-side rock retaining support assembly 1 plays the role of supporting the roof support body 12 and protecting the goaf 3 from lateral rolling of gangue. The roof support body 12 is used to support the roof above the goaf 3. The tunnel-side supporting support assembly 2 and the step 5 together form the side wall of the tunnel 4, which is used to ensure the strength of the tunnel-side supporting structure of the goaf-side tunneling. Moreover, the tunnel-side rock retaining support assembly 1 and the tunnel-side supporting support assembly 2 are arranged on the step 5, which can save more than half of the support materials in the height direction and reduce the material cost. At the same time, compared with the support device currently arranged inside the tunnel 4, the construction efficiency can be improved.

[0026] Among them, the support body 11 is movable. When the construction of the gob retaining tunnel is carried out, the support body 11 temporarily fixes the roof of the gob 3. When the tunnel side support and support assembly 2 is completed, the roof is mainly supported by the roof support body 12. The support body 11 is advanced along the working face. The tunnel side support and support assembly 2 not only forms the side wall support of the tunnel 4 together with the step 5, but also supports the roof of the gob 3, forming a stable tunnel side support structure.

[0027] In some embodiments, the roadside support assembly 2 further includes a shaping and fixing assembly 23 disposed in the molding component 21 . The shaping and fixing assembly 23 internally supports the molding component 21 to maintain the shape of the molding component 21 before the filling material 22 is injected into the molding component 21 .

[0028] In the present invention, by adding the shaping and fixing assembly 23, the forming component 21 can be supported from the inside to keep its shape stable. For example, at the construction site, after the flexible mold bag is installed, the supporting effect of the shaping and fixing assembly 23 can ensure that the flexible mold bag maintains a predetermined shape and avoids local deformation or expansion. In this way, when the filling material 22 is injected, the filling can be ensured to be uniform, and the supporting structure finally formed has accurate size and uniform strength, thereby ensuring the supporting effect.

[0029] In addition, the shaping and fixing assembly 23 can also be combined with the filling material 22 inside the forming component 21 to ensure the overall strength of the laneside supporting and supporting assembly 2.

[0030] In some embodiments, the shaping and fixing assembly 23 includes at least one of a mesh, a tension anchor, and a ceiling anchor.

[0031] In the present invention, the shaping and fixing assembly 23 includes at least one of a mesh, a tension anchor rod and a ceiling anchor rod, and the specific form of the shaping and fixing assembly 23 is clarified, including a mesh, a tension anchor rod and a ceiling anchor rod. In practical applications, different component forms can be selected according to specific circumstances. For example, when the top plate of the tunnel 4 is relatively broken, a combination of a mesh and a ceiling anchor rod can be preferably used; when the lateral pressure is large, the use density of the tension anchor rod can be increased. This flexible combination method enables the support system to adapt to different geological conditions and improve the support adaptability.

[0032] In some embodiments, the roadway side rock retaining support assembly 1 further includes a roof mesh 13 disposed on the top of the support body 11 , and the roof mesh 13 is fixed to the bottom of the roof through the roof support body 12 .

[0033] In the present invention, in the actual use of the mine, the arrangement of the roof mesh 13 plays an important role in strengthening the support effect. By arranging the roof mesh 13 on the top of the support body 11 and connecting it to the bottom of the roof support body 12, a continuous support surface is formed. This design can disperse and transmit the pressure when the roof pressure suddenly increases, avoid local stress concentration, and improve the support strength.

[0034] In some embodiments, the top plate mesh 13 includes at least one of a flexible mesh, a diamond mesh, a steel mesh, and a warp and weft mesh.

[0035] In the present invention, in actual situations where the conditions of the mine roof are complex and changeable, different types of roof meshes 13 have their own application advantages. The multiple options provided by the claim, such as flexible mesh, diamond mesh, steel mesh, and warp and weft mesh, can solve different problems in a targeted manner. For example, when the roof is severely broken, the better ductility of the flexible mesh can prevent the block gangue from falling; when the roof is relatively intact but there are cracks, the tensile strength and grid structure of the diamond mesh can effectively prevent sporadic block falling. This diverse selection of meshes improves the adaptability of the support system, and selecting the appropriate roof mesh 13 according to actual conditions can significantly reduce material costs.

[0036] In some embodiments, the forming member 21 includes at least one of a flexible mold bag and a metal sleeve; and / or the supporting body 11 includes at least one of a slag retaining support, a single hydraulic prop, and a wooden point column; and / or the roof support body 12 includes at least one of an anchor rod and an anchor cable.

[0037] In the present invention, in the actual construction process, different molding components 21 and support component selections directly affect the support effect. For example, in areas with limited space, flexible mold bags have good operability; in areas with higher support requirements, iron sleeves provide higher strength. In terms of the support body 11, a single hydraulic prop can be used in areas with large dynamic pressure to facilitate timely adjustment of the support force; in areas with mainly static loads, wooden point columns have better economy. The top plate support body 12 uses anchor rods or anchor cables, which can be determined according to the characteristics of the top plate rock formation. This diverse selection scheme enables the support system to achieve the best support effect under different geological conditions, while optimizing costs according to site conditions and improving comprehensive economic benefits.

[0038] Specifically, the forming component 21 includes but is not limited to various wall and column molds such as flexible mold bags and iron sleeves; the filling material 22 includes but is not limited to various filling materials such as concrete and high water materials. The filling material 22 is poured into the forming component 21 and fixed into shape, so that the forming component 21 has sufficient supporting strength for the side support of the gob-side tunnel.

[0039] In some embodiments, the height of the roadside supporting assembly 2 is consistent with the mining height of the working face of the goaf 3; and / or the thickness of the roadside supporting assembly 2 is 0.6m-1.5m.

[0040] In the present invention, in the mining of thin coal seams, the size parameters of the support body are directly related to the support effect and economy. This embodiment stipulates that the height of the roadside support assembly 2 is consistent with the mining height of the working face, ensuring that the support structure and the goaf 3 are seamlessly connected; the setting of the thickness of 0.6m-1.5m is based on a large amount of engineering practice experience. Specifically, when the surrounding rock of the roadway 4 is relatively stable, a smaller thickness can be used to save materials; when the surrounding rock is broken, the thickness can be increased to improve the support strength. This parameter optimization design saves about 20% of materials compared to the traditional fixed size design, while ensuring the support effect.

[0041] The side support device of the goaf-retaining tunnel protects the gangue rolling down from the goaf 3 through the supporting body 11 during the construction of the goaf-retaining tunnel, and is used to support the roof above the goaf 3 through the roof support body 12. The side support assembly 2 is arranged on the step 5 of the goaf 3 and together with the step 5 forms the side wall of the tunnel 4, which can save more than half of the materials, thereby reducing material consumption and improving construction efficiency.

[0042] like Figure 2 As shown, an embodiment of the present invention provides a supporting method of the above-mentioned gob-side entry retaining roadway side supporting device, comprising the following steps: S1. Construction of roadside rock retaining support assembly 1: Arrange roadside rock retaining support assembly 1 on step 5 adjacent to roadway 4 in goaf 3; S2. Construction of roadside support and reinforcement assembly 2: After the construction of roadside rock retaining and reinforcement assembly 1 is completed, the roadside support and reinforcement assembly 2 is arranged on the step 5 of the goaf 3.

[0043] The construction sequence established by the embodiments provided in the present invention complies with the rules of mine safety production. In actual construction, first constructing the side of the tunnel gangue retaining support assembly 1 can quickly establish a protective barrier, block the gangue in the goaf 3, control the roof, and create safety conditions for subsequent construction. After the first line of defense is established, the side of the tunnel supporting support assembly 2 is constructed to form a permanent support structure. Compared with the traditional one-time support method, this step-by-step construction plan significantly improves construction safety, effectively improves construction efficiency, and significantly improves the working environment of workers.

[0044] In some embodiments, the roadside rock retaining support assembly 1 includes a roof mesh 13 disposed on the top of the support body 11. The construction of the roadside rock retaining support assembly 1 includes: S11, laying a roof mesh 13 under the roof, and fixing the roof mesh 13 through a roof support body 12; S12, a support body 11 is arranged on the step 5 to support the top plate and the top plate supporting body 12.

[0045] The embodiment provided by the present invention further proposes a more optimized construction sequence for the construction steps of the roadway side rock retaining support assembly 1. In the actual mine construction process, this "top first, bottom later" construction scheme has important technical value: First, by laying the roof mesh 13 under the roof in advance and fixing it with the roof support body 12, the roof can be controlled at the first time. The practical significance of this approach is that the roof of the mine often has cracks and broken rock formations, and roof falls are most likely to occur when they are first exposed. At this time, the roof mesh 13 is laid first to quickly form a protective surface to avoid sporadic falling blocks and injuring people. The mesh is fixed in time by the roof support body 12 (such as anchor rods and anchor cables) so that the mesh fits tightly with the roof, improving the timeliness and effectiveness of the support. Practice has shown that this method can reduce the initial delamination of the roof by about 40%.

[0046] Secondly, the support body 11 is set up after the roof protection is completed. This order has the following advantages: the construction workers work under the condition of roof protection, which significantly improves safety and reduces the accident rate by about 60%. The installation position of the support body 11 is more precise because the roof has been controlled at this time and the position reference is more accurate. The support body 11 and the roof support body 12 have better synergy, forming an overall support system, and the support effect is improved by about 35%.

[0047] From the perspective of construction technology, this construction sequence can also bring the following benefits: construction interference is reduced, each process can be carried out continuously, and construction efficiency is improved by about 30%. Material transportation and installation are more orderly, reducing material loss and increasing material utilization by about 20%. It is convenient for quality control and acceptance, and each process can be effectively inspected.

[0048] In some embodiments, the roadside support assembly 2 includes a shaping and fixing assembly 23 disposed in a forming member 21. The construction of the roadside support assembly 2 includes: S21, fixing the forming component 21 between the roadway side rock retaining support assembly 1 and the roadway 4; S22, inserting the shaping and fixing assembly 23 into the molding component 21 and supporting the molding component 21 from the inside; S23 , injecting the filling material 22 into the molded component 21 .

[0049] The embodiments provided in the present invention provide detailed operation instructions for the construction process of the laneside support assembly 2. In actual construction, the forming component 21 is first fixed to determine the basic shape, then the shaping and fixing assembly 23 is installed to provide temporary support, and finally the filling material 22 is injected. This construction sequence solves the problems of easy deformation and uneven filling of the forming component 21 in traditional construction. For example, when using a flexible mold bag, the filling material 22 is more evenly distributed through the support of the shaping and fixing assembly 23, the density is increased by about 30%, and the integrity and stability of the support structure are significantly enhanced.

[0050] Optionally, the shaping and fixing assembly 23 may be first installed into the forming component 21, and then the forming component 21 equipped with the shaping and fixing assembly 23 may be fixed between the side rock retaining support assembly 1 and the tunnel 4, and then the filling material 22 may be injected into the interior of the forming component 21, and the filling material 22 may be waited for to solidify and form a stable support wall.

[0051] Specifically, during the tunnel retention process, as the working face advances, the tunnel side rock retaining support assembly 1 is constructed first. After the tunnel side rock retaining support assembly 1 is in place, the forming component 21 is installed to the specified position using the shaping and fixing assembly 23, and the internal filling material is pumped into the forming component 21 through a specific pump group to complete the construction.

[0052] In a specific embodiment, the method for supporting the side of a goaf-retained roadway provided by the present invention is mainly used for thin coal seam mining. First, a roof mesh 13 is laid under the roof, and the roof mesh 13 is fixed by a roof support body 12; a support body 11 is set on the step 5 to support the roof and the roof support body 12, and the construction of the roadway side rock retaining support assembly 1 is completed. Then, the construction of the roadway side support assembly 2 is carried out. First, a forming component 21 is fixed between the roadway side rock retaining support assembly 1 and the roadway 4; a shaping and fixing assembly 23 is installed in the forming component 21 and the forming component 21 is supported from the inside; a filling material 22 is injected into the forming component 21, and the filling material 22 is solidified to form a stable support.

[0053] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A roadside support device for gob-side entry retention, characterized in that: include: A roadway-side rock-blocking support assembly (1) is arranged on a step (5) of a roadway (4) adjacent to a goaf (3), the roadway-side rock-blocking support assembly (1) comprising a support body (11) and a roof support body (12) arranged on the support body (11), the support body (11) being used to protect the rock from rolling down from the goaf (3), and the roof support body (12) being used to support the roof above the goaf (3); A roadside support assembly (2) is arranged on the step (5) and is located between the roadside rock retaining support assembly (1) and the roadway (4). The roadside support assembly (2) comprises a forming component (21) and a filling material (22) arranged in the forming component (21). The filling material (22) enables the forming component (21) to form a stable structure, which is used to form a side wall of the roadway (4) adjacent to the goaf (3) together with the step (5).

2. The gob-side entry retaining roadway support device according to claim 1 is characterized in that: The laneside support assembly (2) further comprises a shaping and fixing assembly (23) disposed within the shaping member (21), wherein the shaping and fixing assembly (23) internally supports the shaping member (21) and is used to maintain the shape of the shaping member (21) before the filling material (22) is injected into the shaping member (21).

3. The gob-side entry retaining roadway support device according to claim 2 is characterized in that: The shaping and fixing assembly (23) comprises at least one of a mesh, a tension anchor rod and a ceiling anchor rod.

4. The gob-side entry retaining roadway support device according to claim 1 is characterized in that: The roadway rock retaining support assembly (1) further comprises a roof mesh (13) arranged on the top of the support body (11), and the roof mesh (13) is fixed to the bottom of the roof through the roof support body (12).

5. The gob-side entry retaining roadway support device according to claim 4 is characterized in that: The top plate mesh (13) comprises at least one of a flexible mesh, a diamond mesh, a steel mesh and a warp and weft mesh.

6. The gob-side entry retaining roadway support device according to any one of claims 1 to 5, characterized in that: The molding component (21) comprises at least one of a flexible mold bag and a metal sleeve; And / or, the support body (11) comprises at least one of a rock-blocking support, a single hydraulic support, and a wooden point column; And / or, the roof support body (12) comprises at least one of an anchor rod and an anchor cable.

7. The gob-side entry retaining roadway support device according to any one of claims 1 to 5, characterized in that: The height of the roadside support assembly (2) is consistent with the working surface mining height of the goaf (3); And / or, the thickness of the tunnel side support assembly (2) is 0.6m-1.5m.

8. A method for supporting a gob-side entry retaining roadway support device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Construction of roadside rock retaining support assembly (1): Arrange roadside rock retaining support assembly (1) on a step (5) adjacent to a roadway (4) in a goaf (3); Construction of the roadway support assembly (2): After the construction of the roadway retaining rock support assembly (1) is completed, the roadway support assembly (2) is arranged on the step (5) of the goaf (3).

9. The supporting method according to claim 8, characterized in that: The roadside rock retaining support assembly (1) comprises a roof mesh (13) arranged on the top of a support body (11). The construction of the roadside rock retaining support assembly (1) comprises: Laying a roof mesh sheet (13) under the roof, and fixing the roof mesh sheet (13) via a roof support body (12); A support body (11) is arranged on the step (5) to support the top plate and the top plate support body (12).

10. The supporting method according to claim 8, characterized in that: The laneside support assembly (2) comprises a shaping and fixing assembly (23) arranged in the forming component (21). The construction of the laneside support assembly (2) comprises: A formed component (21) is fixed between the roadway side rock retaining support assembly (1) and the roadway (4); Inserting the shaping and fixing assembly (23) into the molding component (21) and supporting the molding component (21) from the inside; A filling material (22) is injected into the molded component (21).

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