Supporting device for construction of right-angle intersection point of inclined lane and flat lane in fully-mechanized excavation

Abstract

This invention discloses a support device for construction at a right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway. The device includes a right-angle intersection roadway with an arc-shaped corner at the intersection. A multi-directional composite support device is installed at the arc-shaped corner, comprising an arc-shaped support group covering the outer side of the arc-shaped corner. Multiple sets of clamping seats are fixed to the arc-shaped support group, and a support core column is located on the outer side of the clamping seats. This support device for construction at a right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway solves the defects of poor fit and uneven stress distribution between traditional straight temporary supports and the arc-shaped roadway sidewalls. It significantly increases the contact area between the support structure and the surrounding rock, fully covers the arc-shaped transition rock area, effectively prevents support blind spots and empty roof / sidewall phenomena at corners, ensures sufficient and uniformly distributed support bearing area, and weakens the adverse effects of local stress concentration in the arc-shaped surrounding rock from a structural foundation perspective.

Description

Technical Field

[0001] This invention relates to the field of fully mechanized inclined tunnel construction, specifically a support device for construction at the right-angle intersection of a fully mechanized inclined tunnel and a horizontal tunnel. Background Technology

[0002] When the inclined tunnel reaches the point where it intersects with the horizontal tunnel at a right angle, the slope transition and cross-section widening plan should be prepared in advance according to the centerline and waistline. The tunnel should be excavated in an orderly manner by using a step-by-step guide tunnel and a segmented widening method. The tunnel formation should be strictly controlled, and advance temporary support should be maintained to prevent unsupported roof operations. In the large span area at the intersection, the anchor bolts and cables should be densified to strengthen the joint support. The transfer equipment should be connected simultaneously, and the ventilation and transportation systems should be streamlined to smoothly complete the right-angle turning transition construction. After the formation, the surrounding rock should be reinforced with shotcrete in a timely manner to ensure the stability and safety of the roof and two sides at the intersection.

[0003] Regarding the patent for the construction of a right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway, a search revealed Chinese patent CN113236258A, which discloses a novel construction process for this intersection. The process includes: constructing the roadway to point A, disengaging the transfer conveyor from the roadheader, extending the scraper conveyor to the tail of the roadheader, and using the roadheader to widen the left and right sides of the roadway in the direction of excavation. This widening is continued until point B, where the roadway slope is adjusted to a horizontal roadway and excavation continues until point C. Excavation of the left side of the roadway is then stopped, and the roadway continues to L5 and L6 according to the marked horizontal roadway centerline. Permanent support is provided for the coal wall at L5 and L6, and temporary support is provided for the left and right sides in the direction of excavation. The roadheader is then moved back, and the temporary support is destroyed to widen the un-excavated area of ​​the left side of the roadway to the designed dimensions, followed by permanent support.

[0004] When the above-mentioned device is used in actual use to expand and support the unexpanded areas on both sides of the right-angle intersection of the roadway using temporary support, the right-angle intersection is an arc-shaped corner, and the temporary support is a flat covering support structure. The fit with the arc-shaped roadway side is poor, the support stress is uneven, and the effective support area of ​​the temporary support cannot completely cover the arc-shaped transition surrounding rock. Support blind spots, empty roof and empty side are likely to occur at the corners. The support bearing area is insufficient, and the stress concentration area of ​​the arc-shaped surrounding rock is not effectively constrained, which can easily cause roof delamination and side deformation, posing a significant safety hazard. Summary of the Invention

[0005] The purpose of this invention is to provide a support device for construction at the right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a support device for construction at the right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway is provided. The device includes a right-angle intersection roadway with an arc-shaped corner at the intersection. A multi-directional composite support device is provided at the arc-shaped corner. The multi-directional composite support device includes an arc-shaped support group covering the outside of the arc-shaped corner. Multiple sets of clamping seats are fixed on the arc-shaped support group, and a support core column is provided on the outside of the clamping seats.

[0007] Furthermore, the arc-shaped support group includes a top seat fixedly supported at the top of the right-angle intersection roadway and a base fixedly supported at the bottom of the right-angle intersection roadway, and both the base and the top seat have an arc-shaped structure, while both the base and the top seat have an "L" shaped cross-section.

[0008] Furthermore, the base and the top seat are distributed in parallel, and multiple sets of adjustable support plates are provided between the base and the top seat, while the adjustable support plates cover the outer wall of the arc-shaped corner circumference.

[0009] Furthermore, multiple sets of adjustment holes are provided through the multiple sets of adjustment support plates, and vertical support columns are inserted into each of the multiple sets of adjustment holes. The top of the vertical support column is connected to the top seat, and the bottom of the vertical support column is connected to the base. The multiple sets of adjustment support plates cover the outer side of the arc corner and are adjusted through the adjustment holes and vertical support columns, and are clamped and fixed by clamping groups.

[0010] Furthermore, the clamping group includes a locking platform covering the outside of the support core column, and the bottom of the locking platform has a slot that engages with the outer wall of the support core column. Both ends of the locking platform are provided with fixing studs, and fixing studs are screwed through the locking platform with fixing nuts. Both sets of fixing studs are fixed on the adjusting support plate. Multiple sets of locking platforms are equidistantly arranged along the length of the support core column.

[0011] Furthermore, multiple sets of the support core columns are equidistantly distributed along the circumferential direction of the arc-shaped corner, and a vertical support group is provided on one side of the support core column. The vertical support group includes support cylinders that are also equidistantly distributed along the circumferential direction of the arc-shaped corner, and the support cylinders are distributed parallel to the support core columns.

[0012] Furthermore, the bottom of the support cylinder is fixed with a base, and the output end of the support cylinder is connected to a top support platform. The top support platform is fixed at the top of the right-angle intersection roadway. Multiple sets of the support core columns and support cylinders are combined to form a dense support mechanism for the right-angle intersection roadway.

[0013] Furthermore, the multiple sets of support cylinders are provided with multiple sets of connecting reinforcement frames on their outer sides, and multiple sets of weight reduction holes are provided through the connecting reinforcement frames. The multiple sets of support cylinders are connected to form an integral structure through the connecting reinforcement frames.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution involves setting up an arc-shaped support group at the arc-shaped corner of a right-angle intersection roadway. The top and base of the arc-shaped structure work together with the flexibly adjustable support plates to adapt to the irregular rock wall contour of the arc-shaped corner. This completely solves the defects of poor fit and uneven stress distribution between traditional straight temporary support and arc-shaped roadway sidewalls. It significantly increases the contact area between the support structure and the surrounding rock, fully covers the arc-shaped transition surrounding rock area, effectively eliminates support blind spots and empty tops and sides at corners, ensures sufficient and uniformly distributed support bearing area, and weakens the adverse effects of local stress concentration in the arc-shaped surrounding rock from the structural foundation.

[0015] 2. This scheme forms a high-strength, multi-directional, composite, and dense support system by equidistantly arranging multiple sets of support core columns and integrated support cylinders along the circumference of the arc-shaped corner, combined with the locking and fixing structure of the clamping group seats and the overall connecting frame constructed by the connecting reinforcement frame. This system can provide all-round rigid support and active restraint for the roof and surrounding rock of the arc-shaped corner, effectively suppressing the instability of the surrounding rock such as roof delamination and sidewall deformation. It is perfectly adapted to the complex working conditions of step-by-step expansion of the left side of the roadway and the disassembly and switching of temporary support during fully mechanized tunneling construction, significantly improving the overall support stability and operational safety during the construction process of right-angle intersections, and reducing the safety risks of roadway construction at special intersections underground. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a bottom view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a schematic diagram of the clamping group seat connection structure of the present invention; Figure 5 This is a schematic diagram of the top seat connection structure of the present invention; Figure 6 This is a schematic diagram of the connection structure of the support core column of the present invention; Figure 7 This is a schematic diagram of the vertical support group and its connection structure of the present invention; Figure 8 This is a schematic diagram of the base and its connection structure of the present invention; Figure 9 For the present invention Figure 8 Side view; Figure 10 This is a schematic diagram of the clamping group seat connection structure of the present invention.

[0017] The diagram is labeled as follows: 100, right-angle intersection roadway; 101, arc-shaped corner; 200, multi-directional composite support device; 201, arc-shaped support group; 2011, adjustable support plate; 20111, adjustable perforation; 20112, vertical support column; 2012, base; 2013, top support; 202, clamping group seat; 2021, locking platform; 2022, slot; 2023, fixing stud; 2024, fixing nut; 203, vertical support group; 2031, base; 20311, top support platform; 2032, connecting reinforcement frame; 2033, support cylinder; 204, support core column. Detailed Implementation

[0018] Please see Figures 1-10 This invention provides a support device for construction at the right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway, including a right-angle intersection roadway 100, an arc-shaped corner 101 at the right-angle intersection roadway 100, and a multi-directional composite support device 200 at the arc-shaped corner 101. The multi-directional composite support device 200 includes an arc-shaped support group 201 covering the outside of the arc-shaped corner 101, and multiple sets of clamping seats 202 are fixed on the arc-shaped support group 201. At the same time, a support core column 204 is provided on the outside of the clamping seat 202.

[0019] As a preferred embodiment, the arc-shaped support group 201 includes a top seat 2013 fixedly supported at the top of the right-angle intersection roadway 100 and a base 2012 fixedly supported at the bottom of the right-angle intersection roadway 100. Both the base 2012 and the top seat 2013 have an arc-shaped structure, and both the base 2012 and the top seat 2013 have an "L" shaped cross-section.

[0020] The base 2012 and the top seat 2013 are distributed in parallel, and multiple sets of adjustable support plates 2011 are provided between the base 2012 and the top seat 2013. At the same time, the adjustable support plates 2011 cover the outer circumference of the arc corner 101.

[0021] Multiple sets of adjustable support plates 2011 are provided with multiple sets of adjustable through holes 20111, and vertical support columns 20112 are inserted into each set of adjustable through holes 20111. The top of the vertical support column 20112 is connected to the top seat 2013, and the bottom of the vertical support column 20112 is connected to the base 2012. The multiple sets of adjustable support plates 2011 cover the outer side of the arc corner 101 and are adjusted through the adjustable through holes 20111 and vertical support columns 20112, and are clamped and fixed by clamping group seats 202.

[0022] like Figure 1-3As shown: An overall arc-shaped adaptive structure design is adopted, so that the L-shaped arc-shaped top seat 2013 and the arc-shaped base 2012 in the arc-shaped support group 201 are arranged in parallel and corresponding positions, matching the special curved surface contour of the arc-shaped corner 101 of the right-angle intersection roadway 100. This breaks through the structural limitations of traditional straight support, relying on multiple sets of adjustable support plates 2011 to fully fit and wrap the outer circumference of the arc-shaped corner 101, combined with the adaptive structure of the adjustable perforation 20111 and the vertical support 20112. The installation position and spacing of the support plate 2011 can be flexibly adjusted according to the actual curvature of the curved surrounding rock on site. Combined with the clamping group seat 202, the overall clamping and positioning can be achieved, realizing the adjustable and adaptable installation of the support structure. This effectively improves the support fit and stress uniformity, eliminates the blank area of ​​the curved corner 101 support, and enhances the overall constraint capacity of the curved surrounding rock. The structural adaptability, adjustability and surrounding rock fit support capacity have outstanding creative improvements compared with conventional fixed support structures.

[0023] The clamping group 202 includes a locking platform 2021 covering the outside of the support core column 204, and a slot 2022 is provided at the bottom of the locking platform 2021. The slot 2022 is engaged with the outer wall of the support core column 204. A fixing stud 2023 is provided through both ends of the locking platform 2021, and a fixing nut 2024 is screwed through the locking platform 2021 to the fixing stud 2023. Both sets of fixing studs 2023 are fixed on the adjusting support plate 2011. Multiple sets of locking platforms 2021 are equidistantly arranged along the length of the support core column 204.

[0024] like Figure 4-8 As shown: The clamping group 202 uses the slot 2022 at the bottom of the locking platform 2021 to form a locking and limiting fit with the outer wall of the support core column 204. With the fixing studs 2023 penetrating both ends of the locking platform 2021 and the matching fixing nuts 2024, the locking platform 2021 and the adjusting support plate 2011 are rigidly and securely connected. Multiple sets of locking platforms 2021 are equidistantly arranged along the length of the support core column 204 to form a multi-point uniform clamping and fixing structure. This abandons the traditional single welding or binding fixing method, making installation and disassembly convenient and efficient. The clamping force is evenly distributed, which can adapt to the deformation of the arc support for fine adjustment, prevent the support components from being misaligned and loosened, strengthen the overall connection and structural stability between the adjusting support plate 2011 and the support core column 204, and greatly improve the connection strength and assembly flexibility of the overall support frame. It is suitable for the modular support assembly operation requirements in complex surrounding rock conditions at intersection points.

[0025] Multiple sets of support core columns 204 are equidistantly distributed along the circumferential direction of the arc-shaped corner 101, and a vertical support group 203 is provided on one side of the support core column 204. The vertical support group 203 includes support cylinders 2033 that are also equidistantly distributed along the circumferential direction of the arc-shaped corner 101, and the support cylinders 2033 are distributed parallel to the support core column 204.

[0026] Multiple sets of support core columns 204 are arranged at equal intervals along the circumference of the arc-shaped corner 101, and are equipped with vertical support groups 203 and internal support cylinders 2033 that are equally distributed circumferentially and parallel to the support core columns 204. The support cylinders 2033 are stabilized and limited by their bottom bases 2031, and actively pressurize the top of the right-angle intersection roadway 100 with their output top support platform 20311. The support core columns 204 and support cylinders 2033 work together to form a dense support structure, and at the same time, the connection with weight reduction holes is used to add The strong frame 2032 connects each set of support cylinders 2033 into an integrated structure, which not only achieves full-circumferential three-dimensional protection without dead angles at the arc corner 101, effectively dispersing the concentrated stress in the arc area, but also significantly improves the overall support frame's synergistic load-bearing capacity and deformation resistance while reducing the structure's self-weight. It avoids the drawbacks of uneven stress and poor overall stability of scattered support, and can provide dynamic support force in real time according to the deformation of the surrounding rock in the roadway, significantly enhancing the surrounding rock control effect and the overall impact resistance performance of the support structure at the special irregular position of the right-angle intersection roadway 100.

[0027] like Figure 1-4 As shown: By setting up an arc-shaped support group 201 at the arc-shaped corner 101 of the right-angle intersection roadway 100, the top seat 2013 and base 2012 of the arc-shaped structure cooperate with the flexibly adjustable support plate 2011 to adapt to the irregular rock wall contour of the arc-shaped corner 101. This completely solves the defects of poor fit and uneven stress between traditional straight temporary support and arc-shaped roadway sidewall. It significantly increases the contact area between the support structure and the surrounding rock, fully covers the arc-shaped transition surrounding rock area, effectively prevents the occurrence of support blind spots and empty roof and sidewall at the corner, ensures sufficient and uniformly distributed support bearing area, and weakens the adverse effects of local stress concentration in the arc-shaped surrounding rock from the structural basis.

[0028] The bottom of the support cylinder 2033 is fixed with a base 2031, and the output end of the support cylinder 2033 is connected to a top support platform 20311. The top support platform 20311 is fixed on the top of the right-angle intersection roadway 100. Multiple sets of support core columns 204 and support cylinder 2033 are combined to form a dense support mechanism for the right-angle intersection roadway 100.

[0029] Multiple sets of support cylinders 2033 are provided with multiple sets of connecting reinforcement frames 2032 on the outside, and multiple sets of weight reduction holes are provided through the connecting reinforcement frames 2032. The multiple sets of support cylinders 2033 are connected to form an integral structure through the connecting reinforcement frames 2032.

[0030] like Figure 2-8As shown: By equidistantly arranging multiple sets of support core columns 204 and integrated support cylinders 2033 along the circumference of the arc-shaped corner 101, and combining the locking and fixing structure of the clamping group seat 202 with the overall connecting frame constructed by the connecting reinforcement frame 2032, a high-strength multi-directional composite dense support system is formed. This system can provide all-round rigid support and active constraint for the roof and surrounding rock of the arc-shaped corner 101, effectively suppressing the instability of the surrounding rock such as roof delamination and sidewall deformation. It is perfectly adapted to the complex working conditions of step-by-step expansion of the left side of the roadway and the disassembly and assembly of temporary supports during the fully mechanized tunneling construction, significantly improving the overall support stability and operational safety of the construction process at the right-angle intersection, and reducing the safety risks of roadway construction at special intersections underground.

[0031] Working principle: During the construction of the right-angle intersection of the inclined tunnel and the horizontal tunnel, a multi-directional composite support device 200 is installed at the arc-shaped corner 101 of the right-angle intersection tunnel 100. This device is based on an arc-shaped support group 201 that conforms to the contour of the arc-shaped corner 101. The arc-shaped support group 201 consists of a top seat 2013 and a base 2012 arranged in parallel, corresponding to the top and bottom of the right-angle intersection tunnel 100, both with arc-shaped L-shaped cross-sections. Multiple sets of adjustable support plates 2011 are installed between the top seat 2013 and the base 2012, which conform to and wrap around the outer circumference of the arc-shaped corner 101. The adjustment is achieved by using the adjustment perforations 20 inside the adjustable support plates 2011. 111 Insert vertical support column 20112, so that the upper and lower ends of vertical support column 20112 are connected to top seat 2013 and base seat 2012 respectively. In this way, the placement position and contact range of the adjustment support plate 2011 can be flexibly adjusted according to the actual curvature of the arc angle 101. Then, the clamping group seat 202 fixed on the adjustment support plate 2011 is used to complete the overall locking and fixing. The clamping group seat 202 is locked and fitted onto the outer wall of the support core column 204 by the slot 2022 at the bottom of the locking platform 2021. With the thread locking cooperation of the fixing stud 2023 and fixing nut 2024, the locking platform 2021, the support core column 204, and the adjustment support plate 2011 are stably connected.

[0032] Multiple sets of support core columns 204, equidistantly distributed along the circumference of the arc-shaped corner 101, are paired with support cylinders 2033 inside the parallel and equally spaced vertical support groups 203. The support cylinders 2033 are fixed at a low position through the bottom base 2031, and their output ends are connected to the top support platform 20311, which fits tightly against the top rock wall of the right-angle intersection roadway 100. At the same time, multiple sets of support cylinders 2033 are interconnected through connecting reinforcement frames 2032 with weight-reducing holes to form an integrated frame. The support core column 204 and the vertical support group 203 together form a dense support structure at the arc-shaped corner 101. The traditional flat and covered temporary support structure is completely abandoned. It fits the irregular rock contour of the arc-shaped corner 101 in all directions, completely covers the arc-shaped transition rock area, eliminates the blind spot and empty roof and sidewall problems at the corner position, evenly disperses the concentrated stress of the arc-shaped rock, continuously restrains the deformation of the roadway roof and the surrounding rock on both sides, and adapts to the rock support needs of the entire process of the step-by-step expansion construction at the intersection point.

[0033] The specific operation method of the support device for the construction of the right-angle intersection of the inclined roadway and the horizontal roadway is as follows: S1: Preliminary preparation and positioning. After the inclined roadway is constructed to the planned position, the right-angle intersection roadway 100 and the arc corner 101 are marked and marked. The loose coal and debris in the area of ​​the arc corner 101 are cleared to ensure that the construction surface is flat. At the same time, the integrity and compatibility of the components required for support, such as the arc support group 201, the clamping group seat 202, the vertical support group 203, and the support core column 204, are checked.

[0034] S2: The arc-shaped support group 201 is installed and fixed. First, the arc-shaped base 2012 with an "L"-shaped cross section is fixedly supported at the bottom of the right-angle intersection roadway 100. The top seat 2013, which also has an arc-shaped "L"-shaped structure, is fixedly supported at the top of the roadway. This ensures that the base 2012 and the top seat 2013 are distributed in parallel and precisely fit the contour of the arc-shaped corner 101. Then, multiple sets of adjustable support plates 2011 are arranged between the base 2012 and the top seat 2013 so that the adjustable support plates 2011 completely cover the outer circumference of the arc-shaped corner 101.

[0035] S3: Adjusting the fixing and clamping positioning, inserting the vertical support column 20112 into the adjusting through hole 20111 on the adjusting support plate 2011, so that the top of the vertical support column 20112 is connected to the top seat 2013 and the bottom is connected to the base 2012. According to the actual curvature of the arc angle 101, adjust the fitting position of the adjusting support plate 2011 by adjusting the cooperation between the adjusting through hole 20111 and the vertical support column 20112. Then, the locking platform 2021 of the clamping group seat 202 is clamped to the outer wall of the support core column 204 through the slot 2022. The locking platform 2021 is fixed on the adjusting support plate 2011 by using the fixing stud 2023 and the fixing nut 2024. Multiple sets of locking platforms 2021 are arranged at equal intervals along the length direction of the support core column 204 to complete the clamping and fixing.

[0036] S4: Dense support forming and reinforcement. Multiple sets of support core columns 204 are equidistantly arranged along the circumference of the arc corner 101. A vertical support group 203 is installed on one side of the support core column 204, so that the support cylinders 2033 in the vertical support group 203 are parallel to and equidistantly distributed with the support core column 204. The support cylinders 2033 are fixed by the bottom base 2031, so that the top support platform 20311 of its output end is fixedly attached to the top of the right-angle intersection roadway 100. Then, the multiple sets of support cylinders 2033 are connected into an integral structure by the connecting reinforcement frame 2032 with weight reduction holes, so that the support core column 204 and the support cylinders 2033 are combined to form a dense support mechanism, completing the comprehensive support of the arc corner 101 area, and adapting to the subsequent step-by-step excavation construction.

Claims

1. A support device for construction of a right-angle intersection of a inclined roadway and a flat roadway by a fully-mechanized inclined roadway, comprising a right-angle intersection roadway (100), characterized in that: The right-angle intersection roadway (100) is provided with an arc-shaped corner (101), and a multi-directional composite support device (200) is provided at the arc-shaped corner (101). The multi-directional composite support device (200) includes an arc-shaped support group (201) covering the outside of the arc-shaped corner (101), and multiple sets of clamping seats (202) are fixed on the arc-shaped support group (201). At the same time, a support core column (204) is provided on the outside of the clamping seat (202).

2. The support device for construction at the right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway according to claim 1, characterized in that: The arc-shaped support group (201) includes a top seat (2013) fixedly supported at the top of the right-angle intersection roadway (100) and a base seat (2012) fixedly supported at the bottom of the right-angle intersection roadway (100). Both the base seat (2012) and the top seat (2013) have an arc-shaped structure, and both the base seat (2012) and the top seat (2013) have an "L" shaped cross section.

3. A support device for construction at a right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway according to claim 2, characterized in that: The base (2012) and the top seat (2013) are arranged in parallel, and multiple sets of adjustable support plates (2011) are provided between the base (2012) and the top seat (2013). At the same time, the adjustable support plates (2011) cover the outer circumference of the arc corner (101).

4. A support device for construction at a right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway according to claim 3, characterized in that: Multiple sets of adjustable support plates (2011) are provided with multiple sets of adjustable through holes (20111), and each set of adjustable through holes (20111) is inserted with a vertical support column (20112). The top of the vertical support column (20112) is connected to the top seat (2013), and the bottom of the vertical support column (20112) is connected to the base (2012). The multiple sets of adjustable support plates (2011) are covered on the outside of the arc corner (101) and are adjusted by the adjustable through holes (20111) and vertical support columns (20112), and are clamped and fixed by clamping group seat (202).

5. A support device for construction at a right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway according to claim 4, characterized in that: The clamping group (202) includes a locking platform (2021) covering the outside of the support core column (204), and a slot (2022) is provided at the bottom of the locking platform (2021). The slot (2022) is engaged with the outer wall of the support core column (204). A fixing stud (2023) is provided through both ends of the locking platform (2021), and a fixing nut (2024) is screwed through the locking platform (2021). Both sets of fixing studs (2023) are fixed on the adjusting support plate (2011). Multiple sets of locking platforms (2021) are equidistantly arranged along the length direction of the support core column (204).

6. A support device for construction at a right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway according to claim 5, characterized in that: Multiple sets of the support core columns (204) are equidistantly distributed along the circumferential direction of the arc-shaped corner (101), and a vertical support group (203) is provided on one side of the support core column (204). The vertical support group (203) includes support cylinders (2033) that are also equidistantly distributed along the circumferential direction of the arc-shaped corner (101), and the support cylinders (2033) are distributed parallel to the support core column (204).

7. A support device for construction at a right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway according to claim 6, characterized in that: The bottom of the support cylinder (2033) is fixed with a base (2031), and the output end of the support cylinder (2033) is connected to a top support platform (20311). The top support platform (20311) is fixed on the top of the right-angle intersection roadway (100). Multiple sets of the support core columns (204) and the support cylinder (2033) are combined to form a dense support mechanism for the right-angle intersection roadway (100).

8. A support device for construction at a right-angle intersection of a fully mechanized inclined roadway and a horizontal roadway according to claim 7, characterized in that: Multiple sets of connecting reinforcement frames (2032) are provided on the outside of the multiple sets of support cylinders (2033), and multiple sets of weight reduction holes are provided through the connecting reinforcement frames (2032). The multiple sets of support cylinders (2033) are connected to form an integral structure through the connecting reinforcement frames (2032).

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