Rapid supporting bracket for continuous mining and continuous filling and supporting method

Abstract

The invention belongs to the technical field of coal mine tunnel supporting, and particularly relates to a rapid supporting support for continuous mining and continuous filling and a supporting method.The rapid supporting support comprises a plurality of support single bodies and a distance adjusting assembly, the support single bodies are linearly arranged in the same direction, and each support single body comprises a telescopic left stand column, a telescopic right stand column and a top beam; the left stand column and the right stand column are arranged at the two ends of the top beam respectively and perpendicularly fixed to the top beam. The interval adjusting assembly is arranged between the multiple support single bodies and used for adjusting and fixing the supporting interval of the multiple support single bodies so as to form a tunneling supporting barrier. According to the device, a roof in the roadway mining process can be rapidly and timely supported and supported along with tunneling of a branch roadway, different supporting strengths can be conveniently provided for the roof according to a complex geological environment by means of the adjustability of the distance between every two adjacent support single bodies, rapid propelling of a continuous mining and continuous filling working face is facilitated, and the working efficiency is improved. And the tunneling efficiency of the branch roadway and the production efficiency of continuous mining and continuous filling are effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine tunnel support, and in particular relates to a quick support bracket and a support method for continuous mining and filling. Background Art

[0002] In order to enhance the understanding of students majoring in mining engineering on the basic theories and methods of solid mineral deposit mining, students often organize teams to go to different coal mining bases for in-depth practice and research. During the practice, they have made major breakthroughs in the research and development of key technologies and instruments for mine geological structure and disaster source detection, effectively avoiding the occurrence of coal mine safety accidents.

[0003] Among them, the continuous mining and continuous filling mining method is the key technology to solve the "three-down" coal pressure and recover the corner coal pillars. This technology divides the roof into narrow strips to prevent the natural collapse of the roof, and uses instant filling to support the roof, effectively reducing the structural damage of the overlying rock layer, and plays a role in protecting the overlying rock structure. In addition, the continuous mining and continuous filling mining method can fill the gangue generated during the mining process into the tunnel through a slurry mixed with cement and fly ash. The filling body with a strong strength can effectively control the collapse of the roof, reduce the degree of damage to the overlying rock layer, and then control the surface subsidence and deformation, and realize green mining of the mine.

[0004] Continuous mining and filling production depends on the efficiency of tunneling and support in coal mines. Usually, the annual coal output of a set of continuous mining and filling equipment is about 300,000 to 400,000 tons / a, which is far from the production capacity of one million tons of normal working faces. The main reason for the low efficiency of continuous mining and filling operations is that in order to ensure safety during the excavation of branch tunnels, the roof must be reinforced by installing anchor rods, anchor cables and anchor nets on the roof. This support and reinforcement measure is time-consuming and labor-intensive, occupying a large amount of excavation operation time, thereby significantly reducing the efficiency of branch tunnel excavation. The reduction in the efficiency of branch tunnel excavation limits the efficiency of continuous mining and filling operations, which ultimately leads to a reduction in the overall efficiency of continuous mining and filling operations. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a rapid supporting bracket and supporting method for continuous mining and filling, which can realize rapid and timely mobile support of the tunnel as the branch tunnel is excavated, facilitate the rapid advancement of the continuous mining and filling working face, and effectively improve the excavation efficiency of the branch tunnel and the production efficiency of continuous mining and filling.

[0006] The technical solution of the present invention is: A rapid support bracket for continuous mining and filling, comprising: A plurality of support units are arranged linearly along the mining direction of the branch lane of the coal mine, and the support units include a left column, a right column and a top beam that can be telescopically adjusted, and the left column and the right column are respectively arranged at both ends of the top beam, and the left column and the right column are vertically fixed to the top beam; The spacing adjustment assembly includes a first adjustment unit, a second adjustment unit and a third adjustment unit, and the three have the same structure. The first adjustment unit is used for the mutual connection and spacing adjustment of multiple left columns, the second adjustment unit is used for the mutual connection and spacing adjustment of multiple right columns, and the third adjustment unit is used for the mutual connection and spacing adjustment of multiple top beams; the first adjustment unit includes multiple first connecting rods and second connecting rods arranged one by one, and multiple first connecting rods or second connecting rods are hinged in sequence head to tail, the corresponding first connecting rods and second connecting rods are cross-arranged and both are hinged to one of the left columns at the intersection, and the left columns located on both sides of the intersection of the first connecting rod and the second connecting rod are slidably connected to the first connecting rod and the second connecting rod through a sliding module. In the actual continuous mining and filling process, the first adjustment unit, the second adjustment unit and the third adjustment unit are used to adjust the spacing between adjacent support monomers, so that the overall width and height of the multiple support monomers meet the size of the branch lane to be mined, forming a support barrier for the excavation of the branch lane, and then the position of the support monomer and the spacing between adjacent support monomers are adaptively adjusted according to the mining depth of the branch lane to meet the support requirements, so as to achieve rapid support.

[0007] Preferably, the sliding module includes a sliding sleeve, which is mounted on the left column, one end of the first connecting rod or the second connecting rod is hinged to the sliding sleeve, a sliding block is fixedly connected to the inner wall of the sliding sleeve, and a sliding groove for cooperating with the sliding block is provided on the side wall of the left column.

[0008] Preferably, the connecting ends of two adjacent first connecting rods or second connecting rods are hinged on a sliding sleeve on the same left column.

[0009] Preferably, a fixing structure is provided between the sliding sleeve and the left column, and the fixing structure comprises a bolt, and the bolt is inserted through the sliding sleeve and the two are threadedly connected, and the bolt is used to realize the tight fixation and separation adjustment of the sliding sleeve and the left column.

[0010] Preferably, the left column, the right column and the top beam all include a fixed rod, a movable rod and an electric hydraulic push rod, the movable rod is coaxial with the fixed rod and the two are plug-fitted, the fixed end of the electric hydraulic push rod is fixedly connected to the fixed rod, and the telescopic end of the electric hydraulic push rod is fixedly connected to the movable rod.

[0011] Preferably, according to the above-mentioned rapid support bracket for continuous mining and filling, the support method thereof comprises the following steps: Step 1: Dig the air inlet chute, return air chute and cut hole according to the layout of the longwall mining working face, and divide the branch lanes; Step 2: Use the first connecting rod, the second connecting rod and the sliding module in the first adjustment unit, the second adjustment unit and the third adjustment unit to adjust the spacing between adjacent support units, and adjust the telescopic length of the left column, the right column and the top beam, so that the width and height of each branch tunnel are adapted to the excavation support barrier formed by the multiple support units, so as to achieve the abutment of the top beam with the top plate used for supporting the top wall of the branch tunnel; Step 3: During the excavation and mining process of the branch tunnel, after the branch tunnel has been excavated to a certain depth, and according to the geological conditions, the position of the support unit and the spacing between adjacent support units are adaptively adjusted to meet the support requirements, and as the branch tunnel advances, the support support gradually supports the top plate to move forward; Step 4: After the excavation and mining of the branch tunnel is completed, the branch tunnel is filled. During the filling process, the support bracket is slowly withdrawn until the filling is completed.

[0012] Preferably, the method for forming the excavation support barrier is: Move the quick support bracket as a whole to the position of the branch tunnel to be supported, so that the lower end of each bracket monomer is placed stably on the ground and the lower ends of all bracket monomers are at the same horizontal height; By adjusting the telescopic adjustment of the left and right columns, the height of the top beam is made the same as the top height of the branch tunnel; By adjusting the telescopic adjustment of the top beam, the left and right columns on both sides are pulled to move along the width direction of the branch tunnel at the same time until the distance between the left and right columns on both sides is the same as the width of the branch tunnel; By using the first adjustment unit, the second adjustment unit and the first connecting rod and the second connecting rod in the third adjustment unit to hinge and rotate together, the spacing between adjacent support monomers can be adjusted so that the support length of the entire rapid support support meets the support requirements of the mining depth.

[0013] Preferably, the width of the branch lane is determined according to the following formula: , In the formula, L is the width of the branch lane, in m; is the roof thickness of the branch tunnel, in m; is the allowable shear stress of the rock beam, in MPa; W It is the transverse uniformly distributed load of the rock beam, in MPa.

[0014] Preferably, the spacing between adjacent stent monomers is determined according to the following formula: , in, , , In the formula, is the spacing between adjacent bracket monomers, in m; It is the pressure of the rock on the supporting frame per meter of the tunnel roof, in kN / m. is the bulk density of the roof rock, in kN / m 3 , is the strength coefficient of the roof rock, is the half span of the roadway, in m; is the failure load of the support, in kN, It is the compressive / tensile strength of the support material, in MPa; is the bending section modulus of the support material, in cm 3 ; l is the span of the support bracket, in m.

[0015] Preferably, the compressive / tensile strength of the material used for the bracket monomer is The value range is 375Mpa-345Mpa; the bending section modulus range of the support monomer material is 166cm 3 -332cm 3 .

[0016] Compared with the prior art, the rapid support bracket and support method for continuous mining and filling of the present invention have the following beneficial effects: This device utilizes a tunneling support barrier formed by multiple support units and spacing adjustment components to cooperate with the branch tunnels during mining and tunneling. It can quickly and timely support the roof during tunnel mining as the branch tunnels advance. The first adjustment unit, the second adjustment unit and the third adjustment unit are used to adjust the spacing between two adjacent support units, as well as the telescopic adjustment characteristics of the left column, the right column and the top beam. This facilitates the provision of different support strengths for the roof according to complex geological environments, facilitates the rapid advancement of the continuous mining and filling working face, and effectively improves the tunneling efficiency of the branch tunnels and the production efficiency of continuous mining and filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2 It is a structural schematic diagram of the left column in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the top beam in an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the sliding module in an embodiment of the present invention.

[0018] Description of reference numerals: 1. Left column; 2. Right column; 3. Top beam; 4. First connecting rod; 5. Second connecting rod; 6. Sliding sleeve; 7. Slide groove; 8. Bolt. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0021] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] See also Figures 1 to 3 As shown, in order to realize the rapid and timely mobile support of the tunnel as the branch tunnel is excavated, it is convenient for the rapid advancement of the continuous mining and filling working face, and effectively improve the excavation efficiency of the branch tunnel and the production efficiency of continuous mining and filling. This embodiment provides a rapid support bracket and support method for continuous mining and filling, including multiple support monomers and spacing adjustment components. The multiple support monomers are used to be linearly arranged along the mining direction of the branch tunnel of the coal mine. The support monomers include a left column 1, a right column 2 and a top beam 3 that can be telescopically adjusted. The left column 1 and the right column 2 are respectively arranged at both ends of the top beam 3, and the left column 1 and the right column 2 are both vertically fixed to the top beam 3. It is preferred that the top beam 3, the left column 1 and the right column 2 are all rods with a rectangular or circular cross section. The spacing adjustment component is arranged between the multiple support monomers, and is used to adjust and fix the support spacing of the multiple support monomers to form an excavation support barrier. The specific cross section of the excavation support barrier is set in an n-shaped manner. At the same time, in order to ensure that the excavation support barrier formed during use is evenly stressed, multiple support units are required to be arranged at equal intervals.

[0023] See also Figures 2 to 4As shown, the spacing adjustment component includes a first adjustment unit, a second adjustment unit and a third adjustment unit, and the three have the same structure. The first adjustment unit is used for the mutual connection and spacing adjustment of multiple left columns 1, the second adjustment unit is used for the mutual connection and spacing adjustment of multiple right columns 2, and the third adjustment unit is used for the mutual connection and spacing adjustment of multiple top beams 3. The specific structure of the three adjustment units is pointed out by taking the structural composition of the first adjustment unit as an example. The first adjustment unit includes a plurality of first connecting rods 4 and second connecting rods 5 arranged in a one-to-one correspondence, and the corresponding first connecting rods 4 and second connecting rods 5 are cross-arranged, and both are hinged to a left column 1 at the intersection. The first connecting rod 4 and the second connecting rod 5 are equally divided about the intersection of the two. And the plurality of first connecting rods 4 or the plurality of second connecting rods 5 are arranged in a manner of being hinged end to end in sequence to form a cross-shear telescopic structure. The left columns 1 on both sides of the intersection of the first connecting rod 4 and the second connecting rod 5 are respectively connected to the corresponding first connecting rod 4 and the second connecting rod 5 through sliding modules.

[0024] Furthermore, in order to facilitate the overall height adjustment of the quick support bracket, the left column 1, the right column 2 and the top beam 3 all include a fixed rod, a movable rod and an electric hydraulic push rod, the movable rod is coaxial with the fixed rod and the two are plugged together, the fixed end of the electric hydraulic push rod is fixedly connected to the fixed rod, and the telescopic end of the electric hydraulic push rod is fixedly connected to the movable rod. During adjustment, the control device can be used to simultaneously control the length adjustment of multiple left columns 1 or right columns 2 or top beams 3, and the adjustment is convenient and quick.

[0025] See also Figure 2 and Figure 4As shown, the sliding module includes a sliding sleeve 6, which is sleeved on the left column 1, one end of the first connecting rod 4 or the second connecting rod 5 is hinged to the sliding sleeve 6, a slider is fixedly connected to the inner wall of the sliding sleeve 6, and a sliding groove 7 for cooperating with the slider is provided on the side wall of the left column 1. The connecting ends of two adjacent first connecting rods 4 or second connecting rods 5 are hinged to the sliding sleeve 6 on the same left column 1. A fixing structure is provided between the sliding sleeve 6 and the left column 1 to achieve the fixing and release of the sliding sleeve 6 and the left column 1. Preferably, in order to facilitate the adjustment and fixing of the support spacing of two adjacent bracket monomers, the fixing structure includes a bolt 8, which is inserted through the sliding sleeve 6 and the two are threadedly connected. When the bolt 8 is tightened, it is tightened and fixed with the left column 1 to ensure that the spacing between the adjacent left columns 1 is locked. When the bolt 8 is released, it is separated from the left column 1 to facilitate the adjustment of the spacing between the adjacent left columns 1. In order to ensure the stability of the subsequent connection and fixation, the connection between the bolt 8 and the sliding sleeve 6 is also equipped with a corresponding gasket, and the number of gaskets is generally one or two. And when in use, the cross connection mode of the first connecting rod 4 and the second connecting rod 5 is used to form a triangular structure to improve the overall stability of the support bracket. Specifically, when adjusting the support spacing between adjacent bracket monomers, it is necessary to simultaneously loosen the bolts 8 acting on the left column 1, the right column 2 and the top beam 3, so that the first connecting rod 4 and the second connecting rod 5 can move freely, and the corresponding two first connecting rods 4 and the second connecting rod 5 are rotated to a suitable angle with the intersection as the center, and then tighten the bolts 8 to keep the angle of the first connecting rod 4 and the second connecting rod 5 fixed, that is, to achieve the fixed support spacing of the two adjacent bracket monomers.

[0026] According to the above-designed rapid support bracket for continuous mining and filling, the support method thereof during the excavation and mining process comprises the following steps: Step 1: Dig the air inlet chute, return air chute and cut hole in the mining area according to the layout of the longwall mining working face, and divide the mining area into branch lanes. The mining direction of the branch lanes is required to be perpendicular to the direction of the working face or at an angle of 40°~60°. The mining length of the branch lanes is generally not more than 150m and the width is not less than 4m-6m.

[0027] Step 2: Use the first connecting rod 4, the second connecting rod 5 and the sliding module in the first adjustment unit, the second adjustment unit and the third adjustment unit to adjust the spacing between adjacent support units, and adjust the telescopic length of the left column 1, the right column 2 and the top beam 3, so that the width, height and support depth of each branch tunnel are compatible with the excavation support barrier formed by multiple support units, and in order to ensure the safety of the top support, a top plate is set between the top beam 3 and the top wall of the branch tunnel, and the support bracket is used to push the top beam 3 to abut against the top plate of the branch tunnel.

[0028] Step 3. During the excavation and mining process of the branch tunnel, after the branch tunnel has been excavated to a certain depth, and according to the geological conditions, the spacing between adjacent support units is adaptively adjusted so that the support brackets can be deployed to meet the support requirements, and the fixed structure is used to fix the spacing between the left column 1, the right column 2 and the top beam 3 of each support unit. The top beam 3 is abutted against the top plate of the branch tunnel to support the top plate of the branch tunnel, and as the branch tunnel advances, the support brackets are gradually moved forward with the top plate.

[0029] Step 4: After the excavation and mining of the branch tunnel is completed, the branch tunnel is filled. During the filling process, the support bracket is slowly withdrawn until the filling is completed.

[0030] The method for each support monomer to form an excavation support barrier is: Move the quick support support as a whole to the position of the branch tunnel to be supported, so that the lower end of each support monomer is placed stably on the ground and the lower ends of all support monomers are at the same horizontal height; through the telescopic adjustment of the left column 1 and the right column 2, the height of the top beam 3 is made the same as the top height of the branch tunnel; through the telescopic adjustment of the top beam 3, the left column 1 and the right column 2 on both sides are pulled to move along the width direction of the branch tunnel at the same time until the spacing between the left column 1 and the right column 2 on both sides is the same as the width of the branch tunnel; use the first adjustment unit, the second adjustment unit and the first connecting rod 4 and the second connecting rod 5 in the third adjustment unit to hinge and rotate to adjust the spacing between adjacent support monomers, so that the support length of the entire quick support support meets the support requirements of the mining depth.

[0031] Furthermore, the width of a general branch lane is determined according to the following formula: , In the formula, L is the width of the branch lane, in m; is the thickness of top beam 3, in m; is the allowable shear stress of the rock beam, in MPa; W It is the transverse uniformly distributed load of the rock beam, in MPa.

[0032] Furthermore, in order to ensure the stability and safety of the support, the spacing d between adjacent support monomers is generally determined according to the following formula: , In the formula, It is the pressure of the rock on the supporting frame per meter of the tunnel roof, in kN / m; is the failure load of the support bracket, in kN.

[0033] Furthermore, the pressure of the rock on the support per meter of the tunnel roof is , determined according to the following formula: , In the formula, is the bulk density of the roof rock, in kN / m 3 ; is the solidity coefficient of the roof rock; It is the half span of the tunnel, in m.

[0034] Furthermore, the failure load of the support bracket , determined according to the following formula: , Where: It is the compressive / tensile strength of the support material, in MPa; is the bending section modulus of the support material, in cm 3 ; l is the span of the support bracket, in m.

[0035] In order to achieve the ability of supporting pressure, the compressive / tensile strength of the support monomer material The value range is 275Mpa-345Mpa; the bending section modulus range of the bracket monomer material is 166cm 3 -332cm 3 .

[0036] In summary, this device can achieve rapid and timely support for the roof used in the tunnel mining process by using the excavation support barrier formed by multiple support units and spacing adjustment components in the process of mining and excavation of the branch tunnel, as the branch tunnel is excavated, and the adjustability of the spacing between two adjacent support units is used to provide different support strengths for the roof according to the complex geological environment, which is convenient for the rapid advancement of the continuous mining and filling working face, and effectively improves the excavation efficiency of the branch tunnel and the production efficiency of continuous mining and filling. Compared with the current method of reinforcing the roof by installing anchor rods, anchor cables and anchor nets on the roof, the use of this device is simpler, convenient and easy to use, and can effectively save production time, saving time and effort.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A rapid support bracket for continuous mining and filling, characterized in that: include: A plurality of support units are used to be linearly arranged along the mining direction of a branch tunnel in a coal mine, the support units comprising a left column (1), a right column (2) and a top beam (3) that can be telescopically adjusted, the left column (1) and the right column (2) being arranged at both ends of the top beam (3), and the left column (1) and the right column (2) being vertically fixed to the top beam (3); A spacing adjustment component, comprising a first adjustment unit, a second adjustment unit and a third adjustment unit, the three having the same structure, the first adjustment unit being used for interconnecting and spacing adjustment of a plurality of left upright posts (1), the second adjustment unit being used for interconnecting and spacing adjustment of a plurality of right upright posts (2), and the third adjustment unit being used for interconnecting and spacing adjustment of a plurality of top beams (3); The first adjustment unit comprises a plurality of first connecting rods (4) and second connecting rods (5) arranged in a one-to-one correspondence, and the plurality of first connecting rods (4) or second connecting rods (5) are hinged end to end in sequence, the corresponding first connecting rods (4) and second connecting rods (5) are arranged crosswise and are hinged to one of the left upright posts (1) at the intersection, and the left upright posts (1) located on both sides of the intersection of the first connecting rod (4) and the second connecting rod (5) are slidably connected to the first connecting rod (4) and the second connecting rod (5) via a sliding module; During the continuous mining and filling process, as the branch tunnel is excavated to a certain depth, the position of the support unit is adaptively adjusted, and the first adjustment unit, the second adjustment unit and the third adjustment unit are used to adjust the distance between adjacent support units to meet the support requirements.

2. A rapid support bracket for continuous mining and filling according to claim 1, characterized in that: The sliding module comprises a sliding sleeve (6), the sliding sleeve (6) being sleeved on the left column (1), one end of the first connecting rod (4) or the second connecting rod (5) being hinged to the sliding sleeve (6), a sliding block being fixedly connected to the inner wall of the sliding sleeve (6), and a sliding groove (7) for cooperating with the sliding block being provided on the side wall of the left column (1).

3. A rapid support bracket for continuous mining and filling according to claim 2, characterized in that: The connecting ends of two adjacent first connecting rods (4) or second connecting rods (5) are hingedly connected to a sliding sleeve (6) on the same left upright column (1).

4. A rapid support bracket for continuous mining and filling according to claim 2, characterized in that: A fixing structure is provided between the sliding sleeve (6) and the left upright column (1), the fixing structure comprising a bolt (8), the bolt (8) being inserted through the sliding sleeve (6) and the two being threadedly connected, the bolt (8) being used to achieve tight fixation and separation adjustment between the sliding sleeve (6) and the left upright column (1).

5. The rapid support bracket for continuous mining and filling according to claim 1 is characterized in that: The left column (1), the right column (2) and the top beam (3) all include a fixed rod, a movable rod and an electric hydraulic push rod. The movable rod is coaxial with the fixed rod and the two are plug-fitted. The fixed end of the electric hydraulic push rod is fixedly connected to the fixed rod, and the telescopic end of the electric hydraulic push rod is fixedly connected to the movable rod.

6. A method for supporting a rapid support bracket for continuous mining and filling according to any one of claims 1 to 5, characterized in that: The steps include: Step 1: Dig the air inlet chute, return air chute and cut hole according to the layout of the longwall mining working face, and divide the branch lanes; Step 2: Use the first connecting rod (4), the second connecting rod (5) and the sliding module in the first adjustment unit, the second adjustment unit and the third adjustment unit to adjust the spacing between adjacent support units, and adjust the telescopic length of the left column (1), the right column (2) and the top beam (3), so that the width and height of each branch tunnel are compatible with the excavation support barrier formed by the multiple support units, so that the top beam (3) is abutted against the top plate used to support the top wall of the branch tunnel; Step 3: During the excavation and mining process of the branch tunnel, after the branch tunnel has been excavated to a certain depth, and according to the geological conditions, the position of the support unit and the spacing between adjacent support units are adaptively adjusted to meet the support requirements, and as the branch tunnel advances, the support support gradually supports the top plate to move forward; Step 4: After the excavation and mining of the branch tunnel is completed, the branch tunnel is filled. During the filling process, the support bracket is slowly withdrawn until the filling is completed.

7. A method for supporting a rapid support bracket for continuous mining and filling according to claim 6, characterized in that: The method for forming the excavation support barrier is: Move the quick support bracket as a whole to the position of the branch tunnel to be supported, so that the lower end of each bracket monomer is placed stably on the ground and the lower ends of all bracket monomers are at the same horizontal height; By telescopically adjusting the left column (1) and the right column (2), the height of the top beam (3) is made the same as the top height of the branch tunnel; By adjusting the top beam (3) by telescopic adjustment, the left upright column (1) and the right upright column (2) on both sides are pulled to move along the width direction of the branch tunnel until the distance between the left upright column (1) and the right upright column (2) on both sides is the same as the width of the branch tunnel; By using the first adjustment unit, the second adjustment unit and the first connecting rod (4) and the second connecting rod (5) in the third adjustment unit to hinge and rotate together, the spacing between adjacent support monomers is adjusted so that the support length of the entire rapid support support meets the support requirements of the mining depth.

8. A method for supporting a rapid support bracket for continuous mining and filling according to claim 6, characterized in that: The width of the branch lane is determined according to the following formula: ， In the formula, L is the width of the branch lane, in m; is the roof thickness of the branch tunnel, in m; is the allowable shear stress of the rock beam, in MPa; W It is the transverse uniformly distributed load of the rock beam, in MPa.

9. A method for supporting a rapid support bracket for continuous mining and filling according to claim 6, characterized in that: The spacing between adjacent stent monomers is determined according to the following formula: ， in, , ， In the formula, is the spacing between adjacent bracket monomers, in m; It is the pressure of the rock on the supporting frame per meter of the tunnel roof, in kN / m. is the bulk density of the roof rock, in kN / m 3 , is the strength coefficient of the roof rock, is the half span of the roadway, in m; is the failure load of the support, in kN, It is the compressive / tensile strength of the support material, in MPa; is the bending section modulus of the support material, in cm 3 ; l is the span of the support bracket, in m.

10. A method for supporting a rapid support bracket for continuous mining and filling according to claim 7, characterized in that: The compressive or tensile strength of the material used for the bracket monomer The value range is 275Mpa-345Mpa; the value range of the bending section modulus of the support monomer material is 166cm 3 -332cm 3 .

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