CN215332938U

CN215332938U - Intelligent combined type upper-lower lane advanced roadway protecting support for fully mechanized coal mining face

Info

Publication number: CN215332938U
Application number: CN202022575657.4U
Authority: CN
Inventors: 马军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-12-28
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses an intelligent combined type upper and lower roadway advanced roadway protection support for a fully mechanized mining face, wherein each single support is 5m in length, 4 groups of supports for an upper roadway and 6 groups of supports for a lower roadway are combined and fixed between a top beam and a bottom beam of the upper and lower roadway protection supports through a swing rod, an upright post and a box-type top cover plate; a spring flexible bottom box plate is designed between the bottom beams of the upper lane and fixed between the bottom beams of the lower lane through a bridge type lintel, the top beams of the upper and lower lane-protecting supports and the box type top cover plate are designed by arc-shaped contact surfaces, and every two upper and lower lane-protecting supports are connected into a group through a push-pull jack to realize the pulling and moving actions. The utility model overcomes the defects of single n-shaped steel beam support, meets the requirements of roadway support strength and support deformation, is convenient for field installation and removal, realizes artificial intelligence by an electro-hydraulic control system, solves the problem of advanced roadway protection of upper and lower roadways of a fully mechanized mining face, and has good economic and social benefits.

Description

Intelligent combined type upper-lower lane advanced roadway protecting support for fully mechanized coal mining face

Technical Field

The utility model belongs to the field of advanced roadway protection supports of fully mechanized coal mining faces, and particularly relates to an intelligent combined type upper and lower roadway advanced roadway protection support of a fully mechanized coal mining face, which is suitable for advanced roadway protection supports of the fully mechanized coal mining face under various section sizes, particularly under the conditions of large roadway top plate pressure and complex geological conditions.

Background

At present, most of coal mine fully mechanized mining working faces of China still adopt a single hydraulic prop and pi-shaped steel beam supporting mode to carry out advance roadway supporting, and the supporting mode has the following defects.

The single hydraulic prop is supported in a supporting mode of matching with an n-shaped steel beam, so that the supporting strength is low, the stability is poor, the labor intensity is high, the production efficiency is low, the working procedures are complicated, the process is laggard, the prop maintenance amount is large, and the mine pressure observation is complex; under the geological condition of a 'three-soft' coal seam, the requirement of initial supporting force is difficult to be met due to large drilling quantity of the support column, and particularly, top plate safety accidents are easy to happen during initial pressure and periodic pressure.

Therefore, the utility model is urgently needed to provide a more advanced roadway support for upper and lower roadways of a fully mechanized coal mining face, so that the problems are solved, the safety risk of coal mine production is reduced, and the economic benefit of a coal mine is improved.

Disclosure of Invention

The utility model aims to solve the problems of the supporting mode of the single hydraulic prop with the n-shaped steel beam, and provides an intelligent combined type upper and lower roadway advanced roadway protection support for the fully mechanized mining face, which has strong adaptability to geological conditions of two roadways of the fully mechanized mining face, fully shows the advantages of adaptability and operability of equipment, realizes that a single piece of the roadway protection support is light in weight, small in external dimension and convenient to enter a well and transport underground, can complete field installation and dismantling work without a special assembly room and large-scale hoisting equipment, ensures that the integral roadway protection support has strong stability in use, and realizes light, intelligent and combined design to improve the production efficiency and the advanced supporting safety of the fully mechanized mining face.

The technical scheme adopted by the utility model is as follows: the combined type upper-lower roadway advanced roadway support comprises a combined type upper roadway advanced roadway support and a combined type lower roadway advanced roadway support, wherein the combined type upper roadway advanced roadway support is provided with a first group of supports, a second group of supports, a third group of supports and a fourth group of supports from outside to inside in sequence, each support is 5m in length, and the total support length is 20m in length.

The support is characterized in that 1 top beam and 1 bottom beam on each side of the support single frame are fixed in a limiting mode through 2 groups of swing rods, the top beams and the bottom beams are connected to form a group through 3 evenly-arranged double telescopic vertical columns, a group is arranged on two sides of a roadway, the top beams between the two groups are fixed to the top beams on two sides through 4 box-type top cover plates through pin shafts, 1 wingspan guard plate is designed on each of two sides of each box-type top cover plate, the two groups of bottom beams are clamped on the bottom beams on two sides through 2 spring flexible bottom boxes, and then the bottom beams on two sides are fixed through bolts, so that the complete upper roadway protection support single frame is formed.

The bottom beams at two sides of the first group of brackets and the second group of brackets and the third group of brackets and the fourth group of brackets are connected through a cross-shaped head; the second group of supports are connected with bottom beams on two sides of the third group of supports through push-pull jacks with strokes of 1200 mm.

1 foldable deflection adjusting jack is respectively designed at the outer side of each bottom beam of the 2 first groups of brackets; the box-type top cover plate of the fourth group of brackets close to the working surface is designed into a telescopic forepoling bar with the stroke of 1200 mm.

The fully-mechanized mining face lower roadway advance roadway protection support is sequentially provided with a first group of supports, a second group of supports, a third group of supports, a fourth group of supports, a fifth group of supports and a sixth group of supports from outside to inside, each support single support is 5m in length, the total support length of 6 groups of supports is 30m, and the coal wall is advanced by 23m from outside.

The fixing mode between each side of the single support and the top beam is the same as that of the upper roadway advanced roadway support, the fifth group of supports and the sixth group of supports are limited and fixed by limiting sleeves, the two groups of bottom beams are fixed on the bottom beams on two sides by bolts through bridge type lintel connection, and a reversed loader running space is arranged below the bridge, so that a complete lower roadway advanced roadway support single support is formed.

The bottom beams at two sides of the first group of brackets and the second group of brackets, the third group of brackets and the fourth group of brackets, and the fifth group of brackets and the sixth group of brackets are connected through a cross-shaped head; the second group of supports are connected with the third group of supports, and the fourth group of supports are connected with bottom beams on two sides of the fifth group of supports through push-pull jacks with strokes of 1200 mm.

2 foldable side-pushing jacks are respectively designed at the bottom beam sides of the fifth group of brackets and the sixth group of brackets near the lower side; the middle upright columns on the side of the fifth group of brackets and the sixth group of brackets close to the working surface of the upper part are designed into sliding middle upright columns; when the operating personnel cross the reversed loader, a pedestrian bridge with a guardrail is designed and fixed on the bridge type lintel at the inner side of the fifth group of supports; when the front scraper conveyer and the front scraper conveyer pull water coal and stick coal powder, a removable machine head lifting device is designed.

Compared with the existing single hydraulic prop supporting mode of matching with an n-shaped steel beam, the utility model has the following advantages: the upper roadway advance roadway protection support fully utilizes the optimal effective space in the middle of the roadway as a pedestrian passage and a working face equipment maintenance access passage, does not occupy too many roadway sections, and reduces the ventilation resistance of the roadway.

The fourth group of supports in the upper roadway is designed by adopting a telescopic front canopy, so that every time when the working face is pushed and mined, 4 groups of supports in the upper roadway are uniformly pulled and moved once, and the problem of damage to the top plate caused by frequent pulling and moving and frequent lifting of the supports is solved.

The foldable offset adjusting jack designed for the first group of supports in the upper lane solves the offset phenomenon possibly occurring in the support pulling and moving process; the flexible bottom box board of spring is adopted to the fixed mode of floorbar, can effectively avoid leading to the fact the deformation destruction that stress concentration produced to the support when the bottom soy sauce or the tunnel bottom plate meet outstanding hard rock in advance support section tunnel.

The arc contact surface is designed between the top beam of the upper lane and the lower lane advanced lane protection support and the box-type top cover plate, the swing clearance is designed between the clamping groove on the box-type top cover plate and the top beam, when the tunnel top plate has a certain inclination angle or unevenness, the box-type top cover plate can be in smooth contact with the tunnel top plate, and the support is prevented from being deformed and damaged integrally due to the fact that the box-type top cover plate is in uneven contact with the tunnel top plate.

The lower roadway advance roadway protection support ensures that reasonable lap joint is realized under the condition that the coal cannot be reasonably connected due to the fact that the scraper conveyor head on the working face is strung upwards through the repeated action of the foldable side-pushing jack, and unreasonable working conditions of coal pulling back are prevented; the device is raised to the aircraft nose can realize that when the great fine coal of water coal and viscosity appears in the working face, increase aircraft nose coal breakage height, prevents to pull back the coal phenomenon.

The pedestrian bridge with the guardrail is designed at the bridge type lintel at the inner side of the fifth group of supports in the lower lane, so that the safety problem that the operation personnel can cross the reversed loader is solved.

Compared with the supporting mode of using a single hydraulic prop and an n-shaped steel beam, 8 workers for maintaining advanced roadways for two roadways can be reduced in each class, 16 workers can be reduced every day according to 'two-mining-one-standard' labor organization calculation, the labor cost can be saved by 5280 working hours and can be saved by 400 yuan/worker calculation and 211.2 yuan per year.

The support for the upper and lower advanced roadway protection of the fully mechanized mining face has the outstanding advantages of high roadway height, high support strength, large support area, small specific pressure to a bottom plate, self-moving function, intelligent operation, high safety, strong adaptability and the like, and well solves all the problems of the support process of the upper and lower advanced supports of the fully mechanized mining face by using single hydraulic supports and pi-shaped steel beams.

Drawings

Fig. 1 is a left side view of an upper roadway advance roadway protection support of a fully mechanized coal mining face according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

fig. 4 is a left side view of a fully mechanized mining face lower lane advanced roadway protection support provided by an embodiment of the present invention;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a front view of FIG. 4;

FIG. 7 is a view of a head raising apparatus provided in accordance with an embodiment of the present invention;

FIG. 8 is a diagram illustrating a remote centralized control of electro-hydraulic control operations provided by an embodiment of the present invention;

in the figure: 1-top beam 2-bottom beam 3-swing rod 4-upright post 5-box type top cover plate

6-spring flexible bottom box plate 7-foldable deflection adjusting jack 8-push-pull jack 9-connection cross 10-telescopic forepoling beam 11-forepoling beam pushing jack 12-wingspan guard plate 13-bridge type lintel 14-sliding type middle upright post 15-telescopic type limit sleeve 16-foldable side pushing jack 17-pedestrian bridge 18-handpiece lifting frame 19-slot type base 20-lifting jack.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below, it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 4, an embodiment of the present invention provides an intelligent combined type upper-lower lane advanced roadway protection support for a fully mechanized coal mining face, which includes an upper lane advanced roadway protection support (fig. 1) for the fully mechanized coal mining face and a lower lane advanced roadway protection support (fig. 4) for the fully mechanized coal mining face.

The fully mechanized mining face roadway entry protecting support is implemented as follows:

1. go up the lane and design 4 group's supports outward inwards and be first group, second group, third group, fourth group in proper order, every two back timber (1), two floorbar (2), adopt two sets of pendulum rods (3) to carry out spacing fixed between back timber (1) and the floorbar (2), realize through 3 two flexible stand (4) of evenly arranging that back timber (1) are connected with floorbar (2) and are formed a set ofly, the lane both sides respectively arrange a set ofly.

2. 4 box type top cover plates (5) are clamped on the top beams (1) on the two sides and fixed on the top beams (1) on the two sides by pin shafts, 1 wingspan protection plate (12) is respectively designed on the two sides of each box type top cover plate (5), two groups of bottom beams (2) are fixed on the bottom beams (2) by bolts matched with springs through 2 spring flexible bottom box plates (6), a foldable deflection adjusting jack (7) is respectively designed on the outer side of the bottom beam (2) of the first group of supports in the upper lane, and the side, close to the working face, of the fourth group of supports is designed into a telescopic front canopy (10) with the stroke of 1200 mm.

3. A complete entry protection support single frame is formed by combining and fixing a top beam (1), a bottom beam (2), a swing rod (3), an upright post (4), a box-type top cover plate (5), a spring flexible bottom box plate (6) and a wingspan protection plate (12), the frames are connected with one another through a cross-shaped connecting head (9), every two frames are connected with a push-pull jack (8) with a stroke of 1200mm, and 4 entry protection support groups with the length of 20m are combined (figure 1).

The fully mechanized coal mining face lower lane roadway protection support is implemented as follows:

1. the lower lane is provided with 6 groups of supports which are a first group of supports, a second group of supports, a third group of supports, a fourth group of supports, a fifth group of supports and a sixth group of supports from outside to inside in sequence, each support is 5m in length, the total supporting length is 30m, and the supporting length of the supporting section is 23m in advance from the coal wall to the outside.

2. The two bottom beams (2) are connected by a bridge type lintel (13), a space formed below the bridge type lintel (13) is a transfer conveyor running space, the fifth and sixth groups of brackets are connected by a telescopic limiting sleeve (15), and an operator designs a pedestrian bridge (17) with a guardrail when crossing the transfer conveyor and fixes the pedestrian bridge (17) on the bridge type lintel (13) at the inner side of the fifth bracket; a head lifting device (figure 7) of the removable face scraper conveyor.

3. The middle upright columns of the roadway protection support corresponding to the front and rear scraper conveyor heads are designed into middle upright columns (14) with cylinders capable of being pulled up and sliding forwards and backwards, the cylinders of the obstructed sliding middle upright columns (14) are pulled up during the pushing of the front and rear scraper conveyor heads, and the supporting positions are adjusted and then lifted up for the second time after the standby heads are pushed in place.

4. Fifthly, 4 foldable side-pushing jacks (16) are uniformly designed at the positions of the lower side bottom beams (2) of the six two lane-protecting supports, when the phenomenon that coal is pulled back in a string mode occurs to the machine head of the working face scraper conveyor, two lugs designed on the cylinder body of the 4 foldable side-pushing jacks (16) and two lugs designed at corresponding positions on the bottom beams (2) are connected and fixed through a pin shaft, so that the 4 foldable side-pushing jacks (16) form fulcrums on the bottom beams (2), movable columns of the 4 foldable side-pushing jacks (16) extend out and penetrate through transverse holes designed on the bottom beams, and the shifting machine is shifted towards the direction of the machine head of the working face scraper conveyor.

5. One of the pin shafts is inserted into a vertical design hole on the bottom beam (2) to be connected with holes of the movable column heads of the 4 foldable side-pushing jacks (16) by pulling out the pin shafts on the cylinder bodies of the 4 foldable side-pushing jacks (16), and then the descending frame takes the lower wall of the roadway as a fulcrum to realize the pushing action of the two roadway-protecting supports close to the working face to the upper wall.

6. And the 4 th and 5 th actions can realize multiple upward movement actions of the tail part of the reversed loader and the lane protecting support.

7. The fixing modes of the fully mechanized mining face lower roadway advance roadway protection support top beam (1), the box type top cover plate (5) and the wingspan guard plate (12) are the same as the embodiment of the upper roadway advance roadway protection support.

The support method of the fully mechanized coal mining face upper roadway advance roadway protection support comprises the following steps:

the first step is as follows: when the coal cutter is fed downwards after the coal cutter is moved upwards to cut coal, the front scraper conveyor pushes the tail, and the working face chaser moves to the tail frame, the telescopic front canopy (10) of the fourth group of supports close to the working face side retracts by a coal cutting step distance of 600mm, then the coal cutter starts to cut coal downwards after cutting triangular coal upwards, the telescopic front canopy (10) retracts by a coal cutting step distance of 600mm after the front scraper conveyor pushes the tail and the working face tail moves, and 1200mm is retracted for two times;

the second step is that: an upper roadway advance roadway protection support starts remote frame moving operation (figure 8) through an intelligent electric liquid monitoring operation platform control system, a first group of supports and a second group of supports firstly withdraw all wingspan protection plates (12) on two sides, then the two supports simultaneously perform frame descending operation, the frame descending operation is stopped after the two supports are separated from a top plate for a certain distance, a push-pull jack (8) is started to operate to push the first group of supports and the second group of supports forwards to finish a pushing step of 1200mm stroke, if the phenomenon that the two supports deviate from the center of a roadway is found, a foldable deviation adjusting jack (7) is utilized to adjust the pushing center of the supports by taking one side of the roadway as a fulcrum, then the supports are pushed in place to be lifted to reach the requirement of initial supporting force, and all wingfold display protection plates (12) on two sides are stretched out;

the third step: and (3) all the wingspan guard plates (12) on the two sides of the third group of supports and the fourth group of supports are withdrawn, then the support lowering operation is carried out, the support lowering operation is stopped after the two supports are separated from the top plate for a certain distance, the push-pull jack (8) is operated to pull forwards, the pulling step distance of a stroke of 1200mm is completed, then the two supports are lifted simultaneously to reach the initial supporting force, the telescopic front cantilever (12) of the fourth group of supports is extended out by the stroke of 1200mm, all the wingspan guard plates (12) on the two sides are unfolded, and the whole entry-entering advanced lane-protecting support completes the whole operation process.

The support method of the fully mechanized coal mining face lower roadway advance roadway protection support comprises the following steps:

the first step is as follows: when the downward coal cutting of the coal mining machine is completely cut, the upward cutting of the coal mining machine is carried out, firstly, a cylinder body of a sliding type middle upright post (14) on the upper side of a fifth group of brackets is pulled up, after a front part scraper conveyor head is pushed to the right position, the sliding type middle upright post (14) is slid backwards to the right position to be lifted, a working face machine head bracket is pulled, a cylinder body of a sliding type middle upright post (14) on the upper side of a sixth group of brackets is pulled up, after the head of a rear part scraper conveyor is pulled to the right position, the sliding type middle upright post (14) is slid backwards to the right position to be lifted, the downward cutting of triangular coal by the coal mining machine is carried out, the actions are repeated, and then, the upward normal coal cutting of the coal mining machine can be started when the bracket at the working face machine head of the working face of the coal mining machine is pulled and moved twice at the position of the head of the machine;

the second step is that: starting to pull and move the transfer conveyor in a lower lane before the coal mining machine starts to ascend and cut coal, wherein the pulling and moving step distance is 1200 mm;

the third step: the lower lane advanced roadway protection support starts remote rack moving operation through an intelligent electric liquid monitoring operation platform control system (figure 8), firstly, a first group of supports and a second group of supports withdraw all wingspan protective plates (12) on two sides, the two supports simultaneously perform rack lowering operation, the rack lowering operation is stopped after the two supports are separated from a top plate for a certain distance, push-pull jacks (8) on bottom beams (2) on two sides of the second group of supports and the third group of supports start to push forward to move, the pushing step distance is 1200mm, the first group of supports and the second group of supports reach the requirement of initial supporting force after being pushed in place and lifted, then all the wingspan protective plates (12) on two sides are unfolded, the third group of supports, the fourth group of supports, the fifth group of supports and the sixth group of supports are sequentially pushed in place to be lifted to reach the requirement of initial supporting force, and the pulling movement of the full lower lane advanced roadway protection support is completed;

the fourth step: when the phenomenon of stringing and pulling back coal occurs on the working face scraper conveyor head, the two lugs designed on the cylinder body of the 4 foldable side-pushing jacks (16) and the two lugs designed at the corresponding positions on the bottom beam are connected and fixed by the pin shaft, so that the 4 foldable side-pushing jacks (16) form fulcrums on the bottom beam (2), and the live column of the 4 foldable side-pushing jacks (16) extends out and passes through the transverse hole designed on the bottom beam (2) to push the reversed loader towards the working face scraper conveyor head;

the fifth step: by pulling out two pin shafts on a cylinder body of 4 foldable side-pushing jacks (16), inserting one pin shaft into a vertically designed hole on a bottom beam (2) to be connected with a hole of a plunger column head of the 4 foldable side-pushing jacks (16), then withdrawing all wingspan guard plates (12) of the upper sides of the fifth group of supports and the sixth group of supports, starting to descend the frame by taking the lower side of the roadway as a fulcrum, and realizing the pushing action of the upper side of the fifth group of supports and the sixth group of supports through the 4 foldable side-pushing jacks (16);

and a sixth step: when water coal and the powdered coal with high viscosity appear on the working face, the working face scraper conveyor head lifting device (shown in figure 7) is installed at the head position, the head is lifted by the operation lifting jack (20), the square timber is used for cushioning the head, then the lifting jack (20) is lowered, the head is moved out to lift the device, and the whole lower lane advanced lane protecting support completes the whole operation process.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An intelligent combined type upper and lower roadway advance roadway protecting support for a fully mechanized coal mining face is characterized by comprising an upper roadway protecting support group and a lower roadway protecting support group,

the structure of the support group for protecting the roadway at the upper roadway is as follows: each single frame is 5m in length and is 4 frames in total, the support length is 20m, each frame is provided with two top beams (1) and two bottom beams (2), the top beams (1) and the bottom beams (2) are limited and fixed by adopting two groups of swing rods (3), the top beams (1) and the bottom beams (2) are connected into a group by 3 evenly-arranged double telescopic upright posts (4), two sides of a roadway are respectively provided with a group, 4 box-type top cover plates (5) are clamped on the top beams (1) at two sides between the two groups, the two groups are fixed on the top beams (1) at two sides by pin shafts, both sides of each box-type top cover plate (5) are respectively provided with a wingspan guard plate (12), the two groups of bottom beams (2) are fixed on the bottom beams (2) by 2 spring flexible bottom box plates (6), the bottom beams (2) are connected by connecting cross heads (9), push-pull jacks (8) with 1 stroke of 1200mm are respectively designed at the outer side positions of the bottom beams (2) between every two frames to form an upper supporting roadway with the length of 20m of the 4 advancing supporting frame, the outer side of a bottom beam (2) of a first group of advanced roadway protection supports is respectively provided with 1 foldable deflection adjusting jack (7), a box type top cover plate (5) of the upper roadway fourth group of supports close to a working surface side is designed into a telescopic type front canopy with the stroke of 1200mm, the contact surface between a top beam (1) and the box type top cover plate (5) is designed into an arc shape,

the structure of the lower lane protecting support group is as follows: each single frame is 5m in length, 6 frames are designed in total, the total supporting length is 30m, the supporting length of a supporting section from a coal wall to an outer advance supporting section is 23m, two bottom beams (2) are connected through a bridge type lintel (13), a space formed under the bridge type lintel (13) is a transfer conveyor running space, top beams (1) and the bottom beams (2) of a fifth group of frames and a sixth group of frames are connected through telescopic limiting sleeves (15), a pedestrian bridge (17) with guardrails is designed above the transfer conveyor and fixed on the bridge type lintel (13) at the inner side of the fifth group of frames, a machine head lifting device of the removable working face scraper conveyor, a middle upright post of a roadway protection frame opposite to machine heads of the front scraper conveyor and the rear scraper conveyor is designed into a cylinder body which can be pulled up and a front-rear slidable middle upright post (14), and 4 foldable side pushing jacks (16) are designed at the positions of the bottom beams at the lower sides of the fifth group of the sixth group of frames, two lugs designed on a cylinder body of 4 foldable side-pushing jacks (16) and two lugs designed at corresponding positions on a bottom beam (2) are connected and fixed by pin shafts, so that the 4 foldable side-pushing jacks (16) form fulcrums on the bottom beam (2), through the fact that the movable columns of the 4 foldable side-pushing jacks (16) extend out and pass through transverse holes designed on the bottom beam, the reversed loader is pushed towards the head direction of the working face scraper conveyor, pin shafts on cylinder bodies of the 4 foldable side-pushing jacks (16) are pulled out, one of the pin shafts is inserted into a vertical design hole on the bottom beam (2) to be connected with holes of movable column heads of the 4 foldable side-pushing jacks (16), then, a descending frame takes the lower wall of a roadway as the fulcrum to realize the pushing actions of the upper walls of a fifth protecting roadway support and a sixth roadway support, and a top beam (1) of the lower roadway protecting support of the comprehensive mining working face, The fixing modes of the box-type top cover plate (5) and the wingspan guard plate (12) are the same as the embodiment of the upper roadway advanced roadway protection bracket.

2. The combined type advanced roadway protection support for upper and lower roadways for the fully mechanized coal mining face of claim 1, wherein each top beam and bottom beam of the combined type advanced roadway protection support set are fixed by two sets of swing rods and 3 vertical columns to form a set, and two sets are distributed on two sides of a roadway.

3. The combined type upper and lower roadway advanced roadway support for the fully mechanized coal mining face of claim 1, wherein two bottom beams of the upper roadway advanced roadway support set are combined and fixed through 2 flexible bottom box plates.

4. The combined type upper and lower roadway advance roadway support frame for the fully mechanized coal mining face of claim 1, wherein the first group of support frame is provided with foldable offset adjusting jacks at the outer sides of bottom beams.

5. The combined type advanced roadway protection support for upper and lower roadways for the fully mechanized mining face of claim 1, wherein a telescopic front canopy with a stroke of 1200m is designed on a top beam of a fourth group of supports on the side close to the working face.

6. The combined type advanced roadway support for upper and lower roadways of a fully mechanized mining face of claim 1, wherein the bottom beams of the combined type advanced roadway support for upper and lower roadways are fixed through bridge type lintels, and a transfer conveyor running space is arranged below the bridge.

7. The combined advanced roadway protection support for upper and lower roadways for fully mechanized mining face of claim 1, wherein the top beam and the bottom beam of the roadway protection support set of the lower roadway protection support set, the fifth and sixth support sets are fixed by a telescopic limiting sleeve.

8. The combined advanced upper and lower roadway support according to claim 1, wherein 4 foldable pushing jacks for pushing the reversed loader and the roadway support upwards are arranged on the bottom beams of the lower roadway support group, the fifth group and the sixth group of supports.

9. The combined advanced roadway support for upper and lower roadways of a fully mechanized mining face of claim 1, wherein the upper middle vertical column of the support of the fifth group is designed as a sliding middle vertical column.

10. The combined type upper and lower roadway advanced roadway support of claim 1, wherein the upper middle vertical columns of the lower roadway advanced roadway support set and the sixth support set are designed as sliding middle vertical columns.

11. The combined advanced roadway support for upper and lower roadways of a fully mechanized mining face of claim 1, wherein the front and rear scraper conveyor heads of the advanced roadway support set for lower roadways are designed with removable lifting devices.

12. The combined type upper and lower roadway advanced roadway support of claim 1, wherein the top beam of the upper roadway advanced roadway support set and the top beam of the lower roadway advanced roadway support set are designed to be arc-shaped contact surfaces and connected with the box-type roof plate.