CN113622982A - Supporting device for coal mine composite roof and using method thereof - Google Patents
Supporting device for coal mine composite roof and using method thereof Download PDFInfo
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- CN113622982A CN113622982A CN202111065689.2A CN202111065689A CN113622982A CN 113622982 A CN113622982 A CN 113622982A CN 202111065689 A CN202111065689 A CN 202111065689A CN 113622982 A CN113622982 A CN 113622982A
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 135
- 239000002131 composite material Substances 0.000 title claims abstract description 56
- 239000003245 coal Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 19
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 238000005553 drilling Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 description 7
- 230000005641 tunneling Effects 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/08—Advancing mechanisms
- E21D23/081—Advancing mechanisms forming parts of the roof supports
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a supporting device for a composite roof of a coal mine and a using method thereof, and discloses a supporting device for a composite roof, can reserve safe operation space for workers, utilizes a cross type movable support structure and a labor-saving structure to be matched with the support device for lifting the anchor net and the use method thereof, it is characterized by comprising a moving device and supporting devices, wherein the moving device and three supporting devices are arranged on the moving device, the three supporting devices comprise a first supporting frame, a second supporting frame and a third supporting frame, the three supporting devices are arranged on the moving device in a mutual arrangement and movable mode on two sides, to the tunnel of secondary supporting, can reserve safe operation space for the workman, the workman is better carries out the stock fixed anchor net in the pit of being convenient for, labour saving and time saving improves the efficiency of strutting of compound roof in the pit, also can reduce the accident because the roof rockfall causes simultaneously.
Description
Technical Field
The invention discloses a supporting device for a composite roof of a coal mine and a using method thereof, relates to a device for supporting the composite roof during coal mine tunneling and a using method thereof, and belongs to the technical field of coal mine equipment. In particular to a supporting device which can reserve a safe operation space for workers when a composite roof is supported, and utilizes a cross-type movable supporting structure to lift an anchor net by matching with a labor-saving structure and a using method thereof.
Background
The composite roof is also called a separation roof, and is a direct roof containing one or more layers of special combinations of soft and weak rock strata and hard rock strata, the composite roof has the characteristics that the lower part is soft and the upper part is hard, separation is easy to occur, extremely thin and weak smooth surfaces are frequently arranged between the soft and hard roof, the adhesive force is very small, the separation is easy to separate, the separation is easy to occur and roof fall occurs when the composite roof is influenced by factors such as mine pressure, geological structure, water spraying and the like, the roof is unstable, the safety problem is high, a tunneling device is required to be used for reinforcing and protecting, particularly in the process of coal mine tunneling, great acting force is generated on the composite roof and the surrounding rock strata, roof fall accidents occur when the composite roof is stressed, the safety of equipment and personnel below is threatened, and advanced support is required to ensure the stability of the mine roof and surrounding rocks. At present, a mode of matching anchor rods with anchor nets is usually adopted for supporting, the supporting mode has two modes of manual supporting and mechanical supporting, at present, a mode of manual supporting is generally adopted for underground roadways, particularly composite roof roadways for secondary maintenance construction, the supporting mode is low in cost, however, in the supporting process, personnel are required to lift the anchor nets to the roof of the roadway, then the anchor nets are fixed on the roof of the roadway by utilizing the anchor rods, in the process, the personnel are required to always lift the anchor nets until the anchor nets are completely fixed by the anchor rods, the physical consumption of the personnel is high, and the efficiency is also low.
The anchor rod is firstly drilled, then the anchor net is fixed in a supporting mode, the composite top plate is generally provided with a plurality of layers of soft and weak rock layers and hard rock layers, broken stones often fall off during operation below the top plate, and when the anchor rod is drilled, the front top plate can be used for detecting whether the falling rocks exist or not through knocking the top, but when the anchor rod is drilled, workers still can cause great potential safety hazards to mechanical equipment and personnel below due to the fact that the broken stones of the roadway top plate directly fall off. In addition, the number of the staff who get off the roadway is limited, the limited staff is divided into lifting, drilling and anchor rod fixing staff, the separate operation is carried out, the efficiency is low, and the roadway tunneling efficiency is greatly influenced.
To the higher downhole machine of some mechanical degrees is strutted, be applicable to great tunnel more, it is narrower to the tunnel, the narrow and small place in mechanical operation space, and use cost is higher, still adopt the mode of artifical supporting to carry out the roof operation now, to the place that the part needs secondary to strut, unsuitable machinery carries out the operation, and the construction environment has the rockfall more easily, current manual work does not have safe operation space, part hydraulic support, also be unsuitable for the tunnel use that this kind of secondary maintenance was strutted, and also be inconvenient to remove in the tunnel.
Notice No. CN205936636U discloses a thick coal seam is along empty tunnelling supporting system, roof supporting mechanism includes the roof reinforcing bar net, multirow roof member and multirow roof anchor rope spare of setting on the roof in turn, roof reinforcing bar net sets up between multirow roof member and roof, the device needs the manpower to lift reinforcing bar net and anchor rope spare to roof department and fixes, it is wasted time and energy, and every tunnelling a section distance need install again and strut the tunnel roof, work load is big, the efficiency of tunnelling is influenced.
Publication number CN201218105 discloses a mine roadway excavation supporting member, including the reinforcing bar net, top steel band and top anchor rod laid on the roadway roof, still include the group anchor rod that sets up in the tunnel both sides, still include reinforcing bar net and group steel band of addding in tunnel working face both sides, add at least one group anchor rope on the group steel band apart from certain distance, the device needs the manpower to lift and install and support at the supporting in-process, it is time-consuming and arduous, and need install again after tunneling a section distance and support, the work load is big, influence the efficiency of tunneling.
Disclosure of Invention
In order to improve the situation, the invention provides a supporting device for a composite roof of a coal mine and a using method thereof, and provides the supporting device and the using method thereof, wherein a safe operation space can be reserved for workers during the supporting of the composite roof, and the supporting device is used for lifting and supporting an anchor net by utilizing a cross type movable supporting structure and matching with a labor-saving structure. To the tunnel of secondary supporting, can reserve safe operation space for the workman, the workman is better carries out the stock fixed anchor net in the pit of being convenient for, labour saving and time saving improves the efficiency of strutting of compound roof in the pit, also can reduce the accident because the roof rockfall causes simultaneously.
The invention relates to a supporting device for a coal mine composite roof, which is realized by the following steps: the invention relates to a supporting device for a composite roof of a coal mine, which consists of a moving device and a supporting device, and consists of the moving device and three supporting devices, wherein the three supporting devices consist of a first supporting frame, a second supporting frame and a third supporting frame, and the three supporting devices are arranged on the moving device in a way that the two sides of the three supporting devices are alternately arranged and can be moved.
The moving device comprises a vertical column, a moving base, a moving wheel, a fixed plate, an arc-shaped supporting plate, a jack, a main-shaped track and an auxiliary-shaped track, wherein the moving base is arranged at one end of the vertical column, the moving wheel is arranged in the moving base and is hinged with the moving base, the main-shaped track and the auxiliary-shaped track are respectively contacted with the edge of the moving wheel, the main-shaped track and the auxiliary-shaped track are respectively arranged on the jack, the jack is arranged on the arc-shaped supporting plate which is arranged on the fixed plate, the supporting device comprises an arc-shaped connecting rod, a roller, a pulley, a supporting rod, an arc-shaped supporting frame, a traction rope and a supporting plate, the supporting plate is arranged at the other end of the vertical column, the arc-shaped supporting frame is arranged on the supporting plate, the arc-shaped connecting rod is connected with the arc-shaped supporting frame through a plurality of supporting rods, the arc-shaped connecting rod and the arc-shaped supporting frame are parallel to each other, and the arc-shaped connecting rod is arranged above the arc-shaped supporting frame, a plurality of gyro wheels have been put to equidistant on the arc connecting rod, and gyro wheel and arc connecting rod articulate mutually, the gyro wheel edge is higher than the arc connecting rod, and arc connecting rod tip articulates there is the pulley, and the haulage rope is arranged in on the pulley, haulage rope one end has been put the rubber pad, and the couple has been put to the other end.
Furthermore, the support rod is replaced by a telescopic rod with a support buffer function inside;
furthermore, the support rod is replaced by a pneumatic hydraulic rod connected with a roadway pneumatic system.
The invention also relates to a using method of the supporting device for the composite roof of the coal mine, which is characterized by comprising the following steps of:
1) detecting a roadway roof according to the requirement of composite roof support, and determining an unstable layer and a crack of the composite roof;
2) the main I-shaped rail and the auxiliary I-shaped rail are laid on a roadway bottom plate in parallel, then a first support frame, a second support frame and a third support frame are arranged on the main I-shaped rail and the auxiliary I-shaped rail in a crossed mode, and clamping blocks are placed on two sides of moving wheels of the first support frame, the second support frame and the third support frame for fixing;
3) hooking the anchor net by using a hook on the traction rope, pulling the traction rope by a person standing below the pulley to drive the anchor net to move upwards along the arc-shaped connecting rod, further lifting the anchor net to the top of the support frame, supporting the anchor net by using the first support frame, the second support frame and the third support frame at the moment, and then taking down the hook on the anchor net;
4) starting the jack, pushing the main I-shaped rail and the auxiliary I-shaped rail to ascend, driving the first support frame, the second support frame and the third support frame to ascend by the main I-shaped rail and the auxiliary I-shaped rail so as to drive the anchor net to ascend and the composite top plate to be in close contact with each other, forming a reserved construction environment in the roadway,
5) implanting self-drilling grouting anchor rods on a top plate of the roadway at intervals of 0.8-1.3 m;
6) pressing Marilya powder into and filling all gaps in a self-drilling grouting anchor rod under the grouting pressure of 20 Mpa;
7) observing the composite top plate, and taking the section of the type as a top plate management key area when the composite top plate and the coal body are soft and broken;
8) starting the jack, and descending and separating the anchor net of the first support frame, the second support frame and the third support frame;
9) repeating the steps 3 and 4, driving anchor rods at an interval of 1m, repeatedly laying anchor nets in the section, wherein the overlapping repetition length between the nets is larger than 180mm, laying new nets below the old nets, laying the new nets and the old nets in a staggered manner, and finishing the supporting work;
10) after the supporting work is finished, starting the jack, separating the supporting frame from the anchor net, repeating the step 3, and then pushing the first supporting frame, the second supporting frame and the third supporting frame to slide to a new supporting place on the main I-shaped rail and the auxiliary I-shaped rail;
11) and (4) repeating the steps 4-9 to form a new support for the top plate of the supporting roadway.
Has the beneficial effects.
The construction and support operation of the composite roof of the narrow roadway can be well assisted.
And secondly, the anchor net is fixed by the anchor rod, so that the underground workers can better fix the anchor net by the anchor rod, the time and the labor are saved, and the supporting efficiency of the underground composite roof is improved.
And thirdly, a safe operation space can be reserved for workers.
Fourthly, the structure is simple, and the cost is low.
Drawings
FIG. 1 is a schematic structural view of a supporting device for a composite roof of a coal mine according to the present invention;
FIG. 2 is a schematic structural view of a moving device of a supporting device for a composite roof of a coal mine;
FIG. 3 is a schematic structural view of a supporting device for a composite roof of a coal mine in accordance with an embodiment 2 of the present invention;
FIG. 4 is a schematic structural view of a supporting device for a composite roof of a coal mine in accordance with an embodiment 3 of the present invention;
fig. 5 is a schematic structural view of a supporting device for a composite roof of a coal mine in use.
In the attached drawings
Wherein the method comprises the following steps: arc connecting rod (1), gyro wheel (2), pulley (3), bracing piece (4), arc support frame (5), haulage rope (6), bracket plate (7), stand (8), remove base (9), remove wheel (10), fixed plate (11), arc backup pad (12), jack (13), major worker shape track (14), telescopic link (15), pneumatic hydraulic stem (16), support frame (17), No. two support frame (18), No. three support frame (19), subsidiary shape track (20).
The specific implementation mode is as follows:
example 1:
the invention relates to a supporting device for a coal mine composite roof and a using method thereof, which are realized as follows: the invention relates to a supporting device for a composite roof of a coal mine, which consists of a moving device and three supporting devices, wherein the three supporting devices consist of a first supporting frame (17), a second supporting frame (18) and a third supporting frame (19), and the three supporting devices are arranged on the moving device in a way that two sides of the three supporting devices are alternately arranged and can be moved;
the moving device consists of an upright post (8), a moving base (9), moving wheels (10), a fixing plate (11), an arc-shaped supporting plate (12), a jack (13), a main I-shaped rail (14) and an auxiliary I-shaped rail (20), wherein the moving base (9) is arranged at one end of the upright post (8), the moving wheels (10) are arranged in the moving base (9) and are hinged with the moving base (9), the main I-shaped rail (14) and the auxiliary I-shaped rail (20) are respectively contacted with the edges of the moving wheels (10), the main I-shaped rail (14) and the auxiliary I-shaped rail (20) are respectively arranged on the jack (13), the jack (13) is arranged on the arc-shaped supporting plate (12), and the arc-shaped supporting plate (12) is arranged on the fixing plate (11);
the supporting device consists of an arc-shaped connecting rod (1), rollers (2), pulleys (3), supporting rods (4), an arc-shaped supporting frame (5), a traction rope (6) and a supporting plate (7), wherein the supporting plate (7) is arranged at the other end of a stand column (8), the arc-shaped supporting frame (5) is arranged on the supporting plate (7), the arc-shaped connecting rod (1) is connected with the arc-shaped supporting frame (5) through a plurality of supporting rods (4), the arc-shaped connecting rod (1) and the arc-shaped supporting frame (5) are parallel to each other, the arc-shaped connecting rod (1) is positioned above the arc-shaped supporting frame (5), the arc-shaped connecting rod (1) is equidistantly provided with a plurality of rollers (2), the rollers (2) are hinged with the arc-shaped connecting rod (1), the edges of the rollers (2) are higher than the arc-shaped connecting rod (1), the pulleys (3) are hinged with the end parts of the arc-shaped connecting rod (1), the traction rope (6) is arranged on the pulleys (3), one end of the traction rope (6) is provided with a rubber pad, and the other end is provided with a hook.
Example 2:
the difference between the embodiment and the embodiment 1 is that the supporting rod (4) is replaced by a telescopic rod (15) with a supporting and buffering effect, when the supporting rod is used, the anchor net can be better supported according to the condition of the top plate, and when the anchor net is lifted to move in a cross mode, the forward movement of the anchor net cannot be influenced by a small amount of obstacles below the top plate.
Example 3:
the difference between the embodiment and the embodiment 1 is that the support rods (4) are replaced by pneumatic hydraulic rods (16) connected with a roadway pneumatic system, when the combined type tunnel roof supporting device is used, the pneumatic hydraulic rods (16) work independently, and the anchor nets are tightly attached to the uneven positions of the composite roof through pushing the arc-shaped connecting rods (1), so that the combined type tunnel roof supporting device can adapt to roadway roofs in different shapes.
The use method of the supporting device for the composite roof of the coal mine comprises the following steps:
1) detecting a roadway roof according to the requirement of composite roof support, and determining an unstable layer and a crack of the composite roof;
2) the method comprises the following steps that a main I-shaped rail (14) and an auxiliary I-shaped rail (20) are laid on a roadway bottom plate in parallel, a first support frame (17), a second support frame (18) and a third support frame (19) are arranged on the main I-shaped rail (14) and the auxiliary I-shaped rail (20) in a crossed mode, and clamping blocks are placed on two sides of a moving wheel (10) of the first support frame (17), the second support frame (18) and the third support frame (19) for fixing;
3) the anchor net is hooked by a hook on a traction rope (6), a person stands below a pulley (3) to pull the traction rope (6) to drive the anchor net to move upwards along an arc-shaped connecting rod (1), and then the anchor net is lifted to the top of a support frame, at the moment, a first support frame (17), a second support frame (18) and a third support frame (19) support the anchor net, and then the hook on the anchor net is taken down;
4) starting a jack (13), wherein the jack (13) pushes a main I-shaped rail (14) and an auxiliary I-shaped rail (20) to ascend, and the main I-shaped rail (14) and the auxiliary I-shaped rail (20) drive a first support frame (17), a second support frame (18) and a third support frame (19) to ascend, so that an anchor net is driven to ascend to be in close contact with a composite top plate, and a reserved construction environment is formed in a roadway;
5) implanting self-drilling grouting anchor rods on a top plate of the roadway at intervals of 0.8-1.3 m;
6) pressing Marilya powder into and filling all gaps in a self-drilling grouting anchor rod under the grouting pressure of 20 Mpa;
7) observing the composite top plate, and taking the section of the type as a top plate management key area when the composite top plate and the coal body are soft and broken;
8) starting the jack (13), and descending and separating the anchor net by the first support frame (17), the second support frame (18) and the third support frame (19);
9) repeating the steps 3 and 4, driving anchor rods at an interval of 1m, repeatedly laying anchor nets in the section, wherein the overlapping repetition length between the nets is larger than 180mm, laying new nets below the old nets, laying the new nets and the old nets in a staggered manner, and finishing the supporting work;
10) after the supporting work is finished, starting a jack (13), separating a supporting frame from an anchor net, repeating the step 3, and then pushing a first supporting frame (17), a second supporting frame (18) and a third supporting frame (19) to slide to a new supporting place on a main I-shaped track (14) and an auxiliary I-shaped track (20);
11) and (4) repeating the steps 4-9 to form a new support for the top plate of the supporting roadway.
The pulley (3) is matched with the roller (2) to assist personnel in lifting the anchor net, so that labor is saved;
the three supporting devices are matched to form a cross type movable supporting structure, and can form supporting support for the anchor net;
the supporting devices are matched with the design of the main I-shaped rail (14) and the auxiliary I-shaped rail (20), so that the supporting devices can move in a roadway conveniently, and the tunneling efficiency is improved;
the jack (13) is matched with the main I-shaped rail (14) and the auxiliary I-shaped rail (20), so that the height of the supporting device can be adjusted;
one end of the traction rope (6) is provided with a rubber pad, so that a person can conveniently hold the traction rope (6) to lift the anchor net;
the purpose of lifting the anchor net by utilizing the cross type movable supporting structure and matching with a labor-saving structure in supporting the composite roof is achieved.
When the support device is used, the support device is very suitable for roadways which are not suitable for entering and have higher mechanical degree, is more convenient to support for partial roadways which need secondary support, can reserve operation space for underground workers, and can save trouble and labor for supporting anchor nets.
The above embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that changes may be made without departing from the scope of the invention, and it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
It should be further noted that, while the above specific embodiments are described for simplicity and clarity, only the differences from other embodiments are described, but those skilled in the art should understand that the above specific embodiments are independent technical solutions.
Claims (10)
1. The utility model provides a compound roof in colliery is with strutting arrangement which characterized by: the three supporting devices are movably arranged on the moving device in a two-side interaction mode, a safe operation space can be reserved for workers when the composite top plate supports, and anchor net lifting is carried out by utilizing a cross type movable supporting structure formed by the three supporting devices and matching with a labor-saving structure.
2. The support device for a composite roof of a coal mine according to claim 1, wherein the moving device comprises a column, a moving base, a moving wheel, a fixed plate, an arc-shaped support plate, a jack, a main-shaped rail and an auxiliary-shaped rail, the moving base is disposed at one end of the column, the moving wheel is disposed in the moving base and is hinged to the moving base, the main-shaped rail and the auxiliary-shaped rail are respectively contacted with the edge of the moving wheel, the main-shaped rail and the auxiliary-shaped rail are respectively disposed on the jack, the jack is disposed on the arc-shaped support plate, the arc-shaped support plate is disposed on the fixed plate, the support device comprises arc-shaped connecting rods, rollers, pulleys, support rods, arc-shaped support frames, traction ropes and support plates, the support plates are disposed at the other end of the column, the arc-shaped support frames are disposed on the support plates, and the arc-shaped connecting rods are connected to the arc-shaped support frames through a plurality of support rods, the arc connecting rod is located arc support frame top, and the equidistance has put a plurality of gyro wheels on the arc connecting rod, and gyro wheel and arc connecting rod are articulated mutually, the gyro wheel edge is higher than the arc connecting rod, and arc connecting rod tip articulates there is the pulley, and the haulage rope is arranged in on the pulley.
3. The support device for the composite roof of the coal mine as claimed in claim 2, wherein the support rods are replaced by telescopic rods with a support buffer function inside.
4. A support device for a composite roof panel for a coal mine as claimed in claim 2 or 3, wherein the support rods are replaced with pneumatic hydraulic rods connected to a pneumatic system of a roadway.
5. The support device for the composite roof of the coal mine as claimed in claim 2, wherein one end of the traction rope is provided with a rubber pad, and the other end of the traction rope is provided with a hook.
6. The support device for the composite roof of the coal mine as claimed in claim 2, wherein the plurality of support devices can be conveniently moved in the roadway by matching with the design of the main I-shaped rail and the auxiliary I-shaped rail.
7. The support device for the composite roof of the coal mine as claimed in claim 2, wherein the jack is matched with the main I-shaped rail and the auxiliary I-shaped rail, so that the height of the support device can be adjusted.
8. The support device for the composite roof of the coal mine as recited in claim 2, wherein the arc-shaped connecting rods and the arc-shaped supporting frames are parallel to each other.
9. The support device for the composite roof of the coal mine, according to claim 1, wherein three support devices are matched to form a cross type movable support structure, and can form a lifting support for an anchor net.
10. A use method of a supporting device for a composite roof of a coal mine is characterized by comprising the following steps:
1) detecting a roadway roof according to the requirement of composite roof support, and determining an unstable layer and a crack of the composite roof;
2) the main I-shaped rail and the auxiliary I-shaped rail are laid on a roadway bottom plate in parallel, then a first support frame, a second support frame and a third support frame are arranged on the main I-shaped rail and the auxiliary I-shaped rail in a crossed mode, and clamping blocks are placed on two sides of moving wheels of the first support frame, the second support frame and the third support frame for fixing;
3) hooking the anchor net by using a hook on the traction rope, pulling the traction rope by a person standing below the pulley to drive the anchor net to move upwards along the arc-shaped connecting rod, further lifting the anchor net to the top of the support frame, supporting the anchor net by using the first support frame, the second support frame and the third support frame at the moment, and then taking down the hook on the anchor net;
4) starting a jack, pushing the main I-shaped rail and the auxiliary I-shaped rail to ascend, driving the first support frame, the second support frame and the third support frame to ascend by the main I-shaped rail and the auxiliary I-shaped rail, driving the anchor net to ascend and the composite top plate to be in close contact with each other, and forming a reserved construction environment in the roadway;
5) implanting self-drilling grouting anchor rods on a top plate of the roadway at intervals of 0.8-1.3 m;
6) pressing Marilya powder into and filling all gaps in a self-drilling grouting anchor rod under the grouting pressure of 20 Mpa;
7) observing the composite top plate, and taking the section of the type as a top plate management key area when the composite top plate and the coal body are soft and broken;
8) starting the jack, and descending and separating the anchor net of the first support frame, the second support frame and the third support frame;
9) repeating the steps 3 and 4, driving anchor rods at an interval of 1m, repeatedly laying anchor nets in the section, wherein the overlapping repetition length between the nets is larger than 180mm, laying new nets below the old nets, laying the new nets and the old nets in a staggered manner, and finishing the supporting work;
10) after the supporting work is finished, starting the jack, separating the supporting frame from the anchor net, repeating the step 3, and then pushing the first supporting frame, the second supporting frame and the third supporting frame to slide to a new supporting place on the main I-shaped rail and the auxiliary I-shaped rail;
11) and (4) repeating the steps 4-9 to form a new support for the top plate of the supporting roadway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111065689.2A CN113622982B (en) | 2021-09-13 | 2021-09-13 | Supporting device for coal mine composite roof and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111065689.2A CN113622982B (en) | 2021-09-13 | 2021-09-13 | Supporting device for coal mine composite roof and application method thereof |
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| Publication Number | Publication Date |
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| CN113622982A true CN113622982A (en) | 2021-11-09 |
| CN113622982B CN113622982B (en) | 2023-08-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN114856651A (en) * | 2022-05-06 | 2022-08-05 | 河南永锦能源有限公司云盖山煤矿一矿 | Auxiliary device for mounting underground coal mine protective net and construction method |
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| CN113622982B (en) | 2023-08-08 |
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