CN113622982B - Supporting device for coal mine composite roof and application method thereof - Google Patents
Supporting device for coal mine composite roof and application method thereof Download PDFInfo
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- CN113622982B CN113622982B CN202111065689.2A CN202111065689A CN113622982B CN 113622982 B CN113622982 B CN 113622982B CN 202111065689 A CN202111065689 A CN 202111065689A CN 113622982 B CN113622982 B CN 113622982B
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- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 239000003245 coal Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005553 drilling Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000005641 tunneling Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010009 beating Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement 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
Classifications
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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
-
- 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
-
- 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
Landscapes
- 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, which can reserve a safe operation space for workers when the composite roof is supported, utilize a cross type movable supporting structure and cooperate with a labor-saving structure to lift and lift an anchor net.
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 tunneling of the coal mine 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 is matched with a labor-saving structure to lift an anchor net by utilizing a cross type movable supporting structure and a using method thereof.
Background
The composite roof is also called as a delamination roof, is a direct roof containing one or more layers of special combination of a weaker rock stratum and a hard rock stratum, has the characteristics of being soft at the bottom and hard at the top, being easy to separate, having extremely weak smooth surfaces between the soft and hard roof, being very easy to separate due to small binding force, being more easy to separate and roof falling when being influenced by factors such as mine pressure, geological structure, water spraying and the like, being unstable, and having relatively large safety problems, so that a supporting device is required to carry out reinforcement and protection, especially in the coal mine tunneling process, tunneling opportunities generate great acting force on the composite roof and surrounding rock stratum, roof falling accidents are more easy to occur due to the stress of the composite roof, and safety threat is caused to equipment and personnel below, so that advanced support is required to ensure the stability of the mine roof and surrounding rock. At present, an anchor rod is usually adopted to support in a mode of matching with an anchor net, the support mode comprises a manual support mode and a mechanical support mode, at present, underground roadways, particularly composite roof roadways for secondary maintenance construction, are generally adopted, the cost of the support mode is lower, but in the support process, personnel are required to lift the anchor net to the position of a roadway roof, then the anchor net is fixed on the roadway roof by using the anchor rod, in the process, the personnel are required to lift the anchor net until the anchor rod is completely fixed, the physical power consumption of the personnel is higher, and the efficiency is lower.
And adopt this kind of anchor rod earlier, then with the fixed mode of support of anchor net, because compound roof is the weak stratum of multilayer and hard stratum generally, operation below the roof often has the rubble to fall, when beating the stock, although can ask the top through beating the group, detect whether the place ahead roof has the stone that falls, but the workman still can cause very big potential safety hazard to mechanical equipment and personnel below because the direct dropping of tunnel roof rubble when beating the stock. In addition, the number of people in the lower tunnel is limited, the limited people are divided into lifting, drilling and anchor rod fixing people, and the separate operation is low in efficiency, so that the tunneling efficiency of the tunnel is greatly affected.
The underground mechanical support with higher mechanical degree is mostly suitable for larger roadways, is narrower for the roadway, has a narrow mechanical operation space, has higher use cost, is used for roof operation in a manual support mode at present, is not suitable for mechanical development operation in a place where secondary support is needed for part of the underground mechanical support, is easier to fall stones in construction environment, has no safe operation space in the existing manual operation, is not suitable for the roadway of the secondary maintenance support, and is inconvenient to move in the roadway.
The utility model discloses a thick coal seam is along empty tunnelling support system, roof supporting mechanism includes roof reinforcing bar net, multi-row roof anchor member and multi-row roof anchor cable spare of setting on the roof in turn, and roof reinforcing bar net sets up between multi-row roof anchor member and roof, and the device needs the manpower to lift reinforcing bar net and anchor cable spare to roof department and fixes, wastes time and energy, and every tunnelling a section distance need install again and support the tunnel roof, and the work load is big, influences tunnelling efficiency.
Publication number CN201218105 discloses a mine tunnel tunnelling support component, including laying reinforcing bar net, top steel band and the top stock on the tunnel roof, still contain the group stock that sets up in the tunnel both sides, still contain and add reinforcing bar net and group steel band in the tunnel working face both sides, add at least one group anchor rope on the group steel band at a certain distance, the device needs to support at the support in-process needs the manpower to lift and installs the support, waste time and energy, and need install the support again after tunnelling a section distance, the work load is big, influence tunnelling efficiency.
Disclosure of Invention
In order to improve the situation, the invention provides the supporting device for the composite roof of the coal mine and the using method thereof, which can reserve a safe operation space for workers during supporting the composite roof, and utilize the cross type movable supporting structure to lift and lift the anchor net by matching with the labor-saving structure and the using method thereof. For the tunnel of secondary support, can reserve safe operation space for the workman, the better anchor net that carries out stock fixing of underground workman of being convenient for, labour saving and time saving improves the support efficiency of the compound roof in the pit, also can reduce the accident that causes because the roof falls the stone 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 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 an interactive way at two sides.
The mobile device comprises stand, mobile base, mobile wheel, fixed plate, arc backup pad, jack, main worker shape track and assisting worker shape track, the mobile base has been put to stand one end, mobile wheel arranges in mobile base, and articulated mutually with mobile base, main worker shape track and assisting worker shape track respectively with mobile wheel edge contact, main worker shape track arranges the jack in respectively with assisting worker shape track, the jack is arranged in on the arc backup pad, the fixed plate is arranged in to the arc backup pad, strutting arrangement comprises the arc connecting rod, the gyro wheel, the pulley, the bracing piece, the arc support frame, haulage rope and support plate, the support plate is arranged in on the stand other end, the arc support frame is arranged in on the support plate, the arc connecting rod is connected through a plurality of bracing pieces and arc support frame, arc connecting rod and arc support frame are parallel to each other, arc connecting rod is located arc support frame top, a plurality of gyro wheels have been put to the equidistance 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, the arc connecting rod tip articulates has the pulley, the haulage rope is arranged on the pulley one end has been put the rubber pad.
Further, the support rod is replaced by a telescopic rod with a supporting and buffering function;
further, the supporting rod is replaced by a pneumatic hydraulic rod connected with the roadway pneumatic system.
The invention also relates to a using method of the supporting device for the coal mine composite roof, which is characterized by comprising the following steps of:
1) Detecting a roadway roof according to the requirements of composite roof support, and determining an unstable layer and a crack of the composite roof;
2) The method comprises the steps of paving a main I-shaped track and an auxiliary I-shaped track on a roadway bottom plate in parallel, arranging a first support frame, a second support frame and a third support frame on the main I-shaped track and the auxiliary I-shaped track in a crossing manner, and placing clamping blocks on two sides of moving wheels of the first support frame, the second support frame and the third support frame for fixing;
3) The anchor net is hooked by a hook on the traction rope, a person stands below the pulley to pull the traction rope, drives the anchor net to move upwards along the arc-shaped connecting rod, further lifts the anchor net to the top of the support frame, at the moment, the first support frame, the second support frame and the third support frame support the anchor net, and then the hook on the anchor net is taken down;
4) Starting the jack, the jack pushes the main I-shaped track and the auxiliary I-shaped track to ascend, the main I-shaped track and the auxiliary I-shaped track drive the first support frame, the second support frame and the third support frame to ascend, thereby driving the anchor net to ascend and closely contact with the composite top plate to form a reserved construction environment in the roadway,
5) Implanting self-drilling grouting anchor rods into the tunnel roof according to the interval row spacing of 0.8-1.3 m;
6) Pressing Marie powder into the self-drilling grouting anchor rod with grouting pressure of 20Mpa to fill all gaps;
7) Observing a composite roof, and taking the section of the type as a roof management key area when the composite roof and a coal body are crushed loosely;
8) Starting the jack, and descending the first support frame, the second support frame and the third support frame to separate the anchor net;
9) Repeating the steps 3 and 4, driving anchor rods at 1m intervals, repeatedly paving anchor nets in the region, wherein the overlap joint repetition length between the nets is larger than 180mm, paving a new net below an old net, paving the new net and the old net in a staggered manner, and finishing supporting work;
10 After the supporting work is completed, starting the jack, separating the supporting frame from the anchor net, repeating the step 3, and pushing the first supporting frame, the second supporting frame and the third supporting frame to slide on the main I-shaped track and the auxiliary I-shaped track to a new supporting place;
11 Repeating the steps 4-9 to form a new support for the top plate of the support roadway.
Has the beneficial effects of.
1. The composite roof construction supporting operation of the narrow roadway can be well assisted.
2. The underground workers can conveniently fix the anchor net by the anchor rod, time and labor are saved, and the supporting efficiency of the underground composite top plate is improved.
3. Can reserve safe operation space for workers.
4. Simple structure and low cost.
Drawings
FIG. 1 is a schematic structural view of a supporting device for a composite roof of a coal mine;
FIG. 2 is a schematic structural view of a mobile device of a supporting device for a composite roof of a coal mine;
FIG. 3 is a schematic view showing the structure of an example 2 of a supporting device for a composite roof of a coal mine according to the present invention;
FIG. 4 is a schematic structural view of an example 3 of a supporting device for a composite roof of a coal mine according to 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 accompanying 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), fulcrum plate (7), stand (8), removal base (9), removal wheel (10), fixed plate (11), arc backup pad (12), jack (13), main worker shape track (14), telescopic link (15), pneumatic hydraulic stem (16), a strut (17), a strut (18) No. two, a strut (19) No. three, assist worker shape track (20).
The specific embodiment 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 by the following steps: the invention relates to a supporting device for a composite roof of a coal mine, which consists of a mobile 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 mobile device in an interactive way at two sides;
the movable device comprises a stand column (8), a movable base (9), a movable wheel (10), a fixed 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 movable base (9) is arranged at one end of the stand column (8), the movable wheel (10) is arranged in the movable base (9) and hinged with the movable base (9), the main I-shaped rail (14) and the auxiliary I-shaped rail (20) are respectively contacted with the edge of the movable wheel (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 fixed plate (11);
the supporting device comprises an arc connecting rod (1), rollers (2), pulleys (3), supporting rods (4), arc supporting frames (5), traction ropes (6) and supporting plates (7), wherein the supporting plates (7) are arranged at the other ends of the upright posts (8), the arc supporting frames (5) are arranged on the supporting plates (7), the arc connecting rod (1) is connected with the arc supporting frames (5) through a plurality of supporting rods (4), the arc connecting rod (1) and the arc supporting frames (5) are parallel to each other, the arc connecting rod (1) is located above the arc supporting frames (5), a plurality of rollers (2) are arranged on the arc connecting rod (1) at equal intervals, the rollers (2) are hinged to the arc connecting rod (1), the edges of the rollers (2) are higher than the arc connecting rods (1), the end portions of the arc connecting rods (1) are hinged to the pulleys (3), the traction ropes (6) are arranged on the pulleys (3), and rubber pads are arranged at one ends of the traction ropes (6), and hooks are arranged at the other ends of the traction ropes.
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 function, and when the telescopic rod is used, the anchor net can be supported according to the condition of the top plate better, and when the anchor net is lifted to carry out cross movement, the forward movement of the anchor net cannot be influenced due to a small number of barriers below the top plate.
Example 3:
the difference between the embodiment and the embodiment 1 is that the supporting rod (4) is replaced by a pneumatic hydraulic rod (16) connected with a roadway pneumatic system, and when the roadway roof supporting device is used, the pneumatic hydraulic rods (16) independently work, and the anchor net is tightly attached to the uneven part of the composite roof by pushing the arc-shaped connecting rod (1), so that the roadway roof supporting device can adapt to roadway roofs of different shapes.
The application method of the supporting device for the coal mine composite roof comprises the following steps:
1) Detecting a roadway roof according to the requirements of composite roof support, and determining an unstable layer and a crack of the composite roof;
2) The method comprises the steps of (1) paving a main I-shaped track (14) and an auxiliary I-shaped track (20) on a roadway bottom plate in parallel, then arranging a first support frame (17), a second support frame (18) and a third support frame (19) on the main I-shaped track (14) and the auxiliary I-shaped track (20) in a crossing manner, and placing clamping blocks 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 the traction rope (6), a person stands under the pulley (3) to pull the traction rope (6) to drive the anchor net to move upwards along the arc-shaped connecting rod (1), and then the anchor net is lifted to the top of the support frame, at the moment, the first support frame (17), the second support frame (18) and the 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 track (14) and an auxiliary I-shaped track (20) to ascend, and the main I-shaped track (14) and the auxiliary I-shaped track (20) drive a first support frame (17), a second support frame (18) and a third support frame (19) to ascend so as to drive an anchor net to ascend and closely contact with a composite top plate, so that a reserved construction environment is formed in a roadway;
5) Implanting self-drilling grouting anchor rods into the tunnel roof according to the interval row spacing of 0.8-1.3 m;
6) Pressing Marie powder into the self-drilling grouting anchor rod with grouting pressure of 20Mpa to fill all gaps;
7) Observing a composite roof, and taking the section of the type as a roof management key area when the composite roof and a coal body are crushed loosely;
8) Starting the jack (13), and descending the first support frame (17), the second support frame (18) and the third support frame (19) to separate the anchor net;
9) Repeating the steps 3 and 4, driving anchor rods at 1m intervals, repeatedly paving anchor nets in the region, wherein the overlap joint repetition length between the nets is larger than 180mm, paving a new net below an old net, paving the new net and the old net in a staggered manner, and finishing 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 pushing a first supporting frame (17), a second supporting frame (18) and a third supporting frame (19) to slide on a main I-shaped track (14) and an auxiliary I-shaped track (20) to a new supporting place;
11 Repeating the steps 4-9 to form a new support for the top plate of the support roadway.
The pulley (3) is matched with the roller (2) in design, so that personnel can be assisted in lifting the anchor net, and labor is saved;
the three supporting devices are matched to form a cross type movable supporting structure, so that a supporting support can be formed for the anchor net;
the supporting devices are matched with the designs of the main I-shaped track (14) and the auxiliary I-shaped track (20), so that the supporting devices can conveniently move in a roadway, and the tunneling efficiency is improved;
the jack (13) is matched with the main I-shaped track (14) and the auxiliary I-shaped track (20) and can be used for adjusting the height of the supporting device;
the rubber pad is arranged at one end of the hauling rope (6), so that a person can conveniently hold the hauling 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 the labor-saving structure is achieved when the composite roof is supported.
When the anchor net supporting device is used, the anchor net supporting device is very suitable for some roadways with higher mechanical degree and unsuitable for entering, is more convenient for supporting for part of roadways needing secondary supporting, can reserve a working space for underground workers, and can also support anchor nets in a trouble-saving and labor-saving mode.
The above embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. It is intended that all modifications within the scope of the invention, i.e., all equivalents thereof, be embraced by the invention as they come within their scope without departing from the invention.
It should be further noted that, when the foregoing specific embodiments are described, only the differences from other embodiments are described for simplicity and clarity, but those skilled in the art will appreciate that the foregoing specific embodiments are also independent solutions.
Claims (7)
1. The utility model provides a compound roof of colliery is with strutting arrangement which characterized in that: the device comprises a moving device and a supporting device, three supporting devices comprise a first supporting frame, a second supporting frame and a third supporting frame, three supporting devices are arranged on the moving device in an interactive manner on two sides, when the composite roof supports, a safe operation space can be reserved for workers, the cross type movable supporting structure formed by the three supporting devices is matched with a labor-saving structure to lift an anchor net, the moving device comprises a stand column, a moving base, a moving wheel, a fixed plate, an arc supporting plate, a jack, a main worker-shaped rail and an auxiliary worker-shaped rail, one end of the stand column is provided with the moving base, the moving wheel is arranged in the moving base, the main worker-shaped rail and the auxiliary worker-shaped rail are hinged with the moving base, the main worker-shaped rail and the auxiliary worker-shaped rail are respectively contacted with the edges of the moving wheels, the main worker-shaped rail and the auxiliary worker-shaped rail are respectively arranged on the jack, the jack is arranged on the arc supporting plate, the arc supporting plate is arranged on the arc supporting plate, the supporting device is formed by a connecting rod, rollers, pulleys, supporting rods, an arc supporting frame, a traction rope and a supporting plate, the supporting plate are arranged on the other end of the stand column, the supporting plate is arranged on the stand column, the connecting rod is arranged on the arc supporting plate, the arc supporting frame is connected with the arc supporting frame, the arc supporting rod is arranged on the arc supporting frame, the arc supporting frame is parallel to the arc supporting frame, the arc supporting frame is connected with the arc connecting rod, the arc supporting frame is arranged on the arc connecting rod, the arc supporting frame is parallel to the arc supporting frame, and the arc supporting frame is arranged on the arc connecting rod, and the connecting rod is arranged on the arc supporting frame, and the connecting rod is parallel to the connecting rod, and has the connecting rod and the supporting frame and has an end and the supporting jack and the jack and has an end and the supporting frame and the supporting device The second support frame and the third support frame are arranged on the main I-shaped track and the auxiliary I-shaped track in a crossing way.
2. The supporting device for the composite roof of the coal mine, which is characterized in that the supporting rod is replaced by a telescopic rod with supporting and buffering functions.
3. The supporting device for the composite roof of the coal mine, as claimed in claim 1, wherein the supporting rod is replaced by a pneumatic hydraulic rod connected with a roadway pneumatic system.
4. The supporting device for the composite roof of the coal mine, as claimed in claim 1, is characterized in that a plurality of supporting devices are matched with the design of the main I-shaped track and the auxiliary I-shaped track, and can conveniently move in a roadway.
5. The supporting device for the composite roof of the coal mine, according to claim 1, is characterized in that the jack is matched with the main I-shaped track and the auxiliary I-shaped track, so that the height of the supporting device can be adjusted.
6. The supporting device for the composite roof of the coal mine, which is characterized in that three supporting devices are matched to form a cross type movable supporting structure, so that the supporting device can form lifting support for an anchor net.
7. A method of using a support apparatus for a composite roof for a coal mine as claimed in any one of claims 1 to 6, comprising the steps of:
1) Detecting a roadway roof according to the requirements of composite roof support, and determining an unstable layer and a crack of the composite roof;
2) The method comprises the steps of paving a main I-shaped track and an auxiliary I-shaped track on a roadway bottom plate in parallel, arranging a first support frame, a second support frame and a third support frame on the main I-shaped track and the auxiliary I-shaped track in a crossing manner, and placing clamping blocks on two sides of moving wheels of the first support frame, the second support frame and the third support frame for fixing;
3) The anchor net is hooked by a hook on the traction rope, a person stands below the pulley to pull the traction rope, drives the anchor net to move upwards along the arc-shaped connecting rod, further lifts the anchor net to the top of the support frame, at the moment, the first support frame, the second support frame and the third support frame support the anchor net, and then the hook on the anchor net is taken down;
4) Starting a jack, wherein the jack pushes the main I-shaped track and the auxiliary I-shaped track to ascend, and the main I-shaped track and the auxiliary I-shaped track drive the first support frame, the second support frame and the third support frame to ascend, so that the anchor net is driven to ascend and closely contact with the composite top plate, and a reserved construction environment is formed in a roadway;
5) Implanting self-drilling grouting anchor rods into the tunnel roof according to the interval row spacing of 0.8-1.3 m;
6) Pressing Marie powder into the self-drilling grouting anchor rod with grouting pressure of 20Mpa to fill all gaps;
7) Observing a composite roof, and taking the section of the type as a roof management key area when the composite roof and a coal body are crushed loosely;
8) Starting the jack, and descending the first support frame, the second support frame and the third support frame to separate the anchor net;
9) Repeating the steps 3 and 4, driving anchor rods at 1m intervals, repeatedly paving anchor nets in the area, wherein the overlap repetition length between the nets is larger than 180mm, paving a new net below an old net, paving the new net and the old net in a staggered manner, and finishing supporting work;
10 After the supporting work is completed, starting the jack, separating the supporting frame from the anchor net, repeating the step 3, and pushing the first supporting frame, the second supporting frame and the third supporting frame to slide on the main I-shaped track and the auxiliary I-shaped track to a new supporting place;
11 Repeating the steps 4-9 to form a new support for the top plate of the support 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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| CN113622982A CN113622982A (en) | 2021-11-09 |
| CN113622982B true CN113622982B (en) | 2023-08-08 |
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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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB862210A (en) * | 1956-04-25 | 1961-03-01 | Karl Balthasar | Mine roof supports |
| CN106401623A (en) * | 2016-11-09 | 2017-02-15 | 安徽理工大学 | Full-closed coal mining device for soil-like coal working face and coal mining method of full-closed coal mining device |
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| CN106499422A (en) * | 2016-11-22 | 2017-03-15 | 山西晋城无烟煤矿业集团有限责任公司 | Anti- work surface rolls cash method |
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| CN110331996A (en) * | 2019-07-09 | 2019-10-15 | 山东科技大学 | The purely mechanic semi-automatic mobile laneway temporary support device of one kind and working method |
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