CN205532652U - Rock cross -cut coal uncovering 's enhancement supporting construction under complex geological condition - Google Patents
Rock cross -cut coal uncovering 's enhancement supporting construction under complex geological condition Download PDFInfo
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- CN205532652U CN205532652U CN201620256004.0U CN201620256004U CN205532652U CN 205532652 U CN205532652 U CN 205532652U CN 201620256004 U CN201620256004 U CN 201620256004U CN 205532652 U CN205532652 U CN 205532652U
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Abstract
The utility model discloses a rock cross -cut coal uncovering's enhancement supporting construction under complex geological condition, the coal road that forms after taking off the coal, the section of coal road is trapezoidal, and the both sides of coal road are equipped with the canopy leg, and the top of both sides canopy leg forms the canopy through top beam connected and struts, and the coal road footpath inwards is equipped with the multiunit canopy and struts, reinforcing bar net has still been laid on the back timber, between the canopy leg that every group canopy was strutted, between the canopy leg strutted of adjacent canopy and all be provided with the gallows timber between the back timber. Adopt the utility model provides a supporting construction struts effectually, can guarantee the safety of being under construction, and stable in structure.
Description
Technical field
This utility model relates to exposed coal technology, is especially adapted for use in complicated geologic conditions, the stone door punching coal of country rock instability, the strengthening supporting structure of stone door punching coal under a kind of complex geological condition.
Background technology
The gas that coal and gas prominent is contained in coal seam throws to suddenly a kind of dynamic phenomenon in digging space in very short time.Coal and gas prominent once occurs, and will destroy tunnel facility, ventilating system, is full of gas and coal dust, causes gas asphyxiation, in some instances it may even be possible to can cause the serious consequences such as coal dust and gas explosion in making mine.And coal and gas prominent easily occurs during stone door punching coal.
Stone door punching coal refer to crossdrift from the minimum normal distance 5m away from the projecting coal bed end (top) plate start to through coal seam enter top (end) plate 2m(minimum normal distance) whole process.Condition of coal seam occurrence must be carried out forward probe before stone door punching coal, determine the accurate location of institute's exposed coal layer, inclination angle, thickness and roof and floor lithologic and geological structure etc., the special design of exposed coal should be worked out simultaneously.At present stone door punching coal technology mainly has following several form:
(1) coal seam pressure relief technology: in terms of coal seam pressure relief, currently mainly there are hydraulic slotted liner technique and hydraulic flushing in hole etc., these measures can effectively reduce crustal stress and gas pressure, but also destroy coal and rock integrity simultaneously, its intensity is made to reduce, even can be formed " gas pocket " in coal seam, become potential dangerous matter sources.
(2) metallic framework reinforcing coal rock mass: during exposed coal, uses metallic framework that tunnel is carried out strengthening supporting, can preferably maintain adjoining rock stability.Together with being not bonded between metallic framework with coal and rock, it is formed without organically coalition.When coal and rock deforms, metallic framework can not effectively stop the deformation of coal and rock, and therefore the effect of metallic framework opposing coal and rock deformation is undesirable.
(3) grouting reinforcement technique: slip casting in coal body, can be effectively improved the intensity of coal body by slip casting.During slip casting, cement mortar only can spread in borehole fissure, and because crustal stress, gas pressure are relatively big, the fracture opening causing coal body is little, and the dilation angle of slurry is limited.Therefore make what coal body reinforced to be limited in scope by slip casting；In slurry flow process, resistance is big, and pressure required during slip casting is higher, therefore also increases the danger of operation and the difficulty of sealing of hole.
At present, stone door punching coal technology is concentrated mainly in terms of coal mass relief with coal and rock reinforcing, and achieves good effect.It is preferable that these technology are applicable to geological conditions, and the big-and-middle-sized mine that mine technology equipment is high, but is not suitable for complicated geologic conditions, the poor small mine of mine technology.
Summary of the invention
The strengthening supporting structure of stone door punching coal, its reasonable in design under a kind of complex geological condition that this utility model provides, supporting effect is good, it is possible to ensure construction safety.
For solving above-mentioned technical problem, this utility model be the technical scheme is that the strengthening supporting structure of stone door punching coal under a kind of complex geological condition, including the coal road formed after exposed coal, the section of coal road is trapezoidal, the both sides of coal road are provided with canopy lower limb, the top of both sides canopy lower limb connects formation canopy supporting by back timber, and coal road footpath is provided inwardly with organizing canopy supporting more；Also it is equipped with bar-mat reinforcement on back timber, often between the canopy lower limb of group canopy supporting, between the canopy lower limb of adjacent canopy supporting and between back timber, is provided with gallows timber.
Distance between two adjacent groups canopy supporting is 0.5m；When geological structure is the most complicated, crustal stress is bigger, for making coal road roadway surrounding rock stable, can take the mode to canopy supporting, the most often group canopy supporting all uses twin beams both legs to carry out strengthening supporting.It addition, when seat earth is the soft end, canopy lower limb bottom place mat work stone (300 × 250 × 200mm) carries out wear shoes supporting, to prevent canopy lower limb from sealing in base plate.
The grid of described bar-mat reinforcement is 50mm × 50mm, fixing by iron wire kink between adjacent bar-mat reinforcement, is guaranteed the safety in coal road by bar-mat reinforcement, prevents coal cinder from dropping and hurt sb.'s feelings.
The side of described canopy lower limb is coal body, is additionally provided with multiple plank between canopy lower limb and coal body, for preventing loose coal body to be caving.
The rock gangway that this structure exists before also including exposed coal, the section of rock gangway is semicircular arch, the periphery of rock gangway arranges U-shaped bow member, U-shaped bow member is externally provided with concrete layer, many anchor poles and anchor cable it is additionally provided with on concrete layer, anchor pole and anchor cable are staggered, and its one end is fixed in concrete layer, and the other end is fixed in the coal body on rock gangway side.
The periphery of described rock gangway arranges the U-shaped bow member of many groups, and the spacing between U-shaped bow member is 0.8m.
Structure provided by the utility model, during exposed coal, organically combines the rock gangway strengthening supporting before exposed coal with the strengthening supporting of coal road after exposed coal.According to the crossdrift feature that surrounding rock stability is different in rock stratum, coal seam, take in rock stratum, coal seam, construct different section configurations and take different support forms, thus ensure the stability of crossdrift.
It is preferable that traditional stone door punching coal technology is applicable to geological conditions, and the big-and-middle-sized mine that mine technology equipment is high.But small mine more complicated at geological structure, that mine technology level is relatively low, as still used these technology, will appear from the situations such as exposed coal is relatively costly, exposed coal effect is undesirable.Using the supporting construction in this utility model, supporting effect is good, it is possible to ensure construction safety, and Stability Analysis of Structures.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment 1.
Fig. 2 is the structural representation of this utility model embodiment 2.
1, coal road；2, canopy lower limb；3, back timber；4, bar-mat reinforcement；5, gallows timber；6、Plank；7, rock gangway；8, U-shaped bow member；9, concrete layer；10, anchor pole；11, anchor cable；
Detailed description of the invention
Further illustrate this utility model below in conjunction with embodiment and accompanying drawing, but the scope that this utility model claims is not limited to the scope that embodiment is stated.
Embodiment 1:
As it is shown in figure 1, the strengthening supporting structure of stone door punching coal under a kind of complex geological condition, including the coal road 1 formed after exposed coal, the section of coal road 1 is trapezoidal, the both sides of coal road 1 are provided with canopy lower limb 2, and the top of both sides canopy lower limb 2 connects formation canopy supporting by back timber 3, and coal road 1 footpath is provided inwardly with organizing canopy supporting more；Also it is equipped with bar-mat reinforcement 4 on back timber 3, often between the canopy lower limb of group canopy supporting, between the canopy lower limb of adjacent canopy supporting and between back timber, is provided with gallows timber 5.
Further, the distance between the supporting of two adjacent groups canopy is 0.5m.
Further, the grid of described bar-mat reinforcement 4 is 50mm × 50mm, fixing by iron wire kink between adjacent bar-mat reinforcement.
Further, the side of described canopy lower limb 2 is coal body, is additionally provided with multiple plank 6 between canopy lower limb 2 and coal body, and its thickness is 2-4cm.
Embodiment 2:
As shown in Figure 2, the strengthening supporting structure of stone door punching coal under a kind of complex geological condition, the rock gangway 7 that this structure exists before also including exposed coal, the section of rock gangway 7 is semicircular arch, and the periphery of rock gangway 7 arranges U-shaped bow member 8, is sprayed with concrete layer 9 outside U-shaped bow member 8, many anchor poles 10 and anchor cable 11 it is additionally provided with on concrete layer 9, anchor pole 10 and anchor cable 11 are staggered, and its one end is fixed in concrete layer, and the other end is fixed in the rock mass on rock gangway side.The a length of 1.8m of described anchor pole, a length of 6m of anchor cable.
The periphery of described rock gangway 7 arranges the U-shaped bow member 8 of many groups, and the spacing between U-shaped bow member 8 is 0.8m.
Use above-mentioned supporting construction to carry out stone door punching coal, the rock gangway strengthening supporting before exposed coal is organically combined with the strengthening supporting of coal road after exposed coal, stablizing of construction safety and crossdrift can be guaranteed by Canis familiaris L..
Claims (6)
1. the strengthening supporting structure of stone door punching coal under a complex geological condition, including the coal road (1) formed after exposed coal, it is characterized in that: the section of coal road (1) is trapezoidal, the both sides of coal road (1) are provided with canopy lower limb (2), the top of both sides canopy lower limb (2) connects formation canopy supporting by back timber (3), and coal road (1) footpath is provided inwardly with organizing canopy supporting more；Also it is equipped with bar-mat reinforcement (4) on back timber (3), often between the canopy lower limb of group canopy supporting, between the canopy lower limb of adjacent canopy supporting and between back timber, is provided with gallows timber (5).
Structure the most according to claim 1, it is characterised in that: the distance between two adjacent groups canopy supporting is 0.5m.
Structure the most according to claim 1, it is characterised in that: the grid of described bar-mat reinforcement (4) is 50mm × 50mm, fixing by iron wire kink between adjacent bar-mat reinforcement.
Structure the most according to claim 1, it is characterised in that: the side of described canopy lower limb (2) is coal body, is additionally provided with multiple plank (6) between canopy lower limb (2) and coal body.
Structure the most according to claim 1, it is characterized in that: the rock gangway (7) that this structure exists before also including exposed coal, the section of rock gangway (7) is semicircular arch, the periphery of rock gangway (7) arranges U-shaped bow member (8), U-shaped bow member (8) is externally provided with concrete layer (9), concrete layer (9) is additionally provided with many anchor poles (10) and anchor cable (11), anchor pole (10) and anchor cable (11) and is staggered, its one end is fixed in concrete layer, and the other end is fixed in the coal body on rock gangway side.
Structure the most according to claim 5, it is characterised in that: the periphery of described rock gangway (7) arranges the U-shaped bow member of many groups (8), and the spacing between U-shaped bow member (8) is 0.8m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620256004.0U CN205532652U (en) | 2016-03-30 | 2016-03-30 | Rock cross -cut coal uncovering 's enhancement supporting construction under complex geological condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620256004.0U CN205532652U (en) | 2016-03-30 | 2016-03-30 | Rock cross -cut coal uncovering 's enhancement supporting construction under complex geological condition |
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| CN205532652U true CN205532652U (en) | 2016-08-31 |
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| CN201620256004.0U Expired - Fee Related CN205532652U (en) | 2016-03-30 | 2016-03-30 | Rock cross -cut coal uncovering 's enhancement supporting construction under complex geological condition |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948842A (en) * | 2017-03-31 | 2017-07-14 | 兖州煤业股份有限公司 | A kind of scaffolding structure for being used under thin dirt band cover coal road |
| CN108049898A (en) * | 2018-01-16 | 2018-05-18 | 湖南科技大学 | A kind of support system and its method for protecting support for coal road weak broken top plate |
| CN108222984A (en) * | 2018-01-04 | 2018-06-29 | 晋城煤炭规划设计院 | The advance support structure of the loose coal road of breaking roof |
-
2016
- 2016-03-30 CN CN201620256004.0U patent/CN205532652U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948842A (en) * | 2017-03-31 | 2017-07-14 | 兖州煤业股份有限公司 | A kind of scaffolding structure for being used under thin dirt band cover coal road |
| CN108222984A (en) * | 2018-01-04 | 2018-06-29 | 晋城煤炭规划设计院 | The advance support structure of the loose coal road of breaking roof |
| CN108049898A (en) * | 2018-01-16 | 2018-05-18 | 湖南科技大学 | A kind of support system and its method for protecting support for coal road weak broken top plate |
| CN108049898B (en) * | 2018-01-16 | 2024-01-26 | 湖南科技大学 | Supporting system and supporting method for weak broken roof of coal roadway |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |