CN105351006A - Coal-pillar-free gob-side entry retaining soft curtain sealing device and use method thereof - Google Patents
Coal-pillar-free gob-side entry retaining soft curtain sealing device and use method thereof Download PDFInfo
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- CN105351006A CN105351006A CN201510939712.4A CN201510939712A CN105351006A CN 105351006 A CN105351006 A CN 105351006A CN 201510939712 A CN201510939712 A CN 201510939712A CN 105351006 A CN105351006 A CN 105351006A
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- 238000007789 sealing Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000003245 coal Substances 0.000 claims abstract description 31
- 238000005065 mining Methods 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 238000005422 blasting Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000178 monomer Substances 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 4
- 235000011613 Pinus brutia Nutrition 0.000 claims description 4
- 241000018646 Pinus brutia Species 0.000 claims description 4
- 238000004880 explosion Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/12—Dam doors
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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)
- Bridges Or Land Bridges (AREA)
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Abstract
The invention discloses a coal-pillar-free gob-side entry retaining soft curtain sealing device, comprising a support mechanism and a sealing mechanism, wherein the sealing mechanism comprises a piece of flexible curtain cloth and a locating component used for fixing the upper edge of the flexible curtain cloth on the top plate of a gate road and fixing the lower edge of the flexible curtain cloth on the bottom plate of the gate road, and the support mechanism comprises a transverse support component and a longitudinal support component. The invention further discloses a use method of the coal-pillar-free gob-side entry retaining soft curtain sealing device. The method comprises the steps of digging two gate roadways and an open-off cut of a first coal mining face to form a first coal mining face; before working face mining, carrying out advanced directional blasting on an immediate roof; arranging the flexible curtain cloth, installing the support mechanism, and carrying out guniting treatment on the upper end face of an upper clamping plate and the bottom end face of a lower clamping plate; arranging the next group of sealing mechanism and support mechanism according to the steps. According to the invention, flexible pressure avoidance are achieved for a tunnel roof, and thorough isolation and wind reciprocation of the tunnel and the gob are ensured.
Description
Technical field
The present invention relates to gob side entry retaining sealing device and application process thereof, particularly relate to a kind of without the soft curtain sealing device of coal column gob side entry retaining and using method thereof.
Background technology
The exploitation method adopting traditional coal column to protect lane wastes a large amount of coal resources, and on coal column, gathered a large amount of elasticity of compression energy, therefore the dynamic disasters such as easy initiation bump, coal and gas prominent, are the direction of coal mining development without coal pillar mining technology.Adopt explosion Advance presplitting immediate roof without coal column Qie Dingcheng lane technology, under the effect of stope periodic weighting, immediate roof is settled down to formation lane, end side, and isolated goaf, achieves without coal pillar mining, improves the distribution of stope ambient stress.Behind coal column Qie Dingcheng lane, the thoroughly isolated Shi Liu lane realizing tunnel and old man (goaf) is successfully crucial.In order to ensure tunnel and goaf thoroughly isolated, do not go here and there wind, conventional method often needs to adopt channel-section steel to reinforce lane side, and Zai Xiang helps in lane the technique of a large amount of slip casting, not only wastes a large amount of manpower, financial resources, and may affect work plane and normally take over program.At present, Qie Dingcheng lane technology is mainly used in girdle, due to always push up revolution subsiding extent less, lane side rigidity body of wall and coal seam floor failure degree still not obvious.For high seam, old top revolution sinking amplitude is comparatively large, according to existing rigidity body of wall Sealing Technology, and heaving of the distortion very easily causing lane to help and base plate.
As can be seen here, prior art awaits further improving.
Summary of the invention
The present invention is the weak point avoiding above-mentioned prior art to exist, provide a kind of realize to the flexibility of back allow pressure and good seal performance without the soft curtain sealing device of coal column gob side entry retaining and using method thereof.
The technical solution adopted in the present invention is:
Without the soft curtain sealing device of coal column gob side entry retaining, comprise supporting mechanism and help wall for closed gate road, completely cut off the sealing mechanism in gate road and goaf, sealing mechanism comprises flexible cord and for the upper edge of flexible cord being fixed on gate road top board, the lower edge of flexible cord being fixed on the positioning component on gate road base plate, and supporting mechanism comprises the lateral support member that the length direction along flexible cord supports flexible cord and the longitudinal bracing assembly supported flexible cord along the short transverse of flexible cord.
Described positioning component comprises train wheel bridge and lower plate, upper and lower clamping plate all offer clip slot along respective length direction, realize fastening location by several bolt and nut securing members that the length direction along train wheel bridge is uniform in the clip slot that the upper edge of flexible cord is placed in train wheel bridge, in the clip slot that the lower edge of flexible cord is placed in lower plate, also realize fastening location by several bolt and nut securing members that the length direction along lower plate is uniform.
Described upper and lower clamping plate are respectively by anchor pole coupling assembling and gate road top, being connected of base plate, anchor pole coupling assembling comprises anchor pole, clamp nut and pallet, one end of anchor pole is connected with the top of gate road, base plate, the other end of anchor pole is through the upper and lower clamping plate corresponding with anchor pole and by the fastening location of clamp nut, pallet is arranged between clamp nut and upper and lower clamping plate.
Described train wheel bridge and lower plate are flexible clamping plate, and upper and lower clamping plate are made by rubber flame-retarded material.
Described longitudinal bracing assembly and lateral support member are positioned at the same side of flexible cord, described longitudinal bracing assembly comprises guide peg, guide peg comprises the fixed bar and motion bar that are connected with each other, fixed bar is positioned at the below of motion bar, motion bar can be elevated along the short transverse of flexible cord, the external diameter of fixed bar is greater than the external diameter of motion bar, and the bottom of fixed bar is connected with lower plate, and the top of motion bar is connected with train wheel bridge; Described lateral support member comprises some transverse support bar, and some transverse support bar equidistantly distribute in the short transverse of flexible cord; The relative position of described flexible cord and each transverse support bar is provided with several transverse support bar location divisions along the length direction of flexible cord, each transverse support bar location division includes two colligation cloths, and one end of two colligation cloths is connected with flexible cord respectively, the other end complements each other to form and locates the colligation of transverse support bar.
Described fixed bar is connected respectively by the transverse support bar of several snap component with respective heights place along respective short transverse with motion bar, each snap component includes the first clip and the second clip, first clip is nested with on fixed bar and motion bar, second clip is nested with in transverse support bar, first clip is connected with the second clip by connecting rod, the axis of the first clip is mutually vertical with the axis of the second clip, first clip is identical from the structure of the second clip but internal diameter is different, the internal diameter of the first clip is greater than the internal diameter of the second clip, the internal diameter of the first clip is greater than the external diameter of motion bar, during connection, first clip fastens fixed bar, second clip fastens transverse support bar, first clip pine entangles motion bar simultaneously, flexible cord is elevated with the lifting of motion bar, described fixed bar is monomer liquid cylinder pressure, and the piston rod in monomer liquid cylinder pressure forms above-mentioned motion bar.
Described first clip and the second clip include the first half segmental arcs and the second half segmental arcs, one end of the first half segmental arcs and one end of the second half segmental arcs be rotationally connected, the other end of the other end of the first half segmental arcs and the second half segmental arcs is for being fixedly connected with; One end of the first half segmental arcs is provided with locating convex block, and locating convex block offers first turn of hole, one end of the second half segmental arcs offers the groove that can hold locating convex block, and the upper and lower that the second half segmental arcs arrange this one end of groove offers the second turn hole relative with first turn of hole site respectively, the first half segmental arcs arrange one end that one end of locating convex block and the second half segmental arcs arrange groove and realize being rotationally connected by the rotating shaft through first turn of hole, second turn of hole; The other end of first, second half segmental arc is provided with location flange, and the location flange of the location flange of the first half segmental arcs and the second half segmental arcs realizes fastening location by bolt and nut securing member.
Described sealing mechanism connects layout along gate road length direction near many groups, side, goaf, corresponding, supporting mechanism is provided with many groups, the flexible cord of each sealing mechanism is arranged side by side along gate road length direction, linked by omnipotent stickup between the flexible cord of each sealing mechanism and connect, each omnipotent stickup deduction of points is not arranged on left end and the right-hand member of flexible cord, connecting bolt is passed through between the transverse support bar of each supporting mechanism, attaching nut is connected, one end of transverse support bar offers screwed hole, the other end is provided with external screw thread, attaching nut's half screws in the external screw thread place of transverse support bar, one end of connecting bolt screws in the screwed hole of transverse support bar, the other end of connecting bolt screws in second half of attaching nut.
The invention also discloses a kind of using method without the soft curtain sealing device of coal column gob side entry retaining as above, the method comprises the steps:
Step one, digs two crossheadings and the open-off cut of first mining face, forms first mining face; Before working face mining, at top board and the base plate place skyhook of gate road, upper and lower clamping plate are parallel to gateroad floor is fixed on anchor pole apart from rib 10 ~ 15cm place of coal-face simultaneously, pallet by clamp nut upper and lower clamping plate are tied respectively be attached to gate road top board and base plate on;
Step 2, before working face mining, advanced directional blasting immediate roof; Press close to coal-face side along lower gate road and beat blasting boreholes, and explosive is installed, carry out immediate roof explosion presplitting joint-cutting;
Step 3, installs flexible cord, to be close to by flexible cord in the clip slot being fixed to upper and lower clamping plate by bolt and nut securing member;
Step 4, supporting mechanism is installed, transverse support bar is fixed through flexible cord carries out colligation along the colligation cloth being parallel to gate road length direction layout, all transverse support bar are installed from bottom to top successively, then fixed bar is arranged on the centre position of lower plate, inject emulsion in monomer liquid cylinder pressure, make the top of motion bar be arranged on the centre position of train wheel bridge, afterwards by the first clip and the second clamp connection transverse support bar and fixed bar, motion bar;
Step 5, carries out whitewashing process, makes upper and lower clamping plate be close to top, the base plate of gate road respectively, ensure its sealing effectiveness along the upper surface of train wheel bridge and the bottom face of lower plate;
Step 6, according to step one to step 5, next group sealing mechanism and supporting mechanism are installed successively, linked by omnipotent stickup between the flexible cord of two adjacent groups sealing mechanism and connect, be connected by connecting bolt and attaching nut between the transverse support bar of two adjacent groups supporting mechanism;
Step 7, after subsequent work face pushes through, withdraws from the sealing mechanism and supporting mechanism used in a work plane, for lower bar gate road.
The setting load size of described fixed bar and motion bar is less than Support Resistance.
Owing to have employed technique scheme, the beneficial effect acquired by the present invention is:
1, the flexible cord in the present invention and upper and lower clamping plate all have employed airfast material, are strictly tightly connected between each parts, ensure that wind is not gone here and there in tunnel and goaf.
The rigidity of flexible cord, fixed bar and motion bar 2, in the present invention is all very little, achieve and pressure allows to the flexibility of back, overcome the drawback that lane side destroys, base plate is heaved that rigidity body of wall brings, solve the lane side sealing problem in high seam Qie Dingliu lane.
3, the flexible cord in the present invention and each parts of composition supporting mechanism all can all be recycled, and greatly save sealing cost.
4, structure of the present invention is simple, light, is convenient to install, good seal performance, ensure that tunnel and goaf thoroughly isolated, do not go here and there wind, and construction technique of the present invention is simply, does not affect normally taking over of tunnel.
Accompanying drawing explanation
Fig. 1 be in the present invention without the arrangement diagram of the soft curtain sealing device of coal column gob side entry retaining in tunnel.
Fig. 2 is the stereogram without the soft curtain sealing device of coal column gob side entry retaining in the present invention.
Fig. 3 is the lateral view of Fig. 2.
Fig. 4 is the partial enlarged drawing of Fig. 3.
Fig. 5 shows the connected mode figure of transverse support bar and motion bar in the present invention.
Fig. 6 is the structural representation of snap component in the present invention.
Fig. 7 shows the connected mode figure of adjacent two flexible cords and adjacent two transverse support bar in the present invention.
Fig. 8 is the connected mode schematic diagram of connected two transverse support bar.
Fig. 9 is the connected mode schematic diagram of connected two flexible cords.
Wherein,
1, flexible cord 2, train wheel bridge 3, bolt and nut securing member 4, lower plate 5, anchor pole 6, pallet 7, clamp nut 8, fixed bar 9, motion bar 10, transverse support bar 11, colligation cloth 12, attaching nut 13, snap component 131, first clip 131.1, the first half segmental arcs 131.2, the second half segmental arcs 131.3, locating convex block 131.4, rotating shaft 131.5, location flange 132, second clip 133, connecting rod 14, connecting bolt 15, screwed hole 16, omnipotent Paste button 17, gate road 18, gate road base plate 19, immediate roof
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail, but the present invention is not limited to these embodiments.
As shown in Figures 1 to 9, without the soft curtain sealing device of coal column gob side entry retaining, comprise supporting mechanism and help wall for closed gate road 17, completely cut off the sealing mechanism in gate road and goaf, sealing mechanism comprises flexible cord 1 and for the upper edge of flexible cord 1 being fixed on gate road 17 top board, the lower edge of flexible cord 1 being fixed on the positioning component on gate road 17 base plate, described flexible cord 1 adopts flame-retardant and anti-static flexible PVC material to make, be specially with high-strength polyester lattice cloth for skeleton, PVC plastic is filled and is made, described positioning component comprises train wheel bridge 2 and lower plate 4, and train wheel bridge 2 and lower plate 4 are flexible clamping plate, and the flexible characteristic of upper and lower clamping plate can make it adapt to the roughness of top, tunnel, base plate, and upper and lower clamping plate are made by rubber flame-retarded material, upper and lower clamping plate all offer clip slot along respective length direction, upper and lower clamping plate along the section of respective width all in V-shape, in the clip slot that the upper edge of flexible cord 1 is placed in train wheel bridge 2 and by realizing fastening location along several bolt and nut securing members 3 that the length direction of train wheel bridge 2 is uniform, in the clip slot that the lower edge of flexible cord 1 is placed in lower plate 4 and by realizing fastening location along several bolt and nut securing members 3 that the length direction of lower plate 4 is uniform, and on, lower plate is connected respectively by anchor pole coupling assembling and gate road 17 top board and gate road base plate 18, anchor pole coupling assembling comprises anchor pole 5, clamp nut 7 and pallet 6, one end of anchor pole 5 and the top of gate road 17, base plate is connected, the other end of anchor pole 5 is through corresponding with anchor pole 5 upper, lower plate also passes through the fastening location of clamp nut 7, pallet 6 is arranged on clamp nut 7 with upper, between lower plate.
Supporting mechanism comprises the lateral support member that the length direction along flexible cord 1 supports flexible cord and the longitudinal bracing assembly supported flexible cord 1 along the short transverse of flexible cord 1; Described longitudinal bracing assembly and lateral support member are positioned at the same side of flexible cord 1, described longitudinal bracing assembly comprises guide peg, guide peg comprises the fixed bar 8 and motion bar 9 that are connected with each other, fixed bar 8 is positioned at the below of motion bar 9, motion bar 9 can be elevated along the short transverse of flexible cord, the external diameter of fixed bar 8 is greater than the external diameter of motion bar 9, and the bottom of fixed bar 8 is connected with lower plate 4, and the top of motion bar 9 is connected with train wheel bridge 2; Described lateral support member comprises some transverse support bar 10, and some transverse support bar 10 equidistantly distribute in the short transverse of flexible cord 1; The relative position of described flexible cord 1 and each transverse support bar 10 is provided with several transverse support bar location divisions along the length direction of flexible cord 1, one end that each transverse support bar location division includes two colligation cloths, 11, two colligation cloths 11 is connected with flexible cord 1 respectively, the other end complements each other to form and locates the colligation of transverse support bar 10.It should be noted that the form of structure of transverse support bar location division is not limited only to the mode of above-mentioned colligation cloth 11, colligation cloth 11 can also be replaced with Paste button, as long as the colligation positioning instant that can realize between transverse support bar 10 and flexible cord 1 can.
Described fixed bar 8 is connected with the transverse support bar 10 at respective heights place respectively by several snap component 13 along respective short transverse with motion bar 9, each snap component 13 includes the first clip 131 and the second clip 132, first clip 131 is nested with on fixed bar 8 and motion bar 9, second clip 132 is nested with in transverse support bar 10, first clip 131 is connected with the second clip 132 by connecting rod 133, the axis of the first clip 131 is mutually vertical with the axis of the second clip 132, first clip 131 is identical from the structure of the second clip 132 but internal diameter is different, the internal diameter of the first clip 131 is greater than the internal diameter of the second clip 132, the internal diameter of the first clip 131 is greater than the external diameter of motion bar 9, the internal diameter of the first clip 131 is slightly less than the external diameter of fixed bar 8, the internal diameter of the second clip 132 is slightly less than the external diameter of transverse support bar 10, during connection, the first clip 131 fastens fixed bar 8, and the second clip 132 fastens transverse support bar 10, and the first clip 131 pine entangles motion bar 9 simultaneously, and flexible cord 1 can be elevated with the lifting of motion bar 9.That is, being static connection between the first clip 131 and fixed bar 8, is non-being fastenedly connected between the first clip 131 and motion bar 9, like this, when motion bar 9 is elevated, can be elevated along the first clip 131, what the first clip 131 played motion bar 9 is guide effect; And be static connection between the second clip 132 and support bar 10, while the second clip 132 realizes a support force to support bar 10, can, when motion bar 9 is elevated, drive support bar 10 to be elevated, and then drive flexible cord 1 to be elevated.
Described first clip 131 and the second clip 132 include the first half segmental arcs 131.1 and the second half segmental arcs 131.2, one end of the first half segmental arcs 131.1 and one end of the second half segmental arcs 131.2 be rotationally connected, the other end of the other end of the first half segmental arcs 131.1 and the second half segmental arcs 131.2 is for being fixedly connected with; One end of the first half segmental arcs 131.1 is provided with locating convex block 131.3, and locating convex block 131.3 offers first turn of hole, one end of the second half arcs 131.2 sections offers the groove that can hold locating convex block 131.3, and the upper and lower that the second half segmental arcs 131.2 arrange this one end of groove offers the second turn hole relative with first turn of hole site respectively, the first half segmental arcs 131.1 arrange one end that one end of locating convex block 131.8 and the second half segmental arcs 131.2 arrange groove and realize being rotationally connected by the rotating shaft 131.4 through first turn of hole, second turn of hole; The other end of first, second half segmental arc is provided with location flange 131.5, and the location flange of the location flange of the first half segmental arcs 131.1 and the second half segmental arcs 131.2 realizes fastening location by bolt and nut securing member.It should be noted that, the form of structure of the first clip 131 and the second clip 132 is not limited only to the form of structure of above-mentioned the first half segmental arcs 131.1, the second half segmental arcs 131.2, as long as can realize the first clip 131 can fasten fixed bar 8 pine and entangle motion bar 9, the frame for movement that the second clip 132 can fasten transverse support bar 9 all can meet the demands.Similarly, first clip 131 is also not limited only to above-mentioned form of structure with the mode that one end is rotationally connected, the other end is fixedly connected with of the second clip 132, any one end that can realize both is rotated mutually, and the other end is all passable by the form of structure that mechanical component is mutually fastening.
Preferably, described guide peg is monomer liquid cylinder pressure, and the cylinder body of monomer liquid cylinder pressure forms above-mentioned fixed bar 8, and the piston rod in monomer liquid cylinder pressure forms above-mentioned motion bar 9.It should be noted that, guide peg also can be arranged to other form of structure, as long as the rod member that can meet bottom maintains static, the rod member on top can stretch along the short transverse of flexible cord.
Described sealing mechanism connects layout along gate road length direction near many groups, side, goaf, corresponding, supporting mechanism is provided with many groups, the flexible cord 1 of each sealing mechanism is arranged side by side along gate road length direction, the left end of each flexible cord 1 and right-hand member are respectively arranged with omnipotent Paste button 16, pasted by omnipotent Paste button 16 between the flexible cord 1 of each sealing mechanism and be connected, by connecting bolt 14 between the transverse support bar 10 of each supporting mechanism, attaching nut 12 is connected, one end of transverse support bar 10 offers screwed hole 15, the other end is provided with external screw thread, attaching nut 12 half screws in the external screw thread place of transverse support bar 10, one end of connecting bolt 14 screws in the screwed hole 15 of transverse support bar 10, the other end of connecting bolt 14 screws in second half of attaching nut 12.It should be noted that, the connected mode between adjacent two flexible cords 1 is not limited only to the bonding method of above-mentioned omnipotent Paste button 16, as long as the form of structure that adjacent two flexible joint realize being tightly connected all can be able to be met the demands; The connected mode of the transverse support bar 10 that two of two adjacent groups supporting mechanism are corresponding is also not limited only to above-mentioned connecting bolt 14, attaching nut 12, screwed hole 15 and externally threaded form of structure, as long as the mechanical mechanism be fastenedly connected that can realize two corresponding transverse support bar 10 all can meet the demands.
As shown in Figures 1 to 9, the invention also discloses a kind of using method without the soft curtain sealing device of coal column gob side entry retaining as above, the method comprises the steps:
Step one, digs first mining face two crossheadings and open-off cut, forms first mining face; Before working face mining, at top board and the base plate place skyhook 5 of gate road 17, the rib 15cm place simultaneously upper and lower clamping plate being parallel to gate road distance from bottom coal-face is fixed on anchor pole, pallet 6 by clamp nut 7 upper and lower clamping plate are tied respectively be attached to gate road 17 top board and base plate on;
Step 2, before working face mining, advanced directional blasting immediate roof; Press close to coal-face side along lower gate road and beat blasting boreholes, and explosive is installed, carry out immediate roof explosion presplitting joint-cutting;
Step 3, installs flexible cord 1, to be close to by flexible cord 1 in the clip slot being fixed to upper and lower clamping plate by bolt and nut securing member 3;
Step 4, supporting mechanism is installed, transverse support bar 10 is fixed through flexible cord 1 carries out colligation along the colligation cloth 11 being parallel to gate road length direction layout, all transverse support bar 10 are installed from bottom to top successively, then fixed bar 8 is arranged on the centre position of lower plate 4, emulsion is injected in monomer liquid cylinder pressure, make the top of motion bar 9 be arranged on the centre position of train wheel bridge 2, be connected transverse support bar 10 and fixed bar 8, motion bar 9 by the first clip 131 with the second clip 132 afterwards;
Step 5, carries out whitewashing process, makes upper and lower clamping plate be close to top, the base plate of gate road respectively, ensure its sealing effectiveness along the upper surface of train wheel bridge 2 and the bottom face of lower plate 4;
Step 6, according to step one to step 5, next group sealing mechanism and supporting mechanism are installed successively, connected by omnipotent Paste button 13 between the flexible cord 1 of two adjacent groups sealing mechanism, be connected by connecting bolt 14 and attaching nut 12 between the transverse support bar 10 of two adjacent groups supporting mechanism;
Step 7, after subsequent work face pushes through, withdraws from the sealing mechanism and supporting mechanism used in a work plane, for lower bar gate road.
The setting load size of described fixed bar 8 and motion bar 9 is much smaller than Support Resistance, concrete size needs to determine according to the parameter such as supporting height, ventilation blast of gate road 17, setting load only plays the effect of stable flexible cord, and do not require the effect preventing back from sinking, while immediate roof is declined, motion bar declines thereupon, and then the top of flexible cord 1 is declined.
The part do not addressed in the present invention adopts or uses for reference prior art and can realize.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
Specific embodiment described herein is only to spiritual example explanation of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. without the soft curtain sealing device of coal column gob side entry retaining, it is characterized in that, comprise supporting mechanism and help wall for closed gate road, completely cut off the sealing mechanism in gate road and goaf, sealing mechanism comprises flexible cord and for the upper edge of flexible cord being fixed on gate road top board, the lower edge of flexible cord being fixed on the positioning component on gate road base plate, and supporting mechanism comprises the lateral support member that the length direction along flexible cord supports flexible cord and the longitudinal bracing assembly supported flexible cord along the short transverse of flexible cord.
2. according to claim 1 without the soft curtain sealing device of coal column gob side entry retaining, it is characterized in that, described positioning component comprises train wheel bridge and lower plate, upper and lower clamping plate all offer clip slot along respective length direction, realize fastening location by several bolt and nut securing members that the length direction along train wheel bridge is uniform in the clip slot that the upper edge of flexible cord is placed in train wheel bridge, in the clip slot that the lower edge of flexible cord is placed in lower plate, also realize fastening location by several bolt and nut securing members that the length direction along lower plate is uniform.
3. according to claim 2 without the soft curtain sealing device of coal column gob side entry retaining, it is characterized in that, described upper and lower clamping plate are respectively by anchor pole coupling assembling and gate road top, being connected of base plate, anchor pole coupling assembling comprises anchor pole, clamp nut and pallet, one end of anchor pole is connected with the top of gate road, base plate, the other end of anchor pole is through the upper and lower clamping plate corresponding with anchor pole and by the fastening location of clamp nut, pallet is arranged between clamp nut and upper and lower clamping plate.
4. according to claim 1 without the soft curtain sealing device of coal column gob side entry retaining, it is characterized in that, described train wheel bridge and lower plate are flexible clamping plate, and upper and lower clamping plate are made by rubber flame-retarded material.
5. according to claim 3 without the soft curtain sealing device of coal column gob side entry retaining, it is characterized in that, described longitudinal bracing assembly and lateral support member are positioned at the same side of flexible cord, described longitudinal bracing assembly comprises guide peg, guide peg comprises the fixed bar and motion bar that are connected with each other, fixed bar is positioned at the below of motion bar, motion bar can be elevated along the short transverse of flexible cord, the external diameter of fixed bar is greater than the external diameter of motion bar, the bottom of fixed bar is connected with lower plate, and the top of motion bar is connected with train wheel bridge; Described lateral support member comprises some transverse support bar, and some transverse support bar equidistantly distribute in the short transverse of flexible cord; The relative position of described flexible cord and each transverse support bar is provided with several transverse support bar location divisions along the length direction of flexible cord, each transverse support bar location division includes two colligation cloths, and one end of two colligation cloths is connected with flexible cord respectively, the other end complements each other to form and locates the colligation of transverse support bar.
6. according to claim 5 without the soft curtain sealing device of coal column gob side entry retaining, it is characterized in that, described fixed bar is connected respectively by the transverse support bar of several snap component with respective heights place along respective short transverse with motion bar, each snap component includes the first clip and the second clip, first clip is nested with on fixed bar and motion bar, second clip is nested with in transverse support bar, first clip is connected with the second clip by connecting rod, the axis of the first clip is mutually vertical with the axis of the second clip, first clip is identical from the structure of the second clip but internal diameter is different, the internal diameter of the first clip is greater than the internal diameter of the second clip, the internal diameter of the first clip is greater than the external diameter of motion bar, during connection, first clip fastens fixed bar, second clip fastens transverse support bar, first clip pine entangles motion bar simultaneously, flexible cord is elevated with the lifting of motion bar, described fixed bar is monomer liquid cylinder pressure, and the piston rod in monomer liquid cylinder pressure forms above-mentioned motion bar.
7. according to claim 6 without the soft curtain sealing device of coal column gob side entry retaining, it is characterized in that, described first clip and the second clip include the first half segmental arcs and the second half segmental arcs, one end of the first half segmental arcs and one end of the second half segmental arcs be rotationally connected, the other end of the other end of the first half segmental arcs and the second half segmental arcs is for being fixedly connected with; One end of the first half segmental arcs is provided with locating convex block, and locating convex block offers first turn of hole, one end of the second half segmental arcs offers the groove that can hold locating convex block, and the upper and lower that the second half segmental arcs arrange this one end of groove offers the second turn hole relative with first turn of hole site respectively, the first half segmental arcs arrange one end that one end of locating convex block and the second half segmental arcs arrange groove and realize being rotationally connected by the rotating shaft through first turn of hole, second turn of hole; The other end of first, second half segmental arc is provided with location flange, and the location flange of the location flange of the first half segmental arcs and the second half segmental arcs realizes fastening location by bolt and nut securing member.
8. according to claim 6 without the soft curtain sealing device of coal column gob side entry retaining, it is characterized in that, described sealing mechanism connects layout along gate road length direction near many groups, side, goaf, corresponding, supporting mechanism is provided with many groups, the flexible cord of each sealing mechanism is arranged side by side along gate road length direction, linked by omnipotent stickup between the flexible cord of each sealing mechanism and connect, each omnipotent stickup deduction of points is not arranged on left end and the right-hand member of flexible cord, connecting bolt is passed through between the transverse support bar of each supporting mechanism, attaching nut is connected, one end of transverse support bar offers screwed hole, the other end is provided with external screw thread, attaching nut's half screws in the external screw thread place of transverse support bar, one end of connecting bolt screws in the screwed hole of transverse support bar, the other end of connecting bolt screws in second half of attaching nut.
9., as claimed in claim 8 without a using method for the soft curtain sealing device of coal column gob side entry retaining, it is characterized in that, the method comprises the steps:
Step one, digs two crossheadings and the open-off cut of first mining face, forms first mining face; Before working face mining, at top board and the base plate place skyhook of gate road, upper and lower clamping plate are parallel to gateroad floor is fixed on anchor pole apart from rib 10 ~ 15cm place of coal-face simultaneously, pallet by clamp nut upper and lower clamping plate are tied respectively be attached to gate road top board and base plate on;
Step 2, before working face mining, advanced directional blasting immediate roof; Press close to coal-face side along lower gate road and beat blasting boreholes, and explosive is installed, carry out immediate roof explosion presplitting joint-cutting;
Step 3, installs flexible cord, to be close to by flexible cord in the clip slot being fixed to upper and lower clamping plate by bolt and nut securing member;
Step 4, supporting mechanism is installed, transverse support bar is fixed through flexible cord carries out colligation along the colligation cloth being parallel to gate road length direction layout, all transverse support bar are installed from bottom to top successively, then fixed bar is arranged on the centre position of lower plate, inject emulsion in monomer liquid cylinder pressure, make the top of motion bar be arranged on the centre position of train wheel bridge, afterwards by the first clip and the second clamp connection transverse support bar and fixed bar, motion bar;
Step 5, carries out whitewashing process, makes upper and lower clamping plate be close to top, the base plate of gate road respectively, ensure its sealing effectiveness along the upper surface of train wheel bridge and the bottom face of lower plate;
Step 6, according to step one to step 5, next group sealing mechanism and supporting mechanism are installed successively, linked by omnipotent stickup between the flexible cord of two adjacent groups sealing mechanism and connect, be connected by connecting bolt and attaching nut between the transverse support bar of two adjacent groups supporting mechanism;
Step 7, after subsequent work face pushes through, withdraws from the sealing mechanism and supporting mechanism used in a work plane, for lower bar gate road.
10. the using method without the soft curtain sealing device of coal column gob side entry retaining according to claim 9, is characterized in that, the setting load size of described fixed bar and motion bar is less than Support Resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510939712.4A CN105351006B (en) | 2015-12-16 | 2015-12-16 | Without the soft curtain sealing device of coal column gob side entry retaining and its application method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510939712.4A CN105351006B (en) | 2015-12-16 | 2015-12-16 | Without the soft curtain sealing device of coal column gob side entry retaining and its application method |
Publications (2)
| Publication Number | Publication Date |
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| CN105351006A true CN105351006A (en) | 2016-02-24 |
| CN105351006B CN105351006B (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510939712.4A Active CN105351006B (en) | 2015-12-16 | 2015-12-16 | Without the soft curtain sealing device of coal column gob side entry retaining and its application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746863A (en) * | 2021-02-04 | 2021-05-04 | 太原理工大学 | Rapid closing device and method for mine roof cutting gob-side entry retaining goaf |
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| DE1115210B (en) * | 1958-01-09 | 1961-10-19 | Bochumer Eisen Heintzmann | Dam door for mining operations |
| CN202157815U (en) * | 2011-06-16 | 2012-03-07 | 李发庆 | Rock-gangway bomb-dug net-type soft waste rock blocking wall |
| CN203925586U (en) * | 2014-06-20 | 2014-11-05 | 山西吕梁离石金晖荣泰煤业有限公司 | The isolation structures of gob side entry retaining |
| CN204327140U (en) * | 2014-12-12 | 2015-05-13 | 四川省科建煤炭产业技术研究院有限公司 | A kind of gob side entry retaining gear cash device |
| CN205277494U (en) * | 2015-12-16 | 2016-06-01 | 山东科技大学 | No coal column gob entry curtain sealing device that softens |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1115210B (en) * | 1958-01-09 | 1961-10-19 | Bochumer Eisen Heintzmann | Dam door for mining operations |
| CN202157815U (en) * | 2011-06-16 | 2012-03-07 | 李发庆 | Rock-gangway bomb-dug net-type soft waste rock blocking wall |
| CN203925586U (en) * | 2014-06-20 | 2014-11-05 | 山西吕梁离石金晖荣泰煤业有限公司 | The isolation structures of gob side entry retaining |
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| CN112746863A (en) * | 2021-02-04 | 2021-05-04 | 太原理工大学 | Rapid closing device and method for mine roof cutting gob-side entry retaining goaf |
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| CN105351006B (en) | 2018-01-16 |
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