CN101372891A - Strip filling integral backstopping coal mining method - Google Patents
Strip filling integral backstopping coal mining method Download PDFInfo
- Publication number
- CN101372891A CN101372891A CNA2008100117414A CN200810011741A CN101372891A CN 101372891 A CN101372891 A CN 101372891A CN A2008100117414 A CNA2008100117414 A CN A2008100117414A CN 200810011741 A CN200810011741 A CN 200810011741A CN 101372891 A CN101372891 A CN 101372891A
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- Prior art keywords
- support
- coal
- filling
- roadside packing
- transporter
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- 239000003245 coal Substances 0.000 title claims abstract description 61
- 238000005065 mining Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000012856 packing Methods 0.000 claims description 51
- 239000000725 suspension Substances 0.000 claims description 22
- 238000009415 formwork Methods 0.000 claims description 16
- 239000006210 lotion Substances 0.000 claims description 11
- 239000011435 rock Substances 0.000 claims description 10
- 238000009416 shuttering Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 238000004062 sedimentation Methods 0.000 abstract description 6
- 239000003610 charcoal Substances 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 2
- 238000004064 recycling Methods 0.000 abstract 2
- 238000011084 recovery Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000153 supplemental effect Effects 0.000 description 3
- 239000010878 waste rock Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- 230000009184 walking Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D23/0481—Supports specially adapted for use in combination with the placing of filling-up materials
Abstract
A band filling stoping mining method effectively solves the problems in the prior stoping mining of a 'three-low' coal bed, such as the sedimentation and distortion of the earth surface, the low recycling rate of coal and charcoal resources, the existence of safety hazards, etc. The method comprises the following steps: a transporter and a coal mining machine are laid on the working face of the mining area; in the direction perpendicular to the direction of the transporter movement, a timbering device which is composed of a hydraulic bracket of the working face, a side molding board bracket for filling beside the lane and a back molding board bracket for filling beside the lane, and connected with the connecting head of the transporter is arranged; after the brackets are pushed along the working face, paste concrete is injected through a pipeline into a filling mold cavity enclosed by the brackets, so as to form a band-shaped filling wall which is supported between the top plate above the goaf and the bottom plate of the coal bed. By the method, safe and convenient mining operation is ensured; the recycling rate for coal and charcoal is increased; meanwhile, the sedimentation and distortion of the overlying strata of the coal bed and the earth surface can be controlled in a very small range of deformation permitted by a building, thereby minimizing the amount of gentle sedimentation of the earth surface, and protecting buildings and attachments on the earth surface.
Description
Technical field
The present invention relates to a kind of backstopping coal mining method of seam mining, the strip filling integral backstopping coal mining method of particularly a kind of being applicable to " three times " seam mining, can realize safe back production, and can reach the coal recovery rate same with existing fully-mechanized mining, simultaneously can with the settlement Control on the coal seam overlying rock and the face of land in the very low range that allows, guarantee the safety of face of land building and attachment.Belong to coal mining method field.
Background technology
At present China to overstock village and important building, road and bridge facility and the coal seam of water body underground (claiming " three times " usually) such as the lake coal-mining method of exploiting more limited, if do not take appropriate measures, rashly this type of coal seam is exploited, the slump of coal seam overlying rock and fracture will cause the serious sedimentation on the face of land and move, thus cause the village on ground and important building, road and bridge facility and water body in lake etc. destroyed; If under water, more may cause the coal seam permeable, serious security incident takes place in the down-hole, and the water body resource on the face of land also can be subjected to heavy damage.
Known exploitation method has three classes: first room and pillar mining, it is to be exploited into the pillars of a house shape of comparison rule by the exploitation coal body, by staying the mineral building studding established, section isolated coal pillar etc. to support overburden weight, and reach control roof strata destruction and collapse, reduce to adopt purpose to the influence of ground building.The coal recovery rate of room and pillar mining is often not as good as 40%, and supporting means shortcoming, and roof fall accident easily takes place, and is the method that is under an embargo and adopts under non-specific condition.It two is filling minings, and it is that the development and the expansion that stop the roof strata inbreak to destroy finally reach and slows down subsidence with material bashings such as spoil, loess, water sand, the purpose of protection ground building.As patent publication No. is CN1936271A " method of filling coal-steam-free extraction working surface goaf by coal mine waste rock ", disclose a kind of with coal mine waste rock by the way of filling-up mechanicallys such as transporter and belt to the goaf.These class methods are subjected to the limitation of material, equipment, technology, charges can't be closely knit be full of the goaf, and this method all can't be in operation under the supporting condition safely and effectively, so preventing to still have bigger limitation on the subsidence the equipment of goaf operation and personnel.It three is band exploitation and attached mode with waste filling, and it is the ribbon that the coal seam that will be exploited is divided into rule, adopts one; stay one; by reducing to exploit the absolute productive area in coal seam in the piece section, reduce the face of land and move and be out of shape the purpose of protection ground building and reach.As patent publication No. is that " cave filling coal-mining method ", the patent publication No. of CN1483921A is " utilizing spoil displacement village to press down the exploitation method of coal " of CN1952349A, " exploitation method of replacement of banded coal under building by waste rock " that patent publication No. is CN1963149A etc., and the method for announcement just belongs to this type of.The coal recovery rate of these class methods is low, has only about 30%-50%, though attached way with gangue refill has certain effect to slowing down surface settlement, extremely low and cost of winning increases aspects such as a lot, poor stability and considers to have lost more than gain with regard to some from resource recovery.Be in " building or structure press down the whole exploitation methods of coal big band cooperative type " of CN1410655A also just like patent publication No., what announce is that a kind of the jumping earlier adopted, again jumping is adopted the coal seam section that is stayed and carry out quick method of adopting by force simultaneously, it also is a kind of of band exploitation, though the rate of extraction of this method has had large increase, but the inhomogeneities of subsidence is still bigger, and the crucial later stage adopt by force the surface movement and deformation of stage under different regions and coal seam conditions be difficult to guaranteed, therefore, can the influence factor of effect of settling that reach expection more, has greater risk.
In sum, the home and abroad has not yet to see the corresponding report that " three times " coal seam is carried out the desirable exploitation method of high-recovery, highly efficient and productive comprehensive mechanization.
Summary of the invention
The purpose of this invention is to provide a kind of strip filling integral backstopping coal mining method; it has solved the ground settlement distortion that existing " three times " coal seam back production exists effectively; coal recovery rate is low; there are problems such as potential safety hazard; it has fully utilized ripe actual mining technology and common equipment; help the back production in " three times " coal seam; mining operations safety; easy to operate; when improving coal recovery rate; the sedimentation and deformation on the coal seam overlying rock and the face of land can be controlled at building allows in the very low range of distortion; realize that the mild deflection in the face of land is minimum, to reach the purpose of protection face of land building and attachment.
The object of the present invention is achieved like this: the technical essential of this method may further comprise the steps:
The exploiting field arrange send the haulage drift and the return aircourse of work plane and leave cut eye after, lay transporter and move back and forth the coal-winning machine of coal cutting at work plane, at the suspension device that is connected with transporter by connector with the perpendicular direction setting of transporter traffic direction along transporter;
Described suspension device comprises the working surface hydraulic support that has connector, the roadside packing side template support that has connector and the roadside packing rear pattern plate support that has connector; Wherein
At least arrange one group of described working surface hydraulic support along the mining direction of described work plane, cocurrent and parallel is provided with described roadside packing side template support and described roadside packing rear pattern plate support respectively in the both sides of described every group of working surface hydraulic support, and by described roadside packing rear pattern plate support with arrange that the described roadside packing side template support of its and arranged on left and right sides surrounds the filling die cavity;
Utilize and respectively pass oil cylinder in the support of described suspension device, pass each support self of described transporter and connected described suspension device, continue to advance also and mine along the mining direction of described work plane;
After each support of described suspension device advances along described stope, by pipeline cast lotion concrete in the described filling die cavity that each support of described suspension device surrounds, form and be supported on the top board of above goaf and the ribbon filling wall between the working seam base plate;
Utilize roof strata that described ribbon filling wall makes the goaf between the body of wall of the banded filling wall of adjacent strip until the rock stratum on the face of land, form the less wavy overlying rock of amplitude of variation and sink;
During the ribbon filling wall coagulation forming, roadside packing side template support in the described suspension device and roadside packing rear pattern plate support, and adjustable type hydraulic formwork does not move, but move again when the shifting formwork state until the lotion concrete setting that reaches ribbon filling wall, during this period, utilize the passing oil cylinder of each support of described suspension device to continue to pass transporter, keep coal mining.
When surrounding the filling die cavity by described roadside packing rear pattern plate support with the described roadside packing side template support of arranging its and arranged on left and right sides, the described roadside packing side template support that is positioned at described haulage drift or edge, described return aircourse adopts adjustable type hydraulic formwork or other support shuttering to substitute.
Because coal-mining method of the present invention has fully utilized ripe actual mining technology and transporter commonly used, coal-winning machine, equipment such as working surface hydraulic support, dispose the support apparatus of the maturation that the inventor used simultaneously, as notification number is " the roadside packing side template support " of CN200999614Y and " the roadside packing rear pattern plate support " that notification number is CN200999613Y, and newly-designed devices such as " adjustable type hydraulic formworks ", its mining operations safety, easy to operate, so can keep work plane to carry out the strip-type integral backstopping of mechanized continuously, when improving coal recovery rate, the goaf at rear is adopted the supporting and the filling means of science, guarantee alternate in entire working surface banded filling wall to be set, the sedimentation and deformation on the coal seam overlying rock and the face of land is controlled at building allows in the very low range of distortion.In utilizing above-mentioned suspension device support, respectively pass oil cylinder, pass transporter and support from after one's death along the mining direction of work plane, can in the filling die cavity that each support surrounds, pour into a mould the lotion concrete by pipeline, make it to form needed ribbon filling wall.Utilize this ribbon filling wall can make the rock stratum of the top board in the goaf between the neighboring walls, form the sinking basin of easing up gradually until the face of land.As long as the goaf between the neighboring walls and the width of filling wall are selected suitably; the overlying rock in the territory, entire working surface goaf and the sinking on the face of land will form a kind of wavy form; can under the face of land, disappear on a certain degree of depth eventually through stack; the face of land presents mild sinking; the movement and deformation amount reduces greatly, can reach the purpose of protection face of land building and attachment.Therefore, the present invention solved effectively ground settlement distortion, coal recovery rate that existing " three times " coal seam back production exists low, have problem such as potential safety hazard, help the back production in " three times " coal seam.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is the structural representation of a kind of stope of the present invention.
Fig. 2 is the structural representation of the working surface hydraulic support among Fig. 1.
Fig. 3 is the structural representation of the roadside packing side template support among Fig. 1.
Fig. 4 is the structural representation of the roadside packing rear pattern plate support among Fig. 1.
Fig. 5 is the structural representation of the adjustable type hydraulic formwork among Fig. 1.
Fig. 6 is the lateral view of Fig. 5.
Sequence number explanation among the figure: 1 working surface hydraulic support, 2 roadside packing side template supports, 3 roadside packing rear pattern plate supports, 4 transporters, 5 coal-winning machines, 6 connectors, 7 haulage drifts, 8 return aircoursies, 9 coal seams, 10 filling walls, 11 goafs, 12 adjustable type hydraulic formworks, 13 tractive hydraulic cylinders, 14 hydraulic vertical props, 15 back timbers, 16 pass hydraulic cylinder, 17 push rods, 18 back timbers, 19 hydraulic vertical props, 20 pass hydraulic cylinder, 21 push rods, 22 back timbers, 23 hydraulic vertical props, 24 pass hydraulic cylinder, 25 push rods, 26 supplemental support hydraulic cylinders, 27 straight support hydraulic cylinders, 28 connectors.
The specific embodiment
Describe concrete operations step of the present invention in detail according to Fig. 1～6.This strip filling integral backstopping coal mining method has fully utilized ripe actual mining technology and has reached equipment such as transporter 4 commonly used, coal-winning machine 5, working surface hydraulic support 1, dispose the support apparatus of the maturation that the inventor used at work plane simultaneously, as roadside packing side template support 2 (notification number CN200999614Y) and roadside packing rear pattern plate support 3 (notification number CN200999613Y), and device such as newly-designed adjustable type hydraulic formwork 12.A kind of specific implementation method of the present invention adopts following steps: as shown in Figure 1, at first the exploiting field arrange send the haulage drift 7 and the return aircourse 8 of work plane and leave cut eye after, lay transporter 4 and move back and forth the coal-winning machine 5 of coal cutting along transporter 4 at work plane.Then at the suspension device that is connected with transporter 4 by connector 6 with the perpendicular direction setting of transporter 4 traffic directions.This suspension device comprises the working surface hydraulic support that has connector 61 that the exploiting field work plane is commonly used and roadside packing side template support 2, roadside packing rear pattern plate support 3.Wherein working surface hydraulic support 1 (as shown in Figure 2) comprises base and by back timber 15 parts such as grade that quadric chain is connected with hydraulic vertical prop 14, the push rod of passing on hydraulic cylinder 16 and hinged its piston rod that has connector 6 17 is set in base.Roadside packing side template support 2 (as shown in Figure 3) comprises base and by back timber 18 parts such as grade that quadric chain is connected with hydraulic vertical prop 19, the push rod of passing on hydraulic cylinder 20 and hinged its piston rod that has connector 6 21 is set in base.Roadside packing rear pattern plate support 3 (as shown in Figure 4) comprises base and by back timber 22 parts such as grade that quadric chain is connected with hydraulic vertical prop 23, the push rod of passing on hydraulic cylinder 24 and hinged its piston rod that has connector 6 25 is set in base.
Each support of above-mentioned suspension device can be by positional alignment shown in Figure 1, promptly begins to install from the end in headentry road 7 and puts.Because filling wall 10 begins to stay from the edge in next-door neighbour tunnel, so can reduce after the advance of the face from the deflection of back until the top stratum.Wherein arrange one group of working surface hydraulic support 1 at least along the mining direction of work plane, the quantity of every group of working surface hydraulic support 1 is determined according to the goaf width of the band exploitation roof caving that allows.Cocurrent and parallel is provided with roadside packing side template support 2 and roadside packing rear pattern plate support 3 respectively in the both sides of every group of working surface hydraulic support 1, and by roadside packing rear pattern plate support 3 with arrange that the roadside packing side template support 2 of its and arranged on left and right sides surrounds the filling die cavity.The quantity of used roadside packing rear pattern plate support 3 should depend on that the body of wall width that need stay the filling wall of establishing 10 and ore deposit press factors such as size.When the roadside packing side template support 2 of the side that surrounds the filling die cavity was positioned at the edge of haulage drift 7 (or return aircourse 8), its roadside packing side template support 2 that is positioned at the edge of haulage drift 7 (or return aircourse 8) can adopt adjustable type hydraulic formwork 12 or other support shuttering support to substitute.When adopting adjustable type hydraulic formwork 12, it should be connected with roadside packing rear pattern plate support 3 by connector 28 hinged tractive hydraulic cylinders, and surround the filling die cavity by the roadside packing side template support 2 and the adjustable type hydraulic formwork 12 of roadside packing rear pattern plate support 3 and its and arranged on left and right sides of layout.
Adjustable type hydraulic formwork 12 (shown in Fig. 5～6) comprises the base that has tractive hydraulic cylinder 13 and assembles adjusts the part such as cope match-plate pattern, lower bolster of support by straight support hydraulic cylinder 27, diagonal brace hydraulic cylinder, supplemental support hydraulic cylinder 26 on it.According to the situation of adjustable type hydraulic formwork 12 roadway floors of living in, suitably adjust the diagonal brace hydraulic cylinder, base is fully contacted with roadway floor, and lower bolster and cope match-plate pattern are close to the side at filling wall 10.Handle straight support hydraulic cylinder 10, cope match-plate pattern is raise, until supporting to back.In filling lotion concrete process, note observing, because the concrete effect of lotion makes adjustable type hydraulic formwork 12 take place to slide to the direction away from body of wall, then handle supplemental support hydraulic cylinder 26 as finding, make it or be supported on the base, or be supported on the holder of other equipment in the tunnel.
The concrete operations step of strip filling integral backstopping coal mining method is as follows:
When mining beginning, utilize each hydraulic vertical prop 14,19,23 in working surface hydraulic support 1, roadside packing rear pattern plate support 3 and the roadside packing side template support 2 of suspension device to make corresponding back timber 15,18,22 support roof respectively, make each support 1,3,2 location.This moment, the push rod of each support was the state of stretching out, and is ready for coal cutting, also enriching the lotion concrete under this state in the filling die cavity that is surrounded by each falsework.
After treating that coal-winning machine 5 has cut the first cutter coal along conveyer 4 walkings, handle hydraulic vertical prop 14 retractions in each working surface hydraulic support 1 successively, make back timber 15 break away from roof respectively slightly, start each working surface hydraulic support 1 immediately and be arranged on passing hydraulic cylinder 16 in its base, drive push rod 17 and regain, by connector 6 each working surface hydraulic support 1 of drive of being connected with conveyer 4 to conveyer 4 step pitch of advancing.Then, the column 14 of manipulation working surface hydraulic support 1 makes back timber 15 support roof, handles and passes hydraulic cylinder 16, drives push rod 17 transporter is released a step pitch, cuts off a cutter coal for coal-winning machine and gets ready.Meanwhile, handle the passing hydraulic cylinder 20 and 24 of roadside packing side template support 2 and roadside packing rear pattern plate support 3, make push rod 21 and 25 stretch out a step pitch, cut off a cutter coal for coal-winning machine and get ready.During this period, it is motionless that each falsework keeps, and waits for that the lotion concrete setting forms the ribbon filling wall 10 that is supported between goaf top plate and the seat earth in the filling die cavity.
After treating that coal-winning machine 5 has cut the second cutter coal along conveyer 4 walkings, handle hydraulic vertical prop 14 retractions in each working surface hydraulic support 1 successively, make back timber 15 break away from roof respectively slightly, start each working surface hydraulic support 1 immediately and be arranged on passing hydraulic cylinder 16 in its base, drive push rod 17 and regain, by connector 6 each working surface hydraulic support 1 of drive of being connected with conveyer 4 to conveyer 4 step pitch of advancing.Then, the column 14 of manipulation working surface hydraulic support 1 makes back timber 15 support roof, handles and passes hydraulic cylinder 16, drives push rod 17 transporter is released a step pitch, cuts off a cutter coal for coal-winning machine and gets ready.At this moment, when treating that the lotion concrete setting is shaped substantially in the filling die cavity, handle the column 19 and 23 of roadside packing side template support 2 and roadside packing rear pattern plate support 3, make its back timber 18 and 22 break away from top board slightly, and handle and pass hydraulic cylinder 20 and 24, push rod 21 and 25 is regained, support 2 and 3 is drawn to transporter lean on; Handle column 19 and 23, make its back timber 18 and 22 support roof, handle again and pass hydraulic cylinder 20 and 24, make push rod 21 and 25 stretch out a layout, for next one coal mining circulates ready.
So circulation constantly repeats above steps and can finish the safe filling and the supporting operation of strip filling again continuously when finishing the integral backstopping coal mining activity continuously.So just can the goaf 11 of the concrete filling wall 10 of filling lotion with working surface hydraulic support 1 rear be separated by roadside packing side template support 2.So arrange suspension device, the coal seam 9 that just can realize the entire working surface zone had formed by the concrete filling wall 10 ribbon Subsidence Area alternate with the goaf after adopting.
Claims (2)
1. strip filling integral backstopping coal mining method is characterized in that may further comprise the steps:
The exploiting field arrange send the haulage drift and the return aircourse of work plane and leave cut eye after, lay transporter and move back and forth the coal-winning machine of coal cutting at work plane, at the suspension device that is connected with transporter by connector with the perpendicular direction setting of transporter traffic direction along transporter;
Described suspension device comprises the working surface hydraulic support that has connector, the roadside packing side template support that has connector and the roadside packing rear pattern plate support that has connector; Wherein
At least arrange one group of described working surface hydraulic support along the mining direction of described work plane, cocurrent and parallel is provided with described roadside packing side template support and described roadside packing rear pattern plate support respectively in the both sides of described every group of working surface hydraulic support, and by described roadside packing rear pattern plate support with arrange that the described roadside packing side template support of its and arranged on left and right sides surrounds the filling die cavity;
Utilize and respectively pass oil cylinder in the support of described suspension device, pass each support of described transporter and connected described suspension device, continue to advance also and mine along the mining direction of described work plane;
After each support of described suspension device advances along described stope, by pipeline cast lotion concrete in the described filling die cavity that each support of described suspension device surrounds, form and be supported on the top board of above goaf and the ribbon filling wall between the working seam base plate;
Utilize roof strata that described ribbon filling wall makes the goaf between the body of wall of the banded filling wall of adjacent strip until the rock stratum on the face of land, form the less wavy overlying rock of amplitude of variation and sink;
During the ribbon filling wall solidification forming, roadside packing side template support in the described suspension device and roadside packing rear pattern plate support, and adjustable type hydraulic formwork does not move, but move again when the shifting formwork state until the lotion concrete setting that reaches ribbon filling wall, during this period, utilize the passing oil cylinder of each support of described suspension device to continue to pass transporter, keep coal mining.
2. strip filling integral backstopping coal mining method according to claim 1, it is characterized in that: when surrounding the filling die cavity by described roadside packing rear pattern plate support with the described roadside packing side template support of arranging its and arranged on left and right sides, the described roadside packing side template support that is positioned at described haulage drift or edge, described return aircourse adopts adjustable type hydraulic formwork or other support shuttering to substitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100117414A CN101372891B (en) | 2008-06-10 | 2008-06-10 | Strip filling integral backstopping coal mining method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100117414A CN101372891B (en) | 2008-06-10 | 2008-06-10 | Strip filling integral backstopping coal mining method |
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| Publication Number | Publication Date |
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| CN101372891A true CN101372891A (en) | 2009-02-25 |
| CN101372891B CN101372891B (en) | 2010-08-11 |
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