CN117328919A - Solid waste cementing compact filling exploitation hydraulic support - Google Patents
Solid waste cementing compact filling exploitation hydraulic support Download PDFInfo
- Publication number
- CN117328919A CN117328919A CN202311224266.XA CN202311224266A CN117328919A CN 117328919 A CN117328919 A CN 117328919A CN 202311224266 A CN202311224266 A CN 202311224266A CN 117328919 A CN117328919 A CN 117328919A
- Authority
- CN
- China
- Prior art keywords
- filling
- spiral pushing
- cementing
- vertical plate
- spiral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011049 filling Methods 0.000 title claims abstract description 269
- 239000002910 solid waste Substances 0.000 title claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 76
- 238000002955 isolation Methods 0.000 claims abstract description 59
- 239000007787 solid Substances 0.000 claims abstract description 41
- 238000005065 mining Methods 0.000 claims abstract description 39
- 239000013307 optical fiber Substances 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 10
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims 2
- 239000002245 particle Substances 0.000 abstract description 11
- 230000007774 longterm Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 238000003825 pressing Methods 0.000 description 10
- 239000003245 coal Substances 0.000 description 8
- 239000011435 rock Substances 0.000 description 7
- 238000012856 packing Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- -1 gangue Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0481—Supports specially adapted for use in combination with the placing of filling-up materials
-
- 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
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
-
- 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
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
-
- 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
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
- E21F15/10—Hydraulic or pneumatic filling-up machines
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a solid waste cementing compact filling mining hydraulic support, which comprises a support body part, a solid filling aggregate conveying part, a composite filling part and a filling feedback part, wherein the support body part is provided with a plurality of support bodies; the composite filling part comprises a spiral pushing device and a cementing slurry applying device, the spiral pushing device is arranged on the base and comprises a sliding seat, a spiral pushing component and a filling isolation vertical plate, and the cementing slurry applying device comprises a cementing slurry conveying pipeline and a filling area grouting pipe; the filling feedback part comprises an optical fiber stress sensor and a liquid level sensor. According to the invention, the solid filling aggregate is continuously filled and extruded into the goaf through the spiral pushing device to improve the filling compactness of the solid filling aggregate, and then the cementing slurry is applied to the solid filling aggregate filling body which is preliminarily extruded and compacted through the cementing slurry applying device to fill gaps among solid filling aggregate particles, so that the stable high-compactness filling body can be obtained, and the long-term slow deformation of the earth surface can be effectively controlled on the premise of controlling the initial deformation of the filling body.
Description
Technical Field
The invention relates to a hydraulic support, in particular to a solid waste cementing compact filling mining hydraulic support, and belongs to the technical field of mining.
Background
The filling mining is to fill the abandoned filling material into the working face goaf to control the roof to fall, the disturbance to the rock stratum is small after filling, and the rock stratum movement and the ground surface subsidence can be effectively controlled, so that the problems of coal mining environment and the next three-step coal mining are solved, and the method is an important way for improving the coal resource mining rate, improving the mining area environment and realizing the efficient green mining of the coal industry.
With the development of underground filling mining technology of coal mines, the problems of ground subsidence control and solid waste ground emission are partially solved, the situations of ground subsidence damage environment and 'three-lower' rigid resource waste are alleviated, but the underground coal face of places such as strategic pipelines, important electric power facilities, high-rise buildings and the like is provided with higher requirements for overlying strata deformation of the filling mining face and long-term ground subsidence control, and the filling compactness is improved and long-term deformation of a filling body is limited.
The filling and mining hydraulic support is an important supporting device used in underground coal mine filling and mining, and is mainly used for supporting a top plate, isolating a goaf and protecting the operation safety of underground personnel, and meanwhile, a relatively closed filling area can be formed behind the support, so that the filling and mining can be realized. The existing underground coal mine working face filling and mining technology mainly comprises a solid filling method for filling by using solid wastes such as gangue, waste rocks and the like and a grouting filling method for filling by using pasty materials such as paste, high-water materials and the like according to filling materials and process classifications.
The filling and mining hydraulic support used by the solid filling method generally comprises a scraper conveyor suspended below a top beam and a pushing and tamping mechanism which is arranged in a telescopic manner behind a base of the filling and mining hydraulic support, solid wastes are conveyed and conveyed into a goaf through the scraper conveyor, and the solid wastes in the goaf are compacted by controlling the telescopic action of the pushing and tamping mechanism. On the one hand, the pushing and tamping mechanism can only apply discontinuous extrusion force to the filling body, so that solid particles obviously fall back after the pushing and tamping mechanism retracts, and the compactness of the filling body cannot be effectively controlled; on the other hand, in the application process of the solid filling method, because the filling body solid particles are piled up to form a bearing framework structure, and larger gaps exist among the solid particles, the gaps among the solid particles can be gradually closed to release deformation spaces under the long-term action of the overburden load, and the long-term slow deformation phenomenon of the earth surface can be caused.
The filling mining hydraulic support used in the grouting filling method generally comprises an upper retaining wall which is hung on a top beam, a lower retaining wall which is fixedly arranged at the rear part of a base, and a slurry conveying pipe which is hung under the top beam, wherein a working face and a goaf are isolated through the upper retaining wall and the lower retaining wall, and filling slurry is conveyed into the goaf through the slurry conveying pipe. On one hand, the problems of sinking and bleeding of the filling slurry exist in filling by using the filling slurry, namely, the volume of the filling body formed after the filling slurry is dehydrated and condensed is correspondingly reduced, and the top connection rate of the filling body is low; on the other hand, the initial setting time and the initial setting strength of the filling slurry material have important influence on the control effect of the filling mining rock stratum, the goaf roof is sunk in time when the initial setting strength of the filling slurry material is low, the advancing speed of the working face is greatly influenced by the initial setting time, the efficient production of the working face is limited, and if the filling slurry material capable of being quickly set is adopted, the filling cost is too high and the filling is uneconomical.
If prefabricated gangue aggregate concrete is adopted for goaf filling, although the problem of deformation of particle gaps of solid filling can be avoided, a pipeline conveying mode is adopted, however, dense filling materials with high coarse aggregate content and high mass concentration have extremely high abrasion to conveying pipelines during long-distance conveying, and the pipeline conveying mode has high energy consumption and poor economical efficiency.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the solid waste cementing compact filling mining hydraulic support, which can enable the solid filling aggregate filling body in the goaf to form a high-strength framework supporting structure, realize goaf filling with high compactness on the premise of controlling initial deformation of the filling body, and further effectively control long-term slow deformation of the earth surface.
In order to achieve the purpose, the solid waste cementing compact filling mining hydraulic support comprises a support body part, a solid filling aggregate conveying part, a composite filling part and a filling feedback part;
the frame body part comprises a top beam, a stand column, a connecting rod mechanism and a base, and the top beam is connected with the base through the stand column and the connecting rod mechanism in a mounting way;
the composite filling part comprises a spiral pushing device and a cementing slurry applying device;
the spiral pushing device is arranged on the base and comprises a sliding seat, a spiral pushing assembly and a filling isolation vertical plate; the sliding seat is arranged on the base in a sliding fit manner through a sliding guide mechanism arranged along the front-back direction, and is connected with a filling counterforce seat fixedly arranged on the base through a sliding control hydraulic cylinder; the spiral pushing and pressing assembly comprises a spiral pushing and pressing power component, a spiral conveying main shaft and a spiral pushing and pressing sleeve, wherein the spiral conveying main shaft comprising spiral pushing and pressing blades extending along the radial direction is in transmission connection with the spiral pushing and pressing power component, the spiral pushing and pressing sleeve matched with the spiral pushing and pressing blades is sleeved and installed outside the spiral conveying main shaft, the spiral pushing and pressing sleeve with a sealed front end and an open rear end is fixedly installed and connected with the sliding seat, and a filling feed port communicated with the inner cavity of the spiral pushing and pressing sleeve is further arranged on the spiral pushing and pressing sleeve; the vertical filling isolation vertical plate is provided with a filling port correspondingly matched with the spiral pushing sleeve, the filling isolation vertical plate is fixedly connected with the rear end of the spiral pushing sleeve in a sealing manner, the height and the width of the filling isolation vertical plate are respectively matched with the supporting height and the width of the frame body part, and the edge of the outline of the filling isolation vertical plate is fixedly provided with a closed air bag comprising a filling and air discharging mechanism;
the cementing slurry applying device comprises a cementing slurry conveying pipeline and a filling area grouting pipe; the filling area grouting pipe is of a flower pipe structure, and the filling area grouting pipe which is extended backward is fixedly arranged on the filling isolation vertical plate; the input end of the cementing slurry conveying pipeline is connected with the cementing slurry pumping mechanism, and the output end of the cementing slurry conveying pipeline is connected with the grouting pipe of the filling area in a sealing installation manner;
the solid filling aggregate conveying part comprises a feeding conveying device which is obliquely arranged, the feeding conveying device comprises a feeding hole at the low end and a discharging hole at the high end, and the discharging hole is arranged corresponding to the filling feeding hole;
the filling feedback part comprises an optical fiber stress sensor for sensing filling pressure of a filling area and a liquid level sensor for sensing application amount of cementing slurry, the optical fiber stress sensor is wound on an optical fiber paying-off roller positioned on the base, and the liquid level sensor is arranged on the filling isolation vertical plate.
As one embodiment of the present invention, the length dimension of the screw spindle in the front-rear direction is larger than the length dimension of the screw pushing sleeve in the front-rear direction.
As another embodiment of the present invention, the length dimension of the screw spindle in the front-rear direction is matched with the length dimension of the screw pushing sleeve in the front-rear direction.
As a further improvement of the invention, the filling isolation vertical plate is also fixedly provided with a vibrating rod comprising a vibrating drive mechanism, and the vibrating rod extends to the rear.
As a further improvement of the invention, the vibrating rod is positioned at the bottom of the filling isolation vertical plate, and the filling area grouting pipe is positioned at the top of the filling isolation vertical plate.
As a further improvement scheme of the invention, the filling counterforce seat is also provided with a synchronous pushing hydraulic cylinder which is consistent with the expansion direction of the sliding control hydraulic cylinder, and the expansion end of the synchronous pushing hydraulic cylinder is connected with the spiral pushing sleeve or the spiral pushing power component.
As a further improvement scheme of the invention, a post-frame cutting device is arranged at the rear end of the base corresponding to the position below the optical fiber paying-off roller, the post-frame cutting device comprises a plowshare which is bent to the front lower side and is in a hook shape, the plowshare is hooked into the bottom plate, and an optical fiber stress sensor traction guide structure is arranged on the plowshare, and the optical fiber stress sensor passes through the optical fiber stress sensor traction guide structure.
As a further improvement of the invention, the input end of the cementing slurry conveying pipeline is connected with the cementing slurry pumping mechanism through a tee joint control joint, and the other passage of the tee joint control joint is connected with the water injection mechanism.
As a further improvement scheme of the invention, the bottom of the filling isolation vertical plate is provided with a water outlet which can be opened and closed, and the water outlet is provided with a permeable and impermeable selectively permeable membrane.
As a further improvement of the invention, the top of the filling isolation vertical plate is provided with an openable and closable air outlet.
Compared with the prior art, the hydraulic support for solid waste cemented compact filling mining carries out composite filling operation on a goaf through the spiral pushing device and the cementing slurry applying device, namely, the solid filling aggregate is continuously extruded into the goaf through the spiral pushing device to improve the filling compactness of the solid filling aggregate, the solid filling aggregate filler forms a high-strength framework supporting structure capable of resisting initial deformation of surrounding rock due to mining, cementing slurry is applied to the extruded compact solid filling aggregate filler through the cementing slurry applying device, gaps among solid filling aggregate particles are filled with the cementing slurry, and then the stable high-strength filler capable of effectively limiting long-term deformation of the earth surface is obtained; the vertical pressure of the filling area is fed back in real time through the optical fiber stress sensor to control the filling amount of the solid filling aggregate, and the application amount of the cementing slurry is controlled through the feedback of the liquid level sensor, so that the accurate control of the filling amount can be realized; the stepping frame moving can be realized through the reaction force of the filling isolation vertical plate on one hand by controlling the expansion and contraction of the sliding control hydraulic cylinder, and on the other hand, the filling isolation vertical plate can further prop up the filling body to increase the supporting strength of the filling body, so that the long-term slow deformation of the ground surface can be effectively controlled on the premise of controlling the initial deformation of the filling body.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic three-dimensional view of the helical push sleeve and the packing isolation riser of the present invention;
FIG. 3 is a schematic view of the structure of the present invention in preparation for filling;
FIG. 4 is a schematic view of the structure of the solid-filled aggregate of the present invention during a filling operation;
FIG. 5 is a schematic view of the construction of the present invention during a cementing slurry application operation;
fig. 6 is a schematic structural view of the invention in the case of a frame-moving operation.
In the figure: 1. front top beam, 2, middle top beam, 3, back top beam, 4, front upright post, 5, middle upright post, 6, back upright post, 7, connecting rod mechanism, 8, base, 9, filling reaction seat, 10, synchronous pushing hydraulic cylinder, 11, feeding gesture control device, 12, sliding control hydraulic cylinder, 13, spiral pushing power component, 14, spiral pushing sleeve, 15, filling feed inlet, 16, spiral pushing blade, 17, cementing slurry conveying pipeline, 18, filling area grouting pipe, 19, exhaust port, 20, vibrating rod, 21, water outlet, 22, slide, 23, sliding guide mechanism, 24, post frame cutting device, 25, feeding conveying device, 26, feed inlet, 27, discharge outlet, 28, filling isolation vertical plate, 29, sealing air bag, 30, optical fiber paying-off roller, 31 and liquid level sensor.
Detailed Description
The present invention will be further described with reference to the accompanying drawings (hereinafter, the description will be made with the left direction of fig. 1 as the front).
The hydraulic support for solid waste cementing compact filling exploitation comprises a support body part, a solid filling aggregate conveying part, a composite filling part and a filling feedback part.
As shown in fig. 1, the frame body part comprises a top beam, a stand column, a connecting rod mechanism 7 and a base 8, wherein the top beam at least comprises a middle top beam 2, the middle top beam 2 is connected with the base 8 through the stand column and the connecting rod mechanism 7, the top beam can also comprise a front top beam 1 and a rear top beam 3 which are connected with the middle top beam 2 in an end-to-end hinged mode, the stand column at least comprises a front stand column 4 and a rear stand column 6, the stand column can also comprise a middle stand column 5, and the connecting rod mechanism 7 can be a four-bar mechanism comprising an oblique beam, a front connecting rod and a rear connecting rod.
The composite filling part comprises a spiral pushing device and a cementing slurry applying device;
the spiral pushing device is arranged on the base 8 and comprises a sliding seat 22, a spiral pushing component and a filling isolation vertical plate 28; the sliding seat 22 is installed on the base 8 in a sliding fit manner through a sliding guide mechanism 23 arranged along the front-rear direction, the sliding seat 22 is connected with a filling counter-force seat 9 fixedly arranged on the base 8 through a sliding control hydraulic cylinder 12, and the sliding guide mechanism 23 can be of a guide groove structure matched with the sliding seat 22 or of other linear reciprocating guide structures such as a guide sliding rail structure matched with the sliding seat 22; the spiral pushing assembly comprises a spiral pushing power component 13, a spiral conveying main shaft and a spiral pushing sleeve 14, the spiral conveying main shaft comprising spiral pushing blades 16 extending along the radial direction is in transmission connection with the spiral pushing power component 13, the spiral pushing sleeve 14 matched with the spiral pushing blades 16 is sleeved outside the spiral conveying main shaft, the spiral pushing sleeve 14 is of a structure with a sealed front end and an open rear end, the spiral pushing sleeve 14 is fixedly connected with a sliding seat 22, a filling feed port 15 penetrating through the inner cavity of the spiral pushing sleeve 14 is further arranged on the spiral pushing sleeve 14, the spiral pushing power component 13 can be a driving motor or a driving hydraulic motor, preferably, the driving hydraulic motor can be used for realizing the rotation of the spiral conveying main shaft along the central axis and further realizing the material conveying to the rear direction by controlling the action of the spiral pushing power component 13; as shown in fig. 2, a filling opening correspondingly matched with the spiral pushing sleeve 14 is formed in the filling isolation vertical plate 28 which is vertically arranged, the filling isolation vertical plate 28 is fixedly and hermetically connected with the rear end of the spiral pushing sleeve 14, the height and width dimensions of the filling isolation vertical plate 28 are respectively matched with the supporting height and width dimensions of the frame body part, a closed air bag 29 with an integral structure is fixedly arranged at the outline edge position of the filling isolation vertical plate 28, the closed air bag 29 comprises a filling and air discharging mechanism, and the sliding seat 22 can drive the spiral pushing assembly and the filling isolation vertical plate 28 to integrally move along the front-back direction by controlling the telescopic action of the sliding control hydraulic cylinder 12;
the cementing slurry application device comprises a cementing slurry conveying pipeline 17 and a filling area grouting pipe 18; the filling area grouting pipe 18 is a flower pipe structure comprising a plurality of through holes communicated with the inner cavity of the filling area grouting pipe, the filling area grouting pipe 18 which is extended backward is fixedly arranged on the filling isolation vertical plate 28, and the filling area grouting pipe 18 is positioned at the top of the filling isolation vertical plate 28; the input end of the cementing slurry conveying pipeline 17 is connected with a cementing slurry pumping mechanism, the output end of the cementing slurry conveying pipeline 17 is connected with a filling area grouting pipe 18 in a sealing installation mode, the cementing slurry conveying pipeline 17 can be hung on a top beam for conveniently arranging the cementing slurry conveying pipeline 17, the cementing slurry conveying pipeline 17 is connected with the filling area grouting pipe 18 in a mounting mode, and the front end of the filling area grouting pipe 18 can be connected in a penetrating mode and fixedly installed on a filling isolation vertical plate 28 in a sealing mode.
The solid filling aggregate conveying part comprises a feeding conveying device 25 which is obliquely arranged, the feeding conveying device 25 comprises a feeding hole 26 at the low end and a discharging hole 27 at the high end, the discharging hole 27 is arranged corresponding to the filling feeding hole 15, the feeding conveying device 25 can be of a spiral conveying structure, a scraping plate conveying structure or a belt conveying structure, the feeding conveying device 25 can be hung on a top beam, and the feeding posture control device 11 capable of controlling the pitching and swinging angles of the feeding conveying device 25 can be arranged on the filling counter-force seat 9 as shown in fig. 1.
The filling feedback part comprises an optical fiber stress sensor for sensing the filling pressure of the filling area and a liquid level sensor 31 for sensing the application amount of the cementing slurry, wherein the optical fiber stress sensor is wound on an optical fiber paying-off roller 30 positioned on the base 8, and the liquid level sensor 31 is arranged on the filling isolation vertical plate 28 as shown in fig. 2.
When the solid waste cemented compact filling and mining hydraulic support is used for filling and mining, the roadway type filling and mining is taken as an example, and the method specifically comprises the following steps of:
filling preparation: when the initial state of positioning and supporting the solid waste cementing compact filling mining hydraulic support is shown in fig. 3, the upright posts are lifted to prop the top beam against the top plate, the closed air bags 29 are in an uninflated and shrunken state, at the moment, a moving gap is reserved between the filling isolation vertical plate 28 and surrounding rock, the sliding control hydraulic cylinder 12 is controlled to retract, the sliding seat 22 drives the spiral pushing component and the filling isolation vertical plate 28 to integrally move to a set position, the front end face of the filling isolation vertical plate 28 can be in butt joint with the rear end of the top beam, then the optical fiber stress sensor is discharged from the optical fiber paying-off roller 30, and the end part of the optical fiber stress sensor is pulled out backward and passes through the gap between the filling isolation vertical plate 28 and the bottom plate to be fixed on the bottom plate of a filling area;
filling operation of solid filling aggregate: as shown in fig. 4, the high-pressure gas is filled into the closed air bag 29 through the air charging and discharging mechanism, the closed air bag 29 is inflated to realize a closed isolation filling area, then the feeding conveying device 25 is started to convey solid filling aggregate into the spiral pushing sleeve 14 through the filling feed inlet 15, meanwhile, the spiral pushing power component 13 is started to enable the spiral conveying main shaft to positively rotate to carry out material conveying to the rear, and the solid filling aggregate is pushed into the filling area through the filling opening of the filling isolation vertical plate 28 under the continuous spiral pushing action of the spiral pushing blade 16 and gradually extruded and compacted; the optical fiber stress sensor feeds back the vertical pressure of the filling area in real time, when the vertical pressure of the filling area generated by extrusion of the solid filling aggregate particles reaches a set threshold value, the feeding conveying device 25 and the spiral pushing power component 13 are controlled to be closed, the filling operation of the solid filling aggregate is completed, and the filling feed inlet 15 can be closed at the moment;
cementing slurry application: as shown in fig. 5, the slip control hydraulic cylinder 12 is controlled to extend, the hydraulic pressure value reaches a set value and is maintained, the filling isolation vertical plate 28 is used for jacking up the solid filling aggregate filling body in the filling area, the filling body can form a high-strength framework supporting structure capable of resisting initial deformation of surrounding rock due to mining, then the cementing slurry pumping mechanism is started to pump cementing slurry into the filling area grouting pipe 18 through the cementing slurry conveying pipeline 17, the liquid level sensor 31 feeds back the injection liquid level of the cementing slurry in real time, when the liquid level sensor 31 feeds back full injection, the cementing slurry pumping mechanism is controlled to be closed, the cementing slurry applying operation is completed, the cementing slurry can fill gaps among solid filling aggregate particles and bond the solid filling aggregate particles together, and the long-term deformation of the earth surface can be effectively limited;
and (3) frame moving operation: after the slip control hydraulic cylinder 12 is controlled to a set time, the cementing slurry does not flow any more to cause cementing and shaping of the solid filling aggregate filling body, firstly, the upright post is controlled to descend, the top beam is separated from the top plate, and then the slip control hydraulic cylinder 12 is controlled to extend completely, as shown in fig. 6, the base 8 drives the whole frame body part to move forwards by one step distance under the pushing action of the slip control hydraulic cylinder 12, and the optical fiber paying-off roller 30 pays out the optical fiber stress sensor while the whole frame body part moves forwards to realize automatic laying of the optical fiber stress sensor; after the forward movement is completed by one step distance, the upright post is controlled to lift to position and support the top plate against which the top beam is propped, then the air charging and discharging mechanism is controlled to discharge air from the closed air bag 29, the sliding seat 22 is controlled to retract and reset the sliding control hydraulic cylinder 12, the spiral pushing component and the filling isolation vertical plate 28 are driven to integrally move forward to a set position for resetting, the filling isolation vertical plate 28 is separated from the filling body, a new filling area is formed between the filling isolation vertical plate 28 and the filling body as shown in fig. 1, and the frame moving operation is completed;
by such pushing, the filling operation of the solid filling aggregate, the application operation of the cementing slurry and the frame moving operation are repeated. After each frame moving operation, even if the position of the grouting pipe 18 corresponding to the filling opening and the filling area of the filling isolation vertical plate 28 on the filling body is partially damaged due to the forward movement of the filling isolation vertical plate 28, the partial damaged position of the filling body formed by the previous filling operation can be filled and repaired when the new filling space is filled subsequently, so that a continuous, stable and high-strength integral filling body is formed.
After the cementing slurry application operation is completed, in order to avoid the solidification phenomenon of the cementing slurry in the cementing slurry conveying pipeline 17 and the filling area grouting pipe 18 from influencing the subsequent cementing slurry application operation, as a further improvement scheme of the invention, the input end of the cementing slurry conveying pipeline 17 is connected with a cementing slurry pumping mechanism through a three-way control joint, and the other passage of the three-way control joint is connected with a water injection mechanism. After the cementing slurry application operation is completed, the tee control joint can be controlled to enable the water injection mechanism to be communicated with the cementing slurry conveying pipeline 17, and clean water is injected into the grouting pipe 18 of the filling area through the cementing slurry conveying pipeline 17 for pipeline flushing. In order to facilitate the discharge of the washing water of the washing pipeline, a water outlet 21 which can be opened and closed is arranged at the bottom of the filling isolation vertical plate 28, a permeable and impermeable selective permeable membrane is arranged on the water outlet 21, the water outlet 21 is closed when cementing slurry is applied, the water outlet 21 is opened when the pipeline is washed, and the washing water of the washing pipeline can be discharged through the water outlet 21 and filtered and then discharged into a roadway drainage ditch.
In order to facilitate the exhaust during the cementing slurry application operation, as a further improvement of the present invention, as shown in fig. 1 and 2, an openable and closable exhaust port 19 may be provided at the top of the filling isolation vertical plate 28, and a permeable and impermeable selectively permeable membrane may be provided on the exhaust port 19, so that the exhaust port 19 is opened during the cementing slurry application operation and the flushing of the pipeline, and the exhaust port 19 is closed when the liquid level sensor 31 feeds back full.
As an embodiment of the screw spindle of the present invention, as shown in fig. 1, the length dimension of the screw spindle in the front-rear direction is larger than the length dimension of the screw pushing sleeve 14 in the front-rear direction, i.e., the rear end of the screw spindle protrudes outside the screw pushing sleeve 14. When the frame moving operation controls the filling isolation vertical plate 28 to move forward, the sliding control hydraulic cylinder 12 is controlled to retract, and the spiral pushing power component 13 is controlled to enable the spiral conveying main shaft to rotate reversely, so that the rear end of the spiral conveying main shaft can reversely unscrew and withdraw the glued filling body, and the degree of local damage of the filling body caused by the forward movement of the filling isolation vertical plate 28 can be reduced to the greatest extent.
As another embodiment of the screw spindle of the present invention, the length dimension of the screw spindle in the front-rear direction is matched with the length dimension of the screw pushing sleeve 14 in the front-rear direction, i.e., the screw spindle is entirely located within the screw pushing sleeve 14. When the frame moving operation controls the filling isolation vertical plate 28 to move forward, the sliding control hydraulic cylinder 12 can be directly controlled to fully retract without controlling the spiral pushing power component 13 to reversely rotate the spiral conveying main shaft, or the spiral pushing power component 13 is controlled to reversely rotate the spiral conveying main shaft to separate from the cemented filling body while controlling the sliding control hydraulic cylinder 12 to retract; the screw pushing power component 13 can be controlled to rotate the screw conveying main shaft forward while the sliding control hydraulic cylinder 12 is controlled to retract, so that the solid filling aggregate in the screw pushing sleeve 14 can be pushed backwards to squeeze the cemented filling body, and further, the auxiliary pushing force for moving the frame can be provided.
In order to increase the packing compactness of the solid packing aggregate and facilitate the application of the cementing slurry, as a further improvement of the present invention, as shown in fig. 1 and 2, a vibrating rod 20 including a vibration driving mechanism is further fixedly provided on the packing isolation vertical plate 28, and the vibrating rod 20 is extended backward, and the vibrating rod 20 may be provided in a plurality of pieces. In the process of filling the solid filling aggregate, the tamping can be performed by controlling the vibrating rod 20 to generate excitation, and in the process of applying the cementing slurry, the cementing slurry can be promoted to downwards diffuse and fill gaps among the solid filling aggregate particles by controlling the vibrating rod 20 to generate excitation.
In order to realize the stability of the whole spiral pushing assembly and the whole filling isolation vertical plate 28 moving along the front-back direction and avoid unbalanced load, as shown in fig. 1, as a further improvement scheme of the invention, a synchronous pushing hydraulic cylinder 10 consistent with the extending and retracting direction of the sliding control hydraulic cylinder 12 is also arranged on the filling counter-force seat 9, and the extending and retracting end of the synchronous pushing hydraulic cylinder 10 is connected with the spiral pushing sleeve 14 or the spiral pushing power component 13, and the synchronous pushing hydraulic cylinder 10 can be arranged into a plurality of parts with respect to the geometric symmetry of the spiral pushing sleeve 14. The expansion and contraction actions of the sliding control hydraulic cylinder 12 are controlled, and simultaneously, the expansion and contraction of the synchronous pushing hydraulic cylinder 10 is synchronously controlled, so that the stability of the whole spiral pushing component and the filling isolation vertical plate 28 moving along the front and back direction can be realized, and unbalanced load is avoided.
In order to facilitate the laying of the optical fiber stress sensor and avoid the damage of the optical fiber stress sensor in the laying process to the maximum extent, as a further improvement scheme of the invention, as shown in fig. 1, a post-frame slitting device 24 is arranged at the rear end of the base 8 corresponding to the position below the optical fiber paying-off roller 30, the post-frame slitting device 24 comprises a plowshare which is bent forward and downward to form a hook shape, the plowshare is hooked into a bottom plate, and an optical fiber stress sensor traction guide structure is arranged on the plowshare, and the optical fiber stress sensor passes through the optical fiber stress sensor traction guide structure. When the frame is moved, the base 8 moves forwards by one step distance, the rear frame slitting device 24 can slit a groove on the bottom plate through the plow head, and the optical fiber stress sensor is paved in the groove through the traction guiding structure of the optical fiber stress sensor.
The solid waste cemented compact filling mining hydraulic support carries out composite filling operation on the goaf through the spiral pushing device and the cementing slurry applying device, can realize goaf filling with high compactness on the premise that a filling body in the goaf is continuously extruded to construct a high-strength framework supporting structure to control initial deformation of the filling body, and can obtain a stable high-strength filling body capable of effectively limiting long-term deformation of the earth surface.
Claims (10)
1. The solid waste cementing compact filling mining hydraulic support comprises a support body part, wherein the support body part comprises a top beam, a stand column, a connecting rod mechanism (7) and a base (8), and the top beam is connected with the base (8) in an installation manner through the stand column and the connecting rod mechanism (7); the hydraulic support is characterized by further comprising a solid filling aggregate conveying part, a composite filling part and a filling feedback part;
the composite filling part comprises a spiral pushing device and a cementing slurry applying device;
the spiral pushing device is arranged on the base (8) and comprises a sliding seat (22), a spiral pushing component and a filling isolation vertical plate (28); the sliding seat (22) is arranged on the base (8) in a sliding fit manner through a sliding guide mechanism (23) arranged along the front-back direction, and the sliding seat (22) is connected with a filling counter-force seat (9) fixedly arranged on the base (8) through a sliding control hydraulic cylinder (12); the spiral pushing assembly comprises a spiral pushing power component (13), a spiral conveying main shaft and a spiral pushing sleeve (14), wherein the spiral conveying main shaft comprising spiral pushing blades (16) extending out along the radial direction is in transmission connection with the spiral pushing power component (13), the spiral pushing sleeve (14) matched with the spiral pushing blades (16) is sleeved outside the spiral conveying main shaft, the spiral pushing sleeve (14) with a sealed front end and an open rear end is fixedly connected with the sliding seat (22), and a filling feed port (15) communicated with the inner cavity of the spiral pushing sleeve (14) is further arranged on the spiral pushing sleeve (14); the vertical filling isolation vertical plate (28) is provided with a filling port which is correspondingly matched with the spiral pushing sleeve (14), the filling isolation vertical plate (28) is fixedly connected with the rear end of the spiral pushing sleeve (14) in a sealing manner, the height and the width of the filling isolation vertical plate (28) are respectively matched with the supporting height and the width of the frame body part, and the outline edge position of the filling isolation vertical plate (28) is fixedly provided with a closed air bag (29) comprising a filling and deflating mechanism;
the cementing slurry applying device comprises a cementing slurry conveying pipeline (17) and a filling area grouting pipe (18); the filling area grouting pipe (18) is of a flower pipe structure, and the filling area grouting pipe (18) which is arranged in a protruding mode to the rear is fixedly arranged on the filling isolation vertical plate (28); the input end of the cementing slurry conveying pipeline (17) is connected with a cementing slurry pumping mechanism, and the output end of the cementing slurry conveying pipeline (17) is connected with a filling area grouting pipe (18) in a sealing installation manner;
the solid filling aggregate conveying part comprises a feeding conveying device (25) which is obliquely arranged, the feeding conveying device (25) comprises a feeding hole (26) at the low end and a discharging hole (27) at the high end, and the discharging hole (27) is arranged corresponding to the filling feeding hole (15);
the filling feedback part comprises an optical fiber stress sensor for sensing filling pressure of a filling area and a liquid level sensor (31) for sensing application amount of cementing slurry, the optical fiber stress sensor is wound on an optical fiber paying-off roller (30) positioned on the base (8), and the liquid level sensor (31) is arranged on the filling isolation vertical plate (28).
2. The solid waste consolidated fill mining hydraulic bracket of claim 1, wherein the length dimension of the screw conveyor spindle in the fore-and-aft direction is greater than the length dimension of the screw pushing sleeve (14) in the fore-and-aft direction.
3. The solid waste consolidated fill mining hydraulic bracket according to claim 1, wherein the length dimension of the screw conveying main shaft in the front-rear direction is matched with the length dimension of the screw pushing sleeve (14) in the front-rear direction.
4. A solid waste cement compact filling mining hydraulic support according to claim 1, 2 or 3, characterized in that the filling isolation vertical plate (28) is also fixedly provided with a vibrating rod (20) comprising a vibration driving mechanism, and the vibrating rod (20) is extended backward.
5. The solid waste cement compact filling mining hydraulic support according to claim 4, wherein the vibrating rod (20) is located at the bottom of the filling isolation riser (28), and the filling area grouting pipe (18) is located at the top of the filling isolation riser (28).
6. A solid waste cementing compact filling mining hydraulic support according to claim 1, 2 or 3, characterized in that a synchronous pushing hydraulic cylinder (10) which is consistent with the extending and contracting direction of the sliding control hydraulic cylinder (12) is further arranged on the filling counterforce seat (9), and the extending and contracting end of the synchronous pushing hydraulic cylinder (10) is connected with a spiral pushing sleeve (14) or a spiral pushing power component (13) in a mounting way.
7. A solid waste cementing compact filling mining hydraulic support according to claim 1, 2 or 3, characterized in that a post-frame slitting device (24) is arranged at the rear end of the base (8) at a position corresponding to the lower part of the optical fiber paying-off roller (30), the post-frame slitting device (24) comprises a plowshare which is bent to the front lower part and takes a hook shape, the plowshare is hooked into the bottom plate, an optical fiber stress sensor traction guide structure is arranged on the plowshare, and the optical fiber stress sensor passes through the optical fiber stress sensor traction guide structure.
8. A solid waste cemented compact filling mining hydraulic prop according to claim 1 or 2 or 3, characterized in that the input end of the cemented slurry delivery line (17) is connected to the cemented slurry pumping mechanism by means of a three-way control joint, the other passage of which is connected to the water injection mechanism.
9. The solid waste cementing compact filling mining hydraulic support according to claim 8, wherein a water outlet (21) capable of being opened and closed is arranged at the bottom of the filling isolation vertical plate (28), and a water permeable and slurry impermeable selectively permeable membrane is arranged on the water outlet (21).
10. A solid waste cemented compact filling mining hydraulic prop according to claim 1 or 2 or 3, characterized in that the top of the filling isolation riser (28) is provided with an openable and closable exhaust port (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311224266.XA CN117328919A (en) | 2023-09-21 | 2023-09-21 | Solid waste cementing compact filling exploitation hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311224266.XA CN117328919A (en) | 2023-09-21 | 2023-09-21 | Solid waste cementing compact filling exploitation hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117328919A true CN117328919A (en) | 2024-01-02 |
Family
ID=89276535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311224266.XA Pending CN117328919A (en) | 2023-09-21 | 2023-09-21 | Solid waste cementing compact filling exploitation hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117328919A (en) |
-
2023
- 2023-09-21 CN CN202311224266.XA patent/CN117328919A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110656937B (en) | Fluidized coal gas simultaneous mining system and method | |
| CN102425427B (en) | Method for constructing tunnel by utilizing shield empty-pushing crossing mine method | |
| CN101701526B (en) | Goaf bag-type packing method | |
| CN104564137B (en) | Handling method and device for double-medium stacked supporting and hard top plate type mined-out area | |
| CN101858215B (en) | Road retained method for extrusion molding of waste rock | |
| CN113338801B (en) | Fluidized hydraulic coal mining method for directional drilling on ground | |
| CN113338802B (en) | Fluidized hydraulic coal mining system for ground directional drilling | |
| CN205638519U (en) | Girdle solid filling support | |
| CN112627820B (en) | Coal pillar-free mining method for 'three lower' coal pressing | |
| CN105756702A (en) | Roadway-side mesh cage filling supporting gob-side entry retaining method | |
| CN103161498B (en) | Method for filling coal pillar beside roadway in steep coal seam section | |
| CN114352345B (en) | Low-permeability inclined coal seam coal and gas fluidization co-mining system and method | |
| CN113756868B (en) | Geotechnical engineering underground side wall construction method | |
| CN109268042A (en) | A kind of small pilot tunnel leading support equipment and construction method | |
| CN212225213U (en) | Inclined shaft construction equipment | |
| CN105649673A (en) | Roadside gangue mixture filling and gob-side entry retaining method for large-dip angle coal seams | |
| CN211144498U (en) | Novel shield cutter head | |
| CN111550245A (en) | Hydraulic mechanical coal mining method for steep coal seam | |
| CN117328919A (en) | Solid waste cementing compact filling exploitation hydraulic support | |
| CN217925903U (en) | Complicated geology slip casting device | |
| CN209115129U (en) | A kind of small pilot tunnel leading support equipment | |
| CN117432464A (en) | Long-acting control method for high-compactness filling mining rock stratum under important facilities | |
| CN110821508A (en) | Rock mining device and method for penetrating through surrounding rock of broken zone | |
| CN108265769B (en) | Seamless grooving machine for thin-wall continuous wall and construction process thereof | |
| CN102444420B (en) | Dragging tube type filling method of thin coal bed fractured roof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |