CN101858215B - Road retained method for extrusion molding of waste rock - Google Patents
Road retained method for extrusion molding of waste rock Download PDFInfo
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- CN101858215B CN101858215B CN201010160717A CN201010160717A CN101858215B CN 101858215 B CN101858215 B CN 101858215B CN 201010160717 A CN201010160717 A CN 201010160717A CN 201010160717 A CN201010160717 A CN 201010160717A CN 101858215 B CN101858215 B CN 101858215B
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Abstract
The invention relates to a road retained method for extrusion molding of waste rock, belonging to the technical field of mine exploitation and comprising the following steps of: (1) fixing a template beside the road to be retained, wherein the template is placed vertically and parallel to the road, faces to a goaf, and a certain distance is maintained between the template and the goaf to form an area to be filled; (2) smashing the waste rock into granules, adding cementitous materials to stir uniformly to form filler; (3) filling the filler in the area to be filled to form an infill; and (4) removing the template and moving the template along the work surface, and then entering the next filling circle. The invention realizes a retained road by using the waste rock as raw materials, changes waste material into things of value, and reduces discharging pollutants of waste rock; a rock bolt is added beside the road so that the stability of the retained road is increased; comprehensive mechanic operation is adopted, thereby the labor intensity is reduced and the efficiency is improved; opened operation is adopted, therefore, the problems of pipe blocking and the like are avoided and better reliability are achieved; the extraction and support for the retained road are free from cross interference and in great safe condition; and the obtained infill has great width, reasonable structure, low air leakage ratio and great reliability.
Description
Technical field
The invention belongs to the mining technical field, relate to a kind of method of utilizing spoil to fill gob side entry retaining.
Background technology
Edge air gallery technology is meant when the coal-face back production; Excavation support does not return merger and takes strengthening measure to keep machine lane or the return airway of tunnel as adjacent work plane; This technology has the advantage of the following aspects; Especially anxiety is taken in adaptation, the face of adopting is controlled difficulty, the little stope of pressure: at first, gob side entry retaining can reduce loss of coal pillar, improves the coal resources rate of extraction; Second; Increase the adjacent face gas extraction time; Behind the projecting coal bed employing gob side entry retaining, adjacent work plane can stay the lane side to continue to draw out methane, and the gas drainage under suction time of adjacent work plane is doubled; The gas drainage under suction effect will obviously improve, and the work plane safety production condition will effectively be improved; The 3rd, can reduce the tunnelling amount, reduce labour intensity, simultaneously for mine, reduced the concentrated stress of coal column in the protected seam with outburst danger, it is nearly more than 50% that outburst hazard is reduced.
In the edge air gallery technology, what the staying of tunnel established common employing is to build work stone wall, close standing props and measures such as grillage or the filling of Gao Shui (lotion) quick-set, but all there is certain deficiency in these measures, have limited the development of edge air gallery technology to a certain extent:
1) builds work stone wall materials barnacle piece in the following thinner seam of the thick about 1.5m of coal and safeguard tunnel, coal-face rear, prepare for next work plane secondary uses.Yet work stone is a fragile material, receive mining pressure after deformation failure serious, maintenance workload is big.2) close standing props and grillage are only applicable to big gun and adopt the thin and medium-thickness seam coal-face of present low gas, and this method is leaked out seriously, and consumption of materials is big, and the roadway maintenance effect is relatively poor, and mechanization degree is low.3) Gao Shui (lotion) quick-set is filled mainly with multiple materials such as gypsum, lime, fast coagulating early strength agents; Mix certain amount of industrial waste residue (like flyash, slag, flue dust, spoil powder etc.) again and be mixed with slurries (or lotion) material, use double-acting pump through pipeline with packing material deliver into wait to fill a vacancy between.But this method packing material cost is higher, the other obturator width narrower (being generally 2-3m) in lane, and bearing capacity is not enough; Fill process is complicated, and the normal race slurry that occurs reveals the slurry accident; Materials processing and pad device cost an arm and a leg etc.
Summary of the invention
Based on the problems referred to above, the invention provides a kind of road retained method for extrusion molding of waste rock.
For realizing this purpose; The technical scheme that the present invention adopts is: road retained method for extrusion molding of waste rock; May further comprise the steps: 1) template is fixed on and waits to stay by the tunnel; Template is moved towards parallel, is vertically placed towards the goaf with the tunnel, keeps certain distance between template and the goaf, between be the area to be filled; 2) be broken into the spoil particle to spoil, add forming inserts after cementitious materials stirs; 3) inserts is charged into area to be filled and compacting, form obturator; 4) remove template, and template is moved along advance of the face direction, carry out next then and fill circulation.
Have notch on the said template, the notch place is provided with the anchor pole gripping mechanism, inserts anchor pole from notch to the area to be filled before filling, and with the anchor pole gripping mechanism anchor pole is fixed.This operation can add anchor to obturator automatically in filling process, with further raising obturator intensity.
Said template is spliced by longitudinal extension plate and anchor pole fixed head two parts, and both vertical edges are detachably connected, and the anchor pole fixed head is provided with near a last circulation obturator, and said notch is opened on the anchor pole fixed head.
Said template lower rear is equipped with base, and base is provided with hydraulic vertical prop, and the hydraulic vertical prop top is fixed with girder steel; During fixed form, rise hydraulic prop, make the girder steel that is fixed on the hydraulic prop top prop up top board; Other gets a hydraulic mandril, and one of which end vertical formwork is withstood on the base, and the other end stretches out, withstands on the ore pillar relative with the goaf.
Carry out setting up compaction apparatus in the port, area to be filled earlier before the step 3); This compaction apparatus comprises pressing plate and the substrate that keeps flat; One edge of pressing plate lower edge and substrate is hinged; Be equipped with between pressing plate and substrate and can drive the hydraulic stem of pressing plate, but the substrate upper fixed there is the hydraulic support of longitudinal extension along the jointed shaft rotation; Make pressing plate towards the goaf when setting up, rise hydraulic support then and make it to hold out against top board.
Said compaction apparatus also comprises the inserts conveyer, and the discharging opening of inserts conveyer is suspended on the hydraulic support, is in above the pressing plate.
Edge, tunnel at the coal-face rear at goaf side, is broken into spoil particle with the discarded spoil in down-hole or ground with working face mining; The spoil particle transport is arrived the face end of Liu Xiang position with belt conveyer; Add cementitious materials through the batching mixer and mix inserts; Inserts is delivered to port top, area to be filled by the inserts conveyer then, and through being suspended on the discharging opening blowing on the hydraulic support.
Among the present invention, broken spoil transports → add cementitious matter through waste bin → belt successively to be mixed and stirs → go up inserts conveyer → spoil fillings → skyhook → spoil extruding and strengthen moulding → move frame → steps such as next circulation fillings, brings the supporting tunnel at side, lane formation high strength spoil; Primary raw material wherein is the spoil of discarding; Not only cost is low, efficient is high, also spoil is turned waste into wealth, and accomplishes that coal mine waste rock does not go out well or goes out well less; Reduce the spoil lifting capacity, reduced the spoil exhaust emission.
Compare with existing block work stone wall gob side entry retaining, close standing props and grillage edge air gallery technology, mechanization degree of the present invention is high, has promoted operating efficiency and safety greatly, can fully guarantee exploitation and stay the lane to carry out synchronously, and labor strength is little.Fill edge air gallery technology with Gao Shui (lotion) quick-set and compare, what the present invention adopted is open-sky technique, does not have problems such as plugging, and reliability is high, workable.
In addition, method of the present invention also has following technical advantage:
1) regeneration waste pack width big (can reach 8-12m) is scientific and reasonable for structure, and stability is strong, and filling effect is good, does not ftracture, and air leak rate of air curtain is low, and is favourable to gas preventing and control, stays the lane safe and reliable.
2) before each stays the lane circulation, lean on the tunnel lateral wall to add anchor pole automatically, and then also wire lath can be installed, form the anchor web frame, improved the structural strength of regeneration waste pack greatly, can effectively prevent to fill the tunnel wall caving of side the regeneration waste pack.
3) the spoil extrusion modling stays whole flow charts in lane to carry out at the work plane rear; And working face mining carries out in its place ahead; Plant equipment, coal mining activity, Coal Transport are carried out in different separately room and times respectively with operations such as spoil transportation, end support, filling operation, road maintenances; Mutual no cross interference, safe condition is good.
Description of drawings
Fig. 1 is the structural representation of template and annex thereof;
Fig. 2 fills on-the-spot vertical view;
Fig. 3 is the sketch map of process system of the present invention.
The specific embodiment
Road retained method for extrusion molding of waste rock may further comprise the steps:
1) sets up template and compaction apparatus
As depicted in figs. 1 and 2, template is spliced by longitudinal extension plate 2 and anchor pole fixed head 8 two parts, and both removably connect.When filling first, longitudinal extension plate 2 10 is vertically placed towards the goaf, and made it to move towards parallel with the tunnel, longitudinal extension plate 2 keeps certain distance with the refuse compartment of goaf 10 inbreaks, between be the area to be filled; Longitudinal extension plate 2 lower rear are equipped with base 6, and hydraulic vertical prop 5 is installed on the base 6, and hydraulic vertical prop 5 tops are fixed with girder steel 3.Stretch out longitudinal extension plate 2, make its height suitable with head-room; Rise hydraulic vertical prop 5, make the girder steel 3 that is fixed on pillar 5 tops prop up top board; Other gets the vertical longitudinal extension plate 2 of hydraulic mandril 7 one ends and withstands on the base 6, and the other end stretches out, withstand on the ore pillar relative with goaf 10.Hydraulic mandril 7 and hydraulic vertical prop 5 cooperations, thus longitudinal extension plate 2 is temporarily fixed at by the lane; Simultaneously, 3 pairs of backs of the girder steel at hydraulic vertical prop 5 and top thereof impose support, also for job safety guarantee are provided.
As shown in Figures 2 and 3, set up compaction apparatus in the port, area to be filled.Substrate 14 and inserts conveyer 16 that this compaction apparatus comprises pressing plate 11, keeps flat; One edge of pressing plate 11 lower edges and substrate 14 is hinged; 14 of pressing plate 11 and substrates are equipped with and can drive the hydraulic stem 12 of pressing plate 11 along the jointed shaft rotation, but substrate 14 upper fixed have the hydraulic support 13 of longitudinal extension.Make pressing plate 11 towards the area to be filled when setting up, rise hydraulic support 13 and make it to hold out against back, the discharging opening 15 of inserts conveyer 16 is suspended on the hydraulic support 13 of pressing plate 11 tops.
2) at the edge, tunnel at coal-face rear, at goaf side, the discarded spoil in down-hole or ground is broken into spoil particle 20 with working face mining with spoil crushing engine 17, go into waste bin 18; Belt conveyer 19 is transported to the batching mixer that is in Liu Xiang position face end from waste bin 18 bottom discharging openings with spoil particle 20, adds cementitious materials 21 (like cement) and stirs into inserts.
3) utilize inserts conveyer 16 that inserts is delivered to port top, area to be filled, and, charge into the area to be filled through being suspended on discharging opening 15 blowings on the hydraulic support 13; Stretch hydraulic stem 12, drive pressing plate 11 the inserts compacting.
4) after completion is filled first, reduce longitudinal extension plate 2 and hydraulic prop 5, under the working face ended support traction, longitudinal extension plate 2 is moved along advance of the face direction, carry out next filling circulation.For the second time and before the later filling circulation; Earlier anchor pole fixed head 8 is detachably connected on the vertical edge of longitudinal extension plate 2 near a last obturator 9; Anchor pole fixed head 8 is concordant with longitudinal extension plate 2, has notch 4 on it, and notch 4 places are provided with the anchor pole gripping mechanism; Anchor pole 1 is inserted in the packing space from notch 4, and fix with the anchor pole gripping mechanism.Can in the padding and compacting process, realize adding automatically anchor like this, further promote the intensity of obturator 9.
And the like, the spoil particle that has mixed cementitious materials 21 20 fillings are squeezed into the high strength waste pack.
Claims (5)
1. the spoil extrusion modling gob side entry retaining method of filling is characterized in that, may further comprise the steps:
1) template is fixed on waits to stay by the tunnel, template is moved towards parallel, is vertically placed towards the goaf with the tunnel, keeps certain distance between template and the goaf, between be the area to be filled; Have notch on the said template, the notch place is provided with the anchor pole gripping mechanism, inserts anchor pole from notch to the area to be filled before filling, and with the anchor pole gripping mechanism anchor pole is fixed; Said template is spliced by longitudinal extension plate and anchor pole fixed head two parts, and both vertical edges are detachably connected, and the anchor pole fixed head is provided with near a last circulation obturator, and said notch is opened on the anchor pole fixed head;
2) be broken into the spoil particle to spoil, add forming inserts after cementitious materials stirs;
3) inserts is charged into area to be filled and compacting, form obturator;
4) remove template, and template is moved along advance of the face direction, carry out next then and fill circulation.
2. the method that spoil extrusion modling gob side entry retaining as claimed in claim 1 is filled is characterized in that said template lower rear is equipped with base, and base is provided with hydraulic vertical prop, and the hydraulic vertical prop top is fixed with girder steel; During fixed form, rise hydraulic prop, make the girder steel that is fixed on the hydraulic prop top prop up top board; Other gets a hydraulic mandril, and one of which end vertical formwork is withstood on the base, and the other end stretches out, withstands on the ore pillar relative with the goaf.
3. the method that spoil extrusion modling gob side entry retaining as claimed in claim 1 is filled; It is characterized in that; Carry out setting up compaction apparatus in the port, area to be filled earlier before the step 3), this compaction apparatus comprises pressing plate and the substrate that keeps flat, and an edge of pressing plate lower edge and substrate is hinged; Be equipped with between pressing plate and substrate and can drive the hydraulic stem of pressing plate, but the substrate upper fixed there is the hydraulic support of longitudinal extension along the jointed shaft rotation; Make pressing plate towards the goaf when setting up, rise hydraulic support then and make it to hold out against top board.
4. the method that spoil extrusion modling gob side entry retaining as claimed in claim 3 is filled is characterized in that said compaction apparatus also comprises the inserts conveyer, and the discharging opening of inserts conveyer is suspended on the hydraulic support, is in above the pressing plate.
5. the method for filling like claim 3 or 4 described spoil extrusion modling gob side entry retainings is characterized in that, the edge, tunnel at the coal-face rear at goaf side, is broken into spoil particle with the discarded spoil in down-hole or ground with working face mining; The spoil particle transport is arrived the face end of Liu Xiang position with belt conveyer; Add cementitious materials through the batching mixer and mix inserts; Inserts is delivered to port top, area to be filled by the inserts conveyer then, and through being suspended on the discharging opening blowing on the hydraulic support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010160717A CN101858215B (en) | 2010-04-30 | 2010-04-30 | Road retained method for extrusion molding of waste rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010160717A CN101858215B (en) | 2010-04-30 | 2010-04-30 | Road retained method for extrusion molding of waste rock |
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| Publication Number | Publication Date |
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| CN101858215A CN101858215A (en) | 2010-10-13 |
| CN101858215B true CN101858215B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010160717A Expired - Fee Related CN101858215B (en) | 2010-04-30 | 2010-04-30 | Road retained method for extrusion molding of waste rock |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075188B (en) * | 2012-12-29 | 2014-12-10 | 山东科技大学 | Downhole waste rock filling equipment and filling method using same |
| CN105370279B (en) * | 2015-11-16 | 2017-12-26 | 北京科技大学 | A kind of high initial strength filling coal mining method |
| CN106522947A (en) * | 2016-11-22 | 2017-03-22 | 武汉理工大学 | Prestress artificial pillar |
| CN107387083A (en) * | 2017-09-15 | 2017-11-24 | 中国矿业大学 | A kind of medium-thickness seam gob side entry retaining roadside support body construction method supported using spoil |
| CN109667618A (en) * | 2019-02-25 | 2019-04-23 | 闫红世 | A kind of grouting vehicle backfilling coal cutting roadway |
| CN109751078A (en) * | 2019-03-04 | 2019-05-14 | 中煤能源研究院有限责任公司 | A kind of coal working face end trigonum device for filling and method |
| CN110145340B (en) * | 2019-06-19 | 2020-08-25 | 河南理工大学 | Coal seam crack slip casting plugging device |
| CN111810230B (en) * | 2020-07-20 | 2021-04-02 | 宜昌龙洞湾矿业有限公司 | Method for reinforcing ecological restoration backfill area of ore mining area |
| CN112664266A (en) * | 2021-01-04 | 2021-04-16 | 安徽理工大学 | Underground compressed block stacking type filling system and method |
| CN114087017B (en) * | 2021-11-30 | 2023-10-20 | 河北充填采矿技术有限公司 | Filling body reinforcing structure and roadway retaining space reinforcing method |
Citations (4)
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|---|---|---|---|---|
| GB1484568A (en) * | 1974-08-12 | 1977-09-01 | Cementation Mining Ltd | Shuttering device |
| CN1807843A (en) * | 2005-01-19 | 2006-07-26 | 新汶矿业集团汶南煤矿有限责任公司 | Method for filling goaf by gangue |
| CN101117890A (en) * | 2007-08-17 | 2008-02-06 | 淮南矿业(集团)有限责任公司 | Gob-side entry retaining roadside support method |
| CN101392659A (en) * | 2008-08-05 | 2009-03-25 | 山东华恒矿业有限公司 | Method for directly utilizing downhole gangue |
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2010
- 2010-04-30 CN CN201010160717A patent/CN101858215B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1484568A (en) * | 1974-08-12 | 1977-09-01 | Cementation Mining Ltd | Shuttering device |
| CN1807843A (en) * | 2005-01-19 | 2006-07-26 | 新汶矿业集团汶南煤矿有限责任公司 | Method for filling goaf by gangue |
| CN101117890A (en) * | 2007-08-17 | 2008-02-06 | 淮南矿业(集团)有限责任公司 | Gob-side entry retaining roadside support method |
| CN101392659A (en) * | 2008-08-05 | 2009-03-25 | 山东华恒矿业有限公司 | Method for directly utilizing downhole gangue |
Non-Patent Citations (2)
| Title |
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| 王宜振等.矸石带充填沿空留巷技术的应用.《山东煤炭科技》.2002,(第6期),13. * |
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| CN101858215A (en) | 2010-10-13 |
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Granted publication date: 20121003 Termination date: 20130430 |