CN103046955A - Large-range goaf group filling method - Google Patents

Large-range goaf group filling method Download PDF

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Publication number
CN103046955A
CN103046955A CN2012105651902A CN201210565190A CN103046955A CN 103046955 A CN103046955 A CN 103046955A CN 2012105651902 A CN2012105651902 A CN 2012105651902A CN 201210565190 A CN201210565190 A CN 201210565190A CN 103046955 A CN103046955 A CN 103046955A
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China
Prior art keywords
filling
goaf
counterfort
unicom
scale
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Pending
Application number
CN2012105651902A
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Chinese (zh)
Inventor
南世卿
付建新
宋卫东
宋爱东
韩瑞亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing University of Technology
University of Science and Technology Beijing USTB
Hebei Iron and Steel Group Mining Co Ltd
HBIS Co Ltd
Hebei Iron and Steel Group Co Ltd
Original Assignee
University of Science and Technology Beijing USTB
HBIS Co Ltd
Hebei Iron and Steel Group Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by University of Science and Technology Beijing USTB, HBIS Co Ltd, Hebei Iron and Steel Group Co Ltd filed Critical University of Science and Technology Beijing USTB
Priority to CN2012105651902A priority Critical patent/CN103046955A/en
Publication of CN103046955A publication Critical patent/CN103046955A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a large-range goaf group filling method and belongs to the technical field of mining engineering. According to the technical scheme, the method includes: dividing filling units, selecting filling material, and laying out filling pipes; calculating to determine the thickness of a filling retaining wall, performing site construction, reserving drain holes and filter holes in the filling retaining wall, and stacking a hillock inverted filter layer behind the filling retaining wall; laying filter pipes, allowing the filter pipes to extend out from the drain holes of the filling retaining wall; constructing a filling borehole, 133mm-150mm in diameter, at a highest point, applying the filling borehole as an overhead discharge point, ensuring roof contact, constructing the corresponding number of filling boreholes according to practical situation, and performing alternating filling. The large-range goaf group filling method has the advantages that filling process is simplified, filling efficiency is increased, plugging amount is decreased, filling amount is decreased, filling period is shortened, filling cost is lowered, and normal mine production is guaranteed.

Description

A kind of method for filling and treating of goaf group on a large scale
Technical field
The present invention relates to a kind of method for filling and treating of goaf group on a large scale, belong to the mining engineering technical field.
Background technology
At present, to increasing substantially of mineral resources demand, so that China increases substantially mining intensity, goaf quantity sharply increases, and has formed large-scale goaf group in some areas.As one of mine major hazard source, the goaf has a strong impact on the safety in production in mine, is also threatening the security of the lives and property and the ecological environment of surrounding resident.Along with the increase of open-assembly time of these goafs, stability is constantly brought out the geological disasters such as eboulement, landslide, mud-rock flow, surface collapse also worse and worse, must administer as early as possible.There are the problems such as filling process is complicated, the shutoff amount is large, filling cost is higher, pack effectiveness is on the low side in background technology Goaf Area filling treatment.
Summary of the invention
The object of the invention provides a kind of method for filling and treating of goaf group on a large scale ,Can simplify filling process, improve pack effectiveness, can reduce again shutoff amount, filling construction volume, shorten the filling treatment duration, reduce the filling expense, guarantee that the mine normally produces, solve the problems referred to above that exist in the background technology.
Technical scheme of the present invention is: a kind of method for filling and treating of goaf group on a large scale, and it is as follows to comprise following processing step:
1. at first carry out the division of filling unit; Be divided into the mutual UNICOM in goaf, relatively independent of same filling unit; In the filling unit by courtyard and upper horizontal footrill UNICOM or saturating point;
2. determine goaf quantity, inner UNICOM situation, the goaf volume that each filling unit comprises; Determine number of partitions according to goaf quantity; The goaf that communicates with one another is divided into a district, according to the goaf volume, determines the use amount of casting resin;
3. determine filling unit periphery situation, comprise with upper entry UNICOM situation, same level or the lower horizontal condition of production, connect with well lane engineering on every side; UNICOM has appearred in goaf and upper entry when the filling unit, and UNICOM's mouth is as the filling feed opening; When same level or the lower level place in goaf have mineral building to produce, that the goaf is tight with all passway shutoff of producing mineral building UNICOM; If the goaf connects with well lane engineering on every side, openings is carried out shutoff;
4. determine geologic structure, joint fissure, the tomography situation of filling unit; If ROCK MASS JOINT crack or tomography are grown very much, cause the inner and outside appearance in goaf to connect, crack or tomography are processed, adopt the method for slip casting that the crack is processed, in advance the crack is shut;
5. carry out goaf filling and process, filling slurry comprises three kinds of full tailings, classified tailings and cemented filling materials, selects wherein one or more to mix and uses; Filling slurry keeps mobile, water retention;
6. filling slurry is emitted from the sand storehouse, enters mixing drum and mixes with cement mixing, directly transfers to horizontal mid-section tunnel on the filling unit by holing from the filling slurry that mixing drum is emitted, and enters stope filling by the filling pipeline of laying; When arranging filling pipeline, consider filling pipeline total length and filling pipeline entrance to the ratio of the discrepancy in elevation of outlet, the realization gravity flow is carried, otherwise takes the pressurization measure;
7. in the tunnel filling counterfort is set, filling counterfort drift section of living in should be greater than design barricade cross dimensions; Draining is convenient near the goaf in the filling counterfort present position; Filling counterfort adopts reinforced concrete structure barricade, thickness 0.50m-0.55m.
8. the drainage underground pipe passes from filling counterfort;
9. before the filling, determine the goaf peak, at peak position construction filling borehole, carry out high-order blanking filling, guarantee to connect the top effect, apart from 30-40m, during filling, for guaranteeing the smooth of inner filling surface, carry out alternately filling between each filling borehole.
At the dark wedge shape antiskid groove of filling counterfort position surrounding rock body construction 30cm, and the wedge shape antiskid groove between filling counterfort and peripheral rock around 3-5 anchor pile is set, anchor pile one end and steel mesh reinforcement welding are cemented in the filling counterfort, and the other end gos deep into rock mass.
3-5 drain holes arranging on the filling counterfort, the water with behind the quick discharge barricade reduces barricade pressure, and reservation treatment hole interface links to each other with filter pipe in the filling area, arrange filter pipe, and stretch out outside the wall by the treatment hole of filling counterfort, discharge moisture in the goaf; The level interval of drain hole and vertically array pitch be 1-2m, drain hole should outwards be done 5% the gradient, be beneficial to water rapidly under let out; Drain hole is selected circular, and diameter is 5cm, and the drain hole levels is staggeredly arranged, the metope that is whole filling counterfort is quincunx cloth hole, minimum several rows of water hole should be higher than the front ground of wall, and when before the filling counterfort water being arranged, minimum several rows of water hole should be higher than the front water level of filling counterfort.
Do loaded filter with the weaving slip, behind filling counterfort, with textile material whole metope is paved with.Also can use barren rock as loaded filter, behind barren rock stacking and filling counterfort, it is 100cm-150cm that barren rock is stacked thickness.
Stope arranged around filter pipe, the starting point of filter pipe is selected in the top board place, draws from the filling counterfort of far-end, increases drainage area.When the top board exposed area is 500 ㎡, arrange 3-5 root filter pipe.
Underground filling speed is 50m per hour 3, when mass concentration was 70%, the back-up sand material left standstill the rear upper strata water yield at most for 15m so 3, arrange two filter pipes on each horizontal plane; When filter pipe is set, 5 ‰ gradients should be arranged, be beneficial to flowing and discharge of moisture.
Beneficial effect of the present invention is: can simplify filling process, improve pack effectiveness, can reduce again shutoff amount, filling construction volume, shorten the filling treatment duration, reduce the filling expense, guarantee that the mine normally produces.
Description of drawings
Fig. 1 is goaf group subregion filling floor map;
Fig. 2 is goaf group subregion filling elevational schematic view;
Fig. 3 is the filling counterfort plan view;
Fig. 4 is the filling counterfort sectional drawing;
Among the figure: goaf 1, tunnel 2, filling counterfort 3, coboundary, goaf 4, polycrystalline substance border 5, filter pipe 6, filling borehole 7, courtyard 8, filling pipeline 9, upper entry 10, lower entry 11, hillock be counter considers layer 12, drain hole 13, anchor pile 14, steel mesh reinforcement 15.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described by embodiment.
Among the embodiment, certain iron ore was in the fairly large strip mining transformation of beginning in 1975, and in calendar year 2001 and 2003, development ﹠ construction were carried out in front and back at twice p-60 meters stage casing mineral resources, formed mineral building and tunnel in underground mining, and Chuan Mai runs through ore body in the tunnel.There is the illegal mining phenomenon near the mineral ore, destroyed the production program in mine, form some goafs 1 and tunnel 2.Owing to adopt open-stope mining and management, formed 147 goafs in-60m level, the perforation phenomenon has appearred in most of goaf, crisscross, many places saturating point, stable extreme difference have occurred with upper entry, having had a strong impact on the normal production in mine, is typical case's goaf group on a large scale.
Adopt method of the present invention to this goaf group subregion filling on a large scale, p-60m processes in horizontal goaf, concrete processing step:
(1) according to present goaf distribution situation, general-60m horizontal mid-section goaf is divided for 9 filling unit, carries out successively filling treatment;
(2) according to the present mine condition of production, carry out and guarantee roof safety after the goaf filling for the safety that guarantees lower horizontal production, determine to adopt the method for consolidated fill, bottom adopts the filling slurry of 1:8, use 1:10 instead behind the filling 3-5m, concentration should remain on more than 65%.
(3) filling slurry is emitted from the sand storehouse and is entered mixing drum and mix with cement mixing, directly transfers to tunnel, 0m stage casing, filling unit by holing from the filling slurry that mixing drum is emitted, and enters the filling unit by the filling pipeline 9 of laying and carries out filling.
(4) according to the division of filling unit, arranged altogether 43 road filling counterforts 3, the different situations according to goaf in the filling unit behind the filling counterfort arrange, and thickness is from 0.3m-0.6m.Three drain holes 13 have been arranged on each barricade top, and plum blossom arranges that diameter is 50mm, and the gradient is 5%, arrange five treatment holes in the barricade bottom, diameter is 100mm, links to each other with inner filter pipe 6, arrange hillock loaded filter 12 in the barricade back, height 1-1.5m is apart from filling counterfort 1-3m.Adopt annular wedge shape reinforced concrete structure form, and arranging around the wedge shape antiskid groove between concrete guard wall and the peripheral rock in the cementing and filled wall of anchor pile 14, one ends and steel mesh reinforcement 15 welding, the other end gos deep into rock mass 0.6-1m.The angle in sealing filling counterfort supporting surface and tunnel is determined by the character of rock, if the stability of iron ore rock is better, and f〉6, get ,
(5) because inner dead zone situation is complicated, Drainage Design is arranged 4-6 filter pipes, according to goaf situation quantification take single goaf as unit during top board exposed area 1000 ㎡.If the goaf is less and two goaf close together, can merge into a goaf design.The starting point of filter pipe is selected in the top board place, draws from the filling counterfort of far-end, increases drainage area as far as possible.Adopt the ripple filter pipe of diameter 100mm, the not kiss the earth that filter pipe is tried one's best when arranging is in order to avoid affect the effect of draining.
(6) therefore the filling unit that has takes full advantage of courtyard 8 and saturating point in the filling unit, as the filling blanking point because upper entry can't satisfy the requirement that is drilled with filling borehole 7.Arrange filling borehole at peak, utilize existing rig to hole, be drilled into and carry out reaming about 2-3m, with borehole enlargement to 133-150mm, then carry out retaining wall, prevent the hole of collapsing.And then get into assigned address with rig.
Main feature of the present invention is:
(1) takes full advantage of the on-the-spot existing engineering in goaf, simplified filling process, improved filling treatment efficient, reduce the shutoff amount, reduced filling cost.
(2) process the stope Influence of production is little on every side in the goaf, can guarantee the normal production in mine.
(3) owing to adopt the subregion filling, the primary filling amount is large, and is therefore higher to drainage requirement.

Claims (7)

1. goaf group method for filling and treating on a large scale, it is characterized in that: it is as follows to comprise following processing step:
1. at first carry out the division of filling unit; Be divided into the mutual UNICOM in goaf, relatively independent of same filling unit; In the filling unit by courtyard and upper horizontal footrill UNICOM or saturating point;
2. determine goaf quantity, inner UNICOM situation, the goaf volume that each filling unit comprises; Determine number of partitions according to goaf quantity; The goaf that communicates with one another is divided into a district, according to the goaf volume, determines the use amount of casting resin;
3. determine filling unit periphery situation, comprise with upper entry UNICOM situation, same level or the lower horizontal condition of production, connect with well lane engineering on every side; UNICOM has appearred in goaf and upper entry when the filling unit, and UNICOM's mouth is as the filling feed opening; When same level or the lower level place in goaf have mineral building to produce, that the goaf is tight with all passway shutoff of producing mineral building UNICOM; If the goaf connects with well lane engineering on every side, openings is carried out shutoff;
4. determine geologic structure, joint fissure, the tomography situation of filling unit; If ROCK MASS JOINT crack or tomography are grown very much, cause the inner and outside appearance in goaf to connect, crack or tomography are processed, adopt the method for slip casting that the crack is processed, in advance the crack is shut;
5. carry out goaf filling and process, filling slurry comprises three kinds of full tailings, classified tailings and cemented filling materials, selects wherein one or more to mix and uses; Filling slurry keeps mobile, water retention;
6. filling slurry is emitted from the sand storehouse, enters mixing drum and mixes with cement mixing, directly transfers to horizontal mid-section tunnel on the filling unit by holing from the filling slurry that mixing drum is emitted, and enters stope filling by the filling pipeline of laying; When arranging filling pipeline, consider filling pipeline total length and filling pipeline entrance to the ratio of the discrepancy in elevation of outlet, the realization gravity flow is carried, otherwise takes the pressurization measure;
7. in the tunnel filling counterfort is set, filling counterfort drift section of living in should be greater than design barricade cross dimensions; Draining is convenient near the goaf in the filling counterfort present position; Filling counterfort adopts reinforced concrete structure barricade, thickness 0.50m-0.55m;
The drainage underground pipe passes from filling counterfort;
Before the filling, determine the goaf peak, at peak position construction filling borehole, carry out high-order blanking filling, guarantee to connect the top effect, apart from 30-40m, during filling, for guaranteeing the smooth of inner filling surface, carry out alternately filling between each filling borehole.
2. a kind of method for filling and treating of goaf group on a large scale according to claim 1, it is characterized in that: at the dark wedge shape antiskid groove of filling counterfort position surrounding rock body construction 30cm, and the wedge shape antiskid groove between filling counterfort and peripheral rock around 3-5 anchor pile is set, anchor pile one end and steel mesh reinforcement welding are cemented in the filling counterfort, and the other end gos deep into rock mass.
3. a kind of method for filling and treating of goaf group on a large scale according to claim 1 and 2, it is characterized in that: 3-5 drain holes arranging on the filling counterfort, and reserve the treatment hole interface and link to each other with filter pipe in the filling area, the layout filter pipe, and stretch out outside the wall by the treatment hole of filling counterfort; The level interval of drain hole and vertical array pitch are 1-2m, and drain hole should outwards be done 5% the gradient; Drain hole is selected circular, and diameter is 5cm, and the drain hole levels is staggeredly arranged, the metope that is whole filling counterfort is quincunx cloth hole, minimum several rows of water hole should be higher than the front ground of wall, and when before the filling counterfort water being arranged, minimum several rows of water hole should be higher than the front water level of filling counterfort.
4. a kind of method for filling and treating of goaf group on a large scale according to claim 1 and 2 is characterized in that: do loaded filter with the weaving slip, with textile material whole metope is paved with behind filling counterfort.
5. a kind of method for filling and treating of goaf group on a large scale according to claim 1 and 2 is characterized in that: use barren rock as loaded filter, with barren rock stack with filling counterfort after, it is 100cm-150cm that barren rock is stacked thickness.
6. a kind of method for filling and treating of goaf group on a large scale according to claim 1 and 2 is characterized in that: stope arranged around filter pipe, and the starting point of filter pipe is selected in the top board place, draws from the filling counterfort of far-end, increases drainage area;
When the top board exposed area is 500 ㎡, arrange 3-5 root filter pipe.
7. a kind of method for filling and treating of goaf group on a large scale according to claim 1 and 2 is characterized in that: underground filling speed is 50m per hour 3, when mass concentration was 70%, the back-up sand material left standstill the rear upper strata water yield and is at most 15m 3, arrange two filter pipes on each horizontal plane; When filter pipe is set, 5 ‰ gradients are arranged.
CN2012105651902A 2012-12-24 2012-12-24 Large-range goaf group filling method Pending CN103046955A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103233771A (en) * 2013-05-13 2013-08-07 河北钢铁集团矿业有限公司 Roof contacting process in goaf filling treating procedure
CN103939137A (en) * 2014-05-07 2014-07-23 中国矿业大学 Method for filling aeolian sand empty field of western desert mining area shallow coal seam
AU2014393124B2 (en) * 2014-05-08 2016-09-15 China University Of Mining And Technology Water-preserved-mining roof-contacted filling method for controlling fissure of overlying strata and surface subsidence
WO2016150188A1 (en) * 2015-03-25 2016-09-29 中国矿业大学 Method for fracturing filler wall left behind in adjacent coal-mining face
CN106437839A (en) * 2016-11-24 2017-02-22 贵州开磷集团股份有限公司 Water-permeable brick for mine down-hole filling retaining wall and laying method of water-permeable brick
CN106894838A (en) * 2017-02-21 2017-06-27 长沙矿山研究院有限责任公司 Large area insertion dead zone bag type partition substep filling administering method
CN108167017A (en) * 2017-12-18 2018-06-15 固岩科技发展有限公司 A kind of metal mine consolidated fill method of environmental protection cementitious material
CN109736882A (en) * 2019-01-28 2019-05-10 泓锐(新兴)机械科技有限公司 A kind of self-floating Quick drainage technique
WO2019174188A1 (en) * 2018-03-12 2019-09-19 中国矿业大学 Roadway-type cementing filling method for nearly-horizontal coal seam
CN111576492A (en) * 2020-05-06 2020-08-25 中铁隆工程集团有限公司 Construction method for backfilling sand gravel above subway station

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CN102168579A (en) * 2011-04-15 2011-08-31 中南大学 Rib-pillar-free continuous sublevel filling method for mining preparation in medium-thickness slope crushed ore body vein
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103233771A (en) * 2013-05-13 2013-08-07 河北钢铁集团矿业有限公司 Roof contacting process in goaf filling treating procedure
CN103233771B (en) * 2013-05-13 2014-12-31 河北钢铁集团矿业有限公司 Roof contacting process in goaf filling treating procedure
CN103939137B (en) * 2014-05-07 2015-12-02 中国矿业大学 The drift-sand barnyard placement method of western desertification mining area shallow buried coal seam
CN103939137A (en) * 2014-05-07 2014-07-23 中国矿业大学 Method for filling aeolian sand empty field of western desert mining area shallow coal seam
AU2014393124B2 (en) * 2014-05-08 2016-09-15 China University Of Mining And Technology Water-preserved-mining roof-contacted filling method for controlling fissure of overlying strata and surface subsidence
WO2016150188A1 (en) * 2015-03-25 2016-09-29 中国矿业大学 Method for fracturing filler wall left behind in adjacent coal-mining face
CN106437839A (en) * 2016-11-24 2017-02-22 贵州开磷集团股份有限公司 Water-permeable brick for mine down-hole filling retaining wall and laying method of water-permeable brick
CN106894838B (en) * 2017-02-21 2019-10-18 长沙矿山研究院有限责任公司 Large area penetrates through dead zone bag type partition substep filling administering method
CN106894838A (en) * 2017-02-21 2017-06-27 长沙矿山研究院有限责任公司 Large area insertion dead zone bag type partition substep filling administering method
CN108167017A (en) * 2017-12-18 2018-06-15 固岩科技发展有限公司 A kind of metal mine consolidated fill method of environmental protection cementitious material
WO2019174188A1 (en) * 2018-03-12 2019-09-19 中国矿业大学 Roadway-type cementing filling method for nearly-horizontal coal seam
CN109736882A (en) * 2019-01-28 2019-05-10 泓锐(新兴)机械科技有限公司 A kind of self-floating Quick drainage technique
CN109736882B (en) * 2019-01-28 2020-04-17 泓锐(新兴)机械科技有限公司 Self-floating type rapid drainage process
CN111576492A (en) * 2020-05-06 2020-08-25 中铁隆工程集团有限公司 Construction method for backfilling sand gravel above subway station
CN111576492B (en) * 2020-05-06 2021-07-20 中铁隆工程集团有限公司 Construction method for backfilling sand gravel above subway station

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Application publication date: 20130417