CN113202553B - Method for cementing and supporting roof column of ore room by upward filling mining method - Google Patents
Method for cementing and supporting roof column of ore room by upward filling mining method Download PDFInfo
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- CN113202553B CN113202553B CN202110588130.1A CN202110588130A CN113202553B CN 113202553 B CN113202553 B CN 113202553B CN 202110588130 A CN202110588130 A CN 202110588130A CN 113202553 B CN113202553 B CN 113202553B
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- ore
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- height
- suspension
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- 238000011049 filling Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005065 mining Methods 0.000 title claims abstract description 27
- 239000000725 suspension Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000011435 rock Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- -1 delivering equipment Substances 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 3
- 239000004576 sand Substances 0.000 description 4
- 239000010878 waste rock Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a cementing and supporting method for a roof column of an upward filling mining method, which aims at solving the problem that roof cannot be connected in the filling of the mine room of the upward filling mining method, and four suspension struts are reserved in the uppermost layered stoping of the mine room, after ore extraction is finished, a space to be filled is filled with a cementing and filling material through a filling courtyard to form a cementing and filling body, and the cementing and filling body is integrated with the four suspension struts after being condensed to jointly support the roof column of the mine room. Thereby solving the problem that the filling of the ore room can not be connected. The invention has simple process, safety, reliability, simplicity, practicability and lower cost.
Description
Technical Field
The invention belongs to the technical field of underground mining methods, and particularly relates to a method for cementing and supporting a roof column of a mining house by an upward filling mining method.
Background
The filling mining method is to feed filling materials into goaf along with the advance of stoping working surface in a stope room or a ore block so as to perform ground pressure management, control surrounding rock caving and earth surface movement, and perform stoping on the formed filling body or under the protection of the formed filling body. The method is suitable for mining unstable surrounding rock, high-grade, scarce and noble ore bodies, inadmissible earth surfaces, complex mining conditions, such as water bodies, railway trunks, ore bodies under main buildings, ore bodies with spontaneous combustion fire risks and the like.
The upward filling mining method is widely applied in the filling mining method, and the upward filling mining method divides and layers a ore room in a vertical height, and stopes layer by layer from bottom to top. A filling patio is arranged in the ore room for filling, and is sometimes used as lifting equipment, materials, ventilation and pedestrians. Each time one layer is adopted, filling is carried out immediately, and an ore pass and a pedestrian courtyard (which are also used as drainage wells) are constructed in the filling body along the way. The stoping process comprises rock drilling, ore breaking, ore drawing, erection of pedestrian courtyard and ore pass, construction of partition walls, filling, paving of cemented bottom plates and the like. The cementing bottom plates with larger strength are paved on the upper part of each layered filling body, so that the depletion and loss of ore during ore extraction are reduced, and the ore extraction efficiency is improved.
The filling mainly comprises dry filling and cemented filling, wherein the dry filling is to fill a goaf by loose waste rock, and the cemented filling is to perform cemented filling by filling materials with a certain mortar-sand ratio. The loose waste rock filled in the dry type filling can be accumulated in a conical manner at a filling wellhead, the roof can not be fully connected around a mine room, in addition, the loose waste rock filling body has a sedimentation problem, so that the mine room can not be connected, a large amount of free water and slurry attached to the free water are directly discharged out of the mine room due to permeation of the ash sand filling body before condensation, the slurry liquid level of the goaf which is originally filled is reduced, the roof can not be connected, and the filling effect is quite unsatisfactory. Filling roof grafting is a technical problem which is widely focused on each mine using a filling mining method, is directly related to stope safety, is a key technical problem to be solved by the filling mining method, and is not solved well all the time.
Disclosure of Invention
The invention aims to provide a method for cementing and supporting a roof column of a mining house by an upward filling mining method.
The aim of the invention is achieved by the following technical scheme.
The invention relates to a method for supporting roof column cementation of a mining house by upward filling mining, which comprises the steps of horizontally dividing and layering the mining house at vertical height, stoping layer by layer from bottom to top, arranging a filling courtyard in the mining house, using filling materials, personnel and ventilation to discharge the filling materials and the lifting equipment under the filling courtyard, carrying out layered stoping process comprising rock drilling, ore breaking and ore discharging, filling after each layering, constructing ore discharge slide shafts, partition walls and paving cemented bottom plates in each layered filling body,
when rock drilling and ore breaking of the uppermost layered ore body are carried out, four suspension struts are reserved in the uppermost layered ore body, after ore removal, the space to be filled is filled with the cementing filling material through a filling courtyard to form a cementing filling body, and the cementing filling body is integrated with the four suspension struts after condensation to jointly support the roof column of the ore house.
Preferably, the arrangement method of reserving four suspension struts in the uppermost layered ore body is to divide the uppermost layered ore body of the ore room into four areas on the plane uniformly, reserving one suspension strut at the center point of each area, wherein the height H of the suspension strut is Hk more than or equal to H > Hc, the diameter of the suspension strut is 1 m-2 m,
wherein: h is the height of the suspension pillar, hk is the height of the uppermost layered ore body, hy is the height of the working space reserved for mining the uppermost layered ore body, hc is the distance from the surface of the coagulated cemented filling body of the uppermost layered ore body to the roof pillar of the ore house, estimated by adopting the sinking coefficient, hc=λ (hk+hy), and λ is the sinking coefficient of the cemented filling body, namely the ratio of the sinking height of the cemented filling body to the original filling thickness.
Preferably, the cemented filling material comprises water, cement, tailings and crushed stone, and the mixing ratio of the water, the cement, the tailings and the crushed stone is 3:3:4:8.
Compared with the prior art, the invention has the remarkable beneficial effects that: when the stoping is finished, the filling body can be glued with the four suspension struts into a whole even if the filling body subsides, and the four suspension struts can jointly support the roof plate of the ore room, so that the problem of filling roof connection is solved. The invention has simple process, safety, reliability, simplicity, practicability and lower cost.
Drawings
Fig. 1 is a schematic view of the placement of a suspension pillar in a room.
Fig. 2 is a schematic diagram of a cross-sectional structure of a room and an arrangement of suspension struts.
Fig. 3 is a schematic cross-sectional view of the filling effect of the uppermost layered ore body of the ore room.
Fig. 4 is a schematic view of the height of the suspension strut of the room.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in figures 1-4, the method for supporting the roof column cementation of the ore room by the upward filling mining method horizontally divides the ore room into layers on the vertical height, and stopes the ore room layer by layer from bottom to top, arranges a filling courtyard 6 in the ore room, and utilizes the filling courtyard 6 to put down filling materials and lifting equipment, materials, personnel and ventilation, wherein the layered stoping process comprises rock drilling, ore breaking and ore removal, each layer is completed, filling is carried out immediately, and a ore pass 10, a partition wall 11 and a cementing bottom plate are constructed in each layer of filling body 5, and the method is characterized in that
When rock drilling and ore breaking of the uppermost layered ore body are carried out, four suspension pillars 4 are reserved in the uppermost layered ore body and are not fried, after ore removal is finished, as shown in fig. 2, a space to be filled is filled with cementing filling material through a filling courtyard 6 to form a cementing filling body 9, the cementing filling body 9 is integrated with the four suspension pillars 4 after being condensed, and a roof pillar 3 of a mining house is supported together, wherein 8 is an adjacent filling body of a mined house.
As shown in figure 1, the arrangement method for reserving four suspension pillars 4 in the uppermost layered ore body of the ore room is that the uppermost layered ore body of the ore room is divided into four areas on a plane, one suspension pillar 4 is reserved at the center point of each area for not explosion, as shown in figure 4, the height H of the suspension pillar 4 is Hk more than or equal to H > Hc, the cement filling body 9 of the uppermost layered is ensured to be integrated with the suspension pillar 4 after sedimentation and condensation, and the diameter of the suspension pillar is 1 m-2 m.
Wherein: h is the height of the suspension pillars 4, hk is the height of the uppermost layered ore body 7, hy is the height of the working space 12 reserved for collecting the uppermost layered ore body 7, hc is the distance from the surface of the coagulated cementitious filler 9 of the uppermost layered ore body to the roof column 3 of the ore house, estimated by using the sinking coefficient, hc=λ (hk+hy), λ is the sinking coefficient of the cementitious filler, and is the ratio of the sinking height of the cementitious filler to the original filling thickness.
The cementing filling material comprises water, cement, sand and crushed stone, wherein the mixing ratio of the water, the cement, the sand and the crushed stone is 3:3:4:8, and the cementing filling material can also be adjusted according to actual conditions.
Numbering in the figures: 1 is an adjacent unmilled room; 2 is a stud; and 12 is a working space reserved for mining the uppermost layered ore body.
Claims (2)
1. A method for supporting the roof column of ore house by cementing in upward filling mining method includes such steps as horizontally dividing the ore house by layers at vertical height, stoping from bottom to top, arranging filling patio (6) in the ore house, delivering filler, delivering equipment, material, personnel and ventilation by using said filling patio (6), drilling rock, breaking ore, extracting ore, filling, constructing ore pass (10), partition wall (11) and paving cementing bottom plate in each layered filler (5),
when rock drilling and ore breaking of the uppermost layered ore body are carried out, four suspension struts (4) are reserved in the uppermost layered ore body, after ore removal, a space to be filled is filled with a cemented filling material through a filling courtyard (6), a cemented filling body (9) is formed, and the cemented filling body (9) and the four suspension struts (4) are integrated after condensation to jointly support a roof column (3) of the ore;
the arrangement method of reserving four suspension struts (4) in the uppermost layered ore body is to divide the uppermost layered ore room into four areas on the plane uniformly, reserving one suspension strut (4) at the center point of each area, wherein the height H of the suspension strut (4) is Hk is more than or equal to H > Hc, the diameter of the suspension strut is 1 m-2 m,
wherein: h is the height of the suspension pillar (4), hk is the height of the uppermost layered ore body (7), hy is the height of the working space (12) reserved for collecting the uppermost layered ore body (7), hc is the distance from the surface of the coagulated cemented filling body (9) of the uppermost layered ore body to the roof column (3) of the ore house, estimated by adopting the sinking coefficient, hc=λ (hk+hy), and λ is the sinking coefficient of the cemented filling body, namely the ratio of the sinking height of the cemented filling body to the original filling thickness.
2. The method of roof column cementation support in an upward filling mining process according to claim 1, wherein the cementation filling material comprises water, cement, tailings and crushed stone, and the mixing ratio of the water, the cement, the tailings and the crushed stone is 3:3:4:8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110588130.1A CN113202553B (en) | 2021-05-28 | 2021-05-28 | Method for cementing and supporting roof column of ore room by upward filling mining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110588130.1A CN113202553B (en) | 2021-05-28 | 2021-05-28 | Method for cementing and supporting roof column of ore room by upward filling mining method |
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| Publication Number | Publication Date |
|---|---|
| CN113202553A CN113202553A (en) | 2021-08-03 |
| CN113202553B true CN113202553B (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110588130.1A Active CN113202553B (en) | 2021-05-28 | 2021-05-28 | Method for cementing and supporting roof column of ore room by upward filling mining method |
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| CN (1) | CN113202553B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1266988A1 (en) * | 1985-06-03 | 1986-10-30 | Магнитогорский горно-металлургический институт им.Г.И.Носова | Method of working pillars |
| CN102953732A (en) * | 2011-08-17 | 2013-03-06 | 彭康 | Room-and-pillar major-diameter longhole inverted-step-like segmented lateral caving subsequent filling mining method |
| CN105178960A (en) * | 2015-08-07 | 2015-12-23 | 辽宁科技大学 | Closed type capping method by upward filling mining |
| CN108625855A (en) * | 2018-06-11 | 2018-10-09 | 安徽大昌矿业集团有限公司 | Safe and efficient mining methods under a kind of obturation |
| CN110295909A (en) * | 2019-07-23 | 2019-10-01 | 北京矿冶科技集团有限公司 | Only stay mining methods under the obturation of tooth form ore pillar |
| CN111677509A (en) * | 2020-06-01 | 2020-09-18 | 南华大学 | Cooperative mining method for inclined thick and large ore body |
-
2021
- 2021-05-28 CN CN202110588130.1A patent/CN113202553B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1266988A1 (en) * | 1985-06-03 | 1986-10-30 | Магнитогорский горно-металлургический институт им.Г.И.Носова | Method of working pillars |
| CN102953732A (en) * | 2011-08-17 | 2013-03-06 | 彭康 | Room-and-pillar major-diameter longhole inverted-step-like segmented lateral caving subsequent filling mining method |
| CN105178960A (en) * | 2015-08-07 | 2015-12-23 | 辽宁科技大学 | Closed type capping method by upward filling mining |
| CN108625855A (en) * | 2018-06-11 | 2018-10-09 | 安徽大昌矿业集团有限公司 | Safe and efficient mining methods under a kind of obturation |
| CN110295909A (en) * | 2019-07-23 | 2019-10-01 | 北京矿冶科技集团有限公司 | Only stay mining methods under the obturation of tooth form ore pillar |
| CN111677509A (en) * | 2020-06-01 | 2020-09-18 | 南华大学 | Cooperative mining method for inclined thick and large ore body |
Non-Patent Citations (1)
| Title |
|---|
| 采空区充填接顶技术的探讨;陈爱国;长沙矿山研究院季刊(第04期);第60-63页 * |
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| CN113202553A (en) | 2021-08-03 |
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