CN113202553A - Method for cementing and supporting roof pillar of ore room by upward filling mining method - Google Patents
Method for cementing and supporting roof pillar of ore room by upward filling mining method Download PDFInfo
- Publication number
- CN113202553A CN113202553A CN202110588130.1A CN202110588130A CN113202553A CN 113202553 A CN113202553 A CN 113202553A CN 202110588130 A CN202110588130 A CN 202110588130A CN 113202553 A CN113202553 A CN 113202553A
- Authority
- CN
- China
- Prior art keywords
- filling
- ore
- cementing
- mining
- room
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000005065 mining Methods 0.000 title claims abstract description 29
- 239000000725 suspension Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000011435 rock Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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 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 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
Abstract
The invention discloses a cementing support method for a roof pillar of an upward filling mining method, which aims at the problem that roof connection cannot be realized in the roof filling of an upward filling mining method, four suspension pillars are reserved during the top layered mining of a mine, after ore removal is finished, a cementing filling material is filled in a space to be filled through a filling raise to form a cementing filling body, and the cementing filling body is integrated with the four suspension pillars after being solidified to support the roof pillar of the mine together. Thereby solving the problem that the chamber filling can not be connected with the roof. The invention has simple process, safety, reliability, simplicity, easy operation and lower cost.
Description
Technical Field
The invention belongs to the technical field of underground mining methods, and particularly relates to a roof-pillar cementing and supporting method for an upward filling mining method.
Background
The cut-and-fill method is to feed a cut-and-fill material into a goaf in a stope or a lump with the advancement of a stope face to perform ground pressure management, control surrounding rock caving and surface movement, and perform stoping on or under the protection of the formed pack. The method is suitable for mining unstable high-grade, scarce and valuable ore bodies of surrounding rocks, not allowing the surface of the ground to sink, and complex mining conditions, such as water bodies, railway main lines, ore bodies below main buildings, ore bodies with spontaneous combustion fire hazards and the like.
The upward filling mining method is widely applied, and divides a chamber into layers at a vertical height and stopes layer by layer from bottom to top. In the mine, filling patios are arranged for the injection of the filler, sometimes also for lifting equipment, materials, ventilation and pedestrians. Filling is carried out immediately after each layer is mined, and an ore drawing shaft and a pedestrian raise (also used as a water drainage well) are constructed in a filling body along the way. The stoping process comprises rock drilling, ore caving, ore removal, pedestrian raise and ore pass erection, partition wall building, filling and cementing bottom plate paving and the like. And paving a cementing bottom plate with higher strength on the upper part of each layered filling body so as to reduce the dilution and loss of ores during ore removal and improve the ore removal efficiency.
The filling mainly comprises dry filling and cemented filling, wherein the dry filling is to fill the goaf by using loose waste rocks, and the cemented filling is to perform cemented filling by using a filling material with a certain sand-lime ratio. The dry type is filled because the loose barren rock of filling can appear the taper and pile up at filling the well head, and the ore room can't be full of all around and connect the top, and loose barren rock obturator has the settlement problem in addition, causes the ore room can't connect the top, and cemented filling is because the lime-sand obturator is before the condensation, and the thick liquid that a large amount of free water and free water are adnexed directly discharges the ore room because the infiltration, and the thick liquid level that originally is full of the collecting space area descends, also causes to connect not to push up, and the filling effect is very unsatisfactory. The filling and roof-contacting is a technical problem which is widely concerned by 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 well solved all the time.
Disclosure of Invention
The invention aims to provide a roof pillar cementing and supporting method for an ore room by an upward filling mining method.
The purpose of the invention is realized by the following technical scheme.
The invention relates to a method for cementing and supporting a roof pillar of a mining room by an upward filling mining method, which comprises the steps of horizontally dividing the mining room into layers at the vertical height, stoping layer by layer from bottom to top, arranging a filling raise in the mining room, lowering filling materials and lifting equipment, materials, personnel and ventilating by using the filling raise, carrying out rock drilling, ore caving and ore discharging in the layered stoping process, filling immediately after each layer is mined, constructing an ore drawing chute, a partition wall and a paved cementing bottom plate in each layered filling body, and is characterized in that,
when the rock drilling and ore caving of the uppermost layered ore body are carried out, four suspension struts are reserved in the uppermost layered ore body, after ore removal is finished, the space to be filled is filled with the cemented filling material through the filling raise to form a cemented filling body, and the cemented filling body is integrated with the four suspension struts after being condensed to jointly support the roof strut of the ore house.
Preferably, the arrangement method for reserving four suspension struts in the ore body of the uppermost layer is to divide the uppermost layer of the chamber into four regions on the plane, reserve one suspension strut at the central point of each region, the height H of the suspension strut is that Hk is more than or equal to H and Hc, the diameter of the suspension strut is 1 m-2 m,
in the formula: h is the height of the suspension support, Hk is the height of the uppermost layered ore body, Hy is the height of the operation space reserved for mining the uppermost layered ore body, Hc is the distance between the surface of the cemented filling body of the uppermost layered ore body after being condensed and the top pillar of the chamber, and the subsidence coefficient is adopted for estimation, wherein Hc = lambda (Hk + Hy), and lambda is the subsidence coefficient of the cemented filling body, namely the ratio of the subsidence height of the cemented filling body to the original filling thickness.
Preferably, the cemented filling material comprises water, cement, tailings and crushed stones, and the mixing ratio of the water, the cement, the tailings and the crushed stones is 3:3:4: 8.
Compared with the prior art, the invention has the following remarkable beneficial effects: according to the invention, four suspension type supporting columns are reserved when the top layer of the chamber is stoped, and after the stoping is finished and cemented filling materials are used for filling, the filling body can be cemented with the four suspension type supporting columns into a whole even if settled, so that the top plate of the chamber is supported together, and the problem of roof connection during filling is solved. The invention has simple process, safety, reliability, simplicity, easy operation and lower cost.
Drawings
Fig. 1 is a schematic diagram of the arrangement position of a suspension strut of a mine room.
Fig. 2 is a schematic diagram of the cross-sectional structure of the chamber and the arrangement of the suspension struts.
Fig. 3 is a schematic cross-sectional view of the filling effect of the uppermost layered ore body of the chamber.
Fig. 4 is a schematic diagram of the height of the suspension strut of the chamber.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in figures 1-4, the invention relates to a roof-pillar cementing support method of an upward filling mining method, which is characterized in that a chamber is divided horizontally into layers at the vertical height, stoping is carried out layer by layer from bottom to top, a filling raise 6 is arranged in the chamber, filling materials and lifting equipment, materials, personnel and ventilation are put down by using the filling raise 6, the stoping process of the layers comprises rock drilling, ore caving and ore removal, filling is carried out immediately after each layer is mined, and an ore-drawing chute 10, a partition wall 11 and a paved cementing bottom plate are constructed in each layered filling body 5
As shown in fig. 2, when the rock drilling and ore caving of the top layered ore body are carried out, four suspension struts 4 are reserved in the top layered ore body without explosion, after ore removal is finished, as shown in fig. 3, a space to be filled is filled with a cemented filling material through a filling raise 6 to form a cemented filling body 9, the cemented filling body 9 is integrated with the four suspension struts 4 after being solidified to support the roof pillars 3 of the ore room together, and 8 in the figure is an adjacent filling body of the mined room.
As shown in figure 1, the arrangement method of reserving four suspension struts 4 in the uppermost layered ore body of the invention is that the uppermost layered ore body of the chamber is divided into four areas on the plane, one suspension strut 4 is reserved at the central point of each area without explosion, as shown in figure 4, the height H of the suspension strut 4 is Hk ≧ H > Hc, the cemented filling body 9 of the uppermost layer is ensured to be settled and coagulated and then cemented with the suspension strut 4 into a whole, and the diameter of the suspension strut is 1 m-2 m.
In the formula: h is the height of the suspension strut 4, Hk is the height of the uppermost layered ore body 7, Hy is the height of the operation space 12 reserved for mining the uppermost layered ore body 7, Hc is the distance between the surface of the cemented filling body 9 of the uppermost layered ore body after condensation and the roof pillar 3 of the chamber, and Hc = lambda (Hk + Hy) is estimated by adopting a sinking coefficient, and lambda is the sinking coefficient of the cemented filling body and is the ratio of the sinking height of the cemented filling body to the original filling thickness.
The cemented filling material comprises water, cement, sand and gravel, wherein the mixing ratio of the water, the cement, the sand and the gravel is 3:3:4:8, and can be adjusted according to actual conditions.
Numbering in the figures: 1 is adjacent non-mining room; 2 is a stud; 12 is the working space reserved for mining the uppermost layered ore body.
Claims (3)
1. A method for cementing and supporting the roof pillar of a mining room by an upward filling mining method comprises the steps of horizontally dividing the mining room into layers at the vertical height, stoping layer by layer from bottom to top, arranging a filling raise (6) in the mining room, lowering filling materials and lifting and conveying equipment, materials, personnel and ventilation by using the filling raise (6), wherein the layered stoping process comprises rock drilling, ore caving and ore discharging, filling is carried out immediately after each layer is mined, an ore-drawing chute (10), partition walls (11) and a cementing bottom plate are built in each layered filling body (5), and the method is characterized in that,
when rock drilling and ore caving of the top layered ore body are carried out, four suspension support columns (4) are reserved in the top layered ore body, after ore removal is finished, a cementing filling material is filled in a space to be filled through a filling raise (6) to form a cementing filling body (9), and the cementing filling body (9) is integrated with the four suspension support columns (4) after being condensed to support the roof pillars (3) of the ore room together.
2. The method for the roof-pillar cementing support of the ore room by the upward filling mining method according to claim 1, characterized in that the arrangement method for reserving four suspension struts (4) in the ore body of the uppermost layer is to divide the uppermost layer of the ore room into four areas on the plane, reserve one suspension strut (4) at the central point of each area, the height H of the suspension strut (4) is Hk ≧ H > Hc, the diameter of the suspension strut is 1 m-2 m,
in the formula: h is the height of the suspension support column (4), Hk is the height of the uppermost layered ore body (7), Hy is the height of an operation space (12) reserved for mining the uppermost layered ore body (7), Hc is the distance between the surface of the cemented filling body (9) of the uppermost layered ore body and the roof pillar (3) of the chamber after condensation, and Hc = lambda (Hk + Hy) is estimated by adopting a sinking coefficient, wherein lambda 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.
3. The method for cementing and supporting the roof pillar of the ore room by the upward filling mining method according to claim 1, wherein the cemented filling materials comprise water, cement, tailings and crushed stones, and the mixing ratio of the water, the cement, the tailings and the crushed stones 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113202553A true CN113202553A (en) | 2021-08-03 |
| CN113202553B CN113202553B (en) | 2024-01-12 |
Family
ID=77023257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| 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 |
|---|
| 陈爱国: "采空区充填接顶技术的探讨", 长沙矿山研究院季刊, no. 04, pages 60 - 63 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113202553B (en) | 2024-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104612695B (en) | One acutely collapses shaft wall restoring and fastening method | |
| CN107339104A (en) | Security personnel's curtain wall recovery method | |
| CN105041314A (en) | Method for united mining of deep subsequent stoping chamber and layered stoping jamb | |
| CN104632220B (en) | Mining method with adjustable and controllable structure size of gentle dip medium-thickness ore body strip column reconstructed stope | |
| CN102168579A (en) | Rib-pillar-free continuous sublevel filling method for mining preparation in medium-thickness slope crushed ore body vein | |
| CN102678121A (en) | Layered top-controlling filling mining method for residual ores in deep hole in diskless area | |
| CN112360462A (en) | Mining process for filling and grouting short-wall fully-mechanized mining gangue | |
| CN111878117B (en) | Construction method of artificial roof facility by downward approach filling method | |
| CN107939403A (en) | To cemented filling mining technique under a kind of square crossing rectangle route type panel | |
| CN105781551A (en) | Horizontal strip type mixed filling mining method applicable to three-underground orebody mining | |
| CN113202475B (en) | Filling caving mining method | |
| CN112177612B (en) | Downward high-layering cemented filling mining method | |
| CN111663950A (en) | Advanced support and earth pressure unloading mining method | |
| CN103161467B (en) | Horizontal moderately thick mine body compartment type filling mining method | |
| CN104989408A (en) | Safe and high-efficiency mining method for metal mine in mountainous area | |
| CN210948688U (en) | Artificial false lane | |
| CN109899070B (en) | Slow-inclination medium-thickness ore body solid-waste-free filling mining method based on ellipsoid ore drawing structure | |
| CN103061767B (en) | Lower to horizontal slice Dry-placed fill mining | |
| CN111594168B (en) | Pseudo-goaf-layer supporting and sinking-limiting stoping method formed by matching rock waste with rock waste | |
| CN106761858B (en) | The supporting back production of stull open-stope method and filling new process | |
| CN112593939A (en) | Method for mining 'three lower' coal seam by replacing all coal pillars through gangue double filling | |
| CN111663945A (en) | Open roof cutting roadway type upward wide drift filling mining method | |
| CN113187481B (en) | Filling mining method for centralized grouting caving stoping of overburden rock | |
| CN113202553B (en) | Method for cementing and supporting roof column of ore room by upward filling mining method | |
| CN113818882A (en) | Recovery method for stope top pillar under loose tailing filling body |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |