CN115977641A - Continuous mining method suitable for micro-inclined medium-thickness to thick ore body - Google Patents
Continuous mining method suitable for micro-inclined medium-thickness to thick ore body Download PDFInfo
- Publication number
- CN115977641A CN115977641A CN202310123893.8A CN202310123893A CN115977641A CN 115977641 A CN115977641 A CN 115977641A CN 202310123893 A CN202310123893 A CN 202310123893A CN 115977641 A CN115977641 A CN 115977641A
- Authority
- CN
- China
- Prior art keywords
- ore
- mining
- chamber
- step chamber
- thick
- 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
- 238000005065 mining Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000011435 rock Substances 0.000 claims description 13
- 238000007598 dipping method Methods 0.000 claims description 9
- 238000005422 blasting Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 239000012895 dilution Substances 0.000 abstract description 5
- 238000010790 dilution Methods 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Abstract
The invention relates to the technical field of metal ore mining, and particularly discloses a continuous mining method suitable for a slightly inclined medium-thick to thick ore body, wherein the ore body is subjected to subsection and step-by-step stoping to reduce ore loss caused by reserving ore pillars; the method comprises the following steps of (1) enabling the stope in one step to adopt a trackless process bottom structure of a trench, a ore removal route and a mining main line, wherein the mining main line utilizes a mining roadway at the bottom of the stope in the adjacent step; and the two-step chamber stoping is carried out after the two-step chamber stoping is carried out with cemented filling, and the two-step chamber stoping adopts a bottom structure of a trackless process of trench, inclined chute, ore removal route and mining main line. According to the invention, a roadway excavation mode in the filling body in the traditional mode is eliminated, the safety of bottom structure engineering is effectively guaranteed, trackless process ore removal is adopted in the slightly-inclined medium-thick to thick ore body, the loss and dilution of bottom ore are reduced while the safety is guaranteed, the mining accuracy ratio is reduced by fully utilizing engineering, and the ore body is safely, efficiently and lowly mined in a poor-loss manner.
Description
Technical Field
The invention relates to the technical field of metal ore mining, in particular to a continuous mining method suitable for micro-inclined medium-thickness to thick ore bodies.
Background
In the mining of slightly inclined medium-thick to thick ore bodies, the bottom structure of a stope is limited by ore self-sliding or ore loss and dilution, and the arrangement of ore loss and bottom structure engineering cannot be well balanced.
To the exploitation of this kind of attitude ore body, can adopt the substructure of scraper trough and funnel, but this kind of arrangement mode can't use efficient trackless self-propelled equipment, and mining efficiency is low, the security is poor.
The mining method of one-step mining with permanent ore pillars reserved on the ore body can adopt the bottom structure of a trench + ore removal route + mining main line trackless process, but the permanent ore pillars reserved on the method have high ore loss rate. When the ore body is subjected to two-step continuous stoping, the bottom structure of the two-step chamber is difficult to arrange. At present, a mining main line is generally excavated in a filling body at the bottom of a chamber in an adjacent step, and due to the fact that the strength of the filling body is low, the roadway is excavated in the filling body extremely poor in safety and difficult to construct, supporting modes such as a steel arch frame need to be adopted, and the cost is high.
Disclosure of Invention
The invention aims to provide a continuous mining method suitable for micro-inclined medium-thick to thick ore bodies, which ensures safety, reduces loss and dilution of bottom ores, fully utilizes engineering to reduce mining preparation ratio, and mines the ore bodies safely, efficiently and low in depletion.
The embodiment of the invention is realized by the following technical scheme:
a continuous mining method suitable for use with slightly dipping medium to thick ore bodies, comprising the steps of:
s1, dividing the ore body edge tendency into a plurality of first sections and second sections which are arranged in a staggered mode, wherein the first sections are sequentially divided into the following sections: the method comprises the following steps of (1) a one-step chamber, a two-step chamber and a one-step chamber; the second segment edge trend is divided into: the two-step chamber, the one-step chamber and the two-step chamber; s2, arranging a mining standard roadway at the bottom of each step of the mining room and the bottom of each step of the mining room along the trend; s3, firstly, stoping the first-step chamber, wherein in the first section, any stope roadway positioned at the bottom of the second-step chamber serves as a stope main line of the first-step chamber in the first section; in the second section, the mining standard roadway at the bottom of the two-step chamber serves as a mining standard trunk line of the one-step chamber in the second section; and the first step chamber and the second step chamber adopt trackless technology for ore removal; s4, cementing and filling the ore room in the first step; s5, stoping the two-step chamber, and then forming a standard roadway at the bottom of any two adjacent two-step chambers, wherein the standard roadway is used as a standard mining trunk line of the two-step chambers; s6, filling non-cemented tailings and waste rocks in the two-step chamber.
Further, in S3, a first ore removal route that communicates with all the mining roadways in the first section is opened in the first section, and a second ore removal route that communicates with all the mining roadways in the second section is opened in the second section.
Further, in S5, a third ore removal route is provided below the first ore removal route and the second ore removal route, and two end portions of the third ore removal route are respectively located right below two adjacent two-step chamber.
Further, when the two-step stope is mined, the raise is tunneled upwards to the bottom of the two-step stope at the end part of the third ore removal route, a shallow hole is arranged at the head of the raise, the raise is constructed after a medium-length hole is arranged in a trench tunnel, the two-step stope adopts bottom vertical fan-shaped medium-length hole bottom-drawing and upper vertical deep hole blasting, the shallow hole is blasted while corresponding positions of the two-step stope are blasted, and the head of the raise is expanded and brushed into an inclined chute in the length direction of the trench tunnel.
And further, ore is removed by adopting a bottom structure of a trench, an ore removal route and an accurate mining main line in the ore room in the first step, and ore is removed by adopting a bottom structure of a trackless ore removal of the trench, an inclined chute, the ore removal route and the accurate mining main line in the second step.
Further, the length of the chamber in the first step is 50-60m and the width is 12-15m; the length of the chamber along the strike direction is 50-60m, and the width is 15-20m.
Furthermore, the mining roadway in the first section is positioned on the same horizontal plane, and the distance between every two adjacent mining roadways is 13-17m; and the mining roadways in the second section are positioned on the same horizontal plane, and the distance between every two adjacent mining roadways is 13-15m.
Further, the distance between the first ore removal route and the second ore removal route is 10-12m.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:
1. according to the invention, the ore body is divided into sections along the inclination, so that the sectional mining of the one-step chamber and the two-step chamber is realized, the permanent ore pillar is not required to be reserved as a support, the ore can be maximally mined, and the low-loss mining is realized.
2. The mining preparation roadway of the third ore removal route can be simultaneously used as a mining preparation main line of two-step chamber for ore removal. The mining accurate main line is repeatedly utilized in the mining accurate engineering, so that the bottom structures of the first-step and second-step mining rooms are mutually connected, part of mining cutting engineering quantity is saved, and due to the use of trackless equipment, the operation efficiency is improved, the mining period is shortened, and the mining of slightly inclined ore bodies is more economical.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a cross-sectional view in a biased mining condition provided by example 1 of the present invention;
FIG. 2 is a cross-sectional view along a dip mining condition provided in example 2 of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 1;
icon: 11-a first section, 12-a second section, 13-a one-step chamber, 14-a two-step chamber, 15-a mining roadway, 21-a first ore removal route, 22-a second ore removal route, 23-a third ore removal route, 3-vein penetration, 4-an inclined chute and 5-a chute.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 and 3, the present invention provides a continuous mining method for micro-dipping medium to thick ore bodies, comprising the steps of: s1, dividing the ore body edge tendency into a plurality of first sections 11 and second sections 12 which are arranged in a staggered mode, wherein the first sections 11 are divided in sequence according to the edge tendency: a first-step chamber 13, a second-step chamber 14 and a first-step chamber 13; the second segment 12 is divided in order along the trend: a second-step chamber 14, a first-step chamber 13 and a second-step chamber 14; s2, arranging a mining standard roadway 15 at the bottom of each step-mining room 13 and the bottom of each step-mining room 14 along the trend;
s3, firstly, stoping the first-step chamber 13, wherein in the first section 11, any stoping roadway 15 positioned at the bottom of the second-step chamber 14 serves as a stoping main line of the first-step chamber 13 in the first section 11; in the second section 12, the standard drift 15 located at the bottom of the two-step room 14 serves as a standard main for the one-step room 13 in the second section 12; the first-step chamber 13 and the second-step chamber 14 adopt a trackless process to remove ores;
s4, performing cementing filling on the mining room 13 in the step, wherein cement mortar cementing filling/concrete cementing filling can be selected during specific operation; s5, stoping the two-step chamber 14, forming a standard mining roadway 15 at the bottom of any two adjacent two-step chambers 14, and taking the standard mining roadway 15 as a standard mining trunk line of the two-step chambers 14; and S6, filling the non-cemented tailings and the waste rocks of the two-step chamber 14.
In S3, a first ore removal route 21 that communicates with all the mining roadways 15 in the first section 11 is opened in the first section 11, and a second ore removal route 22 that communicates with all the mining roadways 15 in the second section 12 is opened in the second section 12.
In S5, a third ore removal route 23 is provided below the first ore removal route 21 and the second ore removal route 22, and both end portions of the third ore removal route 23 are respectively located directly below the two adjacent two-step chamber 14.
When the two-step chamber 14 is stoped, the end part of the third ore removal route 23 is tunneled upwards to the bottom of the two-step chamber 14, a shallow hole is arranged at the head of the roof, the roof is constructed after a medium-length hole is arranged in a trench tunnel, the two-step chamber 14 adopts bottom vertical fan-shaped medium-length hole bottom-drawing + upper vertical deep hole blasting, the shallow hole is blasted while blasting at the corresponding position of the two-step chamber 14, and the head of the roof is expanded and brushed into the inclined chute 4 in the trench tunnel length direction.
In S3, ore is removed by the aid of a bottom structure of the trench, the ore removal route and the mining main line in the first step 13, and ore is removed by the aid of a bottom structure of the trench, the inclined chute 4, the ore removal route and the mining main line in the second step 14.
In the present embodiment, the right-most excavation roadway 15 in the first section 11 serves as the main excavation line of the one-step room 13 in the first section 11 for ore removal, the excavation roadway 15 in the middle in the second section 12 serves as the main excavation line of the one-step room 13 in the second section 12 for ore removal, and both ends of the third ore removal route 23 are respectively located directly below the main excavation line. The mining standard roadway 15 adopts a fan-shaped medium-length hole bottom-drawing mode, a V-shaped trench form is formed at the bottom, and vertical deep hole blasting ore falling is carried out on ores in a chamber.
After the recovery of the first-step chamber 13 is completed, two ends of the third ore removal access 23 are communicated with the standard mining roadway 15 at the bottom of the second step, and the standard mining roadways 15 of one group of the third ore removal access 23 can be used as standard mining main lines of the two second-step chambers 14 for ore removal. The mining alignment main line is repeatedly utilized, so that the bottom structures of the first-step chamber 13 and the second-step chamber 14 are mutually connected, part of mining and cutting engineering quantity is saved, trackless equipment is used, the operation efficiency is improved, the stoping period is shortened, and the mining of slightly inclined ore bodies is more economical.
By the method, the stoping of the bottom of the slightly inclined ore body stope is well controlled, and the loss and dilution of ores are reduced. The stoping and filling of the first-step chamber 13 do not affect the rock drilling and ore drawing of the second-step chamber 14, and each chamber has independence, so that the safety in the mining work is improved.
Example 2
Step one, the length of the chamber 13 is 50-60m and the width is 12-15m; secondly, the length of the chamber 14 is 50-60m and the width is 15-20m along the direction, the mining roadways 15 in the first section 11 are positioned on the same horizontal plane, and the distance between the adjacent mining roadways 15 is 13-17m; the mining roadways 15 in the second section 12 are on the same horizontal plane, the distance between the adjacent mining roadways 15 is 13-15m, and the distance between the first ore removal access 21 and the second ore removal access 22 is 10-12m.
Referring to fig. 2, on the basis of example 1, by taking a copper ore as an example and combining with the detail description of a stoping process, the thickness of an ore body of a part of the copper ore is about 15-25m, and an inclination angle of less than 5 ° belongs to a slightly inclined ore body, and in consideration of rock conditions, stoping is performed by adopting a segmented open stoping subsequent filling method, which specifically comprises the following steps:
(1) The ore body is segmented according to S1 along the inclination, the one-step chamber 13 and the two-step chamber 14 are 50m long along the trend, the one-step chamber 13 is 12m wide, and the two-step chamber 14 is 15m wide. First ore removal access 21 and second ore removal access 22 are arranged between the bottom trenches at intervals of 12m along the trend, mining standard tunnels 15 are arranged at the bottoms of the first step chamber 13 and the second step chamber 14, mining standard tunnels 15 are arranged at intervals of 13m between adjacent mining standard tunnels 15, and mining standard projects are arranged at the tops of all the mining standard tunnels and used for rock drilling and filling.
(2) Stoping the first-step chamber 13, wherein in the first section 11, any stoping standard roadway 15 positioned at the bottom of the second-step chamber 14 serves as a rock drilling roadway and a stoping standard trunk line of the first-step chamber 13 in the first section 11; in the second section 12, the standard gallery 15 at the bottom of the two-step chamber 14 serves as a rock drilling gallery and a standard mining trunk line of the one-step chamber 13 in the second section 12;
a quasi-mining roadway 15 at the bottom of the ore room 13 in one step adopts fan-shaped medium-length hole bottoming and vertical deep hole blasting ore falling, the bottom of the quasi-mining roadway forms a V-shaped trench form, a trackless carry scraper runs ore removal in a quasi-mining trunk line and an ore removal route, after the ore removal is finished, a filling retaining wall is arranged in the ore removal route, the vacant area of the ore room 13 in one step is cemented and filled, and then the stoping of the ore room 14 in two steps is carried out.
In this embodiment, the inclination angle of the trench type bottom structure side wall is not lower than the natural repose angle of the rock and is more than 42 degrees, and the inclination angle of the side formed by trench bottom-pulling in this embodiment is 45 degrees.
(3) Secondly, stoping the two-step chamber 14, forming a stoping standard tunnel 15 at the middle bottom 8m of any two adjacent two-step chambers 14, arranging third ore removal access ways 23 at intervals of 12m along the direction of the two sides, respectively locating two end parts of the third ore removal access ways 23 at the lower parts of trench floors of the two adjacent two-step chambers 14, and taking the stoping standard tunnel 15 as a rock drilling channel and a stoping standard trunk line of the two-step chambers 14; and ore removal is carried out by utilizing the mining roadway 15 and the third ore removal access 23 at the position 8m below the ore body.
Namely: after the first-step chamber 13 is filled, an raise is tunneled upwards to the bottom trench bottom plate of the second-step chamber 14 at the end part of the third ore removal inlet 23, holes are punched upwards around the lower ore removal inlet to two sides of the chamber trench bottom plate and are blasted (detonator section advanced stope ore dropping) together with the vertical parallel deep holes of the stope to form the inclined chute 4 serving as the bottom structure of the second-step chamber 14 for ore removal. And step two, ore removal of the ore room 14 firstly separates out the waste rocks leaked from the bottom of the inclined chute 4 until the waste rocks are discharged to the ores, and normal ore removal operation is carried out in a stope. And after the recovery is finished, constructing a retaining wall on the ore removal route, and performing non-cemented filling on the retaining wall.
It is easy to understand that in this embodiment, the cross section of the mining roadway 15, the trench and the ore removal access road is three-arch, the width and the height are 4m and 3.6m, and the one-step chamber 13 and the two-step chamber 14 are all removed by the trackless carry scraper.
It can be seen that in this embodiment, through different bottom receiving structures, the trackless equipment is used to pour the ores in the first-step chamber 13 and the second-step chamber 14 into the ore pass 5 and put the ores into the middle-section haulage roadway, so that the dilution rate and the loss rate are reduced, the mining-cutting ratio of kiloton is reduced to 5.2m/kt, the production efficiency is improved, and low-dilution-loss and high-efficiency production is realized.
In the method, two adjacent two-step chamber 14 can share the standard roadway 15 of a group of third ore removal access 23 as a standard main mining line, and the standard main mining line of the one-step chamber 13 serves as a rock drilling roadway in the stoping work of the two-step chamber 14, so that one roadway is multipurpose; the bottom structures of the two-step chamber are independent and connected.
The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A continuous mining method suitable for micro-dipping medium to thick ore bodies, characterized by comprising the following steps:
s1, dividing an ore body into a plurality of first sections (11) and second sections (12) which are arranged in a staggered mode along the inclination, wherein the first sections (11) are sequentially divided along the inclination: a one-step chamber (13), a two-step chamber (14) and a one-step chamber (13); the second segment (12) is divided in order along the trend: the two-step chamber (14), the one-step chamber (13) and the two-step chamber (14) are arranged in a staggered mode, so that the one-step chamber (13) and the two-step chamber (14) are formed;
s2, arranging a mining standard roadway (15) at the bottom of each step of the chamber (13) and the bottom of each step of the chamber (14) along the direction of the roadway;
s3, firstly stoping the first-step chamber (13), wherein in the first section (11), any stoping roadway (15) positioned at the bottom of the second-step chamber (14) serves as a stoping main line of the first-step chamber (13) in the first section (11);
in the second section (12), the mining level roadway (15) at the bottom of the two-step chamber (14) serves as a mining level main line of the one-step chamber (13) in the second section (12);
the first step chamber (13) and the second step chamber (14) adopt trackless technology for ore removal;
s4, cementing and filling the ore room (13) in the step;
s5, stoping the two-step chamber (14), and then opening a standard mining roadway (15) at the bottom of any two adjacent two-step chambers (14), wherein the standard mining roadway (15) is used as a standard mining trunk line of the two-step chambers (14);
s6, filling the non-cemented tailings and the waste rocks of the two-step chamber (14).
2. Method for continuous mining of micro-dipping medium to thick ore bodies according to claim 1, characterised in that in S3 a first ore removal access (21) is provided in the first section (11) communicating with all the preparation lanes (15) in the first section (11), and in the second section (12) a second ore removal access (22) is provided communicating with all the preparation lanes (15) in the second section (12).
3. The continuous mining method for micro-dipping moderately thick-to-thick ore bodies as claimed in claim 2, characterized in that in S5, a third ore removal route (23) is opened under the first ore removal route (21) and the second ore removal route (22), and both ends of the third ore removal route (23) are respectively located right under the adjacent two-step ore rooms (14).
4. The continuous mining method suitable for the slightly inclined medium-thick ore bodies according to claim 3, characterized in that when the two-step ore room (14) is mined, a raise is dug upwards to the bottom of the two-step ore room (14) at the end part of the third ore removal access (23), a shallow hole is arranged at the head of the raise, the raise is constructed after a medium-deep hole is arranged in a trench roadway, the two-step ore room (14) adopts bottom vertical fan-shaped medium-deep hole bottoming and upper vertical deep hole blasting, the shallow hole is blasted while blasting at the corresponding position of the two-step ore room (14), and the head of the raise is expanded and brushed into the inclined chute (4) in the trench roadway length direction.
5. A continuous mining method suitable for micro-dipping moderately thick to thick ore bodies according to claim 4, characterized in that the ore room (13) in one step adopts the bottom structure of trench + ore removal route + main mining line to remove ore, and the ore room (14) in two steps adopts the bottom structure of trackless ore removal of trench + inclined chute (4) + ore removal route + main mining line to remove ore.
6. The continuous mining method for micro-dipping medium to thick ore bodies according to claim 1, characterized in that the one-step chamber (13) is 50-60m long and 12-15m wide along the strike; the length of the two-step chamber (14) is 50-60m and the width is 15-20m along the strike direction.
7. Method of continuous mining suitable for micro-dipping medium to thick ore bodies according to claim 2, characterized in that the mining roadways (15) in the first section (11) are on the same horizontal plane and the distance between adjacent mining roadways (15) is 13-17m; the mining roadway (15) in the second section (12) is positioned on the same horizontal plane, and the distance between the adjacent mining roadways (15) is 13-15m.
8. Method of continuous mining suitable for micro-dipping medium to thick ore bodies according to claim 7, characterized in that the distance between the first ore removal route (21) and the second ore removal route (22) is 10-12m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310123893.8A CN115977641A (en) | 2023-02-16 | 2023-02-16 | Continuous mining method suitable for micro-inclined medium-thickness to thick ore body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310123893.8A CN115977641A (en) | 2023-02-16 | 2023-02-16 | Continuous mining method suitable for micro-inclined medium-thickness to thick ore body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115977641A true CN115977641A (en) | 2023-04-18 |
Family
ID=85958285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310123893.8A Pending CN115977641A (en) | 2023-02-16 | 2023-02-16 | Continuous mining method suitable for micro-inclined medium-thickness to thick ore body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115977641A (en) |
-
2023
- 2023-02-16 CN CN202310123893.8A patent/CN115977641A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110644997B (en) | Sublevel rock drilling and sublevel mining subsequent filling mining method | |
| CN102619513B (en) | Room and pillar type medium-length hole filling mining method using bottom ore withdrawal structures simultaneously arranged in original rock | |
| CN101105129B (en) | Mining environment reconstructed continuous mining afterwards filling mining method | |
| CN106121648A (en) | Sublevel open stoping chassis route ore drawing subsequent filling mining method | |
| CN110295908B (en) | Mining method for gentle dip medium-thickness ore body in fluctuating sectional roadway | |
| CN111677509B (en) | Cooperative mining method for inclined thick and large ore body | |
| CN110331978B (en) | Environment reconstruction segmented medium-length hole subsequent filling mining method | |
| CN111894591B (en) | Collaborative mining method for inclined thick and large ore body panel and panel interval column | |
| CN112177613B (en) | Sector medium-diameter deep hole mining process for steeply inclined medium-thickness ore body | |
| CN106121643A (en) | The reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling | |
| CN110905517B (en) | Continuous mining method suitable for high and middle sections | |
| CN112031770B (en) | Novel mining method suitable for multi-stope synchronous mining of thick and large ore body | |
| CN210134930U (en) | Subregion accuse top structure in advance suitable for mining of gentle slope broken deposit | |
| CN108625855B (en) | Mining method under filling body | |
| CN110644996B (en) | Open stope subsequent filling mining method suitable for gently inclined medium-thickness ore body | |
| CN111594170A (en) | Method for stoping residual ore body on top and bottom plates of gently inclined ore body | |
| CN112796759B (en) | Mechanical mining and waste rock filling method for inclined thin vein | |
| CN111005724B (en) | Method for stoping residual ores on top and bottom plates of slowly-inclined goaf | |
| CN110259450B (en) | Mining method for inclined-steeply inclined medium-thickness ore body | |
| CN115977641A (en) | Continuous mining method suitable for micro-inclined medium-thickness to thick ore body | |
| CN115075820A (en) | Mining method for steeply inclined thin ore body without cutting well | |
| CN110905510B (en) | Strip and block stoping method for horizontal ore pillar of metal ore body | |
| CN110388210B (en) | Stope structure arrangement mode suitable for combined sectional mining of slowly-inclined medium-thickness ore body | |
| CN108397196B (en) | A kind of gently inclined orebody open air trestle mining methods based on lattice guest's artificial ore pillar | |
| CN108708725B (en) | safe and efficient gentle dip ore body mining method |
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 |