CN103075189A - Thin-wall hollow structure artificial point pillar upward horizontal layered cemented tailing filling method - Google Patents
Thin-wall hollow structure artificial point pillar upward horizontal layered cemented tailing filling method Download PDFInfo
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- CN103075189A CN103075189A CN201310052798XA CN201310052798A CN103075189A CN 103075189 A CN103075189 A CN 103075189A CN 201310052798X A CN201310052798X A CN 201310052798XA CN 201310052798 A CN201310052798 A CN 201310052798A CN 103075189 A CN103075189 A CN 103075189A
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Abstract
The invention discloses a thin-wall hollow structure artificial point pillar upward horizontal layered cemented tailing filling method. An ore point pillar is substituted with an artificial point pillar, so that the mining loss rate is reduced, the ore resource and the timber are saved, the mining operation safety is improved, the mining cycle period is shortened, the labor productivity is improved, and the ore recovery rate can be improved by 8-12 percent. The method is particularly suitable for mining noble metals with more complex ore deposit geological condition, engineering geological condition and hydrogeological condition or high-grade mines or mines in resource crisis.
Description
Technical field
The present invention relates to a kind of supporting placement method.
Background technology
Existing some pillar upward horizontal slice tailing cemented filling mining methods, it is the ore point post (mainly being with regard to rock point post or poor value point post) that in the stope mining process, reserves rule, in order to supporting stope top board, be aided with in case of necessity anchor net or long anchor cable supporting.The shortcoming of the method is: the mining technology more complicated, stope is long circulation timei, mining efficiency is not high, ore point post is permanent loss, loss late is about 8～10%, particularly for noble metal nugget and high-grade nugget, so high loss late can affect the economic benefit of s Mining Enterprises to a great extent.
In order to change this situation, many methods have also been adopted in some mine, as adopt artificial partition wall, artificial sill pillar, pile up or spray the techniques such as concrete point post, mineral resource recovery rate and stope mining safety have been improved to a certain extent, but there is complicated construction technique, the shortcoming such as execution conditions are bad, and digging efficient still can not be satisfactory.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of thin wall hollow structure artificial point pillar upward horizontal slice tailings glue placement method, by artificial some post replacement reservation ore point post, improve ore recovery rate, and easy construction, engineering quantity is little, cost is lower, and is safe and reliable.
The process program that the present invention adopts is:
A kind of thin wall hollow structure artificial point pillar upward horizontal slice tailings glue placement method is characterized in that carrying out according to following steps:
The first step perpendicular to orebody trend Mining tunnel, on the base plate in mining roadway, delimited the position of several artificial some posts;
Second step, a gas mould is installed in the position of the artificial point of each on base plate post, and fills in the gas mould and make it to expand behind the air with certain pressure upright, and can bear certain pressure, guarantees after it is sprayed certain thickness concrete indeformable; The expand bottom of upright gas mould contacts with base plate, and the top contacts with the end face of mining roadway, and the gas mould that expands upright relies on expansion force to be fastened onto between the end face of base plate and mining roadway;
The 3rd step was added with the concrete of accelerating admixture at the jet surface of gas mould, and the final setting time of concrete is not more than 3 minutes; From gas mould bottom, spray around the gas mould from bottom to top during sprayed construction, discharge rate strengthens gradually in the spray gun elevation process, until connect the top, thickness was substantially even about the gravity flow of dependence concrete made; Final thickness 200～300 ㎜ of concrete; And it is regional to reserve a non-injection concrete in gas mould bottom, so that the later stage takes out, reclaims the gas mould from this zone;
The 4th step, emit the air in the gas mould, extract the gas mould out from non-injection concrete zone;
In the 5th step, on the barrel of artificial some post, beat several filling mortar injection holes with hammer drill;
The 6th one, in mining roadway, carry out packing job, the mining roadway space that the filling mortar is full of comprise artificial some post inner space.
Good effect of the present invention is:
The present invention adopts artificial some post to substitute and reserves ore point post, has reduced the mining loss rate, has saved ore resource, save timber, improved the mining safety, shortened the mining cycle period, improved labor productivity, ore recovery rate can improve 8～12%.This method is particularly useful for exploiting the noble metal of geology of mineral deposit, engineering geology and hydrogeological conditions more complicated or the mine of high-grade mine or crisis of resource.
Description of drawings
Fig. 1 is the schematic diagram of job practices of the present invention.
The specific embodiment
In order to understand better and to implement, further specify the present invention below in conjunction with the drawings and specific embodiments.
Construction sequence of the present invention is as follows,
The first step is moved towards Mining tunnel 4 perpendicular to ore body 2, in recovery process according to geology of mineral deposit, engineering geology and hydrogeological conditions, on the base plate 3 in mining roadway 4, the parameters such as the position of the artificial point of design post, external diameter, wall thickness.
Second step, with the driving of mining roadway 4, on each the artificial some post position on the base plate 3, a gas mould is installed all, and fill in the gas mould make it to expand behind the air with certain pressure upright, and can bear certain pressure, guarantee after it is sprayed certain thickness concrete indeformable.The expand bottom of upright gas mould contacts with base plate 3, and the top contacts with the end face of mining roadway 4.The gas mould that expands upright relies on expansion force to be fastened onto between the end face of base plate 3 and mining roadway 4.
The 3rd step was added with the concrete of certain proportion accelerating admixture at the jet surface of gas mould, and the final setting time of concrete can not be greater than 3 minutes.From gas mould bottom, spray around the gas mould from bottom to top during sprayed construction, discharge rate strengthens gradually in the spray gun elevation process, until connect top (end face of mining roadway 4), thickness was substantially even about the gravity flow of dependence concrete made.Final thickness 200～300 ㎜ of concrete.Reserve a non-injection concrete zone in gas mould bottom, so that the later stage takes out, reclaims the gas mould from this zone.
Injection should be noted that when containing the concrete of accelerating admixture: requiring has rational water/binder ratio, and expulsion pressure is moderate, can not puncture the gas mould.
The 4th step, emit the air in the gas mould, extract the gas mould out from non-injection concrete zone, clear up, reclaim reusable.Form the large-diameter hollow cartridge type that is used for supporting stope top board at gas mould outer wall and manually put post 1, its height, wall thickness, diameter, concrete label, the data such as arrangement are looked site specific and are determined by the stope monolithic design.
In the 5th step, on the barrel of artificial some post 1, beat several filling mortar injection holes with hammer drill.
The 6th one, in mining roadway 4, carry out packing job, make the filling mortar be full of mining roadway 4 interior spaces, comprise artificial some post 1 inner space.
When near thin wall hollow structure artificial point post, carrying out bursting work, should take to avoid breaking the measure that hollow structure is manually put post, as noting gun muzzle direction, explosive payload, playing the big gun sequential scheduling.Mining machinery should be avoided hard collision.
Claims (1)
1. thin wall hollow structure artificial point pillar upward horizontal slice tailings glue placement method is characterized in that carrying out according to following steps:
The first step is moved towards Mining tunnel (4) perpendicular to ore body (2), on the base plate (3) in mining roadway (4), delimits the position of several artificial some posts (1);
Second step, a gas mould is installed in the position of the artificial some post of each on base plate (3) (1), and fill in the gas mould and make it to expand behind the air with certain pressure upright, and can bear certain pressure, guarantee after it is sprayed certain thickness concrete indeformable; The expand bottom of upright gas mould contacts with base plate (3), and the top contacts with the end face of mining roadway (4), and the gas mould that expands upright relies on expansion force to be fastened onto between the end face of base plate (3) and mining roadway (4);
The 3rd step was added with the concrete of accelerating admixture at the jet surface of gas mould, and the final setting time of concrete is not more than 3 minutes; From gas mould bottom, spray around the gas mould from bottom to top during sprayed construction, discharge rate strengthens gradually in the spray gun elevation process, until connect the top, thickness was substantially even about the gravity flow of dependence concrete made; Final thickness 200～300 ㎜ of concrete; And it is regional to reserve a non-injection concrete in gas mould bottom, so that the later stage takes out, reclaims the gas mould from this zone;
The 4th step, emit the air in the gas mould, extract the gas mould out from non-injection concrete zone;
In the 5th step, on the barrel of artificial some post (1), beat several filling mortar injection holes with hammer drill;
The 6th one, in mining roadway (4), carry out packing job, the filling mortar is full of comprise mining roadway (4) space of artificial some post (1) inner space.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310052798.XA CN103075189B (en) | 2013-02-19 | 2013-02-19 | Thin-wall hollow structure artificial point pillar upward horizontal layered cemented tailing filling method |
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| CN201310052798.XA CN103075189B (en) | 2013-02-19 | 2013-02-19 | Thin-wall hollow structure artificial point pillar upward horizontal layered cemented tailing filling method |
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| CN103075189A true CN103075189A (en) | 2013-05-01 |
| CN103075189B CN103075189B (en) | 2015-04-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557003A (en) * | 2013-08-07 | 2014-02-05 | 安徽大昌矿业集团有限公司 | Iron ore body safety pillar mining method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270672A (en) * | 2008-05-07 | 2008-09-24 | 中南大学 | Artificial ore pillar construction method |
| CN102011610A (en) * | 2010-10-28 | 2011-04-13 | 山东科技大学 | Supporting method of no-pillar mining mode for medium-thick coal seams |
| CN102392641A (en) * | 2011-08-02 | 2012-03-28 | 中钢矿业开发有限公司 | Point pillar type full-ore-deposit middle-section-free upward high-layering continuous propelling fill mining method |
| CN102434162A (en) * | 2011-12-27 | 2012-05-02 | 中矿金业股份有限公司 | Panel tailing filling mining method |
| CN202402073U (en) * | 2011-12-21 | 2012-08-29 | 昆明理工大学 | Filling air bag for mined out space |
-
2013
- 2013-02-19 CN CN201310052798.XA patent/CN103075189B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270672A (en) * | 2008-05-07 | 2008-09-24 | 中南大学 | Artificial ore pillar construction method |
| CN102011610A (en) * | 2010-10-28 | 2011-04-13 | 山东科技大学 | Supporting method of no-pillar mining mode for medium-thick coal seams |
| CN102392641A (en) * | 2011-08-02 | 2012-03-28 | 中钢矿业开发有限公司 | Point pillar type full-ore-deposit middle-section-free upward high-layering continuous propelling fill mining method |
| CN202402073U (en) * | 2011-12-21 | 2012-08-29 | 昆明理工大学 | Filling air bag for mined out space |
| CN102434162A (en) * | 2011-12-27 | 2012-05-02 | 中矿金业股份有限公司 | Panel tailing filling mining method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557003A (en) * | 2013-08-07 | 2014-02-05 | 安徽大昌矿业集团有限公司 | Iron ore body safety pillar mining method |
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| CN103075189B (en) | 2015-04-22 |
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