CN109630119A - Anti-collapse supporting method for ultra-broken thin ore shallow hole shrinkage stope - Google Patents
Anti-collapse supporting method for ultra-broken thin ore shallow hole shrinkage stope Download PDFInfo
- Publication number
- CN109630119A CN109630119A CN201811368541.4A CN201811368541A CN109630119A CN 109630119 A CN109630119 A CN 109630119A CN 201811368541 A CN201811368541 A CN 201811368541A CN 109630119 A CN109630119 A CN 109630119A
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- China
- Prior art keywords
- stope
- ore
- steel
- fitting
- built
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
-
- 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
Abstract
The invention discloses an anti-collapse supporting method for an extremely-broken thin ore shallow hole shrinkage stope, which comprises the following steps of: a. processing an I-steel embedded part (1) according to the width of a stope, processing according to the actual width of the stope, wherein the length of the I-steel is = the actual space width of the stope plus the depth of two embedded part cut holes (4), and constructing by using a small percussion drill according to the actual condition of a stope rock mass; b. pre-burying on the mined ore body (2), wherein the distance between every two adjacent parts is 2.8-3.5m multiplied by 2.8-3.5 m; c. caving the non-stoped ore body (5) on the working face (3) of the stope, and completely submerging the I-steel embedded part (1) in the ore breaking; d. and (3) circularly and repeatedly stoping to the top pillar in sequence for centralized ore drawing, wherein ore bodies in the stope move downwards successively, the I-steel embedded parts (1) support the ore body surrounding rock (6), and finally, I-steel supporting groups with the distance of 3m multiplied by 3m are formed in the stope to support and support the surrounding rock.
Description
Technical field
The present invention relates to stope Anticollapse supporting protection method and technology field, in particular to a kind of lean ore shallow-hole shrinkage stope smashed to pieces
Anticollapse supporting protection method.
Background technique
Small and medium-sized mines ore body is presented high-dipping and is crushed thin veiny by Ore-controlling Faults, ore body there are many domestic at present, and
And upper lower burrs country rock stability is poor.For the mine of the type, most general mining methods are shallow hole shrinkage method, but use shallow bore hole
Upper lower burrs are easy to collapse when shrinkage method concentrating mining, and dilution is caused to increase, or even dilution occur and reach 50-80% situation, serious shadow
Mine benefit is rung.When solving the problems, such as such at present, the method for mining by the way of filling is generally used, effectively prevent upper lower burrs to be caving bring tight
The poor damage of weight, but filling method is at high cost is that shallow bore hole is studied in France 1.5-1.8 times or so of cost, it is clear that this method can be fully solved
Problem is stated, but mine cost is greatly improved, it is extremely not applicable to meagre mine of getting a profit.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of lean ore shallow-hole shrinkage stope Anticollapse supporting protection method smashed to pieces, the party
Method is suitable for ore body presentation high-dipping and is crushed thin veiny, and the mine of upper lower burrs country rock stability difference, this method stay shallow bore hole
Mine method stope carries out stull supporting, and limitation roof and floor displacement prevents roof and floor from collapsing.
To achieve the goals above, technical solution of the present invention is specific as follows:
A kind of lean ore shallow-hole shrinkage stope Anticollapse supporting protection method smashed to pieces, comprising the following steps:
A. I-steel built-in fitting is processed according to Width of stope, is processed according to stope developed width, I-steel length=stope is real
Space width+two built-in fitting slotting hole depths in border creep into row construction using small impingement；
B. carried out on back production ore body pre-buried, built-in fitting spacing is all made of 2.8-3.5m × 2.8-3.5m spacing up and down；
C. the non-back production ore body of avalanche is carried out in Stope face, falls mine and flows or blow over and cover completely I-steel built-in fitting completely；
D. reciprocal back production is circuited sequentially to top pillar, carries out concentration ore drawing, ore body moves down successively in stope, and I-steel built-in fitting is to mine
Body country rock plays a supportive role, and it is 3m × 3m H-shaped steel supporting group that final stope, which forms spacing up and down, is supported to country rock
Supporting prevents breaking surrounding rock to be caving.
Wherein, in the step a, processing I-steel built-in fitting selects mine waste and old steel rail, selects the I-shaped of 16-22kg/m
Steel.
Wherein, in the step a, built-in fitting slotting hole depth is 50-100mm.
The beneficial effects of the present invention are:
1. the above disk silication griotte stability of the invention that effectively solves is poor and broken, cause to exploit using shallow hole shrinkage method because of upper disk
Country rock is mixed into the dilution to be formed, and this method obtains good economic benefits with respect to filling method advantage of lower cost.
2. the present invention is suitable for ore body by Ore-controlling Faults, ore body is presented high-dipping and is crushed thin veiny, and upper lower burrs
The small mine of country rock stability difference is worth the great promotion price in such mine, the method for protecting support, maximum feature relative cost
Cheap, easy construction is flexible, and support pattern is simple.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure.
Wherein, 1. I-steel built-in fitting, 2. back production ore bodies, 3. Stope faces, 4. built-in fitting keyholes, 5. do not return
Mining body, 6. ore body country rocks.
Specific embodiment
Specific embodiment is looked forward in Inner Mongol mine to illustrate with the present invention below
Embodiment 1
The mine belongs to built mine, is exploited using shallow hole shrinkage method, currently the 5th middle section of exploitation, mining depth 230m, at ore body
In the contact site of silication griotte and granite close to the side of silication griotte, ore body average thickness is 1m, and inclination angle is
65°.Since upper disk silication griotte stability is poor and broken, cause to be formed using shallow hole shrinkage method exploitation because upper armor rock is mixed into
The rate of dilution reach 80%, to mine stability production bring very big damage.It is anti-collapse using a kind of lean ore shallow-hole shrinkage stope smashed to pieces
Method for protecting support is supported supporting to face surrounding rock, prevents country rock slump, strives for window phase for shallow bore hole concentrating mining of studying in France, has
Effect solves ore removal depletion loss.
Such as Fig. 1, a kind of lean ore shallow-hole shrinkage stope Anticollapse supporting protection method smashed to pieces, comprising the following steps:
A. I-steel built-in fitting 1 is processed according to Width of stope, is processed according to stope developed width, I-steel length=stope
+ two 4 depth of built-in fitting keyhole of real space width creep into row construction using small impingement, wherein processing I-steel is pre-buried
Part 1 selects mine waste and old steel rail, selects the I-steel of 16kg/m, and 4 depth of built-in fitting keyhole is 50mm；
B. carried out on back production ore body 2 pre-buried, built-in fitting spacing is all made of 2.8m × 2.8m spacing up and down；
C. the non-back production ore body 5 of avalanche is carried out in Stope face 3, falls mine and flows or blow over and cover completely I-steel built-in fitting 1 completely；
D. reciprocal back production is circuited sequentially to top pillar, carries out concentration ore drawing, ore body moves down successively in stope, and I-steel built-in fitting 1 is right
Ore body country rock 6 plays a supportive role, and it is 3m × 3m H-shaped steel supporting group that final stope, which forms spacing up and down, props up country rock
Supporting is supportted, breaking surrounding rock is prevented to be caving, strives for window phase for shallow bore hole concentrating mining of studying in France, effectively solves ore removal depletion loss.
Embodiment 2
The mine belongs to built mine, is exploited using shallow hole shrinkage method, currently the 5th middle section of exploitation, mining depth 230m, at ore body
In the contact site of silication griotte and granite close to the side of silication griotte, ore body average thickness is 1m, and inclination angle is
70°.Since upper disk silication griotte stability is poor and broken, cause to be formed using shallow hole shrinkage method exploitation because upper armor rock is mixed into
The rate of dilution reach 80%, to mine stability production bring very big damage.It is anti-collapse using a kind of lean ore shallow-hole shrinkage stope smashed to pieces
Method for protecting support is supported supporting to face surrounding rock, prevents country rock slump, strives for window phase for shallow bore hole concentrating mining of studying in France, has
Effect solves ore removal depletion loss.
Such as Fig. 1, a kind of lean ore shallow-hole shrinkage stope Anticollapse supporting protection method smashed to pieces, comprising the following steps:
A. I-steel built-in fitting 1 is processed according to Width of stope, is processed according to stope developed width, I-steel length=stope
+ two 4 depth of built-in fitting keyhole of real space width creep into row construction using small impingement, wherein processing I-steel is pre-buried
Part 1 selects mine waste and old steel rail, selects the I-steel of 22kg/m, and 4 depth of built-in fitting keyhole is 100mm；
B. carried out on back production ore body 2 pre-buried, built-in fitting spacing is all made of 3.5m × 3.5m spacing up and down；
C. the non-back production ore body 5 of avalanche is carried out in Stope face 3, falls mine and flows or blow over and cover completely I-steel built-in fitting 1 completely；
D. reciprocal back production is circuited sequentially to top pillar, carries out concentration ore drawing, ore body moves down successively in stope, and I-steel built-in fitting 1 is right
Ore body country rock 6 plays a supportive role, and it is 3m × 3m H-shaped steel supporting group that final stope, which forms spacing up and down, props up country rock
Supporting is supportted, breaking surrounding rock is prevented to be caving, strives for window phase for shallow bore hole concentrating mining of studying in France, effectively solves ore removal depletion loss.
Claims (3)
1. a kind of lean ore shallow-hole shrinkage stope Anticollapse supporting protection method smashed to pieces, it is characterised in that: the following steps are included:
A. I-steel built-in fitting (1) is processed according to Width of stope, is processed according to stope developed width, I-steel length=adopt
Field real space+two built-in fitting keyhole (4) depth of width utilize small impingement to creep into row construction；
B. carried out on back production ore body (2) pre-buried, built-in fitting spacing is all made of between 2.8-3.5m × 2.8-3.5m up and down
Away from；
C. the non-back production ore body (5) of avalanche is carried out in Stope face (3), falls mine and flows or blow over and cover completely I-steel built-in fitting (1) completely；
D. reciprocal back production is circuited sequentially to top pillar, carries out concentration ore drawing, ore body moves down successively in stope, I-steel built-in fitting (1)
Play a supportive role to ore body country rock (6), it is 3m × 3m H-shaped steel supporting group that final stope, which forms spacing up and down, to country rock into
Row support supporting, prevents breaking surrounding rock to be caving.
2. a kind of lean ore shallow-hole shrinkage stope Anticollapse supporting protection method smashed to pieces according to claim 1, it is characterised in that: institute
It states in step a, processing I-steel built-in fitting (1) selects mine waste and old steel rail, selects the I-steel of 16-22kg/m.
3. a kind of lean ore shallow-hole shrinkage stope Anticollapse supporting protection method smashed to pieces according to claim 1 or 2, feature exist
In: in the step a, built-in fitting keyhole (4) depth is 50-100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368541.4A CN109630119A (en) | 2018-11-16 | 2018-11-16 | Anti-collapse supporting method for ultra-broken thin ore shallow hole shrinkage stope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368541.4A CN109630119A (en) | 2018-11-16 | 2018-11-16 | Anti-collapse supporting method for ultra-broken thin ore shallow hole shrinkage stope |
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| CN109630119A true CN109630119A (en) | 2019-04-16 |
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| CN201811368541.4A Pending CN109630119A (en) | 2018-11-16 | 2018-11-16 | Anti-collapse supporting method for ultra-broken thin ore shallow hole shrinkage stope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502705A (en) * | 2020-11-10 | 2021-03-16 | 西北矿冶研究院 | Anti-collapse supporting method for ultra-broken thin ore shallow hole shrinkage stope |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386766A (en) * | 2015-12-31 | 2016-03-09 | 西安建筑科技大学 | Reinforcement presplitting support method for extremely fractured hanging side roof mined by shallow hole ore leaving method |
| CN106761858A (en) * | 2017-01-09 | 2017-05-31 | 广东安元矿业勘察设计有限公司 | The supporting back production of stull open-stope method and filling new technology |
| CN107829739A (en) * | 2017-11-27 | 2018-03-23 | 西北矿冶研究院 | Mining method of steeply inclined thin vein |
-
2018
- 2018-11-16 CN CN201811368541.4A patent/CN109630119A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386766A (en) * | 2015-12-31 | 2016-03-09 | 西安建筑科技大学 | Reinforcement presplitting support method for extremely fractured hanging side roof mined by shallow hole ore leaving method |
| CN106761858A (en) * | 2017-01-09 | 2017-05-31 | 广东安元矿业勘察设计有限公司 | The supporting back production of stull open-stope method and filling new technology |
| CN107829739A (en) * | 2017-11-27 | 2018-03-23 | 西北矿冶研究院 | Mining method of steeply inclined thin vein |
Non-Patent Citations (1)
| Title |
|---|
| 郑敏: "横撑支柱留矿采矿法在某金矿的应用", 《南方金属》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502705A (en) * | 2020-11-10 | 2021-03-16 | 西北矿冶研究院 | Anti-collapse supporting method for ultra-broken thin ore shallow hole shrinkage stope |
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Application publication date: 20190416 |