CN104481542A - Method for solving wind current disorder during diagonal stoping of upper and lower middle empty fields of thick and large ore body - Google Patents

Method for solving wind current disorder during diagonal stoping of upper and lower middle empty fields of thick and large ore body Download PDF

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Publication number
CN104481542A
CN104481542A CN201410678789.6A CN201410678789A CN104481542A CN 104481542 A CN104481542 A CN 104481542A CN 201410678789 A CN201410678789 A CN 201410678789A CN 104481542 A CN104481542 A CN 104481542A
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stage casing
distinguished
admirable
wind
stope
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CN104481542B (en
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刘武团
周健强
菅玉荣
张亭
张海磊
刘财林
高忠
张睿
高志荣
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Northwest Research Institute of Mining and Metallurgy
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Northwest Research Institute of Mining and Metallurgy
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • 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

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Remote Sensing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Ventilation (AREA)

Abstract

The invention discloses a method for solving the problem of wind current disorder during diagonal stoping of upper and lower middle empty fields of a thick and large ore body, which comprises the following steps: the first step is as follows: determining a series wind flow route; the second step is that: determining a wind pressure comparison point, selecting two points on the series wind flow line determined in the first step, and determining the specific wind pressures of the two points; the third step: determining measures and equipment for solving the wind flow disorder, and selecting fan energization regulation and/or wind window resistance-increasing regulation according to the magnitude of the wind pressure difference between the two points in the second step; the fourth step: determining the implementation position of a fan or a wind window; and fifthly, selecting the type of the selected equipment and installing the equipment. The ventilation of two stopes at the opposite angles of the upper and lower adjacent middle section spaces is not interfered with each other, the ventilation of the respective ventilation systems is normal, and the stoping work is efficient and safe.

Description

Solve big thick ore body upper and lower stage casing barnyard to the method for distinguished and admirable disorder during angie type back production
Technical field
The invention belongs to mining technique field, relate to the solution of the distinguished and admirable disorder of stope ventilation, especially relate to a kind of nonferrous metal mine thick large inclined orebody upper and lower stage casing barnyard to the solution of distinguished and admirable disorder during angie type back production.
Background technology
Distinguished and admirable disorder is one of FAQs of Ventilation System existence, main manifestations is stage casing with stage casing, distinguished and admirablely between stope with stope connects, especially, when big thick ore body upper and lower stage casing barnyard is to angie type back production, easily there is the fresh distinguished and admirable phenomenon of connecting of distinguished and admirable and diagonal angle, the upper stage casing stope of the dirt of lower stage casing stope.
When more than orebody thickness 80m, more than 60 °, inclination angle and the firm metal mine of country rock adopt openstope method exploitation, in the middle part of orebody trend, horizontal ore pillar is reserved in each stage casing, and vertical ore body reserves studding, stope is divided with this, the similar sphere of movements for the elephants type of stope layout pattern in final each stage casing, as shown in Figure 1.For ensureing the production capacity of stope, avoid rock mass stress redistribution, two stopes successively on the diagonal of back production simultaneously.Stope ventilation route is: stage main haulage roadway-ventilation pedestrain raise-drilling drift-stope-large lane of returnairshaft-return air.Be in the level of handing-over at the bottom of the top of two stopes of diagonal angle, space pattern in upper and lower stage casing, stope dirty wind in lower stage casing is connected with the fresh distinguished and admirable easy of stope in upper stage casing, stage casing Stope face contaminated or lower stage casing stope return air can be caused to be obstructed, thus cause upper and lower two stope mining face-airings not smooth, not only personnel health is on the hazard, and mining activity is obstructed.
Dig the Special back air channel of necessary amount and return air raise, or adopt effective Wind current decontamination plant, in some situation with connect to a certain extent to the dirty wind of the distinguished and admirable disorder of solution and play a role.But when big thick ore body upper and lower stage casing barnyard is to angie type back production, the not only mining cost increase of cutting Special back air channel and return air raise, mining cycle stretch-out, and also the utilization rate of this project is not high; Adopt Wind current decontamination plant fundamentally can not change wind direction.
Summary of the invention
The object of this invention is to provide a kind of big thick ore body upper and lower stage casing barnyard that solves to the method for distinguished and admirable disorder during angie type back production, during to solve big thick ore body upper and lower stage casing diagonal angle stope mining, dirty wind and fresh distinguished and admirable because of blast not etc., and produce the problem of distinguished and admirable disorder, it also avoid the problems such as high cost, poor efficiency and the on-the-spot adaptive capacity difference of digging Special back air channel and return air raise or adopt the technical measures such as Wind current decontamination plant to bring simultaneously.
The technical solution adopted in the present invention is: a kind of big thick ore body upper and lower stage casing barnyard that solves is to the method for distinguished and admirable disorder during angie type back production, ore body is big thick ore body, adopt openstope method, the stope layout pattern in each stage casing is sphere of movements for the elephants type, two stopes in the upper and lower stage casing of back production sphere of movements for the elephants type diagonal simultaneously, its feature comprises the steps.
The first step: determine distinguished and admirable disorderly circuit.When staff finds that blasting fume exists or detects that fresh wind is polluted by dirty wind by instrument in the stope of upper stage casing, just can determine that this stope exists distinguished and admirable disorderly problem.Detect the dirty wind blast in lower stage casing, the fresh distinguished and admirable blast in upper stage casing, if the dirty wind blast in lower stage casing is greater than the fresh distinguished and admirable blast in stage casing, then there will be the fresh wind direction flowing in stage casing on the dirty wind direction in lower stage casing; Otherwise, then there will be the dirty wind wind direction flowing in fresh distinguished and admirable downward stage casing, stage casing.By comparing above, a distinguished and admirable disorderly circuit just can be found.
Second step: determine joint.The same distinguished and admirable circuit can determining two other stope of matrix pattern according to the first step, the intersection point of these two circuits is joint.
3rd step: measure wind pressure value size.The same distinguished and admirable circuit in both sides of the joint that second step is determined chooses 2 points, measures the wind pressure value of point-to-point transmission.
4th step: determine the measure solving distinguished and admirable disorder.According to the leeway size of the 3rd step point-to-point transmission, select air regulator or blower fan to increase resistance and regulate.
5th step: the enforcing location determining air regulator or blower fan.Disturbance wind Flow Line is chosen a bit, this some requirement is implementing measure easy construction, does not affect normal ore removal hauling operation.
6th step: the enforcement of measure and construction.Calculate according to flowing resistance law, the wind pressure value fixed with the 3rd pacing is checked, and determines implementing measure, then carries out constructing on the position that the 5th step is determined.
Innovative point of the present invention: the ventilation of two stopes in diagonal angle, upper and lower stage casing no longer interferes with each other, and respective ventilation routes is smooth and easy, and actual mining normally carries out; Circuit Ex post can not affect normal ore removal hauling operation, can ensure the production capacity of stope; Also solve the problem of the distinguished and admirable disorder of two other diagonal angle stope of sphere of movements for the elephants type simultaneously.
Accompanying drawing explanation
Fig. 1 is that schematic diagram arranged by upper and lower stage casing sphere of movements for the elephants type stope;
Fig. 2 is that upper and lower stage casing barnyard is to stope ventilation schematic diagram during angie type back production;
Midcourse phase main haulage roadway under 1-in figure, ventilation pedestrain raise in stage casing under 2-, stage casing drilling drift under 3-, stage casing returnairshaft under 4-, the large lane of 5-return air, the upper midcourse phase main haulage roadway of 6-, 7-upper stage casing ventilation pedestrain raise, 8-upper stage casing drilling drift, 9-upper stage casing returnairshaft, the horizontal ore pillar of 10-.
Detailed description of the invention
Below in conjunction with accompanying drawing and exemplifying embodiment, the invention will be further described.
Body of digging up mine be big thick ore body, adopt openstope method, the stope layout pattern in each stage casing is sphere of movements for the elephants type, simultaneously two stopes in the upper and lower stage casing of back production sphere of movements for the elephants type diagonal.No. 2, the lower stage casing distinguished and admirable circuit of stope is: fresh distinguished and admirable through drilling drift 3 → stope → large lane 5 of returnairshaft 4 → return air, lower stage casing, lower midcourse phase main haulage roadway 1 → lower stage casing ventilation pedestrain raise 2 → lower stage casing; No. 1, the upper stage casing distinguished and admirable circuit of stope is: fresh distinguished and admirable not shown through drilling drift 8 → stope → upper large lane of returnairshaft 9(1 stope return air, stage casing, upper midcourse phase main haulage roadway 6 → upper stage casing ventilation pedestrain raise 7 → upper stage casing).Because the lower stage casing returnairshaft 4 of No. 2 stopes communicates with No. 1 stope main haulage roadway, in the lower stage casing returnairshaft 4 of No. 2 stopes dirty wind easily in " ten " font ore pillar tunnel flow into No. 1 stope, that pollutes in No. 1 stope is fresh distinguished and admirable.
The first step: determine distinguished and admirable disorderly circuit.When staff finds that blasting fume exists or detects that fresh wind is polluted by dirty wind by instrument in the stope of upper stage casing, just can determine that this stope exists distinguished and admirable disorderly problem.Detect the dirty wind blast in lower stage casing, the fresh distinguished and admirable blast in upper stage casing, if the dirty wind blast in lower stage casing is greater than the fresh distinguished and admirable blast in stage casing, then there will be the fresh wind direction flowing in stage casing on the dirty wind direction in lower stage casing; Otherwise, then there will be the dirty wind wind direction flowing in fresh distinguished and admirable downward stage casing, stage casing.By comparing above, a distinguished and admirable disorderly circuit just can be found.
As shown in Figure 2, after distinguished and admirable disorderly problem occurs, determine that distinguished and admirable disorderly circuit is: A → B → O → C → D.
Second step: determine joint.The same distinguished and admirable circuit can determining two other stope of matrix pattern according to the first step, the intersection point of these two circuits is joint.
3rd step: measure wind pressure value size.The same distinguished and admirable circuit in both sides of the joint determined at second step chooses 2 points, and as shown in Figure 2,2 that determine is No. 2 stope return air raise 4 pithead positions and No. 1 stope ventilation pedestrain raise 7 bottom hole location, measures the wind pressure value of A, D point-to-point transmission.
4th step: determine the measure solving distinguished and admirable disorder.According to the leeway size of the 3rd step point-to-point transmission, select air regulator or blower fan to increase resistance and regulate.According to on-the-spot actual and in conjunction with associated specifications, consider that arranging air regulator or booster and the distinguished and admirable rightabout of dirty wind on distinguished and admirable disorderly circuit arranges to realize increasing to hinder, the two selects one.The leeway that the foundation hindered is the point-to-point transmission that the 3rd step is determined is increased with air regulator or booster.Select booster as the measure regulating blast between A, D in this problem at 2.
5th step: the enforcing location determining blower fan.Disturbance wind Flow Line is chosen a bit, this some requirement is implementing measure easy construction, does not affect normal ore removal hauling operation.
The appropriate location of enforcing location on the left of O point of the blower fan determined in this figure.The direction of blower fan air-out is changed when two stope minings at another diagonal angle.
6th step: the enforcement of measure and construction.Calculate according to flowing resistance law, determine implementing measure, then carry out constructing on the position that the 5th step is determined.
Under the condition of distinguished and admirable disorder, according to Mine Ventilation Resistances law, the leeway acted between A, D is:
H 1 = R*Q 1 2 （1）
In formula: H 1leeway between-A, D, Pa;
Q 1air quantity between-A, D, m 3/ s;
Windage between R-A, D, NS 2/ m 8;
When setting up the resistance of an XR at O point, then have:
H= (XR+R)*Q 1 2 （2）
(1) formula is substituted into (2) Shi Ke get:
H/(X+1)=H 1 （3）
Or establish a forced blower fan at O point, its blast size is the pressure reduction of H/ (X+1), O point is H, and air quantity is Q, then have:
H+ H/(X+1) = (XR+R)*Q 2 （4）
Due to H=R*Q 2, substitute into (4) formula abbreviation and obtain: X 2+ X-1=0, solves X=0.618, and (4) formula of substitution obtains:
H+ H/1.618 = 1.618R*Q 2（5）
In formula: leeway during H-distinguished and admirable disorder between A, D 2, Pa;
Air quantity required between Q-A, D 2, m 3/ s;
Windage during R-distinguished and admirable disorder between A, D 2, NS 2/ m 8;
The windage that 0.618 R-O point increases.
According to (5) formula, according to windage when not taking measures, air quantity, the wind pressure value of booster can be calculated, then select the model of booster in conjunction with Air Quantity Required.If determine in the 4th step to select air regulator, the area of regulation wind window can be determined according to 1.618 R, according to the enforcing location of the 5th step determination air regulator simultaneously.

Claims (3)

1. one kind solves big thick ore body upper and lower stage casing barnyard to the method for distinguished and admirable disorder during angie type back production, ore body is big thick ore body, adopt openstope method, the stope layout pattern in each stage casing is sphere of movements for the elephants type, two stopes in the upper and lower stage casing of back production sphere of movements for the elephants type diagonal simultaneously, its feature comprises the steps:
The first step: determine distinguished and admirable disorderly circuit, when staff finds that blasting fume exists or detects that fresh wind is polluted by dirty wind by instrument in the stope of upper stage casing, just can determine that this stope exists distinguished and admirable disorderly problem;
Detect the dirty wind blast in lower stage casing, the fresh distinguished and admirable blast in upper stage casing, if the dirty wind blast in lower stage casing is greater than the fresh distinguished and admirable blast in stage casing, then there will be the fresh wind direction flowing in stage casing on the dirty wind direction in lower stage casing; Otherwise, then there will be the dirty wind wind direction flowing in fresh distinguished and admirable downward stage casing, stage casing;
By comparing above, a distinguished and admirable disorderly circuit just can be found;
Second step: determine joint, can determine the distinguished and admirable circuit of two other stope of matrix pattern equally according to the first step, the intersection point of these two circuits is joint;
3rd step: measure wind pressure value size, the same distinguished and admirable circuit in both sides of the joint that second step is determined chooses 2 points, measures the wind pressure value of point-to-point transmission;
4th step: determine the measure solving distinguished and admirable disorder, according to the leeway size of the 3rd step point-to-point transmission, selects air regulator or blower fan to increase resistance and regulates;
5th step: the enforcing location determining air regulator or blower fan, disturbance wind Flow Line is chosen a bit, and this some requirement is implementing measure easy construction, does not affect normal ore removal hauling operation;
6th step: the enforcement of measure and construction; Calculate according to flowing resistance law, determine implementing measure, then carry out constructing on the position that the 5th step is determined.
2. the big thick ore body upper and lower stage casing barnyard that solves as claimed in claim 1 is to the method for distinguished and admirable disorder during angie type back production, it is characterized in that the 3rd step comparison point selects lower stage casing stope return air raise pithead position and diagonal angle, upper stage casing stope downcast bottom hole location.
3. the as claimed in claim 1 big thick ore body upper and lower stage casing barnyard that solves is to the method for distinguished and admirable disorder during angie type back production, it is characterized in that the intersection of enforcing location in cross tunnel of the 5th step blower fan or air regulator, i.e. the joint determined of second step.
CN201410678789.6A 2014-11-24 2014-11-24 Method for solving wind current disorder during diagonal stoping of upper and lower middle empty fields of thick and large ore body Active CN104481542B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2642721C1 (en) * 2017-03-06 2018-01-25 Акционерное общество "ВНИИ Галургии" (АО "ВНИИ Галургии") Method of processing of a cutting site
CN110905512A (en) * 2019-11-22 2020-03-24 西北矿冶研究院 Open stope mining method for gently inclined medium-thickness ore body

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US4512610A (en) * 1983-05-27 1985-04-23 Mobil Oil Corporation Mining system
CN101469612A (en) * 2007-12-26 2009-07-01 孙世超 Mining method for segmented metallic ore
CN101566062A (en) * 2009-06-07 2009-10-28 姜仁义 Caving mining method cap comminution granulation

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2642721C1 (en) * 2017-03-06 2018-01-25 Акционерное общество "ВНИИ Галургии" (АО "ВНИИ Галургии") Method of processing of a cutting site
CN110905512A (en) * 2019-11-22 2020-03-24 西北矿冶研究院 Open stope mining method for gently inclined medium-thickness ore body
CN110905512B (en) * 2019-11-22 2021-11-16 西北矿冶研究院 Open stope mining method for gently inclined medium-thickness ore body

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