CN1963147A

CN1963147A - Mining method

Info

Publication number: CN1963147A
Application number: CN 200510104428
Authority: CN
Inventors: 王培福; 穆太升; 江国建; 汪宗文; 任凤玉; 周东良
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-07
Filing date: 2005-11-07
Publication date: 2007-05-16

Abstract

The mining method is used for recovery extraction for slanting or low angle slanting gold ore. Using footwall exogenous engineering, it divides the ore into several parts along the vertical direction. Recovery extraction works downwards, without leaving any pillars. The scraper utilizes exogenous engineering to get access to the extraction field. The surface-hole shrinkage method combines with phase caving method and works on the surface first to form fluting for explosive space and then proceeds phase caving method, which can effectively charge off lamination. Applying the latest draw theory, it differentiates ores and granite scrap and greatly reduces the loss rate and depletion rate for caving ore exploration method. Meanwhile, it dramatically increases the output capacity. It can be promoted for thick ore extraction in precious metal mines. The entire worker can operate within the driftway, with better security.

Description

A kind of mining methods

Technical field:

The present invention relates to a kind of mining methods, particularly the shallow-hole shrinkage mining method of the underground middle thickness orebody of gold mine combine with the sublevel caving mining method a kind of.

Background technology:

In traditional gold mine mining technology, the mining methods of inclination middle thickness orebody are based on filling method, and the avalanche mining methods obtain using comparatively widely at metal mine and non-metal mine with low-cost, efficient, safety.But it is higher that its maximum defective is ore loss ratio and the rate of dilution, causes mineral resources to waste in a large number, simultaneously aspect the processing processing of ore because the barren rock mixed volume is causing many unnecessary wastes more greatly.The big basic reason of sublevel caving method ore losses dilution in the past, be to adopt the cut off grade ore drawing mode, a large amount of doping have taken place going out mine mouth in ore deposit, rock, and downside does not have rational recycling engineering, that is to say it is the movement law of stope structure and ore drawing mode incompatibility avalanche ore deposit rock, especially gently inclined orebody adopts existing avalanche mining methods, and the loss late and the rate of dilution are high.The professional person that digs up mine has both at home and abroad for many years done a large amount of research work, obtained certain achievement, but the ore loss ratio and the rate of dilution is solved preferably at the end still.Especially caved stopes is not adopted in the noble metal mine substantially.Shallow hole shrinkage method can only with the narrower high-dipping of ore body firm ore body, tilt or gently inclined medium thick orebody because the comparatively broken situation of armor rock on being can't adopt shrinkage method.Because gold ore-body is complicated and changeable, horsestone is more between ore body, no matter is that avalanche method or shrinkage method all can't better solve this difficult problem of rejecting horsestone always.Though filling method comparatively is fit to tilt or slow oblique middle thickness orebody, its maximum shortcoming is that operating efficiency is low and cost of production is higher, exists personnel relatively poor relatively in the longer safety of stope activity duration simultaneously.

The invention task:

The objective of the invention is to problem, the mining methods that provide a kind of low loss and dilution, efficient, safety, low cost, the novel hole shrinkage method that rises that applicability is strong to combine for the gold mine middle thickness orebody with the avalanche method at above existence.

The object of the present invention is achieved like this: equipment, People's Bank of China, ore removal etc. are adopted accurate engineering and are arranged in the ore body lower wall, and the stope route can be arranged along ore body or vertical ore body according to the occurrence status of ore body.The section of opening inclined shaft of ore body lower wall construction or ramp (2) between two stage casings utilize uncouple (3) that inclined shaft or each slice drift of ramp (4) are linked.Utilize slice drift that nugget vertically is divided into three to five segmentations., undercut along the ore body construction then and cut formation explosion space, lane (6) to ore body construction stope route (5) from slice drift (4).Be the back production location is divided into shallow exploiting field (7) and caved area (8) with difference in the past, can utilize shallow exploiting field (7) and caved area (8) to cut apart a large amount of horsestones occurring, effectively horsestone is rejected.The utilization cutting lane that undercuts adopts shallow-hole shrinkage to be split into cutting room at last dish in shallow exploiting field.Employing from caving, the stope structure and the low dilution ore drawing mode that reclaim route be set, make stope structure and ore drawing mode, the common inbreak rule of rock mass and the flow behavior of avalanche ore deposit rock of adapting to, just can overcome the big drawback of sublevel caving method without sill pillar ore losses dilution, it is simple to give full play to this method stope structure simultaneously, it is less to adopt accurate engineering quantity, the high and low advantage of cost of production of mechanization degree, thus form low poor damage sublevel caving method.

Optimum implementation of the present invention is: rock drilling equipment and scraper equipment such as (11) enters operation in the route lane by stage casing inclined shaft or ramp (2) through slice drift (4).The exploiting field is divided into shallow exploiting field (7) and caved area (8), and the shallow exploiting field of dish utilizes the cutting lane (6) that undercuts to adopt shallow hole shrinkage method to carry out back production on ore body.The lower wall caved area adopts the avalanche method to carry out back production, downward piecemeal back production, not pillar; Avalanche method stopping sequence adopts drawing back, the medium-length hole ore deposit that falls.The ore of avalanche utilizes stope route (5) ore removal.The only operation in gallery of personnel's equipment.

The present invention compared with prior art has the following advantages:

Owing to adopt the segmentation shallow-hole shrinkage back production mode that combines with the avalanche method from top to bottom, and adopting accurate engineering is arranged in outside the arteries and veins, so these mining methods have the following advantages: ore losses is little, the ore deposit rate of dilution is low, can effectively reject horsestone and safety is good, the production efficiency height, accident potential is few, cost is low, and is applied widely.

Fig. 1 is the vertical perspective view of concrete structure of the present invention.

Fig. 2 is a concrete structure vertical view of the present invention.

Fig. 3 is a concrete structure sectional drawing of the present invention.

1, transport lane 2, stage casing inclined shaft or ramp 3, uncouple in the stage casing

4, slice drift 5 stope routes 6, undercut the cutting lane

7, shallow exploiting field 8, caved area 9, barren rock drop shaft

10, mine chute 11, scraper

Embodiment:

The section of opening inclined shaft of construction or ramp (2) between per two stage casings utilize uncouple (3) that inclined shaft or each slice drift of ramp (4) are linked., undercut along the ore body construction then and cut formation explosion space, lane (6) to ore body construction stope route (5) from slice drift.Ore removal adopts scraper (11), and scraper equipment such as (11) enters slice drift (4) by stage casing inclined shaft or ramp (2), and ore removal in the stope route, ore or barren rock are respectively charged into barren rock drop shaft (9) or mine chute (10).The exploiting field is divided into shallow exploiting field (7) and caved area (8), and the shallow exploiting field of dish utilizes the cutting lane (6) that undercuts to adopt shallow hole shrinkage method to carry out back production on ore body.The lower wall caved area adopts the avalanche method to carry out back production, downward piecemeal back production, not pillar; Avalanche method stopping sequence adopts drawing back, the medium-length hole ore deposit that falls.The ore of avalanche utilizes stope route (5) ore removal.The only operation in gallery of personnel's equipment.

Can adopt the operation simultaneously of many routes, increase stope ore removal ability.The dead zone does not need to handle after the stope end of job, fills the dead zone voluntarily by the slump of last armor rock.

Claims

1, a kind of mining methods is characterized in that, nugget vertically is divided into plurality of sections carries out back production.Scraper equipment such as (11) enters slice drift (4) operation by stage casing inclined shaft or ramp (2).The ore body back production adopts shallow hole shrinkage method to combine with sublevel caving method, and the exploiting field is divided into shallow exploiting field (7) and caved area (8), utilizes shallow adopting to be split into grooving and to carry out avalanche, downward piecemeal back production, and pillar not, the ore of avalanche utilizes stope route (5) ore removal.

2, according to the claim 1 described outer engineering of ore body arteries and veins of utilizing nugget vertically is divided into plurality of sections back production from top to bottom.

3, combine with the avalanche method according to claim 1 described employing shallow hole shrinkage method, utilize the explosion space of the grooving of shallow hole shrinkage method formation as the avalanche method.