CN106223956A - Medium-length hole courtyard mining afterwards filling method - Google Patents

Abstract

The invention discloses a filling method after medium and deep hole raise mining. The ore block is arranged along the ore body direction and divided into stages in terms of vertical height; the two ends of the ore block are arranged with a mining quasi-raise, and the bottom of the ore block is arranged with a flat-bottom ore-out structure. Raise drilling rig chambers are arranged on the upper part of the block, and the raised wells are drilled by the raised drilling rig; the rock drilling and blasting work platform is lifted by the raising system of the raised drilling rig, and the down-the-hole drilling rig drills horizontal parallel or circular medium-deep holes from both sides of the raised well, and concentrates Rock drilling, staged blasting, concentrated ore extraction, and subsequent filling. This method is mainly suitable for steeply inclined thin to medium-thick ore bodies. It overcomes the problems existing in the ore retention method, the segmented open field method or the upward layered filling mining method. It has the advantages of less mining and cutting engineering and a high degree of stope mechanization. , high production efficiency, large production capacity, no need for personnel to enter the stope operation, and good safety conditions.

Description

Subsequent filling method in medium and deep hole raise mining

technical field

The invention belongs to the field of mining, and in particular relates to a method of filling after medium and deep hole raise mining.

Background technique

For steeply inclined thin ore bodies to medium-thick ore bodies, the ore retention method, segmented open field method or upward layered filling method are commonly used for mining. Among them, the mine-retaining method has a large stope exposure area, low degree of mechanization, high labor intensity, and unsafe operation; the segmented open field method has disadvantages such as a large cutting ratio and a high rate of ore loss and dilution in the stope; according to layered filling During the mining method, due to the many operation cycles and the complex mining process, the production efficiency is low, the labor intensity is high, the mining cost is high, and the mine production capacity is small. Moreover, the above-mentioned mining methods all need to excavate a quasi-raised shaft, but the traditional method of digging a quasi-raised shaft has slow driving speed, low work efficiency and poor safety.

Contents of the invention

The technical problem to be solved by the present invention is to provide a medium and deep hole raise mining subsequent filling method with safe operation, high degree of mechanization, low labor intensity, large production capacity and short mining time. Mining of steeply inclined thin to medium-thick ore bodies with large production capacity and high efficiency.

In order to solve the above-mentioned technical problems, the method of filling the medium and deep hole raise mining provided by the present invention adopts the following technical scheme: the ore block is arranged along the ore body direction, and is divided into stages on the vertical height; A flat-bottom mining structure is arranged at the bottom, and a raise drilling rig chamber is arranged on the upper part of the ore block. The raise drilling rig is used to drill the mining quasi-raise; the raising system of the raise drilling rig is used to lift the rock drilling and blasting working platform; The ring-shaped medium-deep blast hole is drilled intensively, blasted in stages, and the ore is extracted in a concentrated manner, and then filled.

The ore body is steeply inclined thin to medium thick ore body.

The subsequent filling method of the above-mentioned medium and deep hole raise mining is carried out according to the following steps:

a) The ore blocks are arranged along the ore body trend, and are divided into ore rooms and ore pillars, and the ore pillars include inter-pillars and top pillars;

b) Arrange the exit level roadway along the direction of the ore body, arrange the bottom roadway along the bottom of the ore body, and use the ore loading route to connect the exit level roadway and the bottom roadway; arrange mining pits at both ends of the ore block, and arrange a patio on the upper part of the ore block Drilling rig chamber, use raise drilling rig to drill and drill quasi-raise;

c) After the completion of the standard well, use the raising system of the well drilling rig to lower the down-the-hole drilling rig and the working platform of the down-the-hole drilling rig to the working surface; the down-the-hole drilling rig drills horizontal parallel or circular medium-depth blastholes from both sides of the well;

d) After expanding the bottom roadway and raising the roof to form a 3-6m high bottom space, use the lifting system of the well drilling rig to lower the working platform and the charge device to the charge working surface along the patio, and use the charge device to fill the bulk Explosives are blasted in batches from bottom to top, and the number of blasting rows is determined according to needs. The ore under blasting is shoveled out from the ore loading route by the scraper, and sent to the nearby chute along the mine exit roadway. In order to protect the patio, no explosives were charged in the section 4m away from the hole, and pillars about 3m wide were left on both sides of the patio after blasting.

e) After the ore is recovered from the mine, the ore pillar is recovered according to the conditions of the adjacent stope, and the goaf is finally treated by filling method.

In the step (a), the length of the ore block is 40-50m, the width is the thickness of the ore body, the stage height is 50-80m, the width of the inter-pillar is 6-8m, and the thickness of the top pillar is 3-6m.

In step (b), the distance between the ore exit level roadway and the footwall of the ore body is 8-10m, and the ore loading approach distance is 6-8m.

In the step (c), the hole diameter of the blast hole is 50-70mm, the hole depth is 20-25m, the row spacing of the blast hole is 1.0-2.0m, and the blast hole spacing is 0.8-2.5m.

Aiming at the deficiencies that exist when steeply inclined thin to medium-thick ore bodies are mined by the ore retention method, the segmented open field method or the upward layered filling mining method, the inventor has established a method of medium and deep hole raise mining followed by filling. There is technology, the advantage of the present invention is:

<1>The present invention carries out mining at the full height of the stage, and arranges a mining raise at both ends of the ore block, arranges a flat-bottomed ore-out structure at the bottom of the ore block, and arranges a raise drilling rig chamber at the upper part of the ore block, with a simple structure and a small amount of mining and cutting work.

<2> The present invention adopts the raised well drilling rig to drill the raised well, which has good well quality, good working conditions, safe production and high mechanization degree; The machine is loaded with medicine, workers do not need to enter the stope to work, the working conditions are good, the production is safe, and the degree of mechanization is high.

<3> The present invention adopts a raised well drilling rig to drill a raised well, which has a fast speed of forming a well and high work efficiency; it adopts medium and deep holes for falling ore, concentrated rock drilling, blasting in stages, and a scraper for mining, with large production capacity, high production efficiency and low cost .

Description of drawings

Fig. 1 is the reference diagram of applying the method of filling after medium and deep hole raise mining of the present invention.

Fig. 2 is a sectional view along line I-I in Fig. 1 .

In the picture: 1 mine exit level roadway, 2 ore loading approach road, 3 raised well connection road, 4 mining quasi-raised well, 5 bottom roadway, 6 raised well drilling rig chamber, 7 horizontal parallel medium-depth blast holes, 8 working platform, 9 rooms columns, 10 raise drilling rigs, 11 drill bits, 12 hoisting systems, 13 top columns, 14 down-the-hole drilling rigs, and 15 chargeers.

detailed description

The Basic Principle of the Subsequent Filling Method for Medium and Deep Hole Raise Mining in the Present Invention

For steeply inclined thin to medium-thick ore bodies, the ore blocks are arranged along the ore body trend and divided into stages in terms of vertical height; mining quasi-raises are arranged at both ends of the ore blocks, flat-bottomed mining structures are arranged at the bottom of the ore blocks, and a raise drilling rig is arranged at the upper part of the ore blocks Chamber; use raise drilling rigs to drill quasi-raised wells; use raise drilling rig lifting system to lift rock drilling and blasting work platforms; down-the-hole drilling rigs drill horizontal parallel or circular medium-deep holes from both sides of the raise well, concentrate rock drilling, and divide Blasting, concentrated ore extraction, and subsequent filling.

The specific operation steps of this method are as follows:

a) The ore blocks are arranged along the ore body trend, divided into mine rooms and ore pillars. The ore pillars include inter-pillars 9 and top pillars 13; 9 width 6-8m, top column 13 thickness 3-6m.

b) 8-10m away from the footwall of the ore body and arrange the exit tunnel 1 along the direction of the ore body, arrange the bottom tunnel 5 along the bottom of the ore body, use the ore loading approach 2 to connect the exit tunnel and the bottom tunnel, The distance between the roads is 6-8m; the mining pit 4 is arranged at both ends of the ore block, and the raised drilling rig chamber 6 is arranged on the upper part of the ore block, and the mining pit is drilled by the raised drilling rig 10; 3 China Unicom;

c) After the drilling of the raised well is completed, the drill bit 11 of the raised well drilling rig 10 is unloaded; the raising system 12 of the raised well drilling rig is used to connect the working platform 8, the down-the-hole drilling rig 14 is fixed on the working platform 8, and is lowered along the raised well 4 to the rock drilling face The down-the-hole drilling rig drills horizontal parallel (or circular) medium-depth blastholes 7 from both sides of the patio, with a diameter of 50-70mm, a hole depth of 20-25m, a row spacing of blastholes of 1.0-2.0m, and a spacing of blastholes of 0.8-2.5m ;

d) After expanding the bottom tunnel 5 and raising the roof to form a 3-6m high bottom space, the raising system 12 of the well drilling rig is connected to the working platform 8, and the charging device 15 is charged and fixed on the working platform 8, and lowered along the patio After arriving at the charge working face, use charge device 15 to load bulk explosives, determine the number of blasting rows each time according to needs, and blast in stages from bottom to top. Shovel it out and send it to the nearby chute along the mining level roadway 1. ;In order to protect the patio, the section 4m away from the orifice is not filled with explosives, leaving 3m wide ore pillars on both sides of the patio after blasting;

e) After mining in the mine house, recover the spacer column 9 and the top column 13 according to the conditions of the adjacent stope, and finally use the filling method to treat the goaf.

Claims (6)

1. a medium-length hole courtyard mining afterwards filling method, it is characterised in that: nugget is arranged along orebody trend, divides on vertical height For the stage；Nugget two ends are arranged and are adopted quasi-courtyard, and arranging flat ore removal structure bottom nugget, raise boring machine cave is arranged on nugget top Room, uses raise boring machine Drilling to adopt quasi-courtyard；Raise boring machine is used to promote system improving rock drilling, blasting work platform, hidden hole drilling Machine, from courtyard both sides Drilling horizontal parallel or annular medium-length hole big gun hole, concentrates rock drilling, blasting in groups, concentrating mining, afterwards filling.

Medium-length hole courtyard the most according to claim 1 mining afterwards filling method, it is characterised in that: described ore body is high-dipping It is as thin as middle thickness orebody.

Medium-length hole courtyard the most according to claim 1 mining afterwards filling method, it is characterised in that operate according to the following steps into OK:

A) nugget is arranged along orebody trend, is divided into mineral building and ore pillar, and ore pillar includes studding and fore-set；

B) arrange ore removal gallery along orebody trend, arrange bottom ore body and undercut tunnel, with Zhuan Kuang route UNICOM ore removal gallery with Undercut tunnel；Nugget two ends are arranged and are adopted quasi-courtyard, and raise boring machine chamber is arranged on nugget top, use raise boring machine Drilling to adopt quasi-sky Well；

C) adopt after quasi-courtyard completes, use raise boring machine to promote system and transfer down-the-hole drill and down-the-hole drill work platforms to operation Face；Down-the-hole drill is deep blasting hole from courtyard both sides Drilling horizontal parallel or annular；Concentration rock drilling, explosive loader powder charge, from bottom to top Blasting in groups, scraper ore removal；

D) after mineral building back production ore removal, according to adjacent stope situation recycling ore pillar, filling method is finally used to process goaf.

Medium-length hole courtyard the most according to claim 1 mining afterwards filling method, it is characterised in that step (a) chats block length 40-50m, a width of orebody thickness, level interval 50-80m, studding width 6-8m, fore-set thickness 3-6m.

Medium-length hole courtyard the most according to claim 1 mining afterwards filling method, it is characterised in that ore removal gallery in step (b) Away from ore body lower wall 8-10m, fill ore deposit drift interval 6-8m.

Medium-length hole courtyard the most according to claim 1 mining afterwards filling method, it is characterised in that aperture, big gun hole in step (c) For 50-70mm, hole depth 20-25m, big gun hole array pitch 1.0-2.0m, borehole spacing 0.8-2.5m.