Method for mining tin mine

A mining method and technology for tin ore, applied in the mining field, can solve the problems of single mining method, low ore column recovery rate, large loss, etc., and achieve the effect of wide application range and reducing ore loss rate

Inactive Publication Date: 2018-06-29
广西华洋矿源材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, tin mining in Guangxi mainly adopts joint development of vertical shaft-flat hole-blind inclined shaft, locomotive transportation, and ore loading by mine trucks. Mining methods include shallow eye ore retention and segmented open field method. The mining method is relatively simple and the recovery rate of ore pillars is low. , big loss

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of mining method of tin ore of the present embodiment comprises the following steps:

[0019] (1) Mining area layout: divide several mining areas along the ore body trend, divide 3 ore blocks in each mining area, and then divide the ore blocks into mine rooms and ore pillars, and the ore body is divided into middle sections in the height direction, Each middle section is further divided into sections; the middle section is 30m in height, and the section height is 15m; the ore block is 60m long and 30m wide; the mine house is 40m long and 10m wide; The circular diameter is 2m, the pillar spacing is 5m, the top pillar width is 1m, and the bottom pillar width is 2.5m.

[0020] (2) Mining and cutting: Arrange the stage transportation tunnels in the veins, and the mining tunnels are equipped with ore-drawing chutes, electric rake chambers, uphill, connecting tunnels and cutting tunnels.

[0021] (3) Mining: Propel from the center to both sides along the direction, re...

Embodiment 2

[0024] A kind of mining method of tin ore of the present embodiment comprises the following steps:

[0025] (1) Mining area layout: divide several mining areas along the ore body trend, divide 7 ore blocks in each mining area, and then divide the ore blocks into mine rooms and ore pillars, and the ore body is divided into middle sections in the height direction, Each middle section is further divided into sections; the middle section is 50m high, and the section height is 20m; the ore block is 80m long and 60m wide; the mine house is 60m long and 20m wide; the ore pillar is circular, and the ore pillar The circular diameter is 5m, the pillar spacing is 12m, the top pillar width is 3m, and the bottom pillar width is 7.5m.

[0026] (2) Mining and cutting: Arrange the stage transportation tunnels in the veins, and the mining tunnels are equipped with ore-drawing chutes, electric rake chambers, uphill, connecting tunnels and cutting tunnels.

[0027] (3) Mining: advance along the...

Embodiment 3

[0030] A kind of mining method of tin ore of the present embodiment comprises the following steps:

[0031] (1) Mining area layout: divide several mining areas along the ore body trend, divide 5 ore blocks in each mining area, and then divide the ore blocks into mine rooms and ore pillars, and divide the ore body into middle sections in the height direction, Each middle section is further divided into segments; the height of the middle section is 40m, and the height of the section is 18m; the length of the ore block is 70m, and the width is 50m; the length of the mine is 50m, and the width is 16m; The circular diameter is 3m, the pillar spacing is 8m, the top pillar width is 2m, and the bottom pillar width is 6m.

[0032] (2) Mining and cutting: Arrange the stage transportation tunnels in the veins, and the mining tunnels are equipped with ore-drawing chutes, electric rake chambers, uphill, connecting tunnels and cutting tunnels.

[0033] (3) Mining: Propel from the center to...

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Abstract

The invention discloses a method for mining tin mine, and relates to the technical field of mining. The method for mining tin mine comprises the steps of mining area layout, picking and cutting and recovery. The mining area layout is divided into a plurality of mining areas in an ore body direction, each mining area is divided into 3-7 ore blocks, and then the ore blocks are divided into mining houses and mining pillars, and the ore body is divided into middle sections in the height direction, and each middle section is subdivided into sections; the recovery step is carried out in the direction from the center to the sides, first returning to the mining houses and then back to the mining pillars. Thin ore bodies can be recovered, thick and extremely thick ore bodies can also be recovered.The method for mining tin mine has a wide application range, the ore recovery rate is larger than or equal to 88%, and the depletion rate is less than or equal to 10%, the ore loss rate is reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of mining, in particular to a tin ore mining method. 【Background technique】 [0002] my country is rich in tin ore, and the mining volume is about 5.304 million tons, including 3.052 million tons of underground mining and 2.252 million tons of open-pit mining, of which nearly half (1.036 million tons) of open-pit mining is placer. The pit mining of vein tin mines in my country mainly adopts the ore retention method, grid filling method, segmental empty field method, segmental caving method without bottom pillar, deep hole segmental blasting well excavation method, pipe slot bolting technology, etc. Guangxi is one of the main tin ore producing areas in my country. According to statistics, the main technical and economic indicators of tin mining in Guangxi nonferrous metal system are: ore grade 1.18%; mining loss rate 10.58%; ore dilution rate 11.23%; excavation ratio 423.06% m / 10,000 t; mining shift efficie...

Claims

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Application Information

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IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 李文康张宸宇欧西江
Owner 广西华洋矿源材料有限公司
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