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Wall type filled mining method applicable to flat-pitch phosphorus deposit

A technology of filling mining and gentle inclination, which is applied in the direction of filling, ground mining, mining equipment, etc., which can solve the problems of increasing the difficulty of filling material preparation and transportation, improve mining safety, reduce filling costs, and cut ratio small effect

Active Publication Date: 2018-12-21
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] 4. Disadvantages
[0039] 5. Disadvantages
Therefore, in order to meet the designed filling requirements, the concentration of the filling material must be increased, which increases the difficulty of filling material preparation and transportation.

Method used

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  • Wall type filled mining method applicable to flat-pitch phosphorus deposit
  • Wall type filled mining method applicable to flat-pitch phosphorus deposit
  • Wall type filled mining method applicable to flat-pitch phosphorus deposit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1, a wall filling mining method suitable for gently inclined phosphate rock deposits,

[0074] The mining sequence of this method is to start mining from one side of the panel in reverse order, and fill while mining.

[0075] The mining operation space is always supported by the filling body formed by filling and the unmined mine wall (ore body). The exposed area of ​​the roof of the empty area is small, which effectively improves the mining safety.

[0076] During mining, the panel is divided into mining rooms of the same or different widths, and the mining rooms are advanced in sequence.

[0077] The panel area is arranged along the ore body trend, and the mine houses in the panel area are arranged along the ore body tendency; the length L of the panel area is 200m-1km; the width D of the panel area is 200m-500m.

[0078] The top and bottom pillars are respectively set up and down the panel, and the width of the top and bottom pillars is 10m~20m; the mine ...

Embodiment 2

[0090] Embodiment 2, a wall filling mining method suitable for gently inclined phosphate rock deposits,

[0091] For example: A phosphate mine in Hubei adopts a wall-fill mining method.

[0092] 1. According to the occurrence of the ore deposit and the layout of the development system, the design parameters of the stope structure are as follows:

[0093] ⑴Panel width (along the direction): 400m

[0094] ⑵Panel length (along the direction): 200m

[0095] ⑶ Top column of the panel: 20m

[0096] ⑷ Panel bottom column: 20m

[0097] ⑸ Interval column: 20m

[0098] ⑹Width of security pillar in ramp: 20m

[0099] ⑺Width of mine room (pillar): 10m;

[0100] ⑻The length of mine house (pillar): 160m

[0101] 2. Accurate cutting

[0102] A middle roadway is arranged every 200m along the dipping direction of the ore body, and the length of the panel is 200m. A panel is arranged every 400m along the direction of the ore body. For each panel, a 20m wide top column is reserved at t...

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Abstract

The invention relates to a wall type filled mining method applicable to a flat-pitch phosphorus deposit. The method comprises the mining sequences: starting to carry out retrusive sequential mining from one side of a disk area, and carrying out filling while carrying out mining. During mining, a disk area can be divided into mineral buildings of the same or different widths, and the mineral buildings are mined through sequential propelling. According to the method, gob areas are treated by using a filling technology, the interior of the disk area has no need of reserving barrier pillars, the recovery rate of ores is increased, and the wasting of resources is greatly reduced. A mining working space is jointly supported by obturators and ribs, the exposed area of roofs of space areas is small, and the safety of mining is increased. The mining ratio is low, the amount of opening operations is small, the interior of one disk area only needs to construct one drilling drift, thus, the miningefficiency is increased, and the cost of mining is reduced. The strength requirements on the obturators are low, so that partial non-cemented filling can be adopted, the consumption of cementing materials is lowered, and the filling cost is reduced.

Description

technical field [0001] The invention relates to a mining method, in particular to a wall filling mining method suitable for gently inclined phosphate rock beds. Background technique [0002] Phosphate deposits are sedimentary deposits. In Yunnan, Guizhou, Sichuan, Hubei and other places in my country, there are a large number of gently inclined or horizontal phosphorus deposits. The continuity of these phosphate rock resources is good, and the scale of the mining area is relatively large. [0003] In the past, most of them were mined by open-pit mining method, forming a large number of goafs, which caused potential safety hazards to the ground. At the same time, the ore pillars left in the mining panel cannot be recovered, resulting in a large amount of waste of resources. [0004] Although some mines currently try to use the strip filling mining method for mining, this filling mining method has a large amount of mining and cutting work, and each mine room needs to constru...

Claims

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Application Information

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IPC IPC(8): E21C41/22E21F15/00
CPCE21C41/22E21F15/00
Inventor 牛明远刘大鹏
Owner BLUESTAR LEHIGH ENG INST CO LTD