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A method for protection and treatment of soluble solid potassium salt mine mining roadway

A potash ore soluble technology, applied in mining equipment, tunnels, tunnel linings, etc., can solve problems such as water accumulation, poor bonding between cement and potash ore, and concrete layer detachment

Active Publication Date: 2016-07-13
YUNNAN CHEM RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the solubility and moisture absorption of solid potash ore, coupled with high underground temperature and high humidity, the potash ore on the wall of the newly developed roadway will absorb moisture in the air and dissolve and collapse in a short period of time. Traditional concrete is directly used The cement and potash minerals are poorly cemented during support. After a certain period of time, the concrete layer on the surface of the roadway will loosen and fall off. Seriously affect roadway mining safety

Method used

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  • A method for protection and treatment of soluble solid potassium salt mine mining roadway
  • A method for protection and treatment of soluble solid potassium salt mine mining roadway
  • A method for protection and treatment of soluble solid potassium salt mine mining roadway

Examples

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Embodiment 1

[0022] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The described embodiments are only used for explaining the present invention, and should not be construed as limiting the present invention.

[0023] Refer below figure 1 The present invention is further described.

[0024] like figure 1 Shown, according to a kind of method of soluble solid sylvite mine roadway protective treatment of the present invention, first-selected brine and magnesia light burnt powder are mixed together and stirred into spraying material. For example, in an example of the present invention, the brine can be supplied to the stirring tank first and the supply rate can be adjusted, and the lightly burned magnesium oxide powder can be supplied from the silo to the stirring tank and the supply rate can be adjusted at the same time, and finally stirred into a spray material , optionally, the mass ratio of magnesium oxide, brin...

Embodiment 2

[0029] According to magnesia lightly burned powder, brine mother liquor and sodium hexametaphosphate Mass percentage ratio 49.0:50.0:1.0, under normal temperature conditions, add 735.0 grams of magnesium oxide lightly burned powder, 750.0 grams of brine mother liquor and 15.0 grams of sodium hexametaphosphate, stir and mix for 5 minutes, pour into a removable mold to form, the density is 1.50g / ml, maintained in the mine for 3 days, soaked in 2L of water, observed the water resistance of the test block at the following times, the results are shown in Table 2 below.

[0030] Table 2

[0031]

Embodiment 3

[0033] According to magnesia lightly burned powder, brine mother liquor and sodium hexametaphosphate Mass percentage ratio 25.0:74.5:0.5, under normal temperature conditions, add 350.0 grams of magnesium oxide lightly burned powder, 1043.0 grams of brine mother liquor and 7.0 grams of sodium hexametaphosphate, stir and mix for 5 minutes, pour into a removable mold to form, the density is 1.40g / ml, maintained in the mine for 3 days, soaked in 2L of water, observed the water resistance of the test block at the following times, the results are shown in Table 3 below.

[0034] table 3

[0035]

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PUM

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Abstract

The invention discloses a mining roadway protection method for soluble solid potassic salt ore, and belongs to the technical field of mining. In a mining roadway protection process for the soluble solid potassic salt ore, magnesium chloride mother liquor, a coagulating agent and a water-proof agent are blended and mixed into slurry, the slurry is sprayed onto the surface of a mining roadway as a protection material, and a uniform protection layer is formed on the surface of the potassic salt ore and is well contacted with the concrete supporting structure of the mining roadway, so that the surface of the mining roadway of the potassic salt ore can be prevented from being dissolved and collapsed by absorbing moisture in the air, and the construction of mining roadway concrete supporting engineering is facilitated. The process method relates to a largely-popularized production technology for ensuring the construction and safe production of mining roadways buried with underground soluble solid potassic salt ore.

Description

technical field [0001] The invention discloses a method for protecting and treating soluble solid potash ore mining tunnels, which belongs to the technical field of mining, and in particular relates to the waterproof treatment technology for buried soluble solid potash ore mining tunnels. Background technique [0002] At present, the solid potassium salt ore mainly comes from the evaporation of salt lake brine and underground mining. Underground mining of soluble potash deposits will inevitably form intricate tunnels. Due to the solubility and moisture absorption of solid potash ore, coupled with high underground temperature and high humidity, the potash ore on the wall of the newly developed roadway will absorb moisture in the air and dissolve and collapse in a short period of time. Traditional concrete is directly used The cement and potash minerals are poorly cemented during support. After a certain period of time, the concrete layer on the surface of the roadway will lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00
Inventor 曾波徐翔王国栋
Owner YUNNAN CHEM RES INST