Method for preventing landslides induced by inappropriate liquid injection intensity in in-situ leaching mining

Abstract

The invention discloses a method for preventing landslides induced by inappropriate liquid injection intensity in in-situ leaching mining. The method comprises the following steps: S1, drilling a liquid injection hole; S2, integrating an upper-layer mold bag (1), a lower-layer mold bag (2) and other parts into a whole; S3, injecting cement slurry from an inlet of a slurry injection pipe I, wherein the cement slurry enters the upper-layer mold bag (1), so that the slurry injection of the upper-layer mold bag (1) is realized; injecting cement slurry from an inlet of a slurry injection pipe II (6), wherein the cement slurry enters the lower-layer mold bag (2), so that the slurry injection of the lower-layer mold bag (2) is realized; S4, enabling a medicament to be inlet into a liquid injection pipe (4) from an inlet end of the liquid injection pipe (4), wherein the medicament enters a region formed by the upper-layer mold bag (1), the liquid injection hole (10) and the lower-layer mold bag (2), so that the injection of the medicament is realized. The method disclosed by the invention has the benefits that the medicament can be prevented from entering a non-ore body layer and a space between the non-ore body layer and an ore body layer, and due to the effect of an anchor rod, a slippage phenomenon generated between a clay layer and the ore body layer, as well as between the ore body layer and a bed rock is effectively avoided.

Description

technical field [0001] The invention relates to a method for preventing landslides induced by improper liquid injection strength in in-situ leaching mining. Background technique [0002] China is the country with the richest rare earth resources in the world, and is known as the "Kingdom of Rare Earths". The south is dominated by heavy rare earths, and the north is dominated by light rare earths. my country's rare earth minerals not only have large reserves, but also have many varieties and good quality, and unique deposit types, such as the Baiyun Obo sedimentary metamorphism-hydrothermal metasomatism Ni-rare earth deposit in Inner Mongolia and the weathered crust deposit in the Nanling area. [0003] Ion-adsorbed rare earth minerals exist in the form of "ionic phase" minerals and are adsorbed on the surface of "carrier" minerals. Most of the rare earths in rare earth minerals exist in the state of cations and are adsorbed on a certain mineral carrier. Such as adsorption o...

AI Technical Summary

Problems solved by technology

[0005] However, if the contact portion between the clay layer and the ore body layer, or the contact portion between the ore body layer and the bedrock, slips when the injection intensity (that is, the injection speed of the agent is too fast or the injection volume is too large), eventually Leading to landslides, the normal extraction of ionic rare earths in the ore cannot be carried out

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