Mass flow high density structure flow entire-tailing cemented filling technology

Abstract

The invention discloses a mass flow high density structure flow entire-tailing cemented filling technology comprising the following steps: allowing entire-tailing mortar, a cementing agent and proper amount of concentration adjusted water to enter a feed hopper through each material supply line, wherein said materials are then conveyed to a stirrer, and all ingredients of the filling material are fully evenly stirred so as to prepare the filling slurry with proper concentration and excellent fluidity, i.e., the structure flow status can be formed; allowing the filling slurry to finally enter a filling slurry discharge hopper, wherein the filling slurry can be conveyed to fill underground stope goaf through filling drill holes and an underground filling pipe network through self-flow, thus realizing large structure stope non-interrupted high density self-flow filling, wherein the sand-lime ratio can be adjusted according to filling body intensity requirements. The mass flow high density structure flow entire-tailing cemented filling technology can satisfy large structure stope, high preparation capability, high preparation precision, and high density structure flow entire-tailing colloid filling requirements, can reduce filling cost, so the goaf filling tailings final concentration can be above 70-73%; the filing body intensity structure is reasonable, thus enhancing stope back production safety, and providing large economic benefits and social benefits.

Description

Technical field: [0001] The invention relates to the field of goaf filling in underground mineral mining, in particular to a large-flow, high-concentration structural flow full tailings cemented filling process. Background technique: [0002] The use of tailings filling in mine goafs can not only improve resource utilization, prevent surface subsidence, but also reduce the discharge of solid waste to the surface. It is an effective way to make full use of tailings resources, realize land saving, energy saving, environmental protection, and waste utilization. [0003] Although the existing tailings cemented filling has high production capacity and good pipeline transportation characteristics, due to the use of a large amount of cement as the cement, the filling cost increases, and is limited by the concentration of the artesian pipeline, the ordinary tailings cemented filling slurry After filling the stope with a low concentration (generally below 65%), a large amount of wate...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the existing technical problems, the purpose of the present invention is to provide a large-flow high-concentration structural flow full tailings cemented filling process, which is used in large-structure stopes, with high production capacity, high proportioning accuracy, and high-concentration structured flow full tailings. The sand colloidal filling method solves the shortcomings of existing fillings such as insufficient pulping capacity, poor ratio control, and inability to self-flow filling at high concentrations

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