A method of optimizing the ratio of filling materials

A filling and cement filling technology, which is applied in ratio control, instrument, control/regulating system, etc., can solve the problems of single consideration factor, influence model popularization and practicality, etc., achieve high prediction effect, reduce filling cost, and reduce experimental time. Effect

Active Publication Date: 2019-05-31
YUXI MINING +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0029] The influence of factors such as aggregate characteristics, concentration, and cement-sand ratio on the strength of the filling body has not been considered in this model. The single factor considered directly affects the promotion and practicality of the model in practice.

Method used

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  • A method of optimizing the ratio of filling materials
  • A method of optimizing the ratio of filling materials
  • A method of optimizing the ratio of filling materials

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Embodiment 1

[0072] A method for optimizing the ratio of fillers, comprising the steps of:

[0073] In step (1), the strength model of the cemented filling body includes formula (IV) and formula (V), as follows:

[0074]

[0075] Satisfy the slurry saturation condition at the same time:

[0076]

[0077] C / ρ 水泥 +M 骨 / ρ 骨 +W / 1000=1, formula (Ⅵ);

[0078] In formula (IV), formula (V) and formula (VI),

[0079] R ucs ——the uniaxial compressive strength of the cemented filling body, MPa;

[0080] φ——Aggregate packing density;

[0081] φ′——solid material packing density;

[0082] C V ——aggregate volume concentration per unit volume of slurry;

[0083] W / C - slurry water-cement mass ratio;

[0084] W is water volume, unit kg / m 3 ;

[0085] C is the amount of cement added, unit kg / m 3 ;

[0086] m 骨 Amount of aggregate added, unit kg / m 3 ;

[0087] ρ 骨 is aggregate density, unit kg / m 3 ;

[0088] ρ 水泥 is cement density, unit kg / m 3 ;

[0089] R c - cement grade, MPa...

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Abstract

The invention relates to a method for optimizing a filling material ratio, and belongs to the technical field of filling mining. The method comprises the following steps: optimizing and searching the filling material ratio based on an NSGA-II (Non-dominated Sorting Genetic Algorithm-II) algorithm thought; limiting a value range of each parameter of the filling material ratio; setting genetic parameters including a population size, a computing algebra, a crossover probability, a mutation probability and the like; setting a pre-set filling body strength value and optimally searching to obtain one non-dominated solution set containing a plurality of groups of solutions; finally, combining a mine conveying condition and selecting one group of solution, which meets filling body strength requirements of a mining method, meets mine conveying requirements and has the lowest cost, as filling material ratio parameters. By adopting the method provided by the invention, the number of times of experiments can be realized, and ratio parameters, which meet different filling body performance requirements, are rapidly recommended; meanwhile, the filling cost can be reduced. and the method is easy to popularize and apply.

Description

technical field [0001] The invention belongs to the technical field of filling and mining, and in particular relates to a method for optimizing the ratio of filling materials. Background technique [0002] For the filling mining method, whether mineral resources can be recovered to the maximum extent under the premise of ensuring safety depends on the quality of the filling slurry, and the quality of the filling slurry depends on the filling material and filling technical parameters. The quality of filling slurry includes the fluidity and strength of the slurry after consolidation, that is, the pipeline transport performance of the slurry and the strength of the filling body. Filling cost is a relatively high item in the ore cost of the mine. Under the premise of controlling the total filling cost, choosing a reasonable slurry ratio can effectively ensure the strength of the filling body and meet the mining process requirements. Therefore, determining a reasonable filling s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00G05D11/00C04B14/06C04B14/02
CPCC04B28/00G05D11/00C04B14/02C04B14/06
Inventor 孙宏生李广涛陈寅聪乔登攀严体
Owner YUXI MINING
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