Numerical simulation of pipeline erosion with paste filling

A paste filling and numerical simulation technology, which is used in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as difficulty in calculating the erosion wear rate of pipes, and difficulty in obtaining the instantaneous velocity of particles in the slurry. , to achieve the effect of extension and expansion

Active Publication Date: 2019-01-01
ANSTEEL GRP MINING CO LTD
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Problems solved by technology

It is difficult to obtain the instantaneous velocity of particles in the slurry by existing calculation or experimental methods, so it is difficult to calculate the erosion and wear rate of pipelines

Method used

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  • Numerical simulation of pipeline erosion with paste filling
  • Numerical simulation of pipeline erosion with paste filling
  • Numerical simulation of pipeline erosion with paste filling

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Experimental program
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Embodiment Construction

[0071] Specific embodiments of the present invention are further described below.

[0072] The invention mainly utilizes indoor physical simulation technology and mathematical method, according to the rheological characteristics of the paste filling slurry, realizes the influence on the flow characteristics of the paste filling slurry pipeline in the numerical simulation of the pipeline, and further realizes the effect on the wear characteristics of the pipeline in the simulation. influences. First, the density of the paste filling slurry is obtained by density measurement; the relationship between shear and fluid viscosity is obtained by fitting the rheological test results; then, the flow mathematical model of the target paste filling slurry is established according to the equation of motion of hydrodynamics, Solve the mathematical model of paste-filling slurry movement, and obtain the velocity and pressure variation law of paste-filling paste in the process of pipeline flow...

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Abstract

The invention belongs to the technical field of paste filling, in particular to a numerical simulation method of paste filling pipeline erosion, which is characterized by comprising the following steps: 1) carrying out density test on a target paste filling slurry, and obtaining slurry density under conditions of different concentrations and different cement-sand ratios according to test data; 2)carrying out rheological test on that target paste filling slurry, and fitting the relationship between the viscosity of the target paste filling slurry and the shear rate; 3) establishing a mathematical model of that pipeline flow of the target paste filling slurry according to the hydrodynamic motion equation, and obtaining the variation law of the velocity and the pressure of the paste fillingslurry in the pipeline flow process. The invention can more accurately predict pipeline erosion under different conditions, and provides a theoretical basis for maintenance of the filling pipeline andmonitoring of erosion damage. The magnetic numerical simulation method is quantitative, operable, extensible and expandable.

Description

technical field [0001] The invention belongs to the technical field of paste filling, and in particular relates to a numerical simulation method for the erosion of paste filling pipelines. Background technique [0002] Compared with traditional filling slurry, paste filling slurry has three characteristics of non-segregation, non-dehydration and non-stratification; the paste has uniform strength and high top connection rate, which can effectively control the movement of rock formations and prevent surface collapse; Short knot time, less consumption of materials, economical and reasonable; high utilization rate of tailings filled with paste, reducing mine waste discharge. Therefore, paste filling is a technology hotspot and a new development trend in the global mining field. [0003] In the process of paste filling, erosion wear is one of the important reasons for pipeline failure, and it is also a common phenomenon in the process of paste transportation. The failure of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 窦国语郭客吴迪王忠红戴若丁牛文杰刘峰
Owner ANSTEEL GRP MINING CO LTD
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