CN101329320A - High concentration ground paste filling collar experiment simulation system - Google Patents

Abstract

The invention provides a high-consistency slurry filling circular pipe test simulation system, comprising a parameter input unit which is used for inputting a plurality of parameters used for calculating the resistance coefficient of the pipeline on the filling slurry, a parameter selecting and setting unit which is used for selecting one parameter from a plurality of parameters and setting the parameter to be a variable and setting residual parameters to be constants at the same time, a calculating unit which is used for calculating the resistance coefficient of the slurry in a prearranged relationship by using a plurality of the parameters so as to obtain the relationship between the resistance coefficient of the slurry and the selected parameter, a memory unit which is used for memorizing the resistance coefficient calculated out by the calculating unit, and an output unit which is used for outputting the resistance coefficient of the slurry memorized in the memory unit. The high-consistency slurry filling circular pipe test simulation system of the invention has simple operation, can obtain the resistance coefficient of the filling slurry applied to the mines of variable conditions, thus providing design basis for designing the filling system, requires no circular pipe test on the mine practically, saves the cost and reduces the construction period of the mine.

Description

High concentration ground paste filling collar experiment simulation system

Technical field

The present invention relates to a kind of filling collar experiment simulation system, especially relate to a kind of high concentration ground paste filling collar experiment simulation system, this high concentration ground paste filling collar experiment simulation system can simulate carry out high concentration ground paste filling collar experiment and low cost, rapidly and efficiently, applied widely, thereby can substitute in the mine on the spot industrial filling collar experiment.

Background technology

In mining, in recovery process, can stay many goafs, these goafs can cause the surrounding rock body avalanche, thereby jeopardize normal exploitation.In addition, a large amount of extraction barren rock, particularly beneficiation tailing, being deposited in ground can pollute environment.

The method of mining by the way of filling is the barren rock with the extraction of opening a mine, beneficiation tailing particularly, form filling slurry and utilize the mining method of pipeline pack to the goaf, this method can improve the mineral rate of extraction, reduce the rate of dilution, make full use of existing resource, press and surface subsidence on control ground effectively, optimize characteristics such as mining area surrounding environment, thereby obtained using widely.

In the filling in mine technology of the filling slurry bashing that utilizes tailings etc. to form, filling collar experiment is an important preparation link.Because the mine is subjected to production practice; the casting resin source; cost; the influence of numerous factors such as environmental protection; the mine of filling; the component of mill tailings and grade composition vary; therefore must carry out endless tube in the mine on the spot and carry test; so that measure the fluid index and the rheology index of filling slurry; for example endless tube (pipeline) is to the resistance coefficient of filling slurry and the critical flow velocity of filling slurry; foundation as design filling endless tube; that is to say, be in order to obtain resistance coefficient and filling slurry the critical flow velocity pipeline in of filling pipeline to slip in the purpose of carrying out filling collar experiment on the mine.

According to the height of pulp quality concentration, ground paste filling can be divided into hydraulic stowing, high concentration ground paste filling and paste body filling, and wherein from the hydraulic stowing to the paste body filling, the mass concentration of filling slurry increases successively.

At present,, must on this specific mine, carry out full-scale high concentration ground paste filling collar experiment on the spot, that is, pipeline and equipment are set on the mine carry out high concentration ground paste filling collar experiment in order to be designed for the high concentration ground paste filling collar in specific mine.In addition, the industry high-concentration slip collar experiment that carries out in a specific mine obtains fluid index and rheology index and also only is only applicable to this specific mine.Therefore, for each specific mine, generally all to carry out industry high-concentration slip collar experiment at this mine.

But, carry out a full-scale industrial collar experiment on the spot, not only need to expend great amount of manpower and material resources and financial resources, and will experience the very long time, prolonged the construction period in mine.

Filling endless tube experiment with certain mining industry incorporated company is an example, from draw up a plan for, prepare, experiment, data gather with analyze, draw a series of link such as relevant data, spended time was above 1 year, the experiment fund that drops into is above 1,000,000 yuan, also expended great amount of manpower, and the data that this collar experiment obtains can't directly apply to other mines.

Summary of the invention

The objective of the invention is to propose a kind of high concentration ground paste filling collar experiment simulation system, utilize this high concentration ground paste filling collar experiment simulation system can be at the mine of various conditions, obtain the fluid parameter of high concentration ground paste filling slip, as the resistance coefficient of pipeline to filling slurry, foundation or reference as the design of filling in mine process system, reach the effect of real industry high-concentration ground paste filling collar experiment, substitute real industry high-concentration ground paste filling collar experiment thus, thereby save human and material resources and financial resources.

According to one embodiment of present invention, a kind of high concentration ground paste filling collar experiment simulation system is proposed, comprise: parameter input unit, be used to import a plurality of parameters, described a plurality of parameter comprises the solid material density in the volumetric concentration, flow velocity, filling slurry of filling slurry and the caliber of pipeline, in order to calculate the resistance coefficient of pipeline to filling slurry; Parameter is selected and setup unit, is used for selecting a parameter and being set at variable from a plurality of parameters of input, and be constant with all the other parameter settings simultaneously; Computing unit is used for utilizing described a plurality of calculation of parameter to go out the resistance coefficient of described slip with predetermined relational expression, so that obtain the resistance coefficient of described slip and the corresponding relation of a selected parameter, described predetermined relational expression is:

$i_j=i_0\{1+{106.9m}_t^{4.42}{\left(\frac{\mathrm{gD}({\mathrm{\γ}}_k-1)}{v^2\sqrt{\mathrm{Cx}}}\right)}^{1.78}\}$

Wherein:

i _jThe horizontal pipe of-unit length is to the resistance coefficient of filling slurry;

i ₀The horizontal pipe of-unit length is to the resistance coefficient of clear water;

m _tThe volumetric concentration of-filling slurry;

G-acceleration of gravity;

The caliber of D-pipeline;

The flow velocity of v-filling slurry;

The fixing sedimentation resistance coefficient of material particles in the Cx-filling slurry;

γ _kThe density of the solid material the in-filling slurry;

Storage unit is used to store the resistance coefficient of the slip that described computing unit calculates; And output unit, be used to export the resistance coefficient that is stored in the slip in the storage unit.

High concentration ground paste filling collar experiment simulation system according to second embodiment of the invention also comprises the step-length setup unit, is used to set the step-length that a selected parameter changes.

A third embodiment in accordance with the invention, the corresponding relation of the resistance coefficient of slip and a selected parameter is the form of curve map or form.

A fourth embodiment in accordance with the invention, described pipeline unit length is to the resistance coefficient i of clear water ₀Calculate by the following relation of plane formula of computing unit:

$i_0=\mathrm{\λ}\·\frac{v^2}{2\mathrm{gD}}$

Wherein:

The resistance coefficient of λ-clear water.

According to a fifth embodiment of the invention, the coefficient of frictional resistance of described clear water is calculated by the following relation of plane formula of computing unit:

$\mathrm{\λ}=\frac{K_a}{{(2\log \frac{D}{0.2224}+1.74)}^2}$

Wherein: K _a-pipeline quality of connection coefficient.

According to a sixth embodiment of the invention, the sedimentation resistance coefficient of solid material particle is calculated by the following relation of plane formula of computing unit:

$\mathrm{Cx}=1308\frac{({\mathrm{\γ}}_k-{\mathrm{\γ}}_0)d_p}{{\mathrm{\ω}}^2}$

Wherein ω is calculated by the following relation of plane formula of computing unit:

ω=k ∑ ω _iα _iAnd

If $\mathrm{\Δ}=\sqrt[3]{0.0001\÷({\mathrm{\γ}}_k-1)},$

When di＜0.3 Δ, ${\mathrm{\ω}}_i={5450d}_i^2({\mathrm{\γ}}_k-1);$

When 0.3 Δ≤di＜Δ, ${\mathrm{\ω}}_i={123.04d}_i^{1.1}{({\mathrm{\γ}}_k-1)}^{0.7};$

When Δ≤di＜4.5 Δs, ω _i=102.71d _i(γ _k-1) ^0.7

When di 〉=4.5 Δs, ${\mathrm{\ω}}_i=51.1\sqrt{d_i({\mathrm{\γ}}_k-1)}$

Wherein:

d _pThe mean grain size of solid material particle in the-filling slurry;

The average settlement speed of solid material particle in ω-filling slurry;

γ ₀The density of-water;

ω _iThe settling velocity of-Di i level solid material particle;

d _iThe particle diameter of-i level solid material particle;

α _iThe output capacity of the solid material particle of-Di i level particle diameter;

The shape coefficient of k-solid particle.

According to a seventh embodiment of the invention, flow velocity is calculated by the flowmeter of the filling slurry of input block input as parameter by the utilization of the following relation of plane formula of computing unit:

$v=\frac{4Q}{{\mathrm{\&pi;<figure-callout\; id="2"\; label="D"\; filenames="A20071011141400191.png"\; state="\{\{state\}\}">D</figure-callout>}}^2}$

Wherein: the flow of Q-filling slurry.

According to the eighth embodiment of the present invention, solid material in the described filling slurry mainly comprises tailings and various interpolation material, in the wherein said filling slurry density of solid material by the utilization of the following relation of plane formula of computing unit as parameter by the density of the tailings in the solid material of input block input, in the filling slurry various interpolation materials density, and the weight ratio of tailings and various interpolation materials calculate:

${\mathrm{\&gamma;}}_k=\frac{1+\mathrm{\&Sigma;}{M}_i}{\frac{1}{{\mathrm{\&gamma;}}_w}+\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}\frac{M_i}{{\mathrm{\&gamma;}}_i}}$

Wherein:

γ _kThe density of the solid material the in-filling slurry;

γ _wThe density of the tailings the in-solid material;

γ _iThe density of the various interpolation materials the in-filling slurry;

M _iThe weight ratio of-tailings and various interpolation materials.

According to the ninth embodiment of the present invention, the volumetric concentration of described filling slurry is utilized as the mass concentration of parameter by the filling slurry of input block input to calculate by the following relation of plane formula of computing unit:

$m_t=\frac{{\mathrm{\&gamma;}}_j}{{\mathrm{\&gamma;}}_k}{m}_z$

And the proportion of filling slurry is calculated by the following relation of plane formula of computing unit:

${\mathrm{\&gamma;}}_j=\frac{{\mathrm{\&gamma;}}_0{\mathrm{\&gamma;}}_k}{{\mathrm{\&gamma;}}_k-m_z({\mathrm{\&gamma;}}_k-{\mathrm{\&gamma;}}_0)}$

Wherein:

m _zThe mass concentration of-filling slurry,

γ _jThe proportion of-filling slurry.

According to the tenth embodiment of the present invention, one of the density of solid material and mean grain size of solid material in the mass concentration that a selected parameter is a filling slurry, the proportion of filling slurry, the filling slurry.A perhaps selected parameter is one of flow velocity or caliber.

In addition, described output unit be display, printer, plotting apparatus and disk at least one of them.

According to high concentration ground paste filling collar experiment simulation system of the present invention, can carry out high concentration ground paste filling collar experiment with simulating, thereby substitute the high concentration ground paste filling collar experiment that in mining, must carry out on the spot, and it is simple in structure, cost is low, and can obtain the required data of design filling system at the mine of various conditions, so the scope of application is extensive.

Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or understand by practice of the present invention.

Description of drawings

Fig. 1 is the block diagram according to the high concentration ground paste filling collar experiment simulation system formation of the embodiment of the invention;

Fig. 2 is the synoptic diagram according to the high concentration ground paste filling collar experiment simulation system of the embodiment of the invention;

Fig. 3 is the operational flowchart according to the high concentration ground paste filling collar experiment simulation system of the embodiment of the invention.

Embodiment

Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish label is represented components identical.So that explain the present invention, described embodiment is exemplary, and can not be interpreted as limitation of the present invention below by embodiment is described with reference to the drawings.

At first, need to prove that in the present invention, high concentration ground paste comprises classified tailings and full tailings.

Below with reference to accompanying drawing the high concentration ground paste filling collar experiment simulation system according to the embodiment of the invention is described.As shown in Figure 1, the high concentration ground paste filling collar experiment simulation system according to the embodiment of the invention comprises parameter input unit 1, parameter selection and setup unit 2, computing unit 4, storage unit 5 and output unit 6.

Parameter input unit 1 is used to import a plurality of parameters relevant with filling slurry and pipeline, and described a plurality of parameters are in order to calculate the resistance coefficient i of pipeline to filling slurry _jDescribed a plurality of parameter can comprise the volumetric concentration m of filling slurry _t, the solid material density γ among the flow velocity v, filling slurry _k, and the caliber D of pipeline.

Need to prove that above-mentioned parameter can directly not imported from parameter input unit, but obtain according to certain relational expression utilization other calculation of parameter that this will be described below from the input block input by computing unit.

In addition, for the resistance coefficient i of pipeline to clear water ₀With in the filling slurry fixedly the sedimentation resistance coefficient Cx of material particles can obtain with the parameter of the following relational expression utilization that will describe by computing unit by parameter input unit 1 input, also can obtain by concrete test,, use directly by input block 1 input as constant for computing unit 4.

Parameter is selected and setup unit 2 is used for selecting a parameter from described a plurality of parameters, flow velocity for example, and be set at variable, and be constant with all the other parameter settings simultaneously, thus the resistance coefficient of the calculation of parameter filling slurry of the relational expression utilization input that computing unit 4 can will be described according to following.

For example, computing unit 4 calculates flow velocity v and the slip resistance coefficient i as variable _jBetween corresponding relation, for example corresponding relation of curve map or form, the resistance coefficient i of slip then _jBe stored in the storage unit 5 with the corresponding relation of flow velocity v.

Be stored in the resistance coefficient i of the slip in the storage unit 5 _jCan be by output unit 6 outputs, described output unit 6 includes but not limited to display, printer, plotting apparatus and disk.For example, the resistance coefficient i of the slip in the storage unit 5 _jCan be presented on the display with the corresponding relation of flow velocity v, can go out simultaneously, or draw corresponding curve map, or be directly downloaded in the disk, use during for the filling system that designs the mine by plotting apparatus by printer prints.

High concentration ground paste filling collar experiment simulation system according to the present invention comprises step-length setup unit 3, and this step-length setup unit 3 is used to set the step-length as the variation of the flow velocity v of variable, and for example, flow velocity v is each to change a unit.

Need to prove, can understand for those of ordinary skill in the art, as the parameter of variable also can be a constant, and promptly step change is 0, thus computing unit 4 utilize input, all be the resistance coefficient that the calculation of parameter of constant goes out a concrete slip.

In addition, each parameter can be imported with a scope, and parameter is selected and setup unit 2 is selected the normal value of a value as parameter in the scope of these parameters.Certainly, each parameter also can be with a constant input, and at this moment, as mentioned above, the step-length that is selected as the parameter of variable is zero, thereby computing unit 4 only calculates the resistance coefficient of a pipeline to slip.

In addition, for the ordinary skill in the art, be understandable that, because filling collar experiment simulation system of the present invention is the collar experiment that is used to simulate high concentration ground paste filling, therefore, as the mass concentration m of filling slurry _zExceed certain scope, that is, when the concentration of slip exceeds the concentration range of high concentration ground paste filling, parameter input unit 1 will be judged m _zBe Invalid parameter.In the filling in mine field, generally speaking, as the mass concentration 50%≤m of slip _z≤ 76% o'clock, filling was hydraulic stowing, and worked as the weight concentration 76%≤m of slip _zThe time, filling is high concentration ground paste filling or paste body filling, this depends on concrete filling slurry.And above-mentioned concrete numerical value boundary line also only is a threshold roughly, but not absolute cut off value, concrete cut off value is decided by concrete filling slurry.

Specifically describe the operation that computing unit 4 utilizes the resistance coefficient of the calculation of parameter slip of importing below.

Referring to figs. 2 and 3, by the volumetric concentration m of input block 1 input filling slurry _t, the solid material density γ among the flow velocity v, filling slurry _k, and the caliber D of pipeline, the relational expression (1) below computing unit 4 utilizes is calculated the resistance coefficient of slip:

$i_j=i_0\{1+{106.9m}_t^{4.42}{\left(\frac{\mathrm{gD}({\mathrm{\&gamma;}}_k-1)}{{\mathrm{<figure-callout\; id="2"\; label="v"\; filenames="A20071011141400191.png"\; state="\{\{state\}\}">v</figure-callout>}}^2\sqrt{\mathrm{Cx}}}\right)}^{1.78}\}\&CenterDot;\&CenterDot;\&CenterDot;\left(1\right)$

Wherein:

i _jThe horizontal pipe of-unit length is to the resistance coefficient (can abbreviate the resistance coefficient or the resistance of ducting coefficient of slip as) of filling slurry, unit: kPa/m;

i ₀The horizontal pipe of-unit length is to the resistance coefficient (abbreviating the resistance coefficient of clear water as) of clear water, unit: kPa/m;

m _tThe volumetric concentration of-filling slurry, unit: number percent (%);

G-acceleration of gravity, unit: m/s ²

The caliber of D-pipeline, unit: m;

The flow velocity of v-filling slurry, unit: m/s;

The fixing sedimentation resistance coefficient of material particles in the Cx-filling slurry;

γ _kThe density of the solid material the in-filling slurry, unit: t/m ³

From above-mentioned formula as can be seen, parameter is a variable and other parameters are under the situation of constant therein, and computing unit 4 can access the resistance coefficient i of slip _jCorresponding variation relation with variable parameter.

More specifically, in order to obtain the resistance coefficient i of clear water ₀, computing unit 4 can calculate with following relational expression (2):

$i_0=\mathrm{\&lambda;}\&CenterDot;\frac{{\mathrm{<figure-callout\; id="2"\; label="v"\; filenames="A20071011141400191.png"\; state="\{\{state\}\}">v</figure-callout>}}^2}{2\mathrm{gD}}\&CenterDot;\&CenterDot;\&CenterDot;\left(2\right)$

Wherein λ is the clear water coefficient of frictional resistance.

λ in the relational expression (2) can be calculated by computing unit 4 following relation of plane formulas (3):

$\mathrm{\&lambda;}=\frac{K_a}{{(2\log \frac{D}{0.2224}+1.74)}^2}\&CenterDot;\&CenterDot;\&CenterDot;\left(3\right)$

K wherein _aBe pipeline quality of connection coefficient, and when D 〉=118mm, K _a=1～1.5; When D≤100mm, K _a=1.2～1.357.

And then the sedimentation resistance coefficient Cx of the solid material particle in the relational expression (1) can be calculated by the following relation of plane formula of computing unit (4):

$\mathrm{Cx}=1308\frac{({\mathrm{\&gamma;}}_k-{\mathrm{\&gamma;}}_0)d_p}{{\mathrm{\&omega;}}^2}\&CenterDot;\&CenterDot;\&CenterDot;\left(4\right)$

Wherein ω is calculated by the following relation of plane formula of computing unit:

ω=k ∑ ω _iα _iAnd

If $\mathrm{\&Delta;}=\sqrt[3]{0.0001\&divide;({\mathrm{\&gamma;}}_k-1)},$

When di＜0.3 Δ, ${\mathrm{\&omega;}}_i={5450d}_i^2({\mathrm{\&gamma;}}_k-1);$

When 0.3 Δ≤di＜Δ, ${\mathrm{\&omega;}}_i={123.04d}_i^{1.1}{({\mathrm{\&gamma;}}_k-1)}^{0.7};$

When Δ≤di＜4.5 Δs, ω _i=102.71d _i(γ _k-1) ^0.7

When di 〉=4.5 Δs, ${\mathrm{\&omega;}}_i=51.1\sqrt{d_i({\mathrm{\&gamma;}}_k-1)}$

Wherein:

d _pThe mean grain size of solid material particle in the-filling slurry, unit: cm;

The average settlement speed of solid material particle in ω-filling slurry, unit: cm/s;

γ ₀The density of-water.

ω _iThe settling velocity of-Di i level solid material particle, cm/s;

d _iThe particle diameter of-i level solid material particle, cm gets in unit

α _iThe output capacity of the solid material particle of-Di i level particle diameter, expression decimally;

The shape coefficient of k-solid particle, for tailings, k is 0.8.

The resistance coefficient of the slip that calculates is sent to storage unit 5 from computing unit 4, then by output unit 6 outputs, as shown in Figure 2.

Need to prove, though the other calculation of parameter that computing unit 4 utilizes formula (2)-(4) to import by input block obtains partial parameters and/or coefficient in relational expression (1)-(4).Yet, this not necessarily, these parameters or/coefficient, for example fixedly the sedimentation resistance coefficient Cx of material particles, the resistance coefficient i of clear water in the filling slurry ₀, filling slurry volumetric concentration m _tAnd the density γ of the solid material in the filling slurry _k, can obtain by test according to concrete mine conditions, use for computing unit 4 by the input block input as constant, so that simplify the computing of computing unit 4, accelerate travelling speed.

In addition, as top description and the following description that will carry out, when the partial parameters by parameter input unit 1 input was not the used parameter of relational expression (1), computing unit 4 can obtain according to corresponding relational expression utilization other calculation of parameter from input block 1 input.

For example, when by parameter input unit 1 input be the flow of slip rather than flow velocity the time, computing unit 4 can utilize flowmeter to calculate flow velocity according to following relational expression (5):

$v=\frac{4Q}{{\mathrm{\&pi;<figure-callout\; id="2"\; label="D"\; filenames="A20071011141400191.png"\; state="\{\{state\}\}">D</figure-callout>}}^2}\&CenterDot;\&CenterDot;\&CenterDot;\left(5\right)$

Wherein Q is the flow of filling slurry

For another example, when the solid material in the filling slurry mainly comprises under the situation of tailings and various interpolation materials, the density of solid material is calculated by computing unit 4 following relation of plane formulas (6) in the filling slurry:

${\mathrm{\&gamma;}}_k=\frac{1+\mathrm{\&Sigma;}{M}_i}{\frac{1}{{\mathrm{\&gamma;}}_w}+\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}\frac{M_i}{{\mathrm{\&gamma;}}_i}}\&CenterDot;\&CenterDot;\&CenterDot;\left(6\right)$

Wherein:

γ _kThe density of the solid material the in-filling slurry;

γ _wThe density of the tailings the in-solid material;

γ _iThe density of the various interpolation materials the in-filling slurry;

M _iThe weight ratio of-tailings and various interpolation materials.

And then for example, when the concentration of slip of input was not volumetric concentration but mass concentration, computing unit 4 utilized mass concentration to calculate volumetric concentration according to following relational expression (7):

$m_t=\frac{{\mathrm{\&gamma;}}_j}{{\mathrm{\&gamma;}}_k}{m}_z\&CenterDot;\&CenterDot;\&CenterDot;\left(7\right)$

The proportion γ of filling slurry wherein _jCalculate according to following relational expression (8) by computing unit 4:

${\mathrm{\&gamma;}}_j=\frac{{\mathrm{\&gamma;}}_0{\mathrm{\&gamma;}}_k}{{\mathrm{\&gamma;}}_k-m_z({\mathrm{\&gamma;}}_k-{\mathrm{\&gamma;}}_0)}\&CenterDot;\&CenterDot;\&CenterDot;\left(8\right)$

M wherein _zBe the mass concentration of filling slurry, unit: number percent (%), and γ _jProportion for filling slurry.

Need to prove, above-mentioned relation formula (1)-(8) among the present invention are the experimental formula in the filling in mine field, therefore, the unit of each parameter (dimension) can not derive in strict accordance with relational expression, unless otherwise indicated, the unit of each parameter in relational expression all uses unit separately, that is to say, relational expression is only represented the numerical relation of each parameter, and does not represent the relation between their unit.Therefore, each parameter unit between the inapplicable in the present invention above-mentioned relation formula of relation.

Below table be the average resistance coefficient that utilizes the slip that the high concentration ground paste filling collar experiment system of the embodiment of the invention obtains.

From above-mentioned table as can be known, utilization can be simulated the high concentration ground paste filling collar experiment that is applicable to various mines concrete conditions in the establishment of a specific crime fully according to high concentration ground paste filling collar experiment simulation system of the present invention.Therefore, utilize the resistance coefficient of the slip that high concentration ground paste filling collar experiment of the present invention system obtains to be applied to design the filling system that is suitable on the various mines fully.

Below with reference to Fig. 2 and Fig. 3 operating process according to the high concentration ground paste filling collar experiment simulation system of the embodiment of the invention is described.

At first, by parameter input unit 1 input parameter (step 1), then, parameter input unit 1 judges that the mass concentration of slip of input is whether in the concentration range of high concentration ground paste filling, if concentration is not in the concentration range of high concentration ground paste filling, judge that in parameter input unit 1 this concentration is Invalid parameter, then flow process turns back to initial state.If concentration is positioned at the concentration range of high concentration ground paste filling, then parameter is selected and parameter of setup unit 2 selections, and for example flow velocity is set to constant (step 2) as variable and other parameters.Next, step-length setup unit 3 is set the step-length (step 3) of the variation of flow velocity.Computing unit 4 utilizes the relevant parameters of input and relational expression to calculate the resistance coefficient of slip and carry out described point (promptly describing the corresponding point of the resistance coefficient of flow velocity and slip on curve map) (step 4).

Then, computing unit 4 repeats step 4 under the situation of a step-length of the every increase of flow velocity, arrive the upper limit up to flow velocity, computing unit 4 just calculates the resistance coefficient of slip and the curve map or the form (not shown) of change in flow so, and stores storage unit 5 (step 5) into.The curve map or the form that store in the storage unit 5 for example may be displayed on the display, perhaps by printer output.

Foregoing description is with the operating process of flow velocity as the high concentration ground paste filling collar experiment simulation system of variable description.For those having ordinary skill in the art will appreciate that, other parameters, for example the density of solid material and the mean grain size of solid material etc. can be as variablees in the proportion of the mass concentration of caliber, filling slurry, filling slurry, the filling slurry, operating process and said process are similar, repeat no more here.

Thus, utilization is according to high concentration ground paste filling collar experiment simulation system of the present invention, simple to operate, and can access the resistance coefficient of the high concentration ground paste in the mine that is used for various conditions, thereby for the design filling system provides design considerations, and needn't on the mine, carry out collar experiment practically, and provide cost savings, reduced the construction period in mine.

Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can change that scope of the present invention is limited by claims and equivalent thereof to these embodiment.

Claims (12)

1, a kind of high concentration ground paste filling collar experiment simulation system comprises:

Parameter input unit is used to import a plurality of parameters, and described a plurality of parameters comprise the solid material density in the volumetric concentration, flow velocity, filling slurry of filling slurry and the caliber of pipeline, in order to calculate the resistance coefficient of pipeline to filling slurry;

Parameter is selected and setup unit, is used for selecting a parameter and being set at variable from a plurality of parameters of input, and be constant with all the other parameter settings simultaneously;

Computing unit is used for utilizing described a plurality of calculation of parameter to go out the resistance coefficient of described slip with predetermined relational expression, so that obtain the resistance coefficient of described slip and the corresponding relation of a selected parameter, described predetermined relational expression is:

$i_j=i_0\{1+106.9m_t^{4.42}{\left(\frac{\mathrm{gD}({\mathrm{\&gamma;}}_k-1)}{v^2\sqrt{\mathrm{Cx}}}\right)}^{1.78}\}$

Wherein:

i _jThe horizontal pipe of-unit length is to the resistance coefficient of filling slurry;

i ₀The horizontal pipe of-unit length is to the resistance coefficient of clear water;

m _tThe volumetric concentration of-filling slurry;

G-acceleration of gravity;

The caliber of D-pipeline;

The flow velocity of v-filling slurry;

The fixing sedimentation resistance coefficient of material particles in the Cx-filling slurry;

γ _kThe density of the solid material the in-filling slurry;

Storage unit is used to store the resistance coefficient of the slip that described computing unit calculates; With

Output unit is used to export the resistance coefficient that is stored in the slip in the storage unit.

2, high concentration ground paste filling collar experiment simulation system according to claim 1 further comprises the step-length setup unit, is used to set the step-length that a selected parameter changes.

3, high concentration ground paste filling collar experiment simulation system according to claim 2, the corresponding relation of the resistance coefficient of wherein said slip and a selected parameter is the form of curve map or form.

4, according to each described high concentration ground paste filling collar experiment simulation system among the claim 1-3, wherein said pipeline unit length is to the resistance coefficient i of clear water ₀Calculate by the following relation of plane formula of computing unit:

$i_0=\mathrm{\&lambda;}\&CenterDot;\frac{v^2}{2\mathrm{gD}}$

Wherein:

The resistance coefficient of λ-clear water.

5, high concentration ground paste filling collar experiment simulation system according to claim 4, the coefficient of frictional resistance of wherein said clear water is calculated by the following relation of plane formula of computing unit:

$\mathrm{\&lambda;}=\frac{K_a}{{(2\log \frac{D}{0.2224}+1.74)}^2}$

Wherein:

K _a-pipeline quality of connection coefficient.

6, high concentration ground paste filling collar experiment simulation system according to claim 5, the sedimentation resistance coefficient of wherein said solid material particle is calculated by the following relation of plane formula of computing unit:

$\mathrm{Cx}=1308\frac{({\mathrm{\&gamma;}}_k-{\mathrm{\&gamma;}}_0)d_p}{{\mathrm{\&omega;}}^2}$

Wherein ω is calculated by the following relation of plane formula of computing unit:

ω=k ∑ ω _iα _iAnd

If $\mathrm{\&Delta;}=\sqrt[3]{0.0001\&divide;({\mathrm{\&gamma;}}_k-1)},$

When di＜0.3 Δ, ${\mathrm{\&omega;}}_i={5450d}_i^2({\mathrm{\&gamma;}}_k-1);$

When 0.3 Δ≤di＜Δ, ${\mathrm{\&omega;}}_i=123.04d_i^{1.1}{({\mathrm{\&gamma;}}_k-1)}^{0.7};$

When Δ≤di＜4.5 Δs, ω _i=102.71d _i(γ _k-1) ^0.7

When di 〉=4.5 Δs, ${\mathrm{\&omega;}}_i=51.1\sqrt{d_i({\mathrm{\&gamma;}}_k-1)}$

Wherein:

d _pThe mean grain size of solid material particle in the-filling slurry;

The average settlement speed of solid material particle in ω-filling slurry;

γ ₀The density of-water;

ω _iThe settling velocity of-Di i level solid material particle;

d _iThe particle diameter of-i level solid material particle;

α _iThe output capacity of the solid material particle of-Di i level particle diameter;

The shape coefficient of k-solid particle.

7, high concentration ground paste filling collar experiment simulation system according to claim 6, wherein said flow velocity is calculated by the flowmeter of the filling slurry of input block input as parameter by the utilization of the following relation of plane formula of computing unit:

$v=\frac{4Q}{\mathrm{\&pi;}{D}^2}$

Wherein:

The flow of Q-filling slurry.

8, high concentration ground paste filling collar experiment simulation system according to claim 7, the solid material in the wherein said filling slurry mainly comprise tailings and various interpolation material,

In the wherein said filling slurry density of solid material by the utilization of the following relation of plane formula of computing unit as parameter by the density of the tailings in the solid material of input block input, in the filling slurry various interpolation materials density, and the weight ratio of tailings and various interpolation materials calculate:

${\mathrm{\&gamma;}}_k=\frac{1+\mathrm{\&Sigma;}{M}_i}{\frac{1}{{\mathrm{\&gamma;}}_w}+\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}\frac{M_i}{{\mathrm{\&gamma;}}_i}}$

Wherein:

γ _kThe density of the solid material the in-filling slurry;

γ _wThe density of the tailings the in-solid material;

γ _iThe density of the various interpolation materials the in-filling slurry;

M _iThe weight ratio of-tailings and various interpolation materials.

9, high concentration ground paste filling collar experiment simulation system according to claim 8, the volumetric concentration of wherein said filling slurry is utilized as the mass concentration of parameter by the filling slurry of input block input to calculate by the following relation of plane formula of computing unit:

$m_t=\frac{{\mathrm{\&gamma;}}_j}{{\mathrm{\&gamma;}}_k}{m}_z$

And the proportion of filling slurry is calculated by the following relation of plane formula of computing unit:

${\mathrm{\&gamma;}}_j=\frac{{\mathrm{\&gamma;}}_0{\mathrm{\&gamma;}}_k}{{\mathrm{\&gamma;}}_k-m_z({\mathrm{\&gamma;}}_k-{\mathrm{\&gamma;}}_0)}$

Wherein:

m _zThe mass concentration of-filling slurry,

γ _jThe proportion of-filling slurry.

10, high concentration ground paste filling collar experiment simulation system according to claim 9, one of the density of solid material and mean grain size of solid material in the mass concentration that a wherein selected parameter is a filling slurry, the proportion of filling slurry, the filling slurry.

11, high concentration ground paste filling collar experiment simulation system according to claim 1, a wherein selected parameter is one of flow velocity or caliber.

12, high concentration ground paste filling collar experiment simulation system according to claim 1, wherein said output unit be display, printer, plotting apparatus and disk at least one of them.

Images