CN101451442B - Control method and control device for controlling auxiliary material addition to tailings - Google Patents
Control method and control device for controlling auxiliary material addition to tailings Download PDFInfo
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- CN101451442B CN101451442B CN200710178267XA CN200710178267A CN101451442B CN 101451442 B CN101451442 B CN 101451442B CN 200710178267X A CN200710178267X A CN 200710178267XA CN 200710178267 A CN200710178267 A CN 200710178267A CN 101451442 B CN101451442 B CN 101451442B
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Abstract
The invention relates to a method for controlling accessories added into mine filling tailings, which comprises: calculating dry sand amount in the tailings flowing into a stirring groove from a sand silo; setting the ratio of the accessories to the dry sand and using the ratio of the accessories to the dry sand to calculate initial adding amount of the accessories; measuring actual adding amount of the accessories; using the actual adding amount and the initial adding amount to calculate a compensation value for compensating the initial adding amount and using the compensation value to compensate the initial adding amount so as to obtain set adding amount; using the actual adding amount to correct the set adding amount; and controlling amount of the accessories added into the tailings based on the corrected set adding amount. The control method effectively overcomes the defects of large actual fluctuation of concentration of filling slurry and higher accessories consumption cost in a continuous preparation control method, has a simple structure compared with batch manufacturing technology, and has the advantages of high lime sand blending accuracy in a batch preparation method, and good continuity and simple process in continuous manufacturing technology.
Description
Technical field:
The present invention relates to a kind of control method and control appliance that auxiliary material adds of controlling, particularly a kind ofly be used for controlling control method and the control appliance that adds auxiliary material to the mine worked-out section tailings.
Background technology:
Along with the continuous minimizing of global mineral resources, filling method is adopted by increasing mine as the mining methods of a kind of safety, environmental protection and low loss late.What abroad adopt usually is slip prepared in batches technology: wherein with after the weighing according to a certain ratio in advance of tailings, auxiliary material and water and stirring, send into underground goaf again.Though this technology is guaranteeing to be easy to realize that program is comparatively complicated aspect cement-sand ratio and the concentration.
Most domestic adopts the continuous preparation technology of slip: wherein tailings, cement and water are being sent into agitation tank continuously, the filling slurry that will stir back formation simultaneously is transported to underground goaf from the agitation tank discharge gate.
For the continuous preparation technology of slip, though also the addition of actual auxiliary material is fed back to the control module of feeder, thus the feeding coal of feeder proofreaied and correct.Yet in fact, the amount that tailings flows out from the sand storehouse fluctuates, and amplitude and rate of change are all very big.In addition, the actual fluctuation of the discharge of auxiliary material is also bigger, and the Flow-rate adjustment of auxiliary material is slow with respect to tailings, and in other words, the adjusting of auxiliary material discharge has hysteresis quality with respect to the adjusting of tailings discharge.Thereby; The big ups and downs of above-mentioned hysteresis quality and tailings feed make the feeding coal of auxiliary material not catch up with the variation of tailings feeding coal usually; Tailings and auxiliary material can not get into agitation tank simultaneously by the expectation proportioning of setting thus, cause pulp density inhomogeneous, have influenced filling quality.
In addition, because the acute variation of pulp density, in order to reach identical strength of filling mass; The maximum concentration that under certain pipeline transport condition, can carry at pipeline in other words is a timing; In order to guarantee filling quality, need to improve the cement-sand ratio of casting resin, i.e. auxiliary material and tailings ratio.The increasing of cement-sand ratio has increased auxiliary material, cementitious matter (like cement) for example, consuming cost.
Summary of the invention:
Technical problem to be solved by this invention is intended to overcome above-mentioned shortcoming of the prior art, and a kind of control method and control appliance that adds auxiliary material to the mine worked-out section tailings that be used for controlling is provided.
According to embodiments of the invention, auxiliary material is added in a kind of control in tailings control appliance is proposed, comprising: dry sand amount computing unit is used for calculating the dry sand amount that flows out to the tailings in the agitation tank from the sand storehouse; The initial addition computing unit of auxiliary material is used to set the proportioning of dry sand and auxiliary material and utilizes said proportioning and the dry sand amount calculates the initial addition of auxiliary material; The actual addition detecting unit of auxiliary material is used for detecting the actual addition of the auxiliary material that adds to tailings; Expansion loop, this expansion loop utilization calculates the offset that said initial addition is compensated from the actual addition of the actual addition detecting unit reception of auxiliary material and the initial addition that receives from the initial addition computing unit of said auxiliary material; Auxiliary material is set the addition computing unit, and this auxiliary material is set the addition computing unit and utilized said offset that said initial addition is compensated, so that calculate the setting addition of auxiliary material; Add control module with auxiliary material; This auxiliary material adds control module to be set the addition computing unit from auxiliary material and receives said setting addition, receives said actual addition from the actual addition detecting unit of said auxiliary material, utilizes the said setting addition of said actual addition correction and control the amount of the auxiliary material that feeder adds based on revised setting addition in tailings.
The further embodiment according to the present invention, said dry sand amount computing unit comprises: the tailings flow meter is used to measure the flow that flows out to the tailings in the agitation tank from the sand storehouse; The tailings densimeter is used to measure the concentration that flows out to the tailings in the agitation tank from the sand storehouse; With dry sand amount calculator, be used for utilizing said flow and concentration to calculate the dry sand quality of tailings.
The further embodiment according to the present invention, the initial addition computing unit of said auxiliary material comprises: comparison measurer is used to set the proportioning of dry sand and auxiliary material; With the initial addition calculator of auxiliary material, be used to utilize said proportioning and dry sand amount to calculate the initial addition of auxiliary material.
The interior offset of predetermined amount of time that auxiliary material setting addition computing unit utilizes said expansion loop to calculate compensates said initial addition.
The further embodiment according to the present invention, all offsets constantly of past that auxiliary material setting addition computing unit utilizes said expansion loop to calculate compensate said initial addition.
The further embodiment according to the present invention, the actual addition detecting unit of said auxiliary material is for detecting the flow meter of auxiliary material flow.For example said flow is counted impact flow meter.
According to another embodiment of the present invention, propose auxiliary material is added in a kind of control in tailings control method, may further comprise the steps: calculating flows out to the dry sand amount the tailings in the agitation tank from the sand storehouse; Set the proportioning of auxiliary material and dry sand and utilize said dry sand amount and the initial addition of the auxiliary material that proportioning calculating is added in tailings; Control the amount of the auxiliary material that in tailings, adds based on said initial addition; The actual addition of the auxiliary material that measurement is added in tailings; Utilize said actual addition and initial addition to calculate the offset that said initial addition is compensated and utilize said offset initial addition to be compensated so that obtain setting addition; Utilize the amount of said setting addition of said actual addition correction and the auxiliary material that control is added based on revised setting addition in tailings.
The further embodiment according to the present invention calculates the dry sand amount that flows out to the tailings in the agitation tank from the sand storehouse and comprises: measures the flow that flows out to the tailings in the agitation tank from the sand storehouse; Measurement flows out to the concentration of the tailings in the agitation tank from the sand storehouse; With the dry sand quality of utilizing in said flow and the concentration calculating tailings.
According to a further embodiment of the invention, said auxiliary material is a cement.But be not limited to cement.
The further embodiment according to the present invention utilizes said actual addition to calculate the offset that said initial addition is compensated and utilize said offset initial addition to be compensated so that obtain setting addition with initial addition and comprises: utilizes the offset in the predetermined amount of time that said initial addition is compensated.
The further embodiment according to the present invention utilizes said actual addition to calculate the offset that said initial addition is compensated and utilize said offset initial addition to be compensated so that obtain setting addition with initial addition and comprises: utilizes all offsets constantly of past to carrying out said initial addition compensation.
The control method and the control appliance that add auxiliary material according to control of the present invention compared with prior art have following advantage at least: the present invention adopts the control method of imitation prepared in batches process, has overcome the shortcoming that actual fluctuation is big, ratio of adjuvant increases, the supplementary product onsumption cost increases of filling slurry concentration in the prior art effectively.Even the auxiliary material addition is owing to the variation that lags behind or other reason does not have to catch up with the tailings amount of feeding in the preparation process; Also can more easily its difference be filled within a certain period of time; So just form many batches of " soft " slip; Total proportioning of each material is more accurately in the every batch of soft slip, through the stirring action of agitation tank, just can obtain more uniform filling slurry again.Both had in the batch preparation cement-sand ratio and the concentration aspect advantage of high accuracy that realizes easily, is mixed, had the good advantage of simple technology of continuous preparation technology's continuity again.
Description of drawings
Fig. 1 is the sketch map that is used for carrying to mine worked-out section the filling system of filling slurry;
Fig. 2 is the schematic diagram that in tailings, adds the control appliance of auxiliary material according to the control of the embodiment of the invention;
Fig. 3 controls the schematic diagram that in tailings, adds the control appliance of auxiliary material according to another embodiment of the present invention;
Fig. 4 is the flow chart that in tailings, adds the control method of auxiliary material according to the control of the embodiment of the invention;
Fig. 5 controls the flow chart that in tailings, adds the control method of auxiliary material according to another embodiment of the present invention.
The specific embodiment:
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish label is represented components identical.Be used to explain the present invention through the embodiment that is described with reference to the drawings below, said embodiment is exemplary, and can not be interpreted as limitation of the present invention.
Filling system from filling slurry to mine worked-out section that carry is at first described below.Fig. 1 shows sketch map from the filling system of filling slurry to mine worked-out section that carry.Referring to Fig. 1, said filling system mainly comprises sand storehouse 1, auxiliary material storehouse 2, agitation tank 3, water injecting pipeline 4 and filling pipeline 5.
Deposited tailings in the sand storehouse 1, and auxiliary material is housed in auxiliary material storehouse 2, said auxiliary material for example is a cementitious matter (like cement), but is not limited to this.Tailings, auxiliary material and water are transported in the agitation tank 3 through pipeline separately, stir the back through agitation tank 3 and form filling slurry, and the filling slurry that mixes is transported in the goaf through filling pipeline 5.In addition, can be provided with level-sensing device 6 on the agitation tank 3, be used to detect the liquid level of the filling slurry in the agitation tank.
Between sand storehouse 1 and agitation tank 3, be provided with tailings control valve 1.1, tailings densimeter 1.2, tailings flow meter 1.3 and electric control valve 1.4; Through control electric control valve 1.4 and tailings control valve 1.1, can control tailings and flow out to the amount in the agitation tank 3 from sand storehouse 1.For example, tailings densimeter 1.2, tailings flow meter 1.3 can be measured concentration and the flow that flows out to the tailings in the agitation tank from sand storehouse 1, thereby calculate the dry sand quality the tailings in the sand storehouse flows out to agitation tank 3.
Between auxiliary material storehouse 2 and agitation tank 3, be provided with feeder 2.1 and auxiliary material flow meter 2.4, for example feeder 2.1 is that conveying worm and flow meter 2.4 are impact flow meter.Conveying worm 2.1 is driven by motor 2.2; Motor 2.2 is for example controlled through frequency converter 2.3 by control module; Rotating speed through control frequency converter 2.3 control motor 2.2; Thereby the rotating speed of control screw conveyer 2.1 is controlled the amount of the auxiliary material that conveying worm 2.1 carries thus in agitation tank 3.The amount of the auxiliary material of in agitation tank 3, carrying is to be confirmed by the proportioning of the dry sand amount the tailings that in sand storehouse 1, supplies in the agitation tank 3 and predefined dry sand amount and auxiliary material.
In the prior art, though also utilize the actual addition of detected auxiliary material that the initial addition of auxiliary material of the control module that sends to feeder 2.1 is revised, yet; The pairing tailings of actual addition of the auxiliary material that calculates in this process has got into agitation tank in advance; Therefore, always there is hysteresis as the addition of the auxiliary material on the basis of control module control feeder 2.1 with respect to pairing tailings, therefore; The addition fluctuation of auxiliary material is big, and precision is low.The present invention improves controlling the amount that is transported to the auxiliary material in the agitation tank 3 according to the proportioning of the dry sand amount in the tailings in the agitation tank 3 and dry sand amount and auxiliary material.
In addition, can be provided with flow meter 5.1 on the transfer pipeline 5, electric control valve 5.2 and densimeter 5.3.
Can make the balance that the also timely amount of adjusting auxiliary material of reflection fast reaches filling slurry to the fluctuation of tailings discharge and auxiliary material discharge according to control method of the present invention and control appliance; That is to say; Except the control module (being that auxiliary material adds control module) that the actual addition of auxiliary material is fed back to feeder; Also compensate simultaneously with the actual addition of auxiliary material initial addition to auxiliary material; So that obtain the setting addition of auxiliary material, and the actual addition of control module utilization of feeder further revises setting addition, will describe in detail below.
Describe the control appliance that in the mine worked-out section tailings, adds auxiliary material according to the control of the embodiment of the invention with reference to figure 2 below, Fig. 2 illustrates the schematic diagram that in tailings, adds the control appliance of auxiliary material according to the control of the embodiment of the invention.
As shown in Figure 2; The control appliance that is used for controlling to mine worked-out section tailings interpolation auxiliary material according to the embodiment of the invention comprises: dry sand amount computing unit 7; The initial addition computing unit 8 of auxiliary material, auxiliary material is set addition computing unit 9, and auxiliary material adds control module 10; Actual addition detecting unit 12 of auxiliary material and expansion loop 11.In an embodiment of the present invention, auxiliary material interpolation control module 10 for example can be the PID controller.
Dry sand amount computing unit 7 is used for calculating the dry sand amount that flows out to the tailings in the agitation tank 3 from sand storehouse 1, and the dry sand amount that calculates is sent to the initial addition computing unit 8 of auxiliary material.The initial addition computing unit 8 of auxiliary material utilizes the proportioning of predefined dry sand and auxiliary material and the initial addition that said dry sand amount calculates auxiliary material.
The actual addition detecting unit 12 of auxiliary material is used for detecting the actual addition of the auxiliary material that adds to tailings and said actual addition is fed back to said auxiliary material interpolation control module 10.
Auxiliary material is set addition computing unit 9 and is utilized said offset that said initial addition is compensated, so that calculate the setting addition of auxiliary material.
The setting addition that auxiliary material setting addition computing unit 9 calculates sends to auxiliary material and adds control module 10.Auxiliary material adds control module 10 and utilizes the actual addition correction that receives from the actual addition detecting unit 12 of auxiliary material to set setting addition that addition computing unit 9 receives and control the amount of the auxiliary material that feeder 3.1 adds based on revised setting addition to tailings from auxiliary material.
Need to prove that in the incipient stage of adding, because the actual addition detecting unit 12 of auxiliary material does not also detect the interpolation of auxiliary material, so auxiliary material interpolation control module 10 adds auxiliary material based on initial addition control feeder 2.1 in agitation tank.
Be used for controlling the control appliance that adds auxiliary material to tailings according to the embodiment of the invention; Not only the actual addition of detected auxiliary material is sent to auxiliary material and add control module 10; And detected actual addition sent to expansion loop 11; Expansion loop 11 utilizes actual addition and initial addition to calculate the offset to initial addition; Auxiliary material is set addition computing unit 9 and is utilized said offset that said initial addition is compensated; Thereby obtain the setting addition of auxiliary material, auxiliary material adds control module 10 utilizations to be revised setting addition from the actual addition of actual addition detecting unit 12 feedbacks of auxiliary material, and adds auxiliary material based on revised setting addition control feeder 2.1 to agitation tank 3.Therefore; Can more easily the difference between initial addition and the actual addition be filled within a certain period of time according to control appliance of the present invention, there is not hysteresis in the actual addition of auxiliary material for the tailings corresponding with said actual addition thus, thereby can control the actual addition of auxiliary material as required more accurately; The addition fluctuation of auxiliary material is little; Need not strengthen the setting value of said proportioning, thereby reduce auxiliary material, for example cementitious matter (like cement); Addition, reduced consuming cost.
Describe with reference to figure 3 below and control the schematic diagram that in tailings, adds the control appliance of auxiliary material according to another embodiment of the present invention.
As shown in Figure 3; Dry sand amount computing unit 7 can comprise the densimeter 1.2 that is used to measure tailings concentration, flow meter 1.1 and the dry sand amount calculator 7.3 that is used to measure the tailings flow, and dry sand amount calculator 7.3 is through the concentration value of the tailings that measures and the quality that flow value just can calculate dry sand.
The initial addition computing unit 8 of auxiliary material comprises: the comparison measurer 8.2 and initial addition calculator 8.1 that are used to set the proportioning of dry sand and auxiliary material.The dry sand Mass Calculation that proportioning that initial addition calculator 8.1 sets according to comparison measurer 8.2 and dry sand amount calculator 7.3 calculate goes out the initial addition of corresponding auxiliary material.
Be used for according to another embodiment of the present invention controlling that to add other formations of control appliance of auxiliary material to tailings same as the previously described embodiments.
Particularly, the actual addition detecting unit 12 of auxiliary material feeds back to auxiliary material interpolation control module 10 with detected actual addition.Simultaneously, the actual addition detecting unit 12 of auxiliary material is transported to expansion loop 11 with detected actual addition.In addition; The initial addition that initial addition calculator 8.1 is calculated also sends to expansion loop 11; Expansion loop 11 utilizes said actual addition and initial addition to calculate the offset that said initial addition is compensated, and said offset is sent to auxiliary material then and sets addition computing unit 9.
Auxiliary material is set addition computing unit 9 and is utilized said offset that said initial addition is compensated, so that calculate the setting addition of auxiliary material.
The setting addition that auxiliary material setting addition computing unit 9 calculates sends to auxiliary material and adds control module 10.Auxiliary material adds control module 10 and utilizes the actual addition correction that receives from the actual addition detecting unit 12 of auxiliary material to set setting addition that addition computing unit 9 receives and control the amount of the auxiliary material that feeder 3.1 adds based on revised setting addition to tailings from auxiliary material.
More specifically, comparison measurer 8.2 is in the proportioning that can preestablish or store dry sand and auxiliary material, and this proportioning is that the requirement of the filling slurry that obtains is as required set.Can the ratio of auxiliary material and tailings be set between 1: 40～1: 3, for example, proportioning is set at 1: 4,1: 6,1: 8,1: 10,1: 20,1: 30.The initial addition calculator 8.1 of auxiliary material just calculates initial addition according to the proportioning of setting like this.
According to embodiments of the invention, the actual addition detecting unit 12 of auxiliary material can be for the auxiliary material flow meter, and said flow meter for example is an impact flow meter.
The further embodiment according to the present invention, the interior offset of predetermined amount of time that auxiliary material setting addition computing unit 9 utilizes said expansion loop 11 to calculate compensates said initial addition, this time compensation that is referred to as to exceed.Alternatively, all offsets constantly of past that auxiliary material setting addition computing unit 9 utilizes said expansion loop 11 to calculate compensate said initial addition, and this is referred to as omnidistance compensation.This will be described in detail below.
Below with reference to figure 4 describe according to the embodiment of the invention be used for control the control method of adding auxiliary material to the mine worked-out section tailings, Fig. 4 illustrates the flow chart that in tailings, adds the control method of auxiliary material according to the control of the embodiment of the invention.
As shown in Figure 4, at first calculate the dry sand amount (step S1) in the tailings.The proportioning (step S2) of the auxiliary material of then setting dry sand and need in tailings, adding, said auxiliary material is a cement for example, but is not limited to cement.Need to prove that the proportioning of dry sand and auxiliary material also can preestablish, rather than after calculating the dry sand amount, carry out.For for the step of control method of the present invention, be not limited to order described herein, those of ordinary skill in the art can adjust said order.
After the proportioning of having set dry sand and auxiliary material, utilize said dry sand amount and proportioning to calculate the initial addition (step S3) of the auxiliary material that in tailings, adds.In the process of adding auxiliary material, measure the actual addition (step S4) of the auxiliary material that in tailings, adds.Said actual addition is fed back to initial addition, thereby obtain setting addition (step S5) so that compensate said initial addition.Simultaneously, utilize the said said setting addition of actual addition correction (step S6).At last, control the amount (step S7) of the auxiliary material that in tailings, adds based on revised setting addition.
Therefore,, utilize the actual addition that detects to compensate initial addition, obtain setting addition, simultaneously, utilize actual addition correction to set addition again according to control method of the present invention, last, based on the interpolation of revised setting addition control auxiliary material.Therefore, the actual addition of auxiliary material is not with respect to existing hysteresis with actual addition for corresponding tailings, thereby can control the actual addition of auxiliary material as required more accurately; The addition fluctuation of auxiliary material is little; Need not strengthen the setting value of said proportioning, thereby reduce auxiliary material, for example cement; Addition, reduced consuming cost.
Describe with reference to figure 5 below and be used for controlling the control method of adding auxiliary material to tailings according to another embodiment of the present invention.
In the embodiment show in figure 5, calculate the dry sand measuring that flows out to the tailings in the agitation tank from the sand storehouse and comprise that measurement flows out to the flow of the tailings in the agitation tank from the sand storehouse; Measurement flows out to the concentration of the tailings in the agitation tank from the sand storehouse; With the dry sand quality of utilizing in said flow and the concentration calculating tailings.
As stated, the proportioning of dry sand and auxiliary material is set as required, can the ratio of auxiliary material and tailings be set between 1: 40～1: 3, and for example, proportioning is set at 1: 4,1: 6,1: 8,1: 10,1: 20,1: 30.
Other steps according to the control method of this embodiment are identical with the step of the control method of the foregoing description, repeat no more here.
Need to prove, be described as two independent steps though set the proportioning of dry sand and auxiliary material with the initial addition that calculates auxiliary material, yet these two steps can be merged into a step, for example accomplish by the initial addition computing unit 8 of above-mentioned auxiliary material.
According to the present invention, utilize actual addition to compensate said initial addition so that obtain setting addition; Utilize the said setting addition of actual addition correction of said measurement.In tailings, add auxiliary material according to revised setting addition.The addition that compensation through here and correction have overcome auxiliary material is with respect to the hysteresis of corresponding with it tailings, eliminated in the continuous-feeding tailings and the actual proportioning of auxiliary material bigger, the unmanageable shortcoming that fluctuates.Less because fluctuate, need not improve the proportioning of sneaking into of auxiliary material, reduced auxiliary material mixed volume, reduced cost.
As stated; According to control method of the present invention, the control method of imitation prepared in batches process is not even the addition of the auxiliary material of system is at short notice because hysteresis or other reasons are caught up with the variation that tailings flows out to the amount in the agitation tank; Control method of the present invention also can be within a certain period of time more easily with in its difference supply; So just form many batches of " soft " slip, total proportioning of material is more accurately in every batch of material slurry, the advantage that this utilizes above-mentioned expansion loop 11 to bring just.Therefore, control method of the present invention can be called the soft batch control method of auxiliary material.
The further embodiment according to the present invention as stated, for utilizing initial addition and detected actual addition to calculate offset and utilizing said offset to compensate said initial addition, has two kinds of compensation methodes: omnidistance penalty method and limit time penalty method.
So-called omnidistance penalty method, being about in the past, the offset of all moment auxiliary materials all compensated in a moment in future.The specific algorithm of omnidistance compensation is following:
| Sequence number | Time | Computing cycle | Difference in cycle | Difference accumulative total | Offset |
| 1 | ?t1 | Δt | Δx1 | x1＝Δx1 | Δy1＝0 |
| 2 | ?t2 | Δt | Δx2 | x2＝x1+Δx2 | Δy2＝ |
| 3 | ?t3 | Δt | Δx3 | x3＝x2+Δx3 | Δy3＝ |
| 4 | ?t4 | Δt | Δx4 | x4＝x3+Δx4 | Δy4＝ |
| 5 | ?t5 | Δt | Δx5 | x5＝x4+Δx5 | Δy5＝ |
| 6 | t6 | Δt | Δx6 | x6＝x5+Δx6 | Δy6＝x5 |
| …… | …… | …… | …… | …… | …… |
| n | tn | Δt | Δx7 | x7＝x(n-1)+Δ x(n) | Δy(n)＝x(n-1) |
| …… | …… | …… | …… | …… | …… |
Last table is omnidistance backoff algorithm computational process.Wherein, computing cycle is each time interval of calculating, and the difference in the cycle is the difference of auxiliary material with the actual auxiliary material that adds of this time period planted agent adding, and the amount of the auxiliary material that should add can calculate according to dry sand amount and water content thereof through comparison measurer easily.The amount of the auxiliary material that should add here, and the water yield can be calculated by formula 1 and formula 2 respectively.
In the formula: Q
c---the amount of the auxiliary material that need add in the computing cycle, kg;
The proportioning of i---auxiliary material and tailings.
Q
1---the flow of tailings, m
3/ h;
C
1---the concentration of tailings;
ρ
0---the density of tailings, kg/m
3
In the formula: Q
s---the water yield that need add in the computing cycle, kg;
C
2---the filling slurry concentration set point.
The inferior penalty method of so-called limit, i.e. a utilization are set constantly, and (being predetermined amount of time) interior offset compensates initial addition.The specific algorithm of limit time penalty method is following:
The amount of the auxiliary material that should add in the limit time backoff algorithm and the water yield equally also can be calculated by formula 1 and formula 2 respectively.Just the span of offset is different.Suppose that the compensation number of times that limits is 3 times, then limit time backoff algorithm is as shown in the table.Can find out when omnidistance backoff algorithm compensates at every turn and treat former casting resin as lot.Then only the casting resin in nearest a period of time is treated as a batch of material in the limit time backoff algorithm.
| Sequence number | Time | Computing cycle | Difference in cycle | Difference accumulative total | Offset |
| 1 | t1 | Δt | Δx1 | x1＝Δx1 | Δy1＝0 |
| 2 | t2 | Δt | Δx2 | x2＝x1+Δx2 | Δy2＝ |
| 3 | t3 | Δt | Δx3 | x3＝x2+Δx3 | Δy3＝ |
| 4 | t4 | Δt | Δx4 | x4＝x3+Δx4 | Δy4＝Δy3+ |
| 5 | t5 | Δt | Δx5 | x5＝x4+Δx5 | Δy5＝Δy4+Δx4- |
| 6 | t6 | Δt | Δx6 | x6＝x5+Δx6 | Δy6＝Δy5+Δx5-Δx2 |
| 7 | t7 | Δt | Δx7 | x7＝x6+Δx7 | Δy7＝Δy6+Δx6-Δx3 |
| …… | …… | …… | …… | …… | …… |
| n | tn | Δt | Δx7 | x7＝x(n-1)+Δx(n) | Δy(n)＝Δy(n-1)+Δ x(n-1) -Δx(n-m-1) |
| …… | …… | …… | …… | …… | …… |
Compare omnidistance backoff algorithm; Adopt limit time compensation further to have following advantage: according to preparation technology's requirement; When usually each packing job begins need to underground filling for a moment the filling slurry of water or low concentration with lubrication circuit, and the sand storehouse when just having begun to put sand owing to need spray water in the sand storehouse fluidisation, it is lower initially to put the sand concentration ratio; Material balance compensates as target in the inferior backoff algorithm of limit a period of time nearly; When above-mentioned situation takes place, after Sha Cang is put the recovery normally of sand concentration, can make in time that the filling slurry proportioning trend in the agitation tank is normal.So the error of measuring is less.
In tailings, add auxiliary material though described above, yet, it is understandable that tailings can use other major ingredients to replace, gangue for example, this is equally within the scope of the invention.
Although illustrated and described embodiments of the invention; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can change that scope of the present invention is limited accompanying claims and equivalent thereof to these embodiment.
Claims (12)
1. one kind is used for controlling the control appliance that adds auxiliary material to tailings, it is characterized in that: comprising:
Dry sand amount computing unit is used for calculating the dry sand amount that flows out to the tailings in the agitation tank from the sand storehouse;
The initial addition computing unit of auxiliary material is used to set the proportioning of dry sand and auxiliary material and utilizes said proportioning and the dry sand amount calculates the initial addition of auxiliary material;
The actual addition detecting unit of auxiliary material is used for detecting the actual addition of the auxiliary material that adds to tailings;
Expansion loop, this expansion loop utilization calculates the offset that said initial addition is compensated from the actual addition of the actual addition detecting unit reception of auxiliary material and the initial addition that receives from the initial addition computing unit of said auxiliary material;
Auxiliary material is set the addition computing unit, and this auxiliary material is set the addition computing unit and utilized said offset that said initial addition is compensated, so that calculate the setting addition of auxiliary material; Add control module with auxiliary material, this auxiliary material adds control module and receives said setting addition, receives said actual addition, utilizes the said setting addition of said actual addition correction and control feeder adds auxiliary material to tailings amount based on revised setting addition from the actual addition detecting unit of said auxiliary material from auxiliary material setting addition computing unit.
2. according to claim 1 being used for controlled the control appliance that adds auxiliary material to tailings, and it is characterized in that: said dry sand amount computing unit comprises:
The tailings flow meter is used to measure the flow that flows out to the tailings in the agitation tank from the sand storehouse;
The tailings densimeter is used to measure the concentration that flows out to the tailings in the agitation tank from the sand storehouse; With
Dry sand amount calculator is used for utilizing said flow and concentration to calculate the dry sand quality of tailings.
3. according to claim 1 being used for controlled the control appliance that adds auxiliary material to tailings, and it is characterized in that: the initial addition computing unit of said auxiliary material comprises:
Comparison measurer is used to set the proportioning of dry sand and auxiliary material; With
The initial addition calculator of auxiliary material is used to utilize said proportioning and dry sand amount to calculate the initial addition of auxiliary material.
4. control the control appliance that adds auxiliary material to tailings according to each described being used among the claim 1-3, it is characterized in that: the interior offset of predetermined amount of time that auxiliary material setting addition computing unit utilizes said expansion loop to calculate compensates said initial addition.
5. control the control appliance that adds auxiliary material to tailings according to each described being used among the claim 1-3, it is characterized in that: all offsets constantly of past that auxiliary material setting addition computing unit utilizes said expansion loop to calculate compensate said initial addition.
6. control the control appliance that adds auxiliary material to tailings according to each described being used among the claim 1-3, it is characterized in that: the actual addition detecting unit of said auxiliary material is for detecting the flow meter of auxiliary material flow.
7. according to claim 6 being used for controlled the control appliance that adds auxiliary material to tailings, and it is characterized in that: said flow is counted impact flow meter.
8. one kind is used for controlling the control method of adding auxiliary material to tailings, may further comprise the steps:
Calculating flows out to the dry sand amount the tailings in the agitation tank from the sand storehouse;
Set the proportioning of auxiliary material and dry sand and utilize said dry sand amount and the initial addition of the auxiliary material that proportioning calculating is added in tailings;
The actual addition of the auxiliary material that measurement is added in tailings;
Utilize said actual addition and initial addition to calculate the offset that said initial addition is compensated and utilize said offset initial addition to be compensated so that obtain setting addition;
Utilize the said setting addition of said actual addition correction; With
Control the amount of the auxiliary material that in tailings, adds based on revised setting addition.
9. according to claim 8 being used for controlled the control method of adding auxiliary material to tailings, wherein calculates the dry sand amount that flows out to the tailings in the agitation tank from the sand storehouse and comprises:
Measurement flows out to the flow of the tailings in the agitation tank from the sand storehouse;
Measurement flows out to the concentration of the tailings in the agitation tank from the sand storehouse; With
Utilize said flow and concentration to calculate the dry sand quality in the tailings.
10. according to Claim 8 or 9 describedly are used for controlling the control method of adding auxiliary material to tailings, wherein said auxiliary material is a cement.
11. according to Claim 8 or the 9 described controls control method of in tailings, adding auxiliary material, wherein utilize said actual addition to calculate the offset that said initial addition is compensated and utilize said offset initial addition to be compensated and comprise: utilize the offset in the predetermined amount of time that said initial addition is compensated so that obtain setting addition with initial addition.
12. according to Claim 8 or the 9 described controls control method of in tailings, adding auxiliary material, wherein utilize said actual addition to calculate the offset that said initial addition is compensated and utilize said offset initial addition to be compensated and comprise: utilize in the past all offsets constantly carrying out said initial addition compensation so that obtain setting addition with initial addition.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101451443B (en) * | 2007-11-28 | 2011-07-27 | 中国恩菲工程技术有限公司 | Control method and control device for controlling water addition to tailings |
| CN103212334B (en) * | 2013-04-13 | 2014-12-24 | 淄博王煤矿业有限公司 | Self-service integrated equipment and process for preparing and conveying slurry material |
| CN103352722B (en) * | 2013-07-24 | 2015-05-20 | 山东理工大学 | Cemented filling close to back processing technology for goaf at barren rock filling background |
| CN107587895B (en) * | 2017-11-03 | 2023-08-11 | 山东黄金矿业股份有限公司新城金矿 | High-concentration sand discharge and automatic control underground goaf filling system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202569A (en) * | 1997-06-16 | 1998-12-23 | 陈隆金 | High concentrate paste-filling technology and equipment in mine |
| US6428107B1 (en) * | 2000-11-28 | 2002-08-06 | Inco Limited | Heat added to underground cemented fill to obtain both early and long term strength increases |
| CN1424275A (en) * | 2003-01-10 | 2003-06-18 | 中国矿业大学（北京校区） | Cementing materials for filling, slurry and preparing and filling processes |
| CN1821547A (en) * | 2006-03-30 | 2006-08-23 | 中南大学 | Method for forming solidified filler by filling phosphorous gypsum in downhole goaf |
-
2007
- 2007-11-28 CN CN200710178267XA patent/CN101451442B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202569A (en) * | 1997-06-16 | 1998-12-23 | 陈隆金 | High concentrate paste-filling technology and equipment in mine |
| US6428107B1 (en) * | 2000-11-28 | 2002-08-06 | Inco Limited | Heat added to underground cemented fill to obtain both early and long term strength increases |
| CN1424275A (en) * | 2003-01-10 | 2003-06-18 | 中国矿业大学（北京校区） | Cementing materials for filling, slurry and preparing and filling processes |
| CN1821547A (en) * | 2006-03-30 | 2006-08-23 | 中南大学 | Method for forming solidified filler by filling phosphorous gypsum in downhole goaf |
Non-Patent Citations (2)
| Title |
|---|
| 于润沧.全尾砂高浓度（膏体）料浆充填新技术.全尾砂高浓度（膏体）料浆充填新技术.1992, * |
| 刘同有.充填***检测仪表与自动控制.充填采矿技术与应用.2001, * |
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