CN101451440A - Control method and control device for controlling auxiliary material and water addition to tailings - Google Patents
Control method and control device for controlling auxiliary material and water addition to tailings Download PDFInfo
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Abstract
The invention relates to a control device and a method for controlling accessories and water added into filling tailings. The control device comprises a sand and water content computing unit, an initial accessories and water adding amount computing unit, an actual accessories and water adding amount detecting unit, a compensator, a set accessories and water adding amount computing unit, and an accessories and water adding control unit; and the control device is used for correcting set accessories adding amount by using actual accessories adding amount and controlling the amount of added accessories based on the corrected set accessories adding amount, and correcting set water adding amount by using actual water adding amount and controlling amount of added water based on the corrected set water adding amount. The control device effectively overcomes the defects of large actual fluctuation of concentration of filling and higher accessories consumption cost by a continuous preparation 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 of the filling.
Description
Technical field
The present invention relates to a kind of control appliance and method that is used to control filling slurry concentration, particularly a kind of control appliance and method that is used for controlling to mine worked-out section tailings interpolation auxiliary material and water.
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.
Domestic most of continuous preparation technology of slip that adopts: wherein tailings, cement and water are being sent into agitation tank continuously, the filling slurry that will form after will stirring simultaneously is transported to underground goaf from the discharge gate of agitation tank.
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 enter 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 can carry at pipeline in other words under certain pipeline transport condition 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 (as cement) for example, consuming cost.
Secondly, though the amount that the existing continuous preparation technology of slip also utilizes the FEEDBACK CONTROL of the pulp density of the discharge in the agitation tank to add water to agitation tank, but its control effect is not very desirable, and main cause has agitation tank to have hysteresis quality, and the time that lags behind also fluctuates.In addition, the daily demarcation inconvenience of densimeter of agitation tank below, precision is usually the end of than.The change in concentration of the casting resin of emitting from agitation tank is bigger like this, has influenced filling effect.
Summary of the invention:
The present invention is intended to overcome above-mentioned shortcoming of the prior art, provides a kind of and is used for control to mine worked-out section tailings interpolation auxiliary material and water controlling equipment and method.
According to embodiments of the invention, a kind of control appliance that is used for controlling to tailings interpolation auxiliary material and water is proposed, comprising: dry sand amount and water content are calculated the unit, are used for calculating respectively dry sand amount and the water content that flows out to the tailings in the agitation tank from the sand storehouse; The initial addition computing unit of auxiliary material and water, be used to set the proportioning of dry sand and auxiliary material and the proportioning of setting dry sand and water, utilize the proportioning and the dry sand amount of described dry sand and auxiliary material to calculate the initial addition of auxiliary material, and utilize proportioning, dry sand amount and the water content meter of described dry sand and water to calculate the initial addition of auxiliary material and water; The actual addition detecting unit of auxiliary material and water is used for detecting the actual addition of the auxiliary material that adds to tailings, and is used for detecting the actual addition of the water that adds to tailings; Expansion loop, the actual addition of auxiliary material that this expansion loop utilization receives from the actual addition detecting unit of auxiliary material and water and calculate the auxiliary material offset that the initial addition of described auxiliary material is compensated from the initial addition of auxiliary material that described auxiliary material and water primary quantity addition computing unit receive, and utilize from the actual addition of water of auxiliary material and the actual addition detecting unit reception of water with from the initial addition of water of described auxiliary material and the reception of water primary quantity addition computing unit and calculate the water offset that the initial addition of described water is compensated; Auxiliary material and water are set the addition computing unit, this auxiliary material and water are set the addition computing unit and are utilized described auxiliary material offset that the initial addition of described auxiliary material is compensated, set addition so that calculate auxiliary material, and utilize described water offset that the initial addition of described water is compensated, set addition so that calculate water outlet; Auxiliary material and water add control module, and this auxiliary material and water add control module and receives described auxiliary material setting addition and water setting addition from auxiliary material and water setting addition computing unit, receive actual addition of described auxiliary material and the actual addition of water from described auxiliary material and the actual addition detecting unit of water, utilize the described auxiliary material of the actual addition correction of described auxiliary material to set addition and set the amount of the auxiliary material that addition control feeder adds based on revised auxiliary material in tailings, and the amount of utilizing the described water of the actual addition correction of described water to set addition and in tailings, add water based on revised setting addition control water compensating valve.
The further embodiment according to the present invention, described dry sand amount and water content are calculated the unit and comprised: 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; Calculate device with dry sand amount and water content, be used for utilizing described flow and concentration to calculate dry sand amount and the water content that flows out to the tailings in the agitation tank from the sand storehouse respectively.
The further embodiment according to the present invention, the initial addition computing unit of described auxiliary material and water comprises: comparison measurer is used to set the proportioning of dry sand and auxiliary material and the proportioning of dry sand and water; With auxiliary material and the initial addition calculator of water, be used to utilize the proportioning of dry sand and auxiliary material and dry sand amount to calculate the initial addition of auxiliary material, and utilize proportioning, dry sand amount and the water content meter of dry sand and water to calculate the initial addition of water.
And then interior auxiliary material offset and the water offset of predetermined amount of time that auxiliary material and water setting addition computing unit utilize described auxiliary material and water expansion loop to calculate compensates initial addition of auxiliary material and the initial addition of water respectively.
Alternatively, auxiliary material and water are set all auxiliary material offset and water offsets constantly of past that the addition computing unit utilizes described auxiliary material and water expansion loop to calculate and respectively initial addition of auxiliary material and the initial addition of water are compensated.
The further embodiment according to the present invention, the actual addition detecting unit of described auxiliary material and water comprises: detect the first flow meter of discharge, for example electromagnetic flowmeter; With second flow meter that detects the auxiliary material flow, for example impact flow meter.
According to another embodiment of the present invention, propose auxiliary material and water are added in a kind of control in tailings control method, may further comprise the steps: calculate the dry sand amount and the water content that flow out to from the sand storehouse the tailings in the agitation tank; Set the proportioning of dry sand, auxiliary material and water, utilize the proportioning of described dry sand, auxiliary material and water and dry sand amount and water content meter to calculate auxiliary material and the initial addition of water; Actual addition of the auxiliary material that detection is added in tailings and the actual addition of water; Calculate the auxiliary material offset that the initial addition of described auxiliary material is compensated according to actual addition of auxiliary material and the initial addition of auxiliary material, and calculate the water offset that the initial addition of described water is compensated according to actual addition of water and the initial addition of water; Utilize described auxiliary material offset and described water offset that initial addition of described auxiliary material and the initial addition of water are compensated, auxiliary material is set addition and water is set addition so that calculate; With utilize the described auxiliary material of the actual addition correction of described auxiliary material to set addition and set the amount of the auxiliary material that addition control feeder adds in tailings based on revised auxiliary material, utilize the described water of the actual addition correction of described water to set addition and control water compensating valve adds water in tailings amount based on revised setting addition.
The further embodiment according to the present invention, utilize actual addition of auxiliary material and the initial addition of auxiliary material to calculate the auxiliary material offset in the predetermined amount of time and utilize the actual addition of water and the initial addition of water calculates water offset in the predetermined amount of time, and utilize predetermined amount of time interior auxiliary material offset and water offset respectively initial addition of auxiliary material and the initial addition of water to be compensated.
According to a further embodiment of the invention, utilize actual addition of auxiliary material and the initial addition of auxiliary material calculate over all constantly the auxiliary material offset and utilize the actual addition of water and the initial addition of water calculates over all water offsets constantly, and utilize the auxiliary material offset and the water offsets in all moment in past respectively initial addition of auxiliary material and the initial addition of water to be compensated.
Compared with prior art have following advantage at least according to control appliance of the present invention and method: control appliance of the present invention has adopted a kind of control of imitating the prepared in batches process, it is low to have overcome in the prior art interpolation precision of auxiliary material and water effectively, the shortcoming that the actual fluctuation of casting resin concentration is big, ratio of adjuvant increases, the supplementary product onsumption cost increases.Even the addition of auxiliary material and water is owing to the variation that lags behind or other reason does not have to catch up with the tailings discharge 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 proportion speed of each material in the every batch of soft slip, stirring action by agitation tank again, more uniform filling slurry can be obtained, and the concentration of slip can be controlled more accurately.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 the continuous preparation technology's continuity of casting resin again.
Description of drawings
Fig. 1 is the schematic diagram that is used for carrying to mine worked-out section the filling system of filling slurry;
Fig. 2 is the schematic diagram that adds the control appliance of auxiliary material according to the control of the embodiment of the invention in tailings;
Fig. 3 controls the schematic diagram that adds the control appliance of auxiliary material in tailings according to another embodiment of the present invention;
Fig. 4 is the flow chart that adds the control method of auxiliary material and water according to the control of the embodiment of the invention in tailings;
Fig. 5 controls the flow chart that adds the control method of auxiliary material and water in tailings according to another embodiment of the present invention.
The specific 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.Be used to explain the present invention below by the embodiment that is described with reference to the drawings, described 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 schematic diagram from the filling system of filling slurry to mine worked-out section that carry.Referring to Fig. 1, described 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, described auxiliary material for example is a cementitious matter (as cement), but is not limited to this.Tailings, auxiliary material and water are transported in the agitation tank 3 by pipeline separately, stir the back through agitation tank 3 and form filling slurry, and the filling slurry that mixes is transported in the goaf by device for filling 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, by control electric control valve 1.4 and tailings control valve 1.1, can control tailings and flow out to 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 dry sand quality and water content the tailings in the sand storehouse flows out to agitation tank 3.
Be provided with feeder 2.1 and auxiliary material flow meter 2.4 between auxiliary material storehouse 2 and agitation tank 3, 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 by frequency converter 2.3 by control module, rotating speed by 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 carrying in agitation tank 3 is to be determined by the proportioning of the dry sand amount the tailings that supplies in sand storehouse 1 in the agitation tank 3 and predefined dry sand amount and auxiliary material.
In the prior art, though also utilizing the actual addition of detected auxiliary material revises the initial addition of auxiliary material of the control module that sends to feeder 2.1, yet, the pairing tailings of actual addition of the auxiliary material that calculates in this process has entered 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.
Water injecting pipeline 4 is provided with flow meter 4.1 and water compensating valve 4.2, can measure the water yield that is injected in the agitation tank 3 according to flow meter 4.1, and water compensating valve 4.2 can be controlled the size of rate of water make-up.
In addition, can be provided with flow meter 5.1 on the transfer pipeline 5, electric control valve 5.2 and densimeter 5.3.
In the prior art, as mentioned above, though amount from water to agitation tank that also utilize the FEEDBACK CONTROL of the pulp density of densimeter 5.3 detected discharges in agitation tank to add, but its control effect is not very desirable, main cause has the concentration detection in the agitation tank to have hysteresis quality, and the time that lags behind also fluctuates.In addition, the daily demarcation inconvenience of densimeter of agitation tank below, precision is lower usually.
Can make the balance that the also timely amount of adjusting auxiliary material of reflection fast reaches casting resin to the fluctuation of tailings discharge, auxiliary material discharge and the water yield of adding according to control method of the present invention and control appliance.That is to say, except the control module (being that auxiliary material and water add control module) that the actual addition of auxiliary material and water is fed back to feeder and water compensating valve 4.2, also compensate simultaneously with the actual addition of auxiliary material and water initial addition to auxiliary material and water, so that obtain the setting addition of auxiliary material and water respectively, and the control module of feeder and water compensating valve utilizes the actual addition of auxiliary material and water further the setting addition of auxiliary material and water to be revised respectively, and this will be discussed in more detail below.
Describe the control appliance that adds auxiliary material and water according to the control of the embodiment of the invention in the mine worked-out section tailings below with reference to Fig. 2, Fig. 2 illustrates the schematic diagram that adds the control appliance of auxiliary material and water according to the control of the embodiment of the invention in tailings.
As shown in Figure 2, the control appliance that is used for controlling to mine worked-out section tailings interpolation auxiliary material and water according to the embodiment of the invention comprises: dry sand amount and water content are calculated unit 7, the initial addition computing unit 8 of auxiliary material and water, auxiliary material and water are set addition computing unit 9, auxiliary material and water add control module 10, actual addition detecting unit 12 of auxiliary material and water and expansion loop 11.In an embodiment of the present invention, auxiliary material and water interpolation control module 10 for example can be the PID controller.
Dry sand amount and water content are calculated unit 7 and are used for calculating respectively dry sand amount and the water content that flows out to the tailings in the agitation tank 3 from the sand storehouse, and dry sand amount and the water content that calculates sent to auxiliary material and the initial addition computing unit 8 of water.The initial addition computing unit 8 of auxiliary material and water preestablishes the proportioning of dry sand and auxiliary material and the proportioning of dry sand and water, and utilizes proportioning, dry sand amount and the water content meter of described dry sand and water to calculate the initial addition of auxiliary material and water.
The actual addition detecting unit 12 of auxiliary material and water is used for detecting the actual addition of auxiliary material that the tailings in agitation tank adds and water and the actual addition of described auxiliary material and water is fed back to described auxiliary material and water adds control module 10.
Auxiliary material and water are set addition computing unit 9 and are utilized described auxiliary material offset that the initial addition of described auxiliary material is compensated, set addition so that calculate auxiliary material, and utilize described water offset that the initial addition of described water is compensated, set addition so that calculate water outlet.
Auxiliary material that auxiliary material and water setting addition computing unit 9 calculate and water are set addition and are sent to auxiliary material and water interpolation control module 10.Auxiliary material and water add actual addition that control module 10 utilizes the auxiliary material that receives from auxiliary material and the actual addition detecting unit 12 of water and water and revise respectively and set auxiliary material that addition computing unit 9 receives and water from auxiliary material and water and set addition and set the amount of the auxiliary material that addition control feeder 3.1 adds and set addition based on revised water and control the water yield that water compensating valve 4.2 adds in tailings to tailings based on revised auxiliary material.
Need to prove, the incipient stage of adding, because auxiliary material and the actual addition detecting unit 12 of water also do not detect the interpolation of auxiliary material and/or water, so auxiliary material and water add, and control module 10 is controlled feeder 2.1 based on the initial addition of auxiliary material and water respectively and water compensating valve 4.2 adds auxiliary material and water in agitation tank.
Be used for controlling the control appliance that adds auxiliary material and water to tailings according to the embodiment of the invention, not only the actual addition with detected auxiliary material and water sends to auxiliary material and water interpolation control module 10, and detected auxiliary material and the actual addition of water sent to expansion loop 11, expansion loop 11 utilizes the initial addition of the actual addition of auxiliary material and water and auxiliary material and water to calculate to the auxiliary material offset of the initial addition of auxiliary material with to the water offset of the initial addition of water, auxiliary material and water are set addition computing unit 9 and are utilized the offset of described auxiliary material and water respectively the initial addition of auxiliary material and water to be compensated, thereby obtain the setting addition of auxiliary material and water, auxiliary material and water add control module 10 and utilize from auxiliary material and the auxiliary material of actual addition detecting unit 12 feedbacks of water and the actual addition of water the setting addition of auxiliary material and water is revised, and based on revised auxiliary material set addition control feeder 2.1 to agitation tank 3 add auxiliary materials and based on revised water set amount control water compensating valve 4.2 to agitation tank interpolation water.Therefore, can be within a certain period of time more easily the difference between the actual addition of the initial addition of auxiliary material and water and auxiliary material and water be filled according to control appliance of the present invention, the actual addition of auxiliary material and water is with respect to not having hysteresis with the actual addition of auxiliary material and water for corresponding tailings thus, thereby can control the actual addition of auxiliary material and water as required more accurately, the addition fluctuation of auxiliary material and water is little, do not need to strengthen the setting value of the proportioning of dry sand and auxiliary material, thereby reduced auxiliary material, cement for example, addition, reduced consuming cost, and the concentration stabilize of casting resin.
Control the schematic diagram that in tailings, adds the control appliance of auxiliary material and water according to another embodiment of the present invention below with reference to Fig. 3 description.
As shown in Figure 3, described dry sand amount and water content are calculated 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 by the concentration value of the tailings that measures and quality and the water content that flow value just can calculate dry sand.
The initial addition computing unit 8 of auxiliary material and water comprises: be used to set the comparison measurer 8.2 of proportioning of the proportioning of dry sand and auxiliary material and dry sand and water and the auxiliary material and the initial addition calculator 8.1 of water of auxiliary material and water.The initial addition that dry sand quality that proportioning that the initial addition calculator 8.1 of auxiliary material and water sets according to comparison measurer 8.2 and dry sand amount calculator 7.3 calculate and water content calculate corresponding auxiliary material and water respectively.
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 and water feeds back to auxiliary material and water interpolation control module 10 with the actual addition of detected auxiliary material and water.Simultaneously, the actual addition detecting unit 12 of auxiliary material and water is transported to expansion loop 11 with the actual addition of detected auxiliary material and water.In addition, the auxiliary material that the initial addition calculator 8.1 of auxiliary material and water is calculated and the initial addition of water also send to expansion loop 11, expansion loop 11 utilizes the described actual addition of auxiliary material and water and the initial addition of auxiliary material and water to calculate auxiliary material offset that the initial addition of auxiliary material is compensated and the water offset that the initial addition of water is compensated respectively, and described auxiliary material and water offset are sent to auxiliary material then and water is set addition computing unit 9.
Auxiliary material and water are set offset that addition computing unit 9 utilizes described auxiliary material and water the initial addition of auxiliary material and water are compensated, so that calculate the setting addition of auxiliary material and water.
The auxiliary material that auxiliary material and water setting addition computing unit 9 calculate and the setting addition of water send to auxiliary material and water interpolation control module 10.Auxiliary material and water add actual addition that control module 10 utilizes the auxiliary material that receives from auxiliary material and the actual addition detecting unit 12 of water and water and revise respectively from auxiliary material and water and set the setting addition of the auxiliary material of addition computing unit 9 receptions and water and control the water yield that auxiliary material amount that feeder 3.1 adds and water compensating valve 4.2 add respectively based on the setting addition of revised auxiliary material and water to tailings in tailings.
More specifically, comparison measurer 8.2 is in the proportioning that can preestablish or store dry sand and auxiliary material and dry sand and water, and said ratio is that the requirement of the filling slurry that obtains is as required set.The ratio of auxiliary material and tailings and dry sand and water can 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 and water just calculates the initial addition of auxiliary material and water according to the proportioning of setting like this.
According to embodiments of the invention, the actual addition detecting unit 12 of auxiliary material and water comprises first flow meter that detects discharge and second flow meter that detects the auxiliary material flow, described first flow meter is an electromagnetic flowmeter for example, and described second flow meter for example can be impact flow meter.
The further embodiment according to the present invention, interior auxiliary material offset and the water offset of predetermined amount of time that auxiliary material and water setting addition computing unit 9 utilize described expansion loop 11 to calculate compensates auxiliary material and the initial addition of water respectively, this time compensation that is referred to as to exceed.Alternatively, all auxiliary material offset and water offsets constantly of past that auxiliary material and water setting addition computing unit 9 utilize described expansion loop 11 to calculate compensate auxiliary material and the initial addition of water respectively, and this is referred to as omnidistance compensation.This will be described in detail below.
Below with reference to Fig. 4 describe according to the embodiment of the invention be used for control the control method of adding auxiliary material and water to the mine worked-out section tailings, Fig. 4 illustrates the flow chart that adds the control method of auxiliary material and water according to the control of the embodiment of the invention in tailings.
As shown in Figure 4, at first calculate dry sand amount and water content (step S1) the tailings in the sand storehouse flows to agitation tank 3.The proportioning (step S2) of the water of then setting the proportioning of dry sand and the auxiliary material that need add and dry sand and need add in tailings in tailings, described auxiliary material is a cement for example, but is not limited to cement.Need to prove that the proportioning of the proportioning of dry sand and auxiliary material and dry sand and water also can preestablish, rather than after calculating dry sand amount and water content, 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 described order.
After the proportioning of the proportioning of having set dry sand and auxiliary material and dry sand and water, the auxiliary material that utilizes described dry sand amount and proportioning to calculate respectively in tailings, to add and the initial addition (step S3) of water.In the process of adding auxiliary material and water, the auxiliary material that measurement is added in tailings and the actual addition (step S4) of water.The actual addition of described auxiliary material and water is fed back to the initial addition of auxiliary material and water, thereby so that compensate the setting addition (step S5) that the initial addition of described auxiliary material and water obtains auxiliary material and water.Simultaneously, utilize the actual addition correction auxiliary material of described auxiliary material and water and the setting addition (step S6) of water respectively.At last, the auxiliary material that control is added in tailings based on the setting addition of revised auxiliary material and water respectively and the amount (step S7) of water.
Therefore, according to control method of the present invention, utilize the auxiliary material and the actual addition compensation auxiliary material of water and the initial addition of water that detect, obtain the setting addition of auxiliary material and water, simultaneously, utilize the actual addition correction auxiliary material of auxiliary material and water and the setting addition of water again, last, control the interpolation of auxiliary material and water respectively based on the setting addition of revised auxiliary material and water.Therefore, the actual addition of auxiliary material and water is with respect to not having hysteresis with the actual addition of auxiliary material and water for corresponding tailings, thereby can control the actual addition of auxiliary material as required more accurately, the addition fluctuation of auxiliary material is little, does not need to strengthen the setting value of described proportioning, thereby reduced auxiliary material, cement for example, addition, reduced consuming cost, and form the filling slurry concentration stabilize, the control accuracy height.
The control method that is used for according to another embodiment of the present invention controlling to tailings interpolation auxiliary material and water is described below with reference to Fig. 5.
In the embodiment show in figure 5, dry sand amount and the water content the tailings of calculating in sand storehouse 1 flows out to agitation tank 3 comprises that specifically 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 dry sand quality and the water content utilized in described flow and the concentration calculating tailings.
As mentioned above, the proportioning of dry sand and auxiliary material and water is set as required, the ratio of auxiliary material and water and tailings can be set in respectively 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 and water and the initial addition of calculating auxiliary material and water, yet these two steps can be merged into a step, are for example finished by above-mentioned auxiliary material and the initial addition computing unit 8 of water.
According to the present invention, utilize the actual addition of auxiliary material and water to compensate the initial addition of auxiliary material and water so that obtain auxiliary material and the setting addition of water; Utilize auxiliary material and the described auxiliary material of actual addition correction of water and the setting addition of water of described measurement.In tailings, add auxiliary material and water according to the setting addition control of revised auxiliary material and water respectively.Compensation by herein and correction have overcome because continuous-feeding makes tailings and bigger, the unmanageable shortcoming of auxiliary material actual ratio fluctuation.Less because fluctuate, need not improve the proportioning of sneaking into of auxiliary material, reduced auxiliary material mixed volume, reduced cost, and pulp density is stable.
As mentioned above, according to control method of the present invention, the control method of imitation prepared in batches process, even the addition of the auxiliary material of system and water is at short notice because the variation that hysteresis or other reasons are not caught up with the tailings amount of feeding, but use the 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 mentioned above, calculate auxiliary material offset and water offset and utilize the offset of described auxiliary material and water to compensate the initial addition of described auxiliary material and water respectively for the actual addition of the initial addition that utilizes auxiliary material and water and detected auxiliary material and water, two kinds of compensation methodes are arranged: omnidistance penalty method and limit time penalty method.
So-called omnidistance penalty method is about to all moment auxiliary material offsets of past and water offset and all compensates in a moment in future.The specific algorithm of omnidistance compensation is as follows:
| 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＝x2 |
| 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, difference in cycle is auxiliary material and water and the actual auxiliary material that adds and the difference of water that this time period planted agent adds, and the auxiliary material that should add and the amount of water can calculate according to dry sand amount and water content thereof easily by comparison measurer.Here, the amount of the auxiliary material that should add and the water yield can be calculated by formula 1 and formula 2 respectively.
In the formula: Q
c---need the amount of the auxiliary material that adds 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---need the water yield of adding, kg in the computing cycle;
C
2---the filling slurry concentration set point.
So-called limit time penalty method promptly only will be set interior constantly offset the initial addition of auxiliary material and water will be compensated.The specific algorithm of limit time penalty method is as follows:
The auxiliary material amount and the water yield that should add in the limit time backoff algorithm equally also can be calculated by formula 1 and formula 2 respectively.It is the span difference of offset.Suppose that the compensation number of times that limits is 3 times, then limit time backoff algorithm is as shown in the table.When omnidistance as can be seen backoff algorithm compensates at every turn former casting resin is treated 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＝x2 |
| 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 that following advantage is arranged: according to preparation technology's requirement, need be when usually each packing job begins to the underground filling casting resin of water or low concentration for a moment with lubrication circuit, and because sand storehouse when just having begun to put sand, sand storehouse fluidisation of need spraying water, 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 casting resin proportioning trend in the agitation tank is normal.So the error of measuring is less.
Add auxiliary material and water though described above in tailings, yet, be understandable that tailings can be with other major ingredients replacements, gangue for example, this is equally within the scope of the invention.
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 (11)
1, a kind of being used for controlled the control appliance that adds auxiliary material and water to tailings, it is characterized in that: comprising:
Dry sand amount and water content are calculated the unit, are used for calculating respectively dry sand amount and the water content that flows out to the tailings in the agitation tank from the sand storehouse;
The initial addition computing unit of auxiliary material and water, be used to set the proportioning of dry sand and auxiliary material and the proportioning of setting dry sand and water, utilize the proportioning and the dry sand amount of described dry sand and auxiliary material to calculate the initial addition of auxiliary material, and utilize proportioning, dry sand amount and the water content meter of described dry sand and water to calculate the initial addition of auxiliary material and water;
The actual addition detecting unit of auxiliary material and water is used for detecting the actual addition of the auxiliary material that adds to tailings, and is used for detecting the actual addition of the water that adds to tailings;
Expansion loop, the actual addition of auxiliary material that this expansion loop utilization receives from the actual addition detecting unit of auxiliary material and water and calculate the auxiliary material offset that the initial addition of described auxiliary material is compensated from the initial addition of auxiliary material that described auxiliary material and water primary quantity addition computing unit receive, and utilize from the actual addition of water of auxiliary material and the actual addition detecting unit reception of water with from the initial addition of water of described auxiliary material and the reception of water primary quantity addition computing unit and calculate the water offset that the initial addition of described water is compensated;
Auxiliary material and water are set the addition computing unit, this auxiliary material and water are set the addition computing unit and are utilized described auxiliary material offset that the initial addition of described auxiliary material is compensated, set addition so that calculate auxiliary material, and utilize described water offset that the initial addition of described water is compensated, set addition so that calculate water outlet;
Auxiliary material and water add control module, and this auxiliary material and water add control module and receives described auxiliary material setting addition and water setting addition from auxiliary material and water setting addition computing unit, receive actual addition of described auxiliary material and the actual addition of water from described auxiliary material and the actual addition detecting unit of water, utilize the described auxiliary material of the actual addition correction of described auxiliary material to set addition and set the amount of the auxiliary material that addition control feeder adds based on revised auxiliary material in tailings, and the amount of utilizing the described water of the actual addition correction of described water to set addition and in tailings, add water based on revised setting addition control water compensating valve.
2, according to claim 1 being used for controlled the control appliance that adds auxiliary material and water to tailings, it is characterized in that: described dry sand amount and water content are calculated the unit and are comprised:
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 and water content are calculated device, are used for utilizing described flow and concentration to calculate dry sand amount and the water content that flows out to the tailings in the agitation tank from the sand storehouse respectively.
3, according to claim 1 being used for controlled the control appliance that adds auxiliary material and water to tailings, and it is characterized in that: the initial addition computing unit of described auxiliary material and water comprises:
Comparison measurer is used to set the proportioning of dry sand and auxiliary material and the proportioning of dry sand and water; With
The initial addition calculator of auxiliary material and water is used to utilize the proportioning of dry sand and auxiliary material and dry sand amount to calculate the initial addition of auxiliary material, and utilizes proportioning, dry sand amount and the water content meter of dry sand and water to calculate the initial addition of water.
4, control the control appliance that adds auxiliary material and water to tailings according to each described being used among the claim 1-3, it is characterized in that: interior auxiliary material offset and the water offset of predetermined amount of time that auxiliary material and water setting addition computing unit utilize described auxiliary material and water expansion loop to calculate compensates initial addition of auxiliary material and the initial addition of water respectively.
5, control the control appliance that adds auxiliary material and water to tailings according to each described being used among the claim 1-3, it is characterized in that: all auxiliary material offset and water offsets constantly of past that auxiliary material and water setting addition computing unit utilize described auxiliary material and water expansion loop to calculate compensate initial addition of auxiliary material and the initial addition of water respectively.
6, control the control appliance that adds auxiliary material and water to tailings according to each described being used among the claim 1-3, it is characterized in that: the actual addition detecting unit of described auxiliary material and water comprises:
Detect the first flow meter of discharge; With
Detect second flow meter of auxiliary material flow.
7, control the control appliance that adds auxiliary material and water to tailings according to being used for described in the claim 6, it is characterized in that: described first flow is counted electromagnetic flowmeter.
8, control the control appliance that adds auxiliary material and water to tailings according to being used for described in the claim 6, it is characterized in that: described second flow is counted impact flow meter.
9, a kind of control method that is used for control to tailings interpolation auxiliary material and water may further comprise the steps:
Calculating flows out to dry sand amount and the water content the tailings in the agitation tank from the sand storehouse;
Set the proportioning of dry sand, auxiliary material and water, utilize the proportioning of described dry sand, auxiliary material and water and dry sand amount and water content meter to calculate auxiliary material and the initial addition of water;
Actual addition of the auxiliary material that detection is added in tailings and the actual addition of water;
Calculate the auxiliary material offset that the initial addition of described auxiliary material is compensated according to actual addition of auxiliary material and the initial addition of auxiliary material, and calculate the water offset that the initial addition of described water is compensated according to actual addition of water and the initial addition of water;
Utilize described auxiliary material offset and described water offset that initial addition of described auxiliary material and the initial addition of water are compensated, auxiliary material is set addition and water is set addition so that calculate; With
Utilize the described auxiliary material of the actual addition correction of described auxiliary material to set addition and set the amount of the auxiliary material that addition control feeder adds in tailings, utilize the described water of the actual addition correction of described water to set addition and control water compensating valve adds water in tailings amount based on revised setting addition based on revised auxiliary material.
10, the control method that is used for control to tailings interpolation auxiliary material and water according to claim 9, wherein utilize actual addition of auxiliary material and the initial addition of auxiliary material to calculate the auxiliary material offset in the predetermined amount of time and utilize the actual addition of water and the initial addition of water calculates water offset in the predetermined amount of time, and utilize predetermined amount of time interior auxiliary material offset and water offset respectively initial addition of auxiliary material and the initial addition of water to be compensated.
11, according to auxiliary material and water are added in the control method from control to tailings that is used for described in the claim 9, wherein utilize actual addition of auxiliary material and the initial addition of auxiliary material calculate over all constantly the auxiliary material offset and utilize the actual addition of water and the initial addition of water calculates over all water offsets constantly, and utilize the auxiliary material offset and the water offsets in all moment in past respectively initial addition of auxiliary material and the initial addition of water to be compensated.
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| CN2007101782627A CN101451440B (en) | 2007-11-28 | 2007-11-28 | Control method and control device for controlling auxiliary material and water addition to tailings |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103216261A (en) * | 2012-01-21 | 2013-07-24 | 飞翼股份有限公司 | Automatic filling system for mining under villages, railways and water |
| CN113290695A (en) * | 2021-07-26 | 2021-08-24 | 中国恩菲工程技术有限公司 | Filling slurry concentration regulation and control method and system based on current signal feedback |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4059963A (en) * | 1976-08-19 | 1977-11-29 | Joy Manufacturing Company | Method of mine backfilling and material therefor |
| CN1050170C (en) * | 1996-01-19 | 2000-03-08 | 长沙矿山研究院 | Underground filling material extrusion conveying method and device |
| CN1782327A (en) * | 2004-12-03 | 2006-06-07 | 北京中矿机电工程技术研究所 | Method for coal mine waste rock pipeline transporting and tunnel filling and injecting slurry |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103216261A (en) * | 2012-01-21 | 2013-07-24 | 飞翼股份有限公司 | Automatic filling system for mining under villages, railways and water |
| CN103216261B (en) * | 2012-01-21 | 2015-10-28 | 飞翼股份有限公司 | Three times Mining automation filling systems |
| CN113290695A (en) * | 2021-07-26 | 2021-08-24 | 中国恩菲工程技术有限公司 | Filling slurry concentration regulation and control method and system based on current signal feedback |
| CN113290695B (en) * | 2021-07-26 | 2021-11-26 | 中国恩菲工程技术有限公司 | Filling slurry concentration regulation and control method and system based on current signal feedback |
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| CN101451440B (en) | 2010-04-14 |
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