CN114252140A - Slurry shield muck metering system and method - Google Patents
Slurry shield muck metering system and method Download PDFInfo
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- CN114252140A CN114252140A CN202111605000.0A CN202111605000A CN114252140A CN 114252140 A CN114252140 A CN 114252140A CN 202111605000 A CN202111605000 A CN 202111605000A CN 114252140 A CN114252140 A CN 114252140A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
- G01F11/282—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement for fluent solid material not provided for in G01F11/34, G01F11/40, G01F11/46
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Abstract
The invention discloses a slurry shield muck metering system and a slurry shield muck metering method, wherein the slurry shield muck metering system comprises a muck box, a muck height sensor, a counter and a control system; the residue soil box is of a cover-free box body structure and is used for containing residue soil discharged by the mud-water separation system; the bottom of the residue soil box is provided with an opening and closing gate; the muck height sensor is arranged at a preset height on the inner wall of the muck box, and the output end of the muck height sensor is connected with the input end of the control system; the input end of the counter is connected with the first output end of the control system, and the second output end of the control system is connected with the control end of the opening and closing gate; the invention utilizes the counter to count the slag discharging instruction, the open-close gate responds to the slag discharging instruction to discharge the slag with the preset volume in the slag box, and the accurate measurement of the slag discharged by the mud-water separation system is realized according to the counting result of the slag discharging instruction and the preset slag discharging volume of the slag, the slurry discharging proportion is not required to be considered, the accuracy of the measuring result is ensured, the structure is simple, and the operation is convenient.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a slurry shield muck metering system and method.
Background
With the increasing shortage of urban land and the gradual increase of urban traffic pressure, the shield construction method has become a preferred construction method of shield tunnels due to the large-area popularization and application of the advantages of rapidness, environmental protection, safety, high quality and the like in China; the slurry shield has the advantages of good supporting effect on the tunnel face, small influence on the ground and the settlement of a building, capability of accurately and quickly controlling the working pressure, convenience in stopping and maintaining pressure, convenience in replacing cutters and the like, and is more suitable for large-diameter tunnels.
At present, the engineering field usually adopts the product of the difference of the specific gravity of the inlet and the discharge of slurry of a circulation system in a slurry shield machine and the total circulation amount to determine the slag discharge amount of the slurry shield, when the slag discharge amount is measured by adopting the method, more accurate data is required to be obtained, the stratum soil quality is required to be completely dissolved in slurry, otherwise, the specific gravity of the discharge of the slurry cannot be accurately measured, and the error is larger; wherein the geological soil layer is full-face silt or full-face silt stratum; particularly, in a clay stratum with large rock content on the section or insoluble in slurry, the discharged slurry contains a large amount of stone slag or clay balls, so that the density meter cannot accurately measure the slurry discharging viscosity, and the slurry discharging amount of the slurry shield cannot be accurately calculated; excessive slag discharge (also called overbreak) causes serious damage to the stratum, the ground subsides if the slag discharge is light, the ground collapses to form holes if the slag discharge is heavy, and most of the ground collapses caused by the domestic shield construction is caused by overbreak.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a slurry shield muck metering system and a use method thereof, and aims to solve the technical problem that the metering result error is large because the specific gravity of discharged slurry cannot be accurately measured when the slag discharge amount of a slurry shield is determined in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a slurry shield muck metering system which comprises a muck box, a muck height sensor, a counter and a control system, wherein the muck box is connected with the counter; the residue soil box is of a cover-free box body structure and is used for containing residue soil discharged by the mud-water separation system; the bottom of the residue soil box is provided with an opening and closing gate; the muck height sensor is arranged at a preset height on the inner wall of the muck box, and the output end of the muck height sensor is connected with the input end of the control system; the input end of the counter is connected with the first output end of the control system, and the second output end of the control system is connected with the control end of the opening and closing gate;
the muck height sensor is used for acquiring the muck height in the muck collecting box and transmitting the acquired muck height information to the control system;
the control system is used for comparing the received slag soil height with a preset slag discharging height, generating a slag discharging instruction and sending the slag discharging instruction to the counter and the opening and closing gate;
the counter is used for counting the received deslagging instruction to obtain the accumulated deslagging frequency;
and the opening and closing gate is used for responding to the received slag discharging instruction and executing opening or closing actions.
Furthermore, a liquid level sensor or a distance sensor is adopted as the residue soil height sensor; the residue soil is stone residue or clay balls which are not dissolved in the slurry.
Further, the counter adopts a standard electronic counter; after the standard electronic counter receives a slag discharge instruction every time, counting +1 operation is executed; the standard electronic counter is also provided with a zero button.
Furthermore, the control system adopts a PLC controller.
Furthermore, the opening and closing gate comprises a split gate and a driving mechanism for driving the split gate to open and close; the split gate is rotatably arranged at the bottom of the residue soil box; the output end of the driving mechanism for driving the split gate to open and close is connected with the split gate, and the control end of the driving mechanism for driving the split gate to open and close is connected with the output end of the control system.
Furthermore, the driving mechanism for driving the split gate to open and close is a hydraulic driving mechanism or a motor driving mechanism.
Furthermore, the opening and closing gate is also used for executing the closing action at a preset time interval after the opening action is executed.
Furthermore, the slag-soil box is arranged at a slag discharge port of a mud-water separation system of the mud-water shield.
The invention also provides a slurry shield muck metering method, and the slurry shield muck metering system is utilized, and the method specifically comprises the following steps:
the muck box is used for containing muck discharged by the mud-water separation system;
acquiring residue soil height information of a residue soil box in real time by using a residue soil height sensor; when the height of the slag in the slag box reaches a preset slag discharging height, the slag height sensor sends the height of the slag to the control system;
comparing the received slag soil height with preset slag discharging height information by using a control system to generate a slag discharging instruction, and sending the slag discharging instruction to a counter and an opening and closing gate;
counting the received deslagging instruction by using a counter to obtain the accumulated deslagging frequency;
after the opening and closing gate receives a slag discharge instruction, opening or closing actions are executed;
repeating the operation to realize the measurement of the residue soil discharged by the mud-water separation system;
after the shield tunneling progress is preset, calculating the set containing volume of the muck box according to the preset slag discharging height of the muck box;
and calculating the dry slag mass discharged by the mud-water separation system according to the set containing volume of the slag-soil box, the density of the slag soil and the accumulated slag discharge times to obtain the mud-water shield slag soil metering result.
Further, a formula for calculating the mass of the dry slag discharged by the mud-water separation system is as follows:
m＝V×ρ×N
wherein m is the dry slag mass discharged by the mud-water separation system, V is the set containing volume of the slag soil box, rho is the density of the slag soil, and N is the accumulated slag discharge times.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a slurry shield muck metering system and a slurry shield muck metering method, wherein a muck box is arranged, an opening-closing gate is arranged at the bottom of the muck box, and a muck height sensor is arranged at a preset height inside the muck box; the control system outputs a slag discharging instruction according to comparison between the slag height information transmitted by the slag height sensor and a preset slag discharging height; utilize the counter to count row's sediment instruction, the gate that opens and shuts responds row's sediment instruction, realizes discharging the dregs of the interior volume of presetting of dregs case, according to the count result of row's sediment instruction and the sediment volume of presetting row of dregs, realizes the accurate measurement to mud-water separation system discharge dregs, need not to consider row's thick liquid proportion, has ensured the accuracy nature of measuring result, simple structure, convenient operation.
Furthermore, the counter adopts a standard electronic counter, and the zero setting button is arranged on the standard electronic counter, so that the accuracy and convenience of the counting process are realized, and the requirement of repeated metering is met.
Furthermore, the opening and closing gate is combined by a split gate and a driving mechanism for driving the split gate to open and close, the split gate is arranged, the deslagging efficiency of the muck box is improved, the structure is simple, the airtightness is good, and the driving process is simple.
Drawings
FIG. 1 is a block diagram of a slurry shield muck metering system according to an embodiment;
FIG. 2 is a working schematic diagram of the slurry shield muck metering system according to the embodiment.
Wherein, 1 dregs case, 2 dregs height sensor, 3 counters, 4 control system, 5 gate that open and shut.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a slurry shield muck metering system which comprises a muck box 1, a muck height sensor 2, a counter 3 and a control system 4; the residue soil box 1 is of a cover-free box structure; the bottom of the residue soil box 1 is provided with an opening and closing gate 5; the muck height sensor 2 is arranged at a preset height on the inner wall of the muck box 1, and the output end of the muck height sensor 2 is connected with the input end of the control system 4; the first output end of the control system 4 is connected with the input end of the counter 3, and the second output end of the control system 4 is connected with the control end of the opening and closing gate 5.
The residue soil box 1 is arranged at a residue discharge port of a mud-water separation system of the slurry shield and is used for containing residue soil discharged by the mud-water separation system; the muck height sensor 2 is used for acquiring the muck height in the muck collection box 1 and transmitting the acquired muck height information to the control system 4; the control system 4 is used for comparing the received slag soil height with a preset slag discharging height, generating a slag discharging instruction and sending the slag discharging instruction to the counter 3 and the opening and closing gate 5; the counter 3 is used for counting the received deslagging instruction to obtain the accumulated deslagging frequency; and the opening and closing gate 5 is used for responding to the received slag discharging instruction and executing opening or closing actions.
In the invention, the muck box 1 adopts a steel structure uncovered box structure; the residue soil height sensor 2 adopts a liquid level sensor or a distance sensor; the residue soil is stone residue or clay balls which are not dissolved in the slurry; the counter 3 adopts a standard electronic counter; after the standard electronic counter receives a slag discharge instruction every time, counting +1 operation is executed; the standard electronic counter is also provided with a zero-resetting button, and the zero-resetting button is arranged on the standard electronic counter, so that the accuracy and convenience of the counting process are realized, and the requirement of repeated metering is met; the control system 4 adopts a PLC controller; the opening and closing gate 5 comprises a split gate and a driving mechanism for driving the split gate to open and close; the split gate is rotatably arranged at the bottom of the residue soil box 1; the output end of the driving mechanism for driving the opening and closing of the split gate is connected with the split gate, and the control end of the driving mechanism for driving the opening and closing of the split gate is connected with the output end of the control system 4; preferably, the driving mechanism for driving the opening and closing of the split gate is a hydraulic driving mechanism or a motor driving mechanism; the opening and closing gate 5 is also used for executing closing action at a preset time interval after executing opening action; the opening and closing gate 5 is formed by combining a split gate and a driving mechanism for driving the split gate to open and close, the split gate is arranged, the deslagging efficiency of the muck box is improved, the structure is simple, and the driving process is simple.
The metering method and the working principle are as follows:
when the slurry shield muck metering system is used for metering muck, the concrete steps are as follows:
the muck box 1 is used for containing muck discharged by the mud-water separation system;
the method comprises the steps of utilizing a muck height sensor 2 to collect muck height information of a muck box 1 in real time; when the height of the slag in the slag box 1 reaches a preset slag discharging height, the slag height sensor 2 sends the height of the slag to the control system 4;
comparing the received slag height with preset slag discharge height information by using a control system 4 to generate a slag discharge instruction, and sending the slag discharge instruction to a counter 3 and an opening and closing gate 5;
counting the received deslagging instruction by using a counter 3 to obtain the accumulated deslagging frequency;
when the opening and closing gate 5 receives a slag discharge instruction, the opening or closing action is executed;
repeating the operation to realize the measurement of the residue soil discharged by the mud-water separation system;
after the shield tunneling progress is preset, calculating the set containing volume of the slag box 1 according to the preset slag discharging height of the slag box 1;
calculating the dry slag mass discharged by the mud-water separation system according to the set containing volume, the density of the slag soil and the accumulated slag discharge times of the slag soil box 1 to obtain the slag soil metering result of the slurry shield; the mass calculation formula of the dry slag discharged by the mud-water separation system is as follows:
m＝V×ρ×N
wherein m is the dry slag mass discharged by the mud-water separation system, V is the set containing volume of the slag soil box, rho is the density of the slag soil, and N is the accumulated slag discharge times.
The slurry shield muck metering system and method provided by the invention have the advantages that the muck box is arranged, the opening and closing gate is arranged at the bottom of the muck box, and the muck height sensor is arranged at the preset height inside the muck box; the control system outputs a slag discharging instruction according to comparison between the slag height information transmitted by the slag height sensor and a preset slag discharging height; utilize the counter to count row's sediment instruction, the gate that opens and shuts responds row's sediment instruction, realizes discharging the dregs of the interior volume of presetting of dregs case, according to the count result of row's sediment instruction and the sediment volume of presetting row of dregs, realizes the accurate measurement to mud-water separation system discharge dregs, need not to consider row's thick liquid proportion, has ensured the accuracy nature of measuring result, simple structure, convenient operation.
Examples
As shown in fig. 1, the present embodiment provides a slurry shield muck metering system, which includes a muck tank 1, a muck height sensor 2, a counter 3 and a control system 4; the bottom of the residue soil box 1 is provided with an opening and closing gate 5; the muck height sensor 2 is arranged at a preset height on the inner wall of the muck box 1, and the output end of the muck height sensor 2 is connected with the input end of the control system 4; the first output end of the control system 4 is connected with the input end of the counter 3, and the second output end of the control system 4 is connected with the control end of the opening and closing gate 5.
The residue soil box 1 is of a steel structure cover-free box body structure, and the residue soil box 1 is arranged at a residue discharge opening of a slurry-water separation system of the slurry-water shield and used for containing residue soil discharged by the slurry-water separation system.
The muck height sensor 2 is used for acquiring the muck height in the muck collection box 1 and transmitting the acquired muck height information to the control system 4; wherein, the residue soil height sensor 2 adopts a liquid level sensor or a distance sensor.
The counter 3 is used for counting the received deslagging instruction to obtain the accumulated deslagging frequency; the counter 3 adopts a standard electronic counter; after the standard electronic counter receives a slag discharge instruction every time, counting +1 operation is executed; the standard electronic counter is also provided with a zero button.
The control system 4 is used for comparing the received slag soil height with a preset slag discharging height, generating a slag discharging instruction and sending the slag discharging instruction to the counter 3 and the opening and closing gate 5; wherein, the control system 4 adopts a PLC controller.
The opening and closing gate 5 is used for responding to the received slag discharging instruction and executing opening or closing action; wherein, the opening and closing gate 5 executes the closing action at the preset time interval after executing the opening action.
In this embodiment, the opening and closing gate 5 includes a split gate and a driving mechanism for driving the split gate to open and close; the split gate is rotatably arranged at the bottom of the residue soil box 1; the output end of the driving mechanism for driving the opening and closing of the split gate is connected with the split gate, and the control end of the driving mechanism for driving the opening and closing of the split gate is connected with the output end of the control system 4; the driving mechanism for driving the split gate to open and close is a hydraulic driving mechanism or a motor driving mechanism.
In the embodiment, the residue soil box 1 is a steel structure uncovered box body, and the bottom of the residue soil box 1 is provided with an opening and closing gate 5; the opening and closing gate 5 is an automatic opening and closing gate; the muck box 1 is arranged at a slag discharge port of a mud-water separation system of the mud-water shield, and muck discharged by the mud-water separation system falls into the muck box 1 after treatment.
The residue soil height sensor 2 adopts a liquid level sensor or a distance sensor; when in use, the muck height sensor 2 is arranged at a preset height position on the inner wall of the muck box, and the muck height sensor 2 is connected with the control system 4; the residue soil height sensor 2 collects the residue soil height in the residue soil box 1 in real time and transmits the collected residue soil height information to the control system 4.
The counter 3 adopts a standard electronic counter, manual zero operation can be carried out by setting a zero button, when in use, the counter 3 is connected with the control system 4, and the counter 3 is used for counting the received slag discharge instruction to obtain the accumulated slag discharge times; the control system 4 adopts a PLC control system, and can realize recoding; when in use, the control system 4 is connected with the muck height sensor 2, the counter 3 and the opening and closing gate 5; the control system 4 compares the received slag height with a preset slag discharge height, and when the received slag height reaches the preset slag discharge height, the control system 4 generates a slag discharge instruction and transmits the slag discharge instruction to the counter 3 and the opening and closing gate 5.
The opening and closing gate 5 is driven in a hydraulic or electric mode, the control end of the opening and closing gate 5 is connected with the control system 4, the opening and closing gate 5 is automatically opened when a slag discharging instruction of the control system 4 is received, so that the slag in the slag box 1 is emptied, and the control system 4 gives an instruction again after 4 seconds to close the opening and closing gate 5.
In this embodiment, the opening and closing time of the opening and closing gate 5 can be adjusted according to the slag discharge speed of the slurry treatment equipment and the slag leakage speed in the slag box 1.
The metering method and the working principle are as follows:
before the slurry shield muck metering system is used, a muck tank 1 is arranged at a slag discharge port of a slurry-water separation system of a slurry shield, a muck height sensor 2 is arranged at a preset position of the muck tank 1, and an opening-closing gate 5 is arranged at the bottom of the muck tank 1; and then, the control system 4 is respectively connected with the muck height sensor 2, the counter 3 and the control end of the opening and closing gate.
As shown in the attached figure 2, when the slurry shield is used, the opening and closing gate 5 is closed, the muck treated by the mud-water separation equipment of the slurry shield falls into the muck box 1, and the muck height sensor 2 detects a muck height signal and transmits the muck height signal to the control system 4; the control system 4 respectively sends slag discharge instructions to the counter 3 and the opening and closing gate 5 according to the slag soil height judgment result; after receiving the slag discharge instruction, the counter 3 executes counting operation; after receiving a slag discharge instruction, the opening and closing gate 5 is opened for 4 seconds, so that the slag in the slag box 1 is leaked out; the opening and closing gate 5 is automatically closed after 4 seconds; repeating the above metering process; and after one-ring tunneling of the slurry shield is completed, calculating the set slag discharging volume and the accumulated slag discharging times of the slag-soil box 1 to obtain the accurate quality of the dry slag in the slurry.
In the embodiment, the device is used for metering sludge insoluble in mud; meanwhile, the residue soil partially dissolved in the slurry is calculated by installing a densimeter on a slurry discharge pipe or manually measuring the density of the slurry discharged, and multiplying the difference of the densities by the total amount of the slurry.
According to the metering system and method, the counter is used for counting the slag discharging instructions, the open-close gate responds to the slag discharging instructions to discharge the slag with the preset volume in the slag box, and the accurate metering of the slag discharged by the mud-water separation system is realized according to the counting result of the slag discharging instructions and the preset slag discharging volume of the slag without considering the specific gravity of the discharged slurry; the device has the characteristics of repeated use, simple installation and accurate measurement.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, but includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (10)
1. A slurry shield muck metering system is characterized by comprising a muck box (1), a muck height sensor (2), a counter (3) and a control system (4); the residue soil box (1) is of a cover-free box body structure and is used for containing residue soil discharged by the mud-water separation system; the bottom of the residue soil box (1) is provided with an opening and closing gate (5); the muck height sensor (2) is arranged at a preset height on the inner wall of the muck box (1), and the output end of the muck height sensor (2) is connected with the input end of the control system (4); the input end of the counter (3) is connected with the first output end of the control system (4), and the second output end of the control system (4) is connected with the control end of the opening and closing gate (5);
the muck height sensor (2) is used for acquiring the muck height in the muck collection box (1) and transmitting the acquired muck height information to the control system (4);
the control system (4) is used for comparing the received slag soil height with a preset slag discharging height, generating a slag discharging instruction and sending the slag discharging instruction to the counter (3) and the opening and closing gate (5);
the counter (3) is used for counting the received deslagging instruction to obtain the accumulated deslagging frequency;
and the opening and closing gate (5) is used for responding to the received slag discharging instruction and executing opening or closing action.
2. The slurry shield muck metering system according to claim 1, wherein the muck height sensor (2) adopts a liquid level sensor or a distance sensor; the residue soil is stone residue or clay balls which are not dissolved in the slurry.
3. The slurry shield muck metering system according to claim 1, wherein the counter (3) is a standard electronic counter; after the standard electronic counter receives a slag discharge instruction every time, counting +1 operation is executed; the standard electronic counter is also provided with a zero button.
4. The slurry shield muck metering system according to claim 1, wherein the control system (4) is a PLC controller.
5. The slurry shield muck metering system of claim 1, wherein the split gate (5) comprises a split gate and a driving mechanism for driving the split gate to open and close; the split gate is rotatably arranged at the bottom of the residue soil box (1); the output end of the driving mechanism for driving the split gate to open and close is connected with the split gate, and the control end of the driving mechanism for driving the split gate to open and close is connected with the output end of the control system (4).
6. The slurry shield muck metering system of claim 1, wherein the driving mechanism for driving the opening and closing of the split gate is a hydraulic driving mechanism or a motor driving mechanism.
7. The slurry shield muck metering system according to claim 1, wherein the shutter (5) is further configured to perform a closing action at a predetermined time interval after performing the opening action.
8. The slurry shield muck metering system according to claim 1, wherein the muck tank (1) is arranged at a slag discharge port of a slurry-water separation system of the slurry shield.
9. A slurry shield muck metering method is characterized in that the slurry shield muck metering system of any one of claims 1 to 8 is utilized, and the method specifically comprises the following steps:
the muck box (1) is used for containing muck discharged by the mud-water separation system;
the method comprises the steps of utilizing a muck height sensor (2) to collect muck height information of a muck box (1) in real time; when the height of the slag in the slag box (1) reaches a preset slag discharging height, the slag height sensor (2) sends the height of the slag to the control system (4);
comparing the received slag height with preset slag discharge height information by using a control system (4), generating a slag discharge instruction, and sending the slag discharge instruction to a counter (3) and an opening and closing gate (5);
counting the received deslagging instruction by using a counter (3) to obtain the accumulated deslagging frequency;
when the opening and closing gate (5) receives a slag discharge instruction, the opening or closing action is executed;
repeating the operation to realize the measurement of the residue soil discharged by the mud-water separation system;
after the shield tunneling progress is preset, calculating the set containing volume of the slag box (1) according to the preset slag discharging height of the slag box (1);
and calculating the dry slag mass discharged by the mud-water separation system according to the set containing volume, the density and the accumulated slag discharge frequency of the slag-soil box (1), so as to obtain the mud-water shield slag-soil metering result.
10. The slurry shield muck metering method according to claim 9, wherein a formula for calculating the mass of dry slag discharged by the slurry-water separation system is as follows:
m＝V×ρ×N
wherein m is the dry slag mass discharged by the mud-water separation system, V is the set containing volume of the slag soil box, rho is the density of the slag soil, and N is the accumulated slag discharge times.
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