CN1203294C - Cement mortar flow metering method for dam foundation rock grouting - Google Patents
Cement mortar flow metering method for dam foundation rock grouting Download PDFInfo
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- CN1203294C CN1203294C CN 02138897 CN02138897A CN1203294C CN 1203294 C CN1203294 C CN 1203294C CN 02138897 CN02138897 CN 02138897 CN 02138897 A CN02138897 A CN 02138897A CN 1203294 C CN1203294 C CN 1203294C
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Abstract
The present invention provides a method for metering the flow of cement paste grouted to rock of a dam base, namely that a flow sensor forms a small loop pipeline for metering the flow of the cement paste, particularly a method for metering the flow quantity of the cement paste when the grouting is finished. The system of the present invention mainly comprises a stirring barrel, a paste entering flow sensor, a three-way valve, a pressurizing pump, a pressure meter, a control valve, etc. The small loop pipeline is formed by orderly passing through the three-way valve, the pressurizing pump, a grouting hole (return paste), the pressure meter, the control valve and the three-way valve at last. The return paste recurrently flows in the small loop pipeline by a constant value, and thus, the injection rate of the cement paste is metered by one flow sensor according to the requirements of a relative standard at specified pressure, and the specified time is sustained in order to finish grouting construction. The method has the advantages of construction quality guarantee and high metering accuracy, and the system has the advantages of low cost, convenient installation and simple operation.
Description
Technical field
The invention provides a kind of dam foundation rock Grouting Cement slurry flow metering method, exactly, it is a kind ofly to constitute the partial circulating pipeline with flow sensor connect in dam foundation rock grouting construction process, the cement grout flow is measured, when particularly grouting finishes, the method that the cement grout flow is measured.
Background technology
For guaranteeing dam foundation rock grouting construction quality, the size of cement grout flow had been made clear and definite regulation when " hydraulic structure cementation process construction technique normalizing " SL62-94 industry standard that China issues finished grouting: wherein, the 3.6.1 money is that grout curtain is when adopting packer grouting method from top to bottom, under the pressure of regulation, when input rate is not more than 0.4L/min, continue perfusion 60min, or when being not more than 1.0L/min, continue perfusion 90min, grouting can finish.The 3.6.2 money is a consolidation grouting, under the pressure of regulation, when input rate is not more than 0.4L/min, continues perfusion 30min, and grouting can finish.Traditional metering method is to be connected with the systemic circulation pipeline that two flow sensors (promptly is advanced to starch a flow sensor A and an overfall flow sensor B) constitute to carry out.The characteristics of this method are easy for installation, and are simple to operate, and slurries heat up less.But owing to adopt two flow sensors of A, B to measure slurries grout absorption and overfall amount respectively, the size of actual measurement dam foundation Grouting Cement slurry flow is cumulative amount poor of A, two flow sensors of B.Because two flow sensors of A, B certainly exist trueness error, then measuring error equals A, two flow sensor errors of B sum, even the negative value phenomenon can occur.Therefore, judge with this metering method whether cycle grouting should finish to be difficult to guarantee construction quality.
Summary of the invention
The objective of the invention is in the dam foundation rock filling process, remove the overfall flow sensor B in traditional systemic circulation pipeline connecting method, increase a three-way valve, realize that advancing to starch flow sensor with one constitutes the connection of partial circulating pipeline, cement grout is measured, when particularly grouting finishes, the method that the cement grout flow is measured.
Mechanism of the present invention can obtain by the error in dipping analysis to A, two flow sensors of B in the conventional metered dose method.
Suppose: the error of advancing to starch flow sensor A is ± Δ 1 that the error of overfall flow sensor B is ± Δ 2.
First kind of situation established A and is+Δ 1, and B is-Δ 2,
And |+Δ 1|=|-Δ 2|=Δ,
So: (A)-(B)=+ Δ 1-(Δ 2)=Δ 1+ Δ 2=2 Δ
Conclusion: error in dipping equals the twice of a flow sensor error.
Second kind of situation established A and is+Δ 1, and B is-Δ 2,
And |+Δ 1|＜|-Δ 2|,
So: (A)-(B)=+ Δ 1-(Δ 2)=Δ 1+ Δ 2
Conclusion: error in dipping equals A, two flow sensor errors of B sum.
The third situation is established A and is+Δ 1, and B is+Δ 2,
And+Δ 1＜+Δ 2,
So: (A)-(B)=Δ 1-Δ 2＜0
Conclusion: error in dipping is a negative.
Situation in the 4th is established A and is-Δ 1, and B is-Δ 2,
And |-Δ 1|＞|-Δ 2|,
So: (A)-(B)=-Δ 1-(Δ 2)＜0
Conclusion: error in dipping is a negative.
Can see from top analysis: the dam foundation rock filling process, the size of cement grout flow when being in the milk end with the systemic circulation pipeline connection metering of two flow sensors formations, because trueness error and the overfall influence of directly returning factors such as agitator separately of two flow sensors, its metering is the result can not reach grouting ending standard requirement and guarantee construction quality.On the contrary, with the partial circulating pipeline connection that a flow sensor constitutes the cement grout flow is measured, the size of cement grout flow when particularly metering grouting finishes, owing to only advance to starch flow sensor with one, it is mobile to add that overfall only is limited in the partial circulating pipeline, so its metering result can guarantee be in the milk ending standard requirement and construction quality.
Formation of the present invention comprises agitator, advances to starch flow sensor, three-way valve, force (forcing) pump, pressure gauge and by-pass valve control etc.The present invention advances to starch flow sensor with one and constitutes the partial circulating pipeline, cement flow is measured, when particularly grouting finishes, the method that the cement grout flow is measured, the output terminal that pipeline connecting mode is followed successively by agitator is connected with the input end that advances to starch flow sensor, an input end that advances to starch the output terminal three-way valve of flow sensor is connected, the output terminal of three-way valve is connected with the input end of force (forcing) pump, the pressurization delivery side of pump is connected mutually with grout hole, return pipe in the grout hole is connected with manometric input end, manometric output terminal is connected with the input end of by-pass valve control, and the output terminal of by-pass valve control is connected with another input end of three-way valve.Thus, from the three-way valve output terminal, through force (forcing) pump, logical overfall grout hole, to pressure gauge, cross by-pass valve control, be back to another input end of three-way valve at last, constitute the partial circulating pipeline connecting mode, overfall goes round and begins again, and flows in the partial circulating pipeline with a constant value.Like this, no matter be grout curtain, or consolidation grouting, under authorised pressure, advance to starch flow sensor by the relevant criterion requirement with one, measure the input rate of cement, and lasting official hour, just can finish grouting construction, guarantee construction quality.
The present invention is on the basis of partial circulating pipeline connecting mode, increase an overfall bucket, also available one is advanced to starch second kind of connected mode of flow sensor formation partial circulating pipeline, the grout flow is measured, when particularly grouting finishes, the cement grout flow is carried out metering method.This overfall bucket is connected between by-pass valve control and the three-way valve, and promptly the output terminal of by-pass valve control is connected with the input end of overfall bucket, and the output terminal of overfall bucket is connected with another input end of three-way valve.Thus, from the three-way valve output terminal, through force (forcing) pump, logical overfall grout hole is crossed by-pass valve control, again through the overfall bucket to pressure gauge, be back to another input end of three-way valve at last, constitute second kind of connected mode of partial circulating pipeline, overfall goes round and begins again, and flows in the partial circulating pipeline with a constant value.The overfall bucket is back to the flow velocity of three-way valve in order to buffering overfall slurries.
The present invention is on the basis of partial circulating pipeline connecting mode, increase a three-way valve A and two by-pass valve control A (B), can advance to starch flow sensor with one equally and constitute second kind of connected mode of partial circulating pipeline, the cement grout flow is measured, when particularly grouting finishes, the method that the cement grout flow is measured.Concrete annexation in basic pipeline is three-way valve A with by-pass valve control A and by-pass valve control B: the output terminal of by-pass valve control is connected with the input end of three-way valve A, the output terminal of three-way valve A is connected with the input end of by-pass valve control A, the output terminal of by-pass valve control A and three-way valve A and by-pass valve control A, be back to another input end of three-way valve at last, constitute the third connected mode of partial circulating pipeline, under the situation that by-pass valve control B closes, overfall goes round and begins again, and flows in the partial circulating pipeline with a constant value.In addition, another output terminal of three-way valve A is connected with the input end of by-pass valve control B, and the output terminal of by-pass valve control B turns back to agitator again.Thus, under the situation that by-pass valve control A closes, from agitator, successively through advancing to starch flow sensor, three-way valve, force (forcing) pump, overfall grout hole, pressure gauge, by-pass valve control, three-way valve A, by-pass valve control B, turn back to agitator at last, constitute the systemic circulation pipeline, for the usefulness of detergent line.
In sum, the present invention is owing to only adopt one to advance to starch flow sensor, no matter constitute the partial circulating pipeline, be basic connected mode, still second kind of connected mode, or the third connected mode, the overfall slurries all flow in the partial circulating pipeline with a constant value, so the measuring accuracy height, when particularly grouting finishes, can accomplish the mud flow quantity to be measured, guarantee work quality by the relevant criterion requirement.Owing to an overfall flow sensor B who has removed in the conventional metered dose mode, therefore, reduce system cost again, improved cost performance.Simultaneously, also have characteristics such as easy for installation, simple to operate.
Description of drawings
Fig. 1 is the systemic circulation pipeline connection diagram of conventional metered dose method with two flow sensor sensors.
Fig. 2 constitutes the basic connected mode synoptic diagram of partial circulating pipeline for the present invention advances to starch flow sensor with one.Wherein, the 1st, advance to starch flow sensor, the 2nd, three-way valve, the 3rd, force (forcing) pump, the 4th, pressure gauge, the 5th, by-pass valve control, the 6th, agitator.The partial circulating pipeline is T-valve → force (forcing) pump → overfall grout hole → pressure gauge → by-pass valve control → T-valve.
Fig. 3 for the present invention on the basis of partial circulating pipeline connecting mode, increase a three-way valve A and two by-pass valve control A, advance to starch the third connected mode synoptic diagram of flow sensor formation partial circulating pipeline with one.Wherein, 8 is by-pass valve control B, the 9th, and three-way valve A, the 10th, by-pass valve control A, all the other same Fig. 2.The 10th, the partial circulating pipeline is: T-valve → force (forcing) pump → overfall grout hole → pressure gauge → by-pass valve control → T-valve A → operation valve A → T-valve.
Embodiment
Fig. 2 has provided the basic connected mode metering method of partial circulating pipeline of the present invention embodiment.Fig. 3 has provided second kind of connected mode metering method of the present invention embodiment.Fig. 4 has provided the third connected mode metering method of the present invention embodiment.The common feature of three kinds of methods is only to constitute a partial circulating pipeline with a flow sensor.Difference is that second kind and the third mode have been set up an overfall bucket or three-way valve A and two by-pass valve control A, B respectively.Three kinds of connected modes can be applied to different dam foundation rock grouting constructions scene as required, and the cement grout flow is carried out real time measure, all can meet the requirement of SL62-94 industry standard, guarantee construction quality.
Claims (3)
1, a kind of dam foundation rock Grouting Cement slurry flow metering method, by agitator (6), advance to starch flow sensor (1), three-way valve (2), force (forcing) pump (3), pressure gauge (4) and by-pass valve control (5) constitute the method that pipeline connecting mode measures the grout flow, the end that it is characterized in that the output of agitator (6) is connected with the input end that advances to starch flow sensor (1), the output terminal that advances to starch flow sensor (1) is connected with an input end of three-way valve (2), the output terminal of three-way valve (2) is connected with the input end of force (forcing) pump (3), the output terminal of force (forcing) pump (3) is connected mutually with grout hole, overfall groove in the grout hole is connected mutually with the input end of pressure gauge (4), the output terminal of pressure gauge (4) is connected with the input end of by-pass valve control (5), the output terminal of by-pass valve control (5) is connected with another input end of three-way valve (2), thus, the partial circulating pipeline is T-valve (2) → force (forcing) pump (3) → overfall grout hole → pressure gauge (4) → by-pass valve control (5) → T-valve (2).
2, according to the described metering method of claim 1, on the basis of partial circulating pipeline connecting mode, increase an overfall bucket (7), advance to starch flow sensor (1) with one and constitute second kind of connected mode of partial circulating pipeline, the method that the cement grout flow is measured, the output terminal that it is characterized in that by-pass valve control (5) is connected with the input end of overfall bucket (7), the output terminal of overfall bucket (7) is connected with another input end of three-way valve (2), thus, the partial circulating pipeline is T-valve (2) → force (forcing) pump (3) → time grout hole → pressure gauge (4) → by-pass valve control (5) → overfall bucket (7) → three-way valve (2).
3, by the described metering method of claim 1, on the basis of partial circulating pipeline connecting mode, increase a by-pass valve control B (8), a three-way valve (A) and a by-pass valve control A (10), advance to starch flow sensor (1) with one and constitute the third connected mode of partial circulating pipeline, the method that the cement grout flow is measured, the output terminal that it is characterized in that by-pass valve control (5) is connected with the input end of three-way valve A (9), the output terminal of three-way valve A (9) is connected with the input end of by-pass valve control A (10), the output terminal of by-pass valve control A (10) is connected with another input end of three-way valve (2), thus, the partial circulating pipeline is T-valve (2) → force (forcing) pump (3) → overfall grout hole → pressure gauge (4) → by-pass valve control (5) → T-valve A (9) → operation valve A (10) → T-valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138897 CN1203294C (en) | 2002-08-08 | 2002-08-08 | Cement mortar flow metering method for dam foundation rock grouting |
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|---|---|---|---|
| CN 02138897 CN1203294C (en) | 2002-08-08 | 2002-08-08 | Cement mortar flow metering method for dam foundation rock grouting |
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| CN1474166A CN1474166A (en) | 2004-02-11 |
| CN1203294C true CN1203294C (en) | 2005-05-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1970990B (en) * | 2006-11-29 | 2011-06-08 | 中国石油大学(北京) | Method for measuring return flow in petroleum drilling and device therefor |
| TWI555966B (en) * | 2006-09-12 | 2016-11-01 | 伯西華公司 | Flow meter |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104797909B (en) * | 2012-11-21 | 2018-03-13 | 贝卡尔特公司 | For determining or monitoring the amount of additional materials present in flowable mass stream or the method for distribution |
| CN103527179B (en) * | 2013-10-28 | 2016-07-06 | 中国电建集团中南勘测设计研究院有限公司 | A kind of HIGH-PRESSURE INJECTION EXPERIMENT loading system |
| CN104729786B (en) * | 2015-03-24 | 2017-03-01 | 长沙理工大学 | A kind of dynamic measurement method of in the hole grouting pressure |
| CN107023284A (en) * | 2017-06-05 | 2017-08-08 | 贵州大学 | A kind of static expanding agent injected system and method for implanting |
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2002
- 2002-08-08 CN CN 02138897 patent/CN1203294C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI555966B (en) * | 2006-09-12 | 2016-11-01 | 伯西華公司 | Flow meter |
| CN1970990B (en) * | 2006-11-29 | 2011-06-08 | 中国石油大学(北京) | Method for measuring return flow in petroleum drilling and device therefor |
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| CN1474166A (en) | 2004-02-11 |
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