WO2016122381A1 - Préparation et administration de coulis - Google Patents

Préparation et administration de coulis Download PDF

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Publication number
WO2016122381A1
WO2016122381A1 PCT/SE2016/050048 SE2016050048W WO2016122381A1 WO 2016122381 A1 WO2016122381 A1 WO 2016122381A1 SE 2016050048 W SE2016050048 W SE 2016050048W WO 2016122381 A1 WO2016122381 A1 WO 2016122381A1
Authority
WO
WIPO (PCT)
Prior art keywords
grout
agitator
mixer
weighing
mixers
Prior art date
Application number
PCT/SE2016/050048
Other languages
English (en)
Inventor
Stefan SANDMAN
Original Assignee
Sandman Stefan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sandman Stefan filed Critical Sandman Stefan
Priority to EP16743791.2A priority Critical patent/EP3250353A4/fr
Publication of WO2016122381A1 publication Critical patent/WO2016122381A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0481—Plant for proportioning, supplying or batching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
    • B01F33/813—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles mixing simultaneously in two or more mixing receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/82—Combinations of dissimilar mixers
    • B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2117—Weight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
    • B01F35/832—Flow control by weighing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/02—Controlling the operation of the mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0404—Proportioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0422—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery
    • B28C7/044—Weighing mechanisms specially adapted therefor; Weighing containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant
    • B28C9/002—Mixing systems, i.e. flow charts or diagrams; Making slurries; Involving methodical aspects; Involving pretreatment of ingredients; Involving packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant
    • B28C9/002—Mixing systems, i.e. flow charts or diagrams; Making slurries; Involving methodical aspects; Involving pretreatment of ingredients; Involving packaging
    • B28C9/004—Making slurries, e.g. with discharging means for injecting in a well or projecting against a wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients

Definitions

  • the present technology generally concerns the reduction of water flows in cracks and dis- continuities in rock and/or soil by grouting, namely by injecting cementitious and/or non- cementitious grouts into an open end of injection and sealing pipes introduced into pre-drilled boreholes formed in the rock/soil.
  • the technology has its primary field of application in association with drilling for tunnelling etc.
  • the technology concerns a method and equipment for preparing and administering grout for such rock/soil grouting.
  • Grouting is commonly performed for the general purpose of sealing soil and rock formations. Common applications for such grouting is found within normal civil engineering, such as in projects for reducing permeability of and prevent settlement in granular soils, generally known as permeation grouting, or for reducing water flow in fissured rock, generally known as rock grouting. Grouting is frequently performed in association with work such as by tunnelling projects or for stabilizing soil formations below basements and other foundations.
  • grout is injected into soil or rock formations by pumping prepared grout into steel pipes or casings that have been introduced into boreholes that are pre-formed in the soil/rock formations.
  • grout is prepared in batches of a predetermined composition or formulation that for cementitious grouts consists of ingredients such as water, cement and additives, although other non- cementitious grouts are used for certain applications.
  • the ingredients are added to a mixer in predetermined quantities, fed from a respective supply and mixed therein. After a set mixing time prepared grout is fed to an agitator from which it is then pumped on demand to injection equipment for injection into the boreholes.
  • the grout batches are basically prepared in a separate mixer that supplies the prepared grout to one or two agitators from which grout is alternatingly withdrawn to be injected into boreholes in the soil/rock formation.
  • the size of the mixer must be increased dramatically to meet increased grout demands.
  • Such increased mixer size has several drawbacks among which may be specifically mentioned the additional preparation time for each batch and also the problem of large amounts of unused grout mix in the event that the grouting operation is finished prematurely or is changed.
  • several smaller mixers may be used that all supply their prepared grout mix to one or more associated agitators and all mixers and agitators must be equipped with their own semi-automatic control system controlling preparation of grout mix of a specific batch.
  • the technology generally relates to grouting, namely the injection of cementitious and/or non- cementitious grouts into an open end of injection and sealing pipes introduced into pre-drilled boreholes formed in rock/soil.
  • Grout is prepared at site and is prepared and administered into the boreholes in a quantity required by the circumstances.
  • an improved method of preparing and administering grout for injection into multiple or large diameter boreholes formed in rock/soil whereby a batch of grout having a predetermined composition is prepared by controlled addition of predetermined quantities of ingredients from a respective supply to several mixers for mixing therein.
  • a prepared grout quantity is detected by positive weighing of the grout prepared in a mixer and prepared grout is fed to an agitator from which grout is pumped on demand to injection equipment for injection into boreholes.
  • the output of grout from the agitator and thereby of grout supplied to the injection equipment is continuously detected by negative weighing, i.e. weighing of remaining grout in the agitator. This enables calculation of a mass flow rate, e.g.
  • An agitator is also provided to which the prepared grout is fed and from which grout is then pumped on demand to injection equipment for injection into the boreholes.
  • load cells for negative weighing are associated with the agitator.
  • a control system is also provided for individually controlling and logging the grout preparation in each of the mixers and for administration of the prepared grout to the agitator in amounts based on a withdrawal of grout from the agitator, as calculated from the negative weighing of the amount of grout withdrawn from the agitator.
  • Fig. 1 is an illustration of a prior art apparatus for grout preparation and administration and a variation thereof
  • Fig. 2 is a schematic illustration of a an apparatus for grout preparation and administration in accordance with the present technology
  • Fig. 3 is a schematical diagram of a grout preparation and administration control unit of the present technology.
  • Fig. 4 is a schematic flow diagram of a grout preparation and administration control method according to the present technology.
  • the present technology will be explained below with reference to exemplifying embodiments of a method of preparing and administering grout for injection into boreholes in rock/soil and an apparatus for preparing and administering such grout.
  • the discussed and shown embodi- ments relate to an application of the technology in particular to the injection of cementitious grout into multiple injection pipes, such as by tunnelling work.
  • the present teclinology may be applied generally in the field of grouting and it is emphasized that all employed equipment and components that are well known within this field are therefore not illustrated in detail in the attached drawing figures.
  • the described technology is equally well suited for application to other types of environments and for other specific types of grouting work.
  • Fig. 1 is depicted an example of a partially and schematically outlined conventional grout preparation and administration system/apparatus 100 with the above mentioned, presently used type of mixer 106 A and agitator 107 combination.
  • Fig. 1 shows in full lines a basic prior art apparatus 100 that is controlled (control units 120A, 120B) in a semi-automatic manner and that has one mixer 106 A supplying grout to two agitators 107. Of these agitators 107 one serves as a buffer for prepared grout and does therefore in continuous operation not add to the capacity of the system.
  • ingredients such as water, additives and cement are sequentially fed from respective supplies 104, 102, 103 and 105 to the mixer 106A in quantities prescribed by the composition of the prepared batch and controlled by appropriate valves 113, 114, 115 and 117.
  • the conformance of the prepared grout to the composition is controlled by positive weighing (load cells 1 12) of the additive supply/supplies in combination with positive weighing (load cells 1 10) of the mixer during and after supply and preparation.
  • the known systems use positive weighing (load cells 1 1 1) of the/each agitator 107, but the only purpose of this weighing is to determine how much prepared grout is available to the systems.
  • the systems further employ magnetic inductive flow meters 118 to determine flow of prepared grout from the agitators, and thereby to determine the continuous grout consumption.
  • a detection provides insufficient accuracy for the operation control since the valves will inevitably become fouled after some time in operation. Such fouling will have the effect that the detected delivered grout quantity is higher than the actual amount.
  • the described system relies to a significant part on manual input, such as a manual start of each batch or series of batches, a manual choice of which agitator 107 to supply with prepared grout and a manual input of the ingredients having been added to detemiine the sum of the pumped grout.
  • the conventional system is therefore very exposed to malfunctions due to human errors.
  • the suggested grout preparation and administration approach briefly involves providing a secure control of the grout preparation and mixing by combining positive and negative weighing performed in series for one and the same grout composition and by using several mixers controlled interactively and feeding one agitator. This will enable the efficient, practical use of the system and thereby the preparation and supply of a significantly increased quantity of grout, all with the use of only one operator.
  • the proposed improvement will provide very accurate and tamper-free logging and control of the quantities of the used additive ingredients. By allowing thorough control of the number of grout batches that the system requires per minute and thereby minimization of waste, the environmental effect will further be very advantageous.
  • the versatility of the system as regards the change of grout composition will also be greatly improved compared to existing solutions.
  • the apparatus 1 is intended for the preparation and administration of grout G and includes respective level-controlled supplies 2-5 of grout ingredients that for a cementitious grout may comprise water, cement and additives.
  • Reference numbers 2 and 3 represent supplies, normally tanks, for additives, 4 represents a water supply and 5 represents a cement supply that is normally named a bin.
  • Separate flow control valves, 15, 17 and 13, 14 are associated with each water, cement and additive supply, and through said valves water, cement and additives are separately supplied to each mixer from the respective supplies 2-5.
  • a hydraulic valve and motor (not shown) are activated to convey cement from the cement bin 5 via an ordinary screw feeder (not specifically denoted) and to a manifold 16 distributing the cement to the valve 17 associated with the respective mixer 6A-6N.
  • the flow control valves 15, 17, 13, 14 for the water, cement and additive supplies are preferably pneumatically or electrically (magnetic spool) controlled.
  • Two or more mixers 6A-6N are provided for mixing the grout G ingredients therein and the number of mixers may in this case be varied freely within reasonable numbers, such as based on required capacity and/or available space.
  • each mixer 6A-6N may have a considerably reduced size, enabling a great amount of versatility as regards the ability to shorten the lead time for each batch and the possibility to quickly change grout composition/formulation.
  • the mixers may be provided in a cluster configured in pairs or in sets of four or even six mixers each having a size of approximately 100 liters.
  • the system further includes a single agitator 7 to which prepared grout G is fed through valves (not specifically denoted) from selected mixers 6A-6N and from which grout is then pumped on demand to injection equipment 8 for injection into the boreholes (not specifically shown).
  • a grout pump of any appropriate, not specifically named type that is able to provide an even flow of grout to the injection equipment 8.
  • Conventional load cells 10 for positive weighing are associated with each mixer 6 A-6N and serve to provide control of the supplied water and cement quantities and a value of the total weight of the prepared grout mix supplied to the agitator 7.
  • a load cell 12 for negative weighing is associated with each additive supply 2, 3 in order to enable accurate control of the additive supply to the mixers 6A-6N. The quantities of additives for each batch are very small and the negative weighing of withdrawn quantities will provide a very accurate result.
  • Further load cells 1 1 for negative weighing are associated with the agitator 7.
  • a control unit 20 is provided for individually but interactively controlling and logging the grout preparation in each of the mixers 6A, 6N and for administration of the prepared grout G to the agitator 7 in amounts based on a withdrawal of grout G from the agitator 7.
  • a mass flow of grout from the agitator 7 per unit of time is calculated from the continuous negative weighing of the amount of grout withdrawn from the agitator.
  • Fig. 3 illustrates very schematically the basic components and functions of an exemplary control unit 20 being common to all mixers 6A-6N and serving to control the grout preparation apparatus 1.
  • the common control unit 20 separately controls the supply of ingredients of a selected grout composition to one or several mixers 6A-6N, as required. It further controls the mixing operation for and withdrawal of grout G from all active mixers 6A-6N in accordance with the selected compositions and based on input values from load sensors 10, 1 1, 12, supply valves 13, 14, 15, 17 and the below described, calculated grout consumption based on withdrawal of grout G from the agitator 7.
  • This control unit 20 provides an automatic process function by enabling control of all mixers of the apparatus 1, which means that as soon as the flow of grout G from the agitator is greater than that supplied by one mixer 6A alone, further mixers 6B-6N are activated as required.
  • a number of individually but interactively controlled mixers 6A-6N are provided and the number of activated mixers depends upon the grout quantity required by the injection equipment 8. This quantity is represented by the mass flow rate of grout G as calculated from the result of the continuous negative weighing of the agitator 7.
  • the common control unit 20 may basically include a sensor input evaluation means 21 receiving the detected values from all load cells 10, 11 , and 12. Load cell input values are then entered into a sensor input computing means 22 by which is also made a manual input 19 of a selection of grout composition or formulation.
  • a process timer 24 is also connected to the sensor input computing means 22 to provide the time data for calculating the mass flow rate of grout from the agitator 7 based on the negative weighing.
  • the computing means 22 is further connected to means 23 for controlling the activation of the supply of ingredients to the mixers 6A-6N as well as the activation of impellers (not specifically shown) of the mixers.
  • An override function may also be provided at the control unit 20 for allowing the operator to make a manual mixer selection input 18.
  • the technology also concerns a method of preparing and ad- ministering grout for injection into multiple or large diameter boreholes preformed in rock or soil.
  • a batch of grout G having a predetermined composition is prepared in a conventional manner by controlled addition of predetermined quantities of ingredients, such as water, cement and additives, from a respective supply 2-5 to two or more mixers 6A-6N for mixing therein.
  • a grout quantity prepared in the mixer/-s is basically detected by positive weighing of the grout G prepared.
  • Prepared grout G is then fed to an agitator 7 from which grout is pumped on demand to the injection equipment 8 for injection into boreholes.
  • the method includes the below described steps.
  • a first step SI the grout preparation is started by supplying water pumped from the water supply 4 to one of the mixers 6A-6N and in a quantity as prescribed in the selected composition.
  • This supply of water is controlled by positive weighing of the mixer in step S2, so that the water valve 13 closes when the mixer load cells 10 detect a preset weight for the specific grout composition being prepared.
  • step S3 additives in quantities as prescribed in the composition are supplied from the respective additive supply 2, 3, through the designated valves 14, 15 and to the mixer.
  • the output quantity of one or more additives from associated additive supplies 2, 3 and thereby of the additive supplied to each mixer 6A-6N is continuously detected by negative weighing of remaining additive in the supplies/tanks during grout preparation.
  • step S4 This supply of additives being controlled by negative weighing is performed in step S4, so that when the weight of additive in the respective supply 2, 3 has de- creased by a preset weight the corresponding additive valve 14, 15 closes.
  • the additive tanks are pressurized and the weight of supplied additives is calculated by the loss of weight therein, as measured with the negative weighing of the quantity withdrawn from the additive supplies.
  • step S5 the impeller of the mixer is started in order to create a vortex therein preventing that a lump is formed when cement is then supplied to the mixer in step S6.
  • the supply of cement to the mixer is started by the control unit 20 that activates a valve and motor causing a feed screw to convey cement from the bin 5 to the distributor 16 and from there to the mixer, through the cement supply valve 17.
  • step S7 Mixing is now performed for a prescribed time, such as for 30 seconds, in step S7.
  • the mixer weight is determined by the positive weighing of the mixer
  • the grout quantity that is ready to be fed to the agitator 7 is calculated by deducting from the detected positive weight a weight of residual grout mix remaining on the walls of the mixer.
  • prepared grout from the mixer 6A is fed to the agitator 7. Since the weight of grout remaining in the agitator 7 has been checked in step S8 by negative weighing, the total quantity of grout available in the agitator 7 is determined by adding the calculated weight of grout fed from the mixer to said weight detected by the negative weighing. The calculations are being made instantaneously so that there is no need to pause the mixer or agitator before or during the feeding of grout to the agitator.
  • step S9 In case the detection in step S9 indicates that the weight of the agitator 7 is too high the mixer 6A-6N is put on hold in step S10 and no pumping of grout G to the agitator 7 is started. If, on the other hand the value of the agitator weight detected in step Sl l is too low the control system sends a signal to the appropriate valve for conveying prepared grout G to the agitator 7 in step S I 2. In step S 13 the control unit adds the detected weight of grout removed from the mixer 6A-6N to the weight of the agitator 7. While grout G is being pumped from the agitator 7 as requested by the grouting equipment 8 the weight of the agitator 7 is continuously detected by negative weighing of the agitator in step S I 5.
  • step S I 6 the combined positive weighing of the mixer and negative weighing of the agitator enables calculation of the mass flow rate, e.g. the amount of grout withdrawn from the agitator in a given time and thereby of the required total mixer capacity for a specific batch.
  • the system may order the activation, in step 17, of another one of the mixers 6B-6N to prepare grout with the same composition.
  • this activation of a required further mixer or further mixers is carried out fully automatic by the control unit 20.
  • the weighing in the form of negative weighing at the agitator 7 is thereby part of the batch system as a flow control. From the above discussion it should be clear that the calculated flow of prepared grout G from the agitator 7 is used to determine when further mixers 6A-6N, in addition to a first one, must be activated for grout preparation. Thus, mixing grout G of the same composition may be performed in a number of mixers 6A-6N that are individually but interactively controlled by the common control unit 20. To these mixers is separately supplied water, cement and additives from a common supply 2-5, through separate flow control valves 13, 14, 15, 17, and the number of activated mixers depends upon the quantity of prepared grout G required by the injection equipment 8.
  • this apparatus 1 there is only one control unit 20 having several load cells, depending upon the number of mixers employed.
  • the load cells are all working in series for one and the same grout composition.
  • One load cell each is used for flow control and for additive weighing. This means that all load cells may work simultaneously and due to a use of several smaller mixers the lead time for each batch may be shortened., Mixing of 100 liters will require a mixing time of about 30 seconds and if the quantity is increased to 200 liters the mixing time will with a conventional system be 60 seconds and so forth. If, in a practical example of this described technology, it will take 37 seconds to prepare one grout composition, the use of e.g. six smaller mixers in the proposed configuration will make it possible to prepare six grout compositions in the same 37 seconds.
  • the control unit 20 uses a completely new approach based on the idea that the possibility to provide flow control is created by mixing positive and negative weighing. Such flow control involves the negative weighing of every prepared grout mix and a calculation of over time to obtain a mass flow rate. Weighing of the batches mixed in each mixer is performed positively in order to control the consumption of the ingredient materials. This provides a double control of how much grout there is in the agitator that by its load cells governs the flow control. By using this way of controlling how many mixers that must be active it will be possible with this process to control how many batches per minute the grouting system requires. This does in turn provide further advantages from an environmental point of view since there will be less material waste.
  • the configuration of the apparatus and the control functions of the method will make it possible to manually change the grout composition during the process, such as when grout injection into the rock is too quick, requiring a modification of the composition;
  • the mixers are operated sequentially in a number corresponding to the actual grout consumption as calculated from the result of the actual amount of grout withdrawn from the agitator;
  • the proposed technology permits faster grout injection in rock and by tunnelling work using fewer operators and with smaller impact on the environment.
  • the proposed apparatus and method makes it possible to inject into large diameter boreholes or multiple boreholes at the same time, with the mentioned reduced personnel;

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

L'invention concerne un procédé de préparation et d'administration de coulis (G) destiné à être injecté dans des trous de forage multiples ou de grand diamètre dans la roche ou le sol, un lot de coulis ayant une composition prédéfinie étant préparé par ajout régulé de quantités préétablies de composants, tels que de l'eau, du ciment et des additifs, depuis une alimentation respective (2-5), dans au moins deux mélangeurs (6A-6N) afin de les mélanger, une quantité de coulis préparée étant détectée au moyen du pesage positif du coulis préparé dans un mélangeur et le coulis préparé étant ensuite fourni à un agitateur (7) à partir duquel du coulis est pompé à la demande vers un équipement d'injection (8) afin de permettre son injection dans des trous de forage. Le procédé comprend une détection continue de la quantité de sortie de coulis à partir de l'agitateur et, de ce fait, du coulis amené vers l'équipement d'injection par pesage négatif, c'est-à-dire le pesage du coulis restant dans l'agitateur, pour ainsi permettre le calcul d'un débit massique, par exemple, la quantité de coulis retirée de l'agitateur pendant un laps de temps donné et, de ce fait, de la capacité du mélangeur totale requise pour un lot spécifique. L'invention concerne également un appareil permettant la mise en œuvre du procédé.
PCT/SE2016/050048 2015-01-27 2016-01-26 Préparation et administration de coulis WO2016122381A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16743791.2A EP3250353A4 (fr) 2015-01-27 2016-01-26 Préparation et administration de coulis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1550080-4 2015-01-27
SE1550080A SE1550080A1 (sv) 2015-01-27 2015-01-27 Grout preparation and administration

Publications (1)

Publication Number Publication Date
WO2016122381A1 true WO2016122381A1 (fr) 2016-08-04

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PCT/SE2016/050048 WO2016122381A1 (fr) 2015-01-27 2016-01-26 Préparation et administration de coulis

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EP (1) EP3250353A4 (fr)
SE (1) SE1550080A1 (fr)
WO (1) WO2016122381A1 (fr)

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CN108374567A (zh) * 2018-03-13 2018-08-07 安徽国信建设集团有限公司 一种双液单系统气压储能注浆机及注浆工艺
CN108705678A (zh) * 2018-03-23 2018-10-26 成都西易自动化系统工程有限公司 一种灌浆自动化生产系统
CN110965435A (zh) * 2019-11-26 2020-04-07 江苏东交智控科技集团股份有限公司 灌浆施工设备
CN114130233A (zh) * 2021-11-08 2022-03-04 中石化四机石油机械有限公司 固液混配连续泵送系统及其工艺方法
CN114984844A (zh) * 2022-06-12 2022-09-02 安徽金岩高岭土科技有限公司 一种免烧砖的搅拌系统
CN116020327A (zh) * 2023-03-29 2023-04-28 宁德时代新能源科技股份有限公司 一种用于检测搅拌机余料的检测系统、方法及搅拌系统
CN117577792A (zh) * 2024-01-16 2024-02-20 淄博火炬机电设备有限责任公司 正板栅灌浆系统

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CN108374567A (zh) * 2018-03-13 2018-08-07 安徽国信建设集团有限公司 一种双液单系统气压储能注浆机及注浆工艺
CN108374567B (zh) * 2018-03-13 2023-11-10 安徽国信建设集团有限公司 一种双液单系统气压储能注浆机及注浆工艺
CN108705678A (zh) * 2018-03-23 2018-10-26 成都西易自动化系统工程有限公司 一种灌浆自动化生产系统
CN110965435A (zh) * 2019-11-26 2020-04-07 江苏东交智控科技集团股份有限公司 灌浆施工设备
CN114130233A (zh) * 2021-11-08 2022-03-04 中石化四机石油机械有限公司 固液混配连续泵送系统及其工艺方法
CN114130233B (zh) * 2021-11-08 2023-07-11 中石化四机石油机械有限公司 固液混配连续泵送系统及其工艺方法
CN114984844A (zh) * 2022-06-12 2022-09-02 安徽金岩高岭土科技有限公司 一种免烧砖的搅拌系统
CN116020327A (zh) * 2023-03-29 2023-04-28 宁德时代新能源科技股份有限公司 一种用于检测搅拌机余料的检测系统、方法及搅拌系统
CN117577792A (zh) * 2024-01-16 2024-02-20 淄博火炬机电设备有限责任公司 正板栅灌浆系统
CN117577792B (zh) * 2024-01-16 2024-04-19 淄博火炬机电设备有限责任公司 正板栅灌浆系统

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