GB2122909A - Injection of partially dry-mixed consolidating or filling materials - Google Patents
Injection of partially dry-mixed consolidating or filling materials Download PDFInfo
- Publication number
- GB2122909A GB2122909A GB08317695A GB8317695A GB2122909A GB 2122909 A GB2122909 A GB 2122909A GB 08317695 A GB08317695 A GB 08317695A GB 8317695 A GB8317695 A GB 8317695A GB 2122909 A GB2122909 A GB 2122909A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nozzle
- water
- consolidating
- supply hose
- delivery
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 40
- 238000002347 injection Methods 0.000 title claims description 3
- 239000007924 injection Substances 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000005065 mining Methods 0.000 claims abstract description 7
- 239000011435 rock Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 4
- 238000009736 wetting Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 230000002685 pulmonary effect Effects 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/02—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions without using driven mechanical means effecting the mixing
- B28C5/026—Mixing guns or nozzles; Injector mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
- B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
- B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
- B01F25/31423—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction with a plurality of perforations in the circumferential direction only and covering the whole circumference
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G2021/049—Devices for both conveying and distributing concrete mixing nozzles specially adapted for conveying devices
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Dispersion Chemistry (AREA)
- Nozzles (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
A partially dry-mixed material for consolidating the surrounding rock structure in mining is wetted during its passage from a supply hose (1) into a delivery nozzle (2) by water supplied through a feed pipe (4) and injected at a pressure of more than 20 bars into a mixing chamber (3) at a point located at a distance from the delivery end of the nozzle which is 12 to 15 times greater than the inside diameter of the supply hose (1). <IMAGE>
Description
SPECIFICATION
Injection of partially dry-mixed consolidating or filling materials
It is known to produce compositions from gypsum, power station filter ash, cement and similar materials for consolidating the surrounding rock structure in mining. These partially dry-mixed substances are transported to the place of use through pipelines or conveyor hoses by means of compressed air.
The distances involved vary widely.
At the end of the pneumatic delivery path, a flexible delivery hose is usually provided which is connected to a nozzle, into which water is introduced, at the final delivery section, so that the mixture which is to be delivered is wetted in order to avoid any risk of the operator or any workers employed in the immediate vicinity being affected by dust or suffering any dust-related pulmonary conditions and in order to bind the consolidating composition or the filling material.
Such nozzles which include a mixing chamber and, in most cases, a ring of water supply apertures, are not capable of producing optimum conditions since either the quantity of water is so great that it will not spray or the setting of the consolidating materials is retarded, or the quantity of water is too small and dust arises.
In order to achieve an optimum delivery nozzle system, it has been found, according to the invention, that the distance between the point of introduction of the water and the point of discharge of the material blended with the water, should be some 12 to 1 5 times greater than the diameter of the material feed hose leading to the nozzle, and that the water injected should not be supplied at less than 20 bars pressure at the entry to the nozzle.This means that in the case of a material supply hose having an inside diameter of 35 mm, a nozzle length of around 500 mm should be chosen, and the supply of water to the pneumatically-conveyed material, through a ring or a supply nozzle disposed in the flow path of the material is effected at the entry to the nozzle at about 25 bars pressure, to ensure that the presence of dust is sufficiently slight for there to be no effect on workers in the immediate surroundings and at the same time achieve an adequate enrichment of the solids-water mixture.
The accompanying drawing illustrates one form of apparatus for carrying out the invention. In the drawing the reference numeral 1 denotes a material feed hose, 2 illustrates a nozzle, 3 denotes a mixing chamber and 4 a water feed pipe.
It goes without saying that the invention is not confined to the embodiment shown in detail and described herein-above. Instead, numerous modifications are possible without however departing from the basic inventive concept of using a nozzle device for injecting a wet composition comprising gypsum, cement filter ash and similar materials, preferably for use as a gallery consolidating material or as a filling material in underground mining, in which the distance between the water feed point and the material discharge point is about 1 2 to 1 5 times greater than the inside diameter of the material supply hose, while the water is supplied at a pressure of more than 20 bars.
1. A method of wetting a gallery consolidating and/or fill material, preferably for underground mining, supplied through a supply hose to a delivery nozzle, characterised in that water is injected into the material at a point located at a distance from the delivery end of the nozzle which is 1 2 to 1 5 times greater than the inside diameter of the supply hose and in that the water is delivered at a pressure of more than 20 bars.
2. Apparatus for carrying out the method of
Claim 1, comprising a material supply hose, a nozzle secured to the end of said supply hose and means for injecting water into the entry end of said nozzle at a pressure of more than 20 bars, at a point located at a distance from the delivery end of the nozzle which is 1 2 to 1 5 times greater than the diameter of the supply hose.
3. A method of wetting a gallery consolidating and/or fill material, substantially as hereinbefore described with reference to the accompanying drawing.
4. Apparatus for carrying out the method of
Claim 1, substantially as hereinbefore described and as shown in the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (4)
1. A method of wetting a gallery consolidating and/or fill material, preferably for underground mining, supplied through a supply hose to a delivery nozzle, characterised in that water is injected into the material at a point located at a distance from the delivery end of the nozzle which is 1 2 to 1 5 times greater than the inside diameter of the supply hose and in that the water is delivered at a pressure of more than 20 bars.
2. Apparatus for carrying out the method of
Claim 1, comprising a material supply hose, a nozzle secured to the end of said supply hose and means for injecting water into the entry end of said nozzle at a pressure of more than 20 bars, at a point located at a distance from the delivery end of the nozzle which is 1 2 to 1 5 times greater than the diameter of the supply hose.
3. A method of wetting a gallery consolidating and/or fill material, substantially as hereinbefore described with reference to the accompanying drawing.
4. Apparatus for carrying out the method of
Claim 1, substantially as hereinbefore described and as shown in the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823224532 DE3224532A1 (en) | 1982-07-01 | 1982-07-01 | SPRAY NOZZLE FOR THE APPLICATION OF DRY MIXED CONSOLIDATION OR Damm building materials, preferably in underground mining |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8317695D0 GB8317695D0 (en) | 1983-08-03 |
| GB2122909A true GB2122909A (en) | 1984-01-25 |
| GB2122909B GB2122909B (en) | 1985-09-11 |
Family
ID=6167300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08317695A Expired GB2122909B (en) | 1982-07-01 | 1983-06-29 | Injection of partially dry-mixed consolidating or filling materials |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE3224532A1 (en) |
| FR (1) | FR2529615A1 (en) |
| GB (1) | GB2122909B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2233572A (en) * | 1989-07-10 | 1991-01-16 | Neptune Orient Lines Limited | Producing water-in-oil emulsions |
| FR2798092A1 (en) * | 1999-11-15 | 2001-03-09 | Lafarge Refractories | Lance for spraying a dry concrete and its associated moistening collar that allows the dry product to be moistened at high pressure during the spraying operation, notably applicable for repair of refractory linings |
| WO2001017924A1 (en) * | 1999-09-06 | 2001-03-15 | Lafarge Refractories | Method for spraying concrete by dry process, corresponding spray nozzle and wetting ring |
| CN110552719A (en) * | 2019-10-10 | 2019-12-10 | 河南理工大学 | A shower nozzle for concrete sprayer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1734616U (en) * | 1956-06-22 | 1956-11-29 | Haertereigesellschaft Bochum M | PIPING FOR THE BLOW OFFSET. |
| DE1761208U (en) * | 1957-12-04 | 1958-02-13 | Brieden & Co Maschf K | ELBOW FOR BLOW ADAPTER PIPES. |
| DE1761209U (en) * | 1957-12-12 | 1958-02-13 | Hermann Wingerath K G | BLOW ADAPTATION PIPE WITH DEVICE FOR ADDING WATER TO THE ADDITIONAL MATERIAL. |
| US3708124A (en) * | 1968-06-07 | 1973-01-02 | P Kellert | Cement spray gun |
| DE2550946A1 (en) * | 1975-11-13 | 1977-05-18 | H Guenter Ziolkowski | Spray lance and spray method for refractory masses |
| DE2556797C3 (en) * | 1975-12-17 | 1979-11-08 | Kurt 5620 Velbert Wolf | Injection machine for powdery masses |
| DE7933983U1 (en) * | 1979-12-03 | 1980-03-27 | Ruhrkohle Ag, 4300 Essen | SPRAY NOZZLE FOR CEMENT MORTAR OR THE LIKE |
-
1982
- 1982-07-01 DE DE19823224532 patent/DE3224532A1/en not_active Ceased
-
1983
- 1983-06-21 FR FR8310264A patent/FR2529615A1/en active Granted
- 1983-06-29 GB GB08317695A patent/GB2122909B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2233572A (en) * | 1989-07-10 | 1991-01-16 | Neptune Orient Lines Limited | Producing water-in-oil emulsions |
| GB2233572B (en) * | 1989-07-10 | 1994-03-23 | Neptune Orient Lines Limited | Method and apparatus for producing layer-in-oil emulsions |
| WO2001017924A1 (en) * | 1999-09-06 | 2001-03-15 | Lafarge Refractories | Method for spraying concrete by dry process, corresponding spray nozzle and wetting ring |
| FR2798092A1 (en) * | 1999-11-15 | 2001-03-09 | Lafarge Refractories | Lance for spraying a dry concrete and its associated moistening collar that allows the dry product to be moistened at high pressure during the spraying operation, notably applicable for repair of refractory linings |
| CN110552719A (en) * | 2019-10-10 | 2019-12-10 | 河南理工大学 | A shower nozzle for concrete sprayer |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2529615A1 (en) | 1984-01-06 |
| FR2529615B3 (en) | 1985-05-03 |
| GB8317695D0 (en) | 1983-08-03 |
| DE3224532A1 (en) | 1984-01-05 |
| GB2122909B (en) | 1985-09-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |