GB1586238A – Method and device for capping shafts
– Google Patents
GB1586238A – Method and device for capping shafts
– Google Patents
Method and device for capping shafts
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Publication number
GB1586238A
GB1586238A
GB3730277A
GB3730277A
GB1586238A
GB 1586238 A
GB1586238 A
GB 1586238A
GB 3730277 A
GB3730277 A
GB 3730277A
GB 3730277 A
GB3730277 A
GB 3730277A
GB 1586238 A
GB1586238 A
GB 1586238A
Authority
GB
United Kingdom
Prior art keywords
shaft
basket
mouth
dome
bell
Prior art date
1978-05-30
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.)
Expired
Application number
GB3730277A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
1978-05-30
Filing date
1978-05-30
Publication date
1981-03-18
1978-05-30
Application filed by Individual
filed
Critical
Individual
1978-05-30
Priority to GB3730277A
priority
Critical
patent/GB1586238A/en
1981-03-18
Publication of GB1586238A
publication
Critical
patent/GB1586238A/en
Status
Expired
legal-status
Critical
Current
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Espacenet
Global Dossier
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Classifications
E—FIXED CONSTRUCTIONS
E21—EARTH DRILLING; MINING
E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
E21B33/00—Sealing or packing boreholes or wells
E21B33/02—Surface sealing or packing
E—FIXED CONSTRUCTIONS
E21—EARTH DRILLING; MINING
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D7/00—Shaft equipment, e.g. timbering within the shaft
Description
(54) METHOD AND DEViCE FOR CAPPING SHAFTS
(71) I, ROBERT ERNEST FORD, a British citizen, of Old Hall, Brynford, Holywell,
Clwyd, North Wales, do hereby declare the invention, for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement:
The present invention concerns a method and device for capping mine shafts, wells and the like.
According to one aspect of the present invention a method of capping mineshafts and the like comprises locating a basket in the mouth of the shaft, introducing a load into the basket whereby to expand the basket into firm positive engagement with the wall of the shaft and securely lodge the load in position to block and seal the mouth of the shaft.
According to another aspect of the present invention a device for capping mineshafts and the like comprises a tapered basket adapted to fit within the mouth of the shaft to support a load introduced into the basket, the basket being expandable into firm engagement with the walls of the shaft under the influence of the load therein.
The invention will be described further, by way of example, with reference to the accompanying diagrammatic drawings; in which: Fig. 1 shows a mine shaft capped with one embodiment of the invention; and
Fig. 2 illustrates a basket for locating in the mouth of a shaft.
With reference to the drawings, Fig. 1 shows a mineshaft 1 which is capped and sealed by means of a basket 2, shown in
Fig. 2, filled with stones, rocks, boulders and the like 3 and covered with a bell or dome 4.
The basket 2 is preferably formed from galvanised steel bars which are welded together. The basket has a grid base 5, preferably hexagonal, and rods or bars 6 extend upwardly from the junctions of the sides of the hexagonal. The upper ends of the rods or bars 6 are joined by further rods or bars 7.
The basket is tapered such that it is larger at the top than at the bottom. Conveniently the basket is approximately 2 foot in height.
Transverse rods or bars 9 extend between the rods or bars 6 and these are located nearer the grid 5 than the open top end of the basket. For example, the rods or bars 9 can be about eight inches above the grid base 5.
The basket is fitted into the mouth of the shaft to be capped. The taper assists in enabling the basket to enter the mouth of the shaft. If desired the basket can be provided with an upper lip or rim to engage the ground about the mouth of the shaft. Upon inserting in position the basket is loaded with any convenient material, usually stones, rubble, rocks or the like which are available on site.
The effect of loading the basket is to cause the basket to expand or deform outwardly and into firm engagement with the wall of the shaft at and immediately below the mouth. The basket in effect becomes jammed in position under the influence of the weight of the rocks and the like. The effect is the equivalent of forming a single boulder from a number of small rocks and then forcing the boulder into the mouth of the shaft.
The loaded basket not only closes the mouth of the shaft but as it is expanded or deformed into engagement with the wall of the shaft it furthermore supports the wall and so prevents collapse inwardly into the shaft. The rocks and the like in the basket can if required be covered with a layer of concrete.
The basket can be covered with a bell or dome 4. This can also be constructed from galvanised steel bar and is similar to the basket. The bell or dome can be partially or completely filled with rocks and the like.
The bell or dome can then be covered with earth, rocks and the like. The basket and dome can be integral or formed as separate units.
which can be linked together. Alternatively, the basket and dome can be used separately.
It has been found that a hexagonal basket is a suitable shape for expanding outwardly when filled with rocks and the like. However other polygonal shapes are believed to be suitable and effective. In each case it is desirable to employ a tapered basket which can fit readily into the mouth of the shaft with the upper end of the basket protrucing initially above and radially outwardly beyond the boundary of the shaft. Filling the basket with rocks and the like then forces the basket into firm engagement with the mouth of the shaft.
The basket, and also the dome or bell, can be made in a variety of different sizes to suit the diameters of shafts to be capped.
The device effectively seals the shaft, not only from safety to prevent persons falling down the shaft but also to prevent the tipping and disposal of obnoxious and dangerous wastes which could pollute underground water courses.
The basket functions as a stabiliser and it holds the dome over the mouth of the shaft.
The dome when filled and/or covered with stones and the like prevents access to the mouth of the shaft. The pressure of the material about the dome around the mouth of the shaft further ensures that the basket (or stabiliser) is more securely “nipped” in the mouth of the shaft.
WHAT I CLAIM IS:
1. A method of capping mineshafts and the like which comprises locating a basket in the mouth of the shaft, introducing a load into the basket whereby to expand the basket into firm positive engagement with the wall of the shaft and securely lodge the load in position to block and seal the mouth of the shaft.
2. A method as claimed in claim 1 which comprises positioning a bell or dome above the shaft.
3. A device for capping mineshafts and the like comprising a tapered basket adapted to fit within the mouth of the shaft to support a load introduced into the basket, the basket being expandable into firm engagement with the walls of the shaft under the influence of the load therein.
4. A device as claimed in claim 3 including a bell or dome for location above the shaft.
5. A device as claimed in claim 4 in which the bell or dome and the basket are integral.
6. A device as claimed in claim 4 or 5 in which the bell or dome and the basket are formed from galvanised steel.
7. A device as claimed in any of claims 3 to 6 in which the basket is hexagonal.
8. A device for capping mineshafts comprising a bell or dome dimensioned to fit over the mouth of the shaft and a basket suspended from the bell or dome to fit within the mouth of the shaft to receive a load whereby the basket is deformed into positive engagement with the wall of the shaft.
9. A method of capping mineshafts substantially as herein described with reference to the accompanying drawings.
10. A device for capping mineshafts and the like substantially as herein described with reference to and as illustrated in the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (10)
**WARNING** start of CLMS field may overlap end of DESC **. into firm engagement with the mouth of the shaft. The basket, and also the dome or bell, can be made in a variety of different sizes to suit the diameters of shafts to be capped. The device effectively seals the shaft, not only from safety to prevent persons falling down the shaft but also to prevent the tipping and disposal of obnoxious and dangerous wastes which could pollute underground water courses. The basket functions as a stabiliser and it holds the dome over the mouth of the shaft. The dome when filled and/or covered with stones and the like prevents access to the mouth of the shaft. The pressure of the material about the dome around the mouth of the shaft further ensures that the basket (or stabiliser) is more securely “nipped” in the mouth of the shaft. WHAT I CLAIM IS:
1. A method of capping mineshafts and the like which comprises locating a basket in the mouth of the shaft, introducing a load into the basket whereby to expand the basket into firm positive engagement with the wall of the shaft and securely lodge the load in position to block and seal the mouth of the shaft.
2. A method as claimed in claim 1 which comprises positioning a bell or dome above the shaft.
3. A device for capping mineshafts and the like comprising a tapered basket adapted to fit within the mouth of the shaft to support a load introduced into the basket, the basket being expandable into firm engagement with the walls of the shaft under the influence of the load therein.
4. A device as claimed in claim 3 including a bell or dome for location above the shaft.
5. A device as claimed in claim 4 in which the bell or dome and the basket are integral.
6. A device as claimed in claim 4 or 5 in which the bell or dome and the basket are formed from galvanised steel.
7. A device as claimed in any of claims 3 to 6 in which the basket is hexagonal.
8. A device for capping mineshafts comprising a bell or dome dimensioned to fit over the mouth of the shaft and a basket suspended from the bell or dome to fit within the mouth of the shaft to receive a load whereby the basket is deformed into positive engagement with the wall of the shaft.
9. A method of capping mineshafts substantially as herein described with reference to the accompanying drawings.
10. A device for capping mineshafts and the like substantially as herein described with reference to and as illustrated in the accompanying drawings.
GB3730277A
1978-05-30
1978-05-30
Method and device for capping shafts
Expired
GB1586238A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB3730277A
GB1586238A
(en)
1978-05-30
1978-05-30
Method and device for capping shafts
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB3730277A
GB1586238A
(en)
1978-05-30
1978-05-30
Method and device for capping shafts
Publications (1)
Publication Number
Publication Date
GB1586238A
true
GB1586238A
(en)
1981-03-18
Family
ID=10395401
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3730277A
Expired
GB1586238A
(en)
1978-05-30
1978-05-30
Method and device for capping shafts
Country Status (1)
Country
Link
GB
(1)
GB1586238A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4685830A
(en)
*
1984-11-09
1987-08-11
Ford Robert E
Mineshaft closures
DE3632584C1
(en)
*
1986-09-25
1988-03-24
Ruhrkohle Ag
Device to prevent the danger of shafts due to ice formation
1978
1978-05-30
GB
GB3730277A
patent/GB1586238A/en
not_active
Expired
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4685830A
(en)
*
1984-11-09
1987-08-11
Ford Robert E
Mineshaft closures
DE3632584C1
(en)
*
1986-09-25
1988-03-24
Ruhrkohle Ag
Device to prevent the danger of shafts due to ice formation
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Legal Events
Date
Code
Title
Description
1981-07-22
PS
Patent sealed
1992-01-22
PCNP
Patent ceased through non-payment of renewal fee
