CA2155139A1 - Borehole ventilation sealcover - Google Patents
Borehole ventilation sealcoverInfo
- Publication number
- CA2155139A1 CA2155139A1 CA002155139A CA2155139A CA2155139A1 CA 2155139 A1 CA2155139 A1 CA 2155139A1 CA 002155139 A CA002155139 A CA 002155139A CA 2155139 A CA2155139 A CA 2155139A CA 2155139 A1 CA2155139 A1 CA 2155139A1
- Authority
- CA
- Canada
- Prior art keywords
- bore hole
- hole cover
- tires
- ring
- members
- 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.)
- Abandoned
Links
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
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- 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
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/16—Shaft covers
Abstract
A simple bore hole plug for either temporarily or permanently sealing mine bore holes and ventilating shafts or the like is described. A plurality of used motor vehicle tires are arranged one upon the other coaxially in increasing order of diameter. Steel plates are placed at the top and bottom of the tire pile and maintained in spaced relation by means of a metal separator pipe. A steel rod having a lifting eye at one end and a threaded portion at the other end, is passed axially through the pipe and a nut is tightened on the threaded portion to draw the tires tightly together.
Description
2;~ 3 9 ~ 2 1 5~ ~ 3 9 80REHO~ E VENTILATIO~ 8EALCOVER
Ft e l d of It~venti on This in~ention relates to a plug ~or ~3eal ing boreholes and the 1 ike and more particularlY to a borehole plug ~or use in venti lating sha~t& tn underground mi nes .
~a~k~round o~ InventiQn In stope mining d~ill;ny i8 carried out at an upper leve~ whtle mucking, or removal of th~ mined rock, is carried out at a lower level ln the mine.
These level~ are connected by rai~ed ~ore~ down which mined ore or backfi 11 ~re passed as approprlate. There are periods of time, therefore, when both the stope cap and mucking brow are open which p~ovides an al'cern~te by-pas8 route for ventilat1on air which could be better used in the main dri~ts of the mine. In some ca~es reverse ai r ~1 ows can occur. It i~, therefore, prud~nt practi~e to limit the period of time the brow ls left open and also to provide ventilation curtains in the appropriate stope acce88. Ventilation curtains are, howe~e~, very expensiv~ to build and maintain and in any ~vent they fre~uently l~ek an~ cannot withstand the ~hock wave created by undarground blaQting operations.
Many attempts to ci rcumvent the problems en~ountered with ventilation curtains haYe been made with only l;mited success. Such ~ttempts include foam ~arrier~, ~1~ S 13 g which do not stand up to tho risours of und~rsround mining operations; flat s~eel ra1~e-boro ~overs which can be co~ered ~ith loose muck to hold them in place but which ~re only satisfactory a~ permanent install~tions, require ~mooth sur~aces to make an a~equate seal and which ar susceptible to ~ovement due to concussion sh~c~; and inflatable balloon pluss rather 1 ike a naviga~ional or mooring buoy which can be infl~ted to about 54" diameter to ~eal ag~inst the walls of a circu~r hole. ~alloon plugs are effs~t1ve ~8 i~ they are moved by blast they settle back ln~o pl~ce, but they suffer from the disadvantage that they do not pre~ent inadvertent acc~ss to the raise nor do they safely co~er a fill hole and thus requi re add i t i onal barricadin~.
There i-~, ~herefore a considerable need for an inexpen~tve ral~;e bore cover which c~n be used tndependently of venti lation curtains or the l ike, which can be quickly and easily in~alted and equally qu1ckly be removed or which can be permanently ~esled into p l ace ~
O~.i ec~ of I nvent i on Thu i~ is an ob3ect o~ ~he present invention to provtd~ a simple, effective bore hole raise plug which can be used either as a permanent p~ug or a6 a removable plug without resortin~3 to venti lation curtains anc~ the 1 i ke .
~lS5~.~9 It is a further object of the invent;on to prov1d~
a bore hole pl ug which uses r~cycled waste mat~r1als and in particul~r æcrap automobile and truck tire~.
Sta~ement of I nventi on Thus, by one aspect of this invention there i8 provided a bore hole cover comprising: a plural ity of hollow rins members of selected diameters hAving ~ub~tanti~l 1 y paral lel oppo~ed ~tdes ~rransed in overl yl ng pl anar c~xi al re l ati onshi p i n order of i n~reasi ng di an~eter;
a pair of ~ubstantially rigid disc memberQ arran~ed in planar spaced coaxial relation~hip or respective oppostte sicl~s of ~;aid coaxial ly arranged rins members;
a tubular spacer member mounted coaxi~lly betw~en 8aid d i sc mem~ers and;
rod mean~ coaxi~lly arranged in said tubular Rpacer mem~e r .
~rie~ ~e~;criDtion of Drawinq~
Fi~ure 1 is a schemat;c croQs sectional view of a stope mi ne Fige~re 2 is a cross section~l view of a borehole ventilation seal co~er ef the pre~ent invention.
r ~, .
Deta;led Descri~tion of ~referrcd F~bodiments Fi~ure 1 ~hows a cros~ section throush a typtcal mine and ~hows ~ serie6 of levels and sub-lsvels t,~,3,4 and ~. Ore i 8 mined from the stope 6 above level 1 and pas~ed thro~sh rai~ borQ holeg 7,8 to ~ub-level~ 2 or 3 fron~ which it is removed to the surf~ce. lhe stope, between levels 3 and 5 has been worked out and ts, therefore, ready to receive waste rock and other back~ill which ts brousht in via bore holes 7,a.
It wi 11 be appre~tated that bore holes 7 ,8 provide con6iderable opportunity for short ci rcui~ing the at r vqntllatton ~ys~em along the vartous level8 of the mine, i~ th~y are lef~ open when ore or mueking operati~ns are not in pro~ress. Ag not~d above closin~ of or at least r-ed~cing the air flow through the rai8e holes i8 not easy to accompl; ~h . f i gurs 2 shows ral ~;e b~re hol e 7 fitted with a seal c~ver 1~, accordin~ to the present tnvention. Ct~ver 10 comprises a lo~r cl rcular metal plate 11, typ;cally ~.bout Z4" in di~neter and 1/4"
thick, an u~per circular metal plate t2, typically about 48 " i n dt ame~er and 1/4" thick ~parated from Qach oth~r spac~r pipe 13, typically 2" ln dlameter. A rod ~4, having a r~ng 15 ~t ~he upper end and threaded at lower end 1~ is ~as~ed coaxially through pipe 13 ancl bolted ln pla~e w1th nut 17. Coaxtal ly mo~nted on pipe ~3 in overlying planar rel~tionship are a plural tty of u~d vehicle t~re~ ta, of varying dtameter. Ths tires are arran~ed in increasing order of diameter from plate 11 to platQ 12. Prefera~ly, as shown in Fi~ure 2, five tires 1g, 20, 21, ~ and 23 are provided, ~ut of cour~e this may be varled depending ~pon local condition8 and the like. Thus tire 1g may be an ol d car tire, ti res 20 and 21 may be li~ht truck tire~, tire 22 may b~ a heavy truck tire and tire 23 may be a tr~ctor tire or ~he like, so that wh~n a6~embled the device i 8 rOU5h 1 y uni~ormly conical in section. The upper fac~ of each tire (as seen in Fi~ure 2~ i8 provided with a plurality of vertical pins 24, prefer~bly about ~ix spaced un i f o rml y around an tntermediate diamete r th~rof which is in~erted into a respective mating hole in the lower sur~ace of the abuttlny tire so as to hold each tire in fixed relation to it~ neighbour. Pl~tes 11 and 12 are drtlled around an intermediate diameter thereof and ~ 8 25, 26 etc, are screwed tnto the adjacent face~ of the tires adjacent thereto so as to prevent rotation of plates during us~. A~er as8embly nut 17 is tightened to draw the tire~ tnto juxtapositten and form a unit~ry whole.
It will, of course, be ~pprectated that whi le Ftgure 2 shows eye 15 adjacent tha large end 14 af the devicel this is merely a matter of choice and the rod 14 may be reversed 80 that eye lS i~ adjacent the small end 1 1 .
In ~e, in the confi9uration o~ ~19ure 2, the d~3vice ~s lif'ced by a crane or othe~r lt~tin~ device, such as a rope and pulleY system or a hydraul1c picton, over a bore hole 7 and then lowered into contact with the wal ls thereof, where lt can be pre~Red into ti3ht contact. If desi red to ~eal the bore hol e perrnanentl y, muck and/or concret~ ~an be poured on top to form a permanent seal. In the event that it ts desi red to u~e the plug ~or tsmporar~ly sealing a muckin~ holo, the device m~y ~e uaed with the large end 10 down with the small end 11 ~nd eye 1S upper~ost. The plug is then pulled up~ardly through the hole from the hottom unti1 it en~n~es with thc walls. It i~ held in place by a rope~wire tac~le 8y8tem and a hydraulic cylinder (not shown). When it is desired to open the hole, the cyl inder may be actuated to lower the plus into the bore hole and ore/muck can be pa6~ed around the lowered plus.
Ft e l d of It~venti on This in~ention relates to a plug ~or ~3eal ing boreholes and the 1 ike and more particularlY to a borehole plug ~or use in venti lating sha~t& tn underground mi nes .
~a~k~round o~ InventiQn In stope mining d~ill;ny i8 carried out at an upper leve~ whtle mucking, or removal of th~ mined rock, is carried out at a lower level ln the mine.
These level~ are connected by rai~ed ~ore~ down which mined ore or backfi 11 ~re passed as approprlate. There are periods of time, therefore, when both the stope cap and mucking brow are open which p~ovides an al'cern~te by-pas8 route for ventilat1on air which could be better used in the main dri~ts of the mine. In some ca~es reverse ai r ~1 ows can occur. It i~, therefore, prud~nt practi~e to limit the period of time the brow ls left open and also to provide ventilation curtains in the appropriate stope acce88. Ventilation curtains are, howe~e~, very expensiv~ to build and maintain and in any ~vent they fre~uently l~ek an~ cannot withstand the ~hock wave created by undarground blaQting operations.
Many attempts to ci rcumvent the problems en~ountered with ventilation curtains haYe been made with only l;mited success. Such ~ttempts include foam ~arrier~, ~1~ S 13 g which do not stand up to tho risours of und~rsround mining operations; flat s~eel ra1~e-boro ~overs which can be co~ered ~ith loose muck to hold them in place but which ~re only satisfactory a~ permanent install~tions, require ~mooth sur~aces to make an a~equate seal and which ar susceptible to ~ovement due to concussion sh~c~; and inflatable balloon pluss rather 1 ike a naviga~ional or mooring buoy which can be infl~ted to about 54" diameter to ~eal ag~inst the walls of a circu~r hole. ~alloon plugs are effs~t1ve ~8 i~ they are moved by blast they settle back ln~o pl~ce, but they suffer from the disadvantage that they do not pre~ent inadvertent acc~ss to the raise nor do they safely co~er a fill hole and thus requi re add i t i onal barricadin~.
There i-~, ~herefore a considerable need for an inexpen~tve ral~;e bore cover which c~n be used tndependently of venti lation curtains or the l ike, which can be quickly and easily in~alted and equally qu1ckly be removed or which can be permanently ~esled into p l ace ~
O~.i ec~ of I nvent i on Thu i~ is an ob3ect o~ ~he present invention to provtd~ a simple, effective bore hole raise plug which can be used either as a permanent p~ug or a6 a removable plug without resortin~3 to venti lation curtains anc~ the 1 i ke .
~lS5~.~9 It is a further object of the invent;on to prov1d~
a bore hole pl ug which uses r~cycled waste mat~r1als and in particul~r æcrap automobile and truck tire~.
Sta~ement of I nventi on Thus, by one aspect of this invention there i8 provided a bore hole cover comprising: a plural ity of hollow rins members of selected diameters hAving ~ub~tanti~l 1 y paral lel oppo~ed ~tdes ~rransed in overl yl ng pl anar c~xi al re l ati onshi p i n order of i n~reasi ng di an~eter;
a pair of ~ubstantially rigid disc memberQ arran~ed in planar spaced coaxial relation~hip or respective oppostte sicl~s of ~;aid coaxial ly arranged rins members;
a tubular spacer member mounted coaxi~lly betw~en 8aid d i sc mem~ers and;
rod mean~ coaxi~lly arranged in said tubular Rpacer mem~e r .
~rie~ ~e~;criDtion of Drawinq~
Fi~ure 1 is a schemat;c croQs sectional view of a stope mi ne Fige~re 2 is a cross section~l view of a borehole ventilation seal co~er ef the pre~ent invention.
r ~, .
Deta;led Descri~tion of ~referrcd F~bodiments Fi~ure 1 ~hows a cros~ section throush a typtcal mine and ~hows ~ serie6 of levels and sub-lsvels t,~,3,4 and ~. Ore i 8 mined from the stope 6 above level 1 and pas~ed thro~sh rai~ borQ holeg 7,8 to ~ub-level~ 2 or 3 fron~ which it is removed to the surf~ce. lhe stope, between levels 3 and 5 has been worked out and ts, therefore, ready to receive waste rock and other back~ill which ts brousht in via bore holes 7,a.
It wi 11 be appre~tated that bore holes 7 ,8 provide con6iderable opportunity for short ci rcui~ing the at r vqntllatton ~ys~em along the vartous level8 of the mine, i~ th~y are lef~ open when ore or mueking operati~ns are not in pro~ress. Ag not~d above closin~ of or at least r-ed~cing the air flow through the rai8e holes i8 not easy to accompl; ~h . f i gurs 2 shows ral ~;e b~re hol e 7 fitted with a seal c~ver 1~, accordin~ to the present tnvention. Ct~ver 10 comprises a lo~r cl rcular metal plate 11, typ;cally ~.bout Z4" in di~neter and 1/4"
thick, an u~per circular metal plate t2, typically about 48 " i n dt ame~er and 1/4" thick ~parated from Qach oth~r spac~r pipe 13, typically 2" ln dlameter. A rod ~4, having a r~ng 15 ~t ~he upper end and threaded at lower end 1~ is ~as~ed coaxially through pipe 13 ancl bolted ln pla~e w1th nut 17. Coaxtal ly mo~nted on pipe ~3 in overlying planar rel~tionship are a plural tty of u~d vehicle t~re~ ta, of varying dtameter. Ths tires are arran~ed in increasing order of diameter from plate 11 to platQ 12. Prefera~ly, as shown in Fi~ure 2, five tires 1g, 20, 21, ~ and 23 are provided, ~ut of cour~e this may be varled depending ~pon local condition8 and the like. Thus tire 1g may be an ol d car tire, ti res 20 and 21 may be li~ht truck tire~, tire 22 may b~ a heavy truck tire and tire 23 may be a tr~ctor tire or ~he like, so that wh~n a6~embled the device i 8 rOU5h 1 y uni~ormly conical in section. The upper fac~ of each tire (as seen in Fi~ure 2~ i8 provided with a plurality of vertical pins 24, prefer~bly about ~ix spaced un i f o rml y around an tntermediate diamete r th~rof which is in~erted into a respective mating hole in the lower sur~ace of the abuttlny tire so as to hold each tire in fixed relation to it~ neighbour. Pl~tes 11 and 12 are drtlled around an intermediate diameter thereof and ~ 8 25, 26 etc, are screwed tnto the adjacent face~ of the tires adjacent thereto so as to prevent rotation of plates during us~. A~er as8embly nut 17 is tightened to draw the tire~ tnto juxtapositten and form a unit~ry whole.
It will, of course, be ~pprectated that whi le Ftgure 2 shows eye 15 adjacent tha large end 14 af the devicel this is merely a matter of choice and the rod 14 may be reversed 80 that eye lS i~ adjacent the small end 1 1 .
In ~e, in the confi9uration o~ ~19ure 2, the d~3vice ~s lif'ced by a crane or othe~r lt~tin~ device, such as a rope and pulleY system or a hydraul1c picton, over a bore hole 7 and then lowered into contact with the wal ls thereof, where lt can be pre~Red into ti3ht contact. If desi red to ~eal the bore hol e perrnanentl y, muck and/or concret~ ~an be poured on top to form a permanent seal. In the event that it ts desi red to u~e the plug ~or tsmporar~ly sealing a muckin~ holo, the device m~y ~e uaed with the large end 10 down with the small end 11 ~nd eye 1S upper~ost. The plug is then pulled up~ardly through the hole from the hottom unti1 it en~n~es with thc walls. It i~ held in place by a rope~wire tac~le 8y8tem and a hydraulic cylinder (not shown). When it is desired to open the hole, the cyl inder may be actuated to lower the plus into the bore hole and ore/muck can be pa6~ed around the lowered plus.
Claims (8)
1. A bore hole cover comprising: a plurality of hollow ring members of selected diameters having substantially parallel opposed sides arranged in overlying planar coaxial relationship in order of increasing diameter;
a pair of substantially rigid disc members arranged in planar spaced coaxial relationship on respective opposite sides of said coaxially arranged ring members; a tubular spacer member mounted coaxially between said disc members; and rod means coaxially arranged in said tubular spacer member.
a pair of substantially rigid disc members arranged in planar spaced coaxial relationship on respective opposite sides of said coaxially arranged ring members; a tubular spacer member mounted coaxially between said disc members; and rod means coaxially arranged in said tubular spacer member.
2. A bore hole cover as claimed in claim 1 wherein said ring members comprise vehicle tires.
3. A bore hole cover as claimed in claim 2 wherein said vehicle tires are selected from automobile tires, truck tires and tractor tires.
4. A bore hole cover as claimed in claim 1 wherein said rod means includes integrally formed lifting means at one longitudinal end thereof.
5. A bore hole cover as claimed in claim 4 wherein said rod means includes a threaded portion at a second longitudinal end thereof.
6. A bore hole cover as claimed in claim ... including locating means between adjacent said ring means.
7. A bore hole cover as claimed in claim 6 wherein said locating means comprise a plurality of longitudinal pin means spaced around selected diameters in said ring means.
8. Each and every novel feature or novel combination of features herein disclosed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/429,555 | 1995-04-27 | ||
| US08/429,555 US5509477A (en) | 1995-04-27 | 1995-04-27 | Borehole ventilation sealcover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2155139A1 true CA2155139A1 (en) | 1996-10-28 |
Family
ID=23703752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002155139A Abandoned CA2155139A1 (en) | 1995-04-27 | 1995-08-01 | Borehole ventilation sealcover |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5509477A (en) |
| CA (1) | CA2155139A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8887812B2 (en) * | 2010-06-25 | 2014-11-18 | Safestack Technology L.L.C. | Apparatus and method for isolating and securing an underwater oil wellhead and blowout preventer |
| US8413583B2 (en) * | 2010-07-23 | 2013-04-09 | Samuel T. Sloan | Hole covering and locator |
| US9133698B2 (en) * | 2010-12-21 | 2015-09-15 | Federal-Mogul Corporation | Modular fracture plug and method of construction thereof |
| CN103899345A (en) * | 2013-12-04 | 2014-07-02 | 国家电网公司 | Portable air-exchange well lid |
| CN113944300B (en) * | 2021-09-14 | 2023-03-17 | 广州地铁设计研究院股份有限公司 | Hydrodynamic force anti-backflow air shaft |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1467877A (en) * | 1921-10-10 | 1923-09-11 | Albert L Rea | Automatic stuffing box |
| US1557915A (en) * | 1922-08-28 | 1925-10-20 | Walter G Black | Pressure controller for oil wells |
| US1762211A (en) * | 1928-12-19 | 1930-06-10 | Harold P Shoebridge | Oil saver and packing head |
| US2255829A (en) * | 1939-06-20 | 1941-09-16 | Ferdinand J Spang | Safety drilling-in head |
| US2306617A (en) * | 1940-10-08 | 1942-12-29 | Wade W Dick | Remote control-safety trip hydraulically operated oil saver |
| US2990166A (en) * | 1957-08-29 | 1961-06-27 | Myles A Walsh | Mining method |
| FR2243324B1 (en) * | 1973-09-08 | 1980-12-26 | Bergwerksverband Gmbh | |
| US4072015A (en) * | 1976-12-30 | 1978-02-07 | The United States Of America As Represented By The Secretary Of The Interior | Borehole aerostatic ground support system |
| US4716962A (en) * | 1985-11-29 | 1988-01-05 | Texaco Inc. | Stripping gland |
| GB2209568B (en) * | 1987-09-05 | 1991-10-23 | Phoenix Ag | Sealing profile for tunnel segments |
| US4813358A (en) * | 1988-05-31 | 1989-03-21 | Ireco Incorporated | Inflatable wand for loading a mining borehole |
-
1995
- 1995-04-27 US US08/429,555 patent/US5509477A/en not_active Expired - Fee Related
- 1995-08-01 CA CA002155139A patent/CA2155139A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US5509477A (en) | 1996-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |