GB2278379A - A mine pollution control unit - Google Patents
A mine pollution control unit Download PDFInfo
- Publication number
- GB2278379A GB2278379A GB9309250A GB9309250A GB2278379A GB 2278379 A GB2278379 A GB 2278379A GB 9309250 A GB9309250 A GB 9309250A GB 9309250 A GB9309250 A GB 9309250A GB 2278379 A GB2278379 A GB 2278379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mine
- control unit
- pollution control
- pump
- mine pollution
- 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.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 19
- 231100000719 pollutant Toxicity 0.000 claims abstract description 19
- 241000894006 Bacteria Species 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000013480 data collection Methods 0.000 claims abstract 2
- 238000005086 pumping Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B33/03—Well heads; Setting-up thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- 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
- E21F16/00—Drainage
-
- 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
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Soil Sciences (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
A mine pollution control unit for assisting the environment after mine closure has means for data collection and means for extracting pollutant, gas and water. The unit may be used to control water pressure in the mine and to inject water or bacteria/chemicals, the latter assisting pollution separation. <IMAGE>
Description
MINE POLLUTION CONTROL UNIT
This invention relates to a mine pollution control unit.
When mines are working it is necessary to continually pump out seepage water to prevent them from flooding.
This is done with a system of pipes, pumps and power supplies installed in the underground workings of the mine. The pumps are designed for large volume removal of seepage water and are not concerned with particular pollutant or gas removal.
When a mine is closed, the pumping system is of too large a capacity. Pumping equipment is uneconomic to keep pumping or to be removed to another place.
As a result when a mine is closed the pumps are stopped, the mine floods with water and the pumps and the switch gear are destroyed.
The mine is then sealed to prevent any further access.
In a few cases the existing pipework has been coupled to a collective manifold at the surface, but this only collects general mine water rising by natural pressure and it does not handle gas or heavy pollutants.
Accumulated water in abandoned mines can contain pollutants can become pressurised, convey pollutants to surrounding strata. Gas may also form in the mine shaft or at pockets in the workings.
In the majority of cases abandoned mines are closed and sealed, with no further access or means of controlling the mine environment or its effects.
According to the present invention there is provided a mine pollution control unit able to control the mine environment after closure, by extraction of mine pollutant, mine water, balance the mine water pressure and extract gas.
Also monitor the mine environment.
It comprises a conductor set and sealed into a concrete base, such as a mine shaft plug.
The conductor goes from the surface to just below the concrete plug so that it can collect any gas that accumulates below the plug and in the ground surrounding the mine shaft. On the top of the conductor is a tree of valves which allows the control, installation, or removal of downhole equipment.
Within the conductor is run a casing which goes from the tree down to a sump constructed at a low point in the mine, such as the bottom of the mine shaft. Heavy pollutants can flow by natural gravity into the sump.
The sump is filled with high permeable fine material that prevents large particles entering the riser pipe.
The bottom of the casing within the sump has perforations and a screen.
Above the sump the casing has perforations that allow the entry of normal mine water.
Within the casing is installed a mine water pumping tubular, which goes from the tree down to an effective pumping depth and within which can be installed a submerged pump.
Also installed within the casing is a pollutant tube, from the tree down to a low point in the sump, so that heavy polluted water can be pumped to the surface for collection and treatment.
Within the casing or pollutant tube is a power supply tube to a pump unit for pumping the pollutant to the surface.
Also installed in the casing is an instrument tube which allows the running of instruments for data recording, monitoring and control signals.
An auxiliary access point may be used for additional jetting, injection of water or bacteria/chemical injection equipment.
The tree on the top of the conductor has stop valves for each of the systems also access chambers that allow the handling of downhole equipment even when the unit is under pressure.
Data handling, power and control of the mine pollution control unit is from a control panel.
Facilities may be shared by more than one mine.
Operation and maintenance of the mine pollution control unit can be from either fixed equipment on the surface, or from mobile equipment.
For convenience and economy, the mine pollution control unit can be installed prior to the mine closure. Although it is possible to install it after closure.
The natural separation of pollutant in the mine may be assisted by the injection of bacteria using the mine pollution control unit.
An auxiliary connection point at the tree flange may be used for insertion of downhole tubes and equipment for bacteria/chemical injection and circulation.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which:
FIG 1 is a diagrammatic view of the mine pollution control unit.
FIG 2 is a diagrammatic view showing typical operational and maintenance equipment.
Referring to the drawings a vertical conductor tube 1 is installed and sealed in a concrete base/plug 2 and of length to collect gas from the cavity 3 under the base/plug 2. Gas is extracted via stop valve 4 and gas pipe 5.
A casing 6 is run through the conductor tube 1 down to a sump 7 at a low point in the mine. The casing 6 has screened perforations 8 at the sump level to allow the entry of heavy pollutants. At a higher point it has unscreened perforations 9 to allow the entry of general mine water.
The top of the casing 6 is closed with a suspension unit 10 with slips 11, 12, which take the weight of the downhole tubulars.
The tree assembly 13 has a flange, body and valve positions and forms the transition between the downhole and surface equipment.
The sump 7 collects heavy pollutant liquid. It is filled with high permeable material 14 to prevent large particles entering. A cover and screen 15 prevents loss of material 14 during recirculation.
A mine water pump tube 16 is run through the casing 4 down to a depth for effective pumping of general mine water with submerged pump 17.
A cage 18 allows extracted mine water to exit from the pump tube 16 through stop valve 19 and pipe 20.
A pollutant tube 21 is run through the casing from hanger slip 12 down to the sump 7. A suction screen 22 prevents large solids entering.
Jet nozzles 23 supplied with high pressure water from supply pipe 24 lift the heavy liquid pollutant and discharge it via pollutant tube 21, cage 25, stop valve 26 and pipe 27.
Closing valves 28, 29, 30 are large enough to allow cages, slips and tubulars to pass through. Formed blades in the valves close the riser tubes but allow them to accommodate equipment lines so that maintenance equipment 31 can be installed.
The pump 17 is suspended by cable from 32 and supplied with power by electric cable 33.
High pressure jet water is supplied by pipe 34 and valve 35.
Provision is made at the tree assembly 13 for an instrument access point 36 and an auxiliary access point 37 which may be used for an additional jet water system, injection of bacteria/chemicals or water injection.
At the surface gas is flared at 38 or stored at 39. Pollutant is treated at 40. General mine water is disposed at 41.
Electric power is supplied by generator or mains at 42 and used to power the submerged pump 17 via control unit 43, a gas extraction pump 44 and a high pressure water pump 45 for the supply ofjetting water.
Computer data is handled at 46, control of the system is from control panel.
Claims (12)
1. A mine pollution control unit which assists the mine environment after mine closure. The mine pollution control unit having facilities for data collection, extraction of pollutant gas, general mine water and the control of mine water pressure.
2. A mine pollution control unit as described in claim 1, wherein the unit is installed in a place other than a mine shaft.
3. A mine pollution control unit as described in claim 1 or claim 2 wherein the down hole tubes are run separately but constitute the same environmental controls.
4. A mine pollution control unit as described in claim 1 or claim 2 or claim 3 wherein the pump is a submerged electric type.
5. A mine pollution control unit as described in claim 1 or any preceding claim wherein the pump is a submerged hydraulic type.
6. A mine pollution control unit as described in claim 1 or any preceding claim wherein the pump is ajet type.
7. A mine pollution control unit as described in claim 1 or any preceding claim wherein the pump is a submerged pump with mechanical drive.
8. A mine pollution control unit as described in claim 1 or any preceding claim wherein the surface facilities are shared by more than one mine.
9. A mine pollution control unit as described in claim 1 or any preceding claim wherein the blow ground equipment is permanent and the above ground operating equipment is mobile so that it can visit one or more mines and operate on an occasional basis.
10. A mine pollution control unit as described in claim 1, or any preceding claim wherein the pumping of heavy concentrated pollutant assists the separation and environment.
11. A mine pollution control unit as described in claim 1 or any preceding claim wherein the separation of pollution within the mine is assisted by bacteria/chemical means introduced by the mine pollution control unit.
12. A mine pollution control unit substantially as described herein with reference to the drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9309250A GB2278379A (en) | 1993-05-05 | 1993-05-05 | A mine pollution control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9309250A GB2278379A (en) | 1993-05-05 | 1993-05-05 | A mine pollution control unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9309250D0 GB9309250D0 (en) | 1993-06-16 |
| GB2278379A true GB2278379A (en) | 1994-11-30 |
Family
ID=10734967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9309250A Withdrawn GB2278379A (en) | 1993-05-05 | 1993-05-05 | A mine pollution control unit |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2278379A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2285644A (en) * | 1993-12-08 | 1995-07-19 | Stanley Ball | A mine pollution control system |
| CN102042027A (en) * | 2010-11-10 | 2011-05-04 | 张子金 | Coal mine gas drilling drainage device |
| CN101699033B (en) * | 2009-10-27 | 2011-12-21 | 山西焦煤集团有限责任公司 | Device for pumping and draining water from downward hole of coal bed |
| CN101539028B (en) * | 2009-04-30 | 2011-12-28 | 中国矿业大学(北京) | Apparatus for preventing and controlling coal or rock dynamic disaster by high-pressure pulse water injection |
| CN102748072A (en) * | 2012-07-06 | 2012-10-24 | 樊跃辉 | Automatic slag and water discharging machine |
| CN103016055A (en) * | 2012-12-25 | 2013-04-03 | 淮南矿业(集团)有限责任公司 | Coal stratum high positive pressure gas-water separation automatic drainage pressure measuring device |
| CN103206243A (en) * | 2013-04-17 | 2013-07-17 | 淮南矿业(集团)有限责任公司 | Pressure hole drain |
| CN103867230A (en) * | 2014-03-25 | 2014-06-18 | 北京中矿天安信息科技有限公司 | Slag water drainage device for underground mine gas drainage pipeline and slag water drainage method utilizing slag water drainage device |
| CN104076789A (en) * | 2014-07-01 | 2014-10-01 | 太原理工大学 | Mine main drainage automatic control and remote monitoring system |
| CN109139092A (en) * | 2018-09-29 | 2019-01-04 | 山东华坤地质工程有限公司 | A kind of multi-purpose construction method in a hole for administering buried Coal Seam and Gas Disaster |
| EP3633142A4 (en) * | 2017-05-26 | 2021-03-24 | Cecep Ningxia New Energy Resources Joint Stock Co., Ltd. | Novel process for controlling downhole gas in abandoned mine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358561B (en) * | 2014-10-16 | 2016-10-12 | 山东科技大学 | Aqueous coal petrography descending drilling gas pressure observation system |
| CN107448233B (en) * | 2017-09-22 | 2023-05-16 | 淮南矿业(集团)有限责任公司 | Mine water damage eliminating system and method |
| CN112392532B (en) * | 2020-11-23 | 2022-07-12 | 重庆工程职业技术学院 | Underground gas ventilation device |
| CN115075866A (en) * | 2021-04-15 | 2022-09-20 | 重庆工程职业技术学院 | Gas-pumping ventilation process for mine |
-
1993
- 1993-05-05 GB GB9309250A patent/GB2278379A/en not_active Withdrawn
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2285644A (en) * | 1993-12-08 | 1995-07-19 | Stanley Ball | A mine pollution control system |
| CN101539028B (en) * | 2009-04-30 | 2011-12-28 | 中国矿业大学(北京) | Apparatus for preventing and controlling coal or rock dynamic disaster by high-pressure pulse water injection |
| CN101699033B (en) * | 2009-10-27 | 2011-12-21 | 山西焦煤集团有限责任公司 | Device for pumping and draining water from downward hole of coal bed |
| CN102042027A (en) * | 2010-11-10 | 2011-05-04 | 张子金 | Coal mine gas drilling drainage device |
| CN102042027B (en) * | 2010-11-10 | 2013-07-17 | 张子金 | Coal mine gas drilling drainage device |
| CN102748072A (en) * | 2012-07-06 | 2012-10-24 | 樊跃辉 | Automatic slag and water discharging machine |
| CN102748072B (en) * | 2012-07-06 | 2014-08-20 | 樊跃辉 | Automatic slag and water discharging machine |
| CN103016055B (en) * | 2012-12-25 | 2015-11-18 | 淮南矿业(集团)有限责任公司 | Coal petrography floor height positive pressure gas water is separated Auto-drainage pressure tester |
| CN103016055A (en) * | 2012-12-25 | 2013-04-03 | 淮南矿业(集团)有限责任公司 | Coal stratum high positive pressure gas-water separation automatic drainage pressure measuring device |
| CN103206243A (en) * | 2013-04-17 | 2013-07-17 | 淮南矿业(集团)有限责任公司 | Pressure hole drain |
| CN103867230A (en) * | 2014-03-25 | 2014-06-18 | 北京中矿天安信息科技有限公司 | Slag water drainage device for underground mine gas drainage pipeline and slag water drainage method utilizing slag water drainage device |
| CN103867230B (en) * | 2014-03-25 | 2016-01-20 | 北京中矿大地地球探测工程技术有限公司 | A kind of deslagging water device for gas drainage pipeline under mine and utilize the method for its deslagging water |
| CN104076789A (en) * | 2014-07-01 | 2014-10-01 | 太原理工大学 | Mine main drainage automatic control and remote monitoring system |
| EP3633142A4 (en) * | 2017-05-26 | 2021-03-24 | Cecep Ningxia New Energy Resources Joint Stock Co., Ltd. | Novel process for controlling downhole gas in abandoned mine |
| CN109139092A (en) * | 2018-09-29 | 2019-01-04 | 山东华坤地质工程有限公司 | A kind of multi-purpose construction method in a hole for administering buried Coal Seam and Gas Disaster |
| CN109139092B (en) * | 2018-09-29 | 2020-04-17 | 山东华坤地质工程有限公司 | One-hole multipurpose construction method for treating impact and gas disaster of deep-buried coal seam |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9309250D0 (en) | 1993-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |