DE3537086A1 - Underwater brown coal mining plant - uses treatment at cutting point to prevent humin separation, and forms underwater embankment from separated soil - Google Patents

Underwater brown coal mining plant - uses treatment at cutting point to prevent humin separation, and forms underwater embankment from separated soil

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Publication number
DE3537086A1
DE3537086A1 DE19853537086 DE3537086A DE3537086A1 DE 3537086 A1 DE3537086 A1 DE 3537086A1 DE 19853537086 DE19853537086 DE 19853537086 DE 3537086 A DE3537086 A DE 3537086A DE 3537086 A1 DE3537086 A1 DE 3537086A1
Authority
DE
Germany
Prior art keywords
underwater
brown coal
humin
water
separation
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Withdrawn
Application number
DE19853537086
Other languages
German (de)
Inventor
Hans-Georg Prof Dr Ing Schultz
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19853537086 priority Critical patent/DE3537086A1/en
Publication of DE3537086A1 publication Critical patent/DE3537086A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/26Methods of surface mining; Layouts therefor
    • E21C41/28Methods of surface mining; Layouts therefor for brown or hard coal
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C50/00Obtaining minerals from underwater, not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

The cutting head is supported so that the exposed edges of underwater seams are cut, and the cut material mixed with water is pumped through vertical pipes to floating platforms. The sediment containing water is separated from the brown coal and the latter is conveyed to a collection point using e.g. pontoons. At the cutting point, the seam is treated to prevent separation of humin. Chalk can be mixed with the cut material as part of the treatment, causing it to flocculate, and the edges of the seams are sprayed with plastics or concrete. Separated solid material is deposited so as to form a sloping underwater embankment. USE/ADVANTAGE - Efficient extraction of brown coal is combined with min. environmetal damage.

Description

Die Erfindung betrifft den Ersatz der aus trockener Grube im Tagebau betriebenen Braunkohlegewinnung durch ein Ge­ winnungsverfahren unter Wasser.The invention relates to the replacement of the dry pit Open-cast lignite mining by ge recovery process under water.

Es ist bekannt, daß die Braunkohle durch Abpumpen des Grund­ wassers im Tagebau aus trockener Grube erfolgt. Pro gewonnene Tonne Braunkohle müssen bis zu 10 Tonnen Grundwasser abge­ pumpt werden. Es ist vorgeschlagen worden, die Braunkohle mit Förderverfahren der Meerestechnik zu gewinnen, ein technisch realisierbares Gewinnungsverfahren unter Wasser ist jedoch nicht bekannt.It is known that the brown coal by pumping out the bottom water in the open pit from a dry pit. Per won Tons of brown coal have to dump up to 10 tons of groundwater be pumped. It has been suggested using lignite Funding procedures of marine engineering to win a technical However, the extraction process under water is feasible not known.

Einem Unterwasserabbau von Braunkohle stand bisher entgegen, daß der unter Wasser zu verkippende Abraum Schlamm wird, kei­ nen Böschungswinkel bildet und der Restsee aus Schlamm sich nur über Generationen verfestigt. Ihm stand weiterhin entgegen, daß die Braunkohle unter Wasser Huminstoffe absondert, die sich mit dem Wasser verbinden und das Grundwasser verseuchen.So far, there has been an underwater mining of brown coal, that the overburden to be dumped under water becomes sludge A slope angle forms and the remaining lake is made of mud only solidified over generations. He continued to oppose that the lignite secretes humic substances under water, which are connect with the water and contaminate the groundwater.

Der Erfindung liegt die Aufgabe zugrunde, durch ein spezielles Unterwasser-Verkippungsverfahren den Abraum unter Wasser fest zu lagern, so daß er große Böschungswinkel einnimmt und nicht verschlammt, und durch ein spezielles Abbauverfahren die abge­ sonderten Huminstoffe bindet.The invention has for its object by a special Underwater tilting method firmly traps the overburden under water to store so that it takes large embankment angles and not muddy, and the abge through a special degradation process secreted humic substances binds.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß auf der Abbauseite das den Gewinnungskopf (1) umgebende Wasser abge­ saugt, über ein die Huminstoffe bindendes Mittel (z. B. Kalk) geleitet wird, das die Huminstoffe zur Ausflockung bringt, die dann weiterhin verarbeitet werden können. Die freien Braun­ kohleflözkanten (15) werden durch Übersprühung mit einem Sperr­ mittel (z. B. Kunststoff, Beton) gegen die Absonderung von Hu­ minstoffen gesichert. This object is achieved in that on the mining side, the water surrounding the extraction head ( 1 ) sucks off, is passed over a binding agent (z can. The free brown coal seam edges ( 15 ) are secured by spraying with a blocking agent (e.g. plastic, concrete) against the segregation of minerals.

Das gewonnene Kohle-Wasser-Gemisch wird in (7) entwässert.The coal-water mixture obtained is dewatered in ( 7 ).

Das geförderte Abraum-Wasser-Gemisch wird in eine Wasserab­ scheideanlage (Separierungsanlage) (9) geleitet, von der der Abraum zur Unterwasserkippe (10) gelangt, in der er verfestigt wird und mit einer Böschungswinkelstütze verkippt wird.The extracted overburden-water mixture is passed into a water separating system (separation system) ( 9 ), from which the overburden reaches the underwater dump ( 10 ), in which it is solidified and tilted with a slope angle support.

Das in (9) separierte Wasser wird entweder durch Rohrlei­ tungen abgepumpt oder in hängenden Silos unter (9) zur wei­ teren Sedimentierung gelagert.The water separated in ( 9 ) is either pumped out through pipelines or stored in hanging silos under ( 9 ) for further sedimentation.

Die mit dieser Erfindung erzielten Vorteile liegen darin, daß in der Braunkohlengewinnung das Grundwasser der Region nicht mehr abgepumpt zu werden braucht und Abraumhalden für die Lage­ rung des Abraums nicht mehr erforderlich sind. The advantages achieved with this invention are that the region's groundwater is not in lignite mining more needs to be pumped out and tailings for the location overburden are no longer required.  

Fig. 1: Unterwasser-Braunkohlegewinnung Fig. 1: Underwater lignite extraction

  • - mit Gewinnungskopf (1), Steigleitung des Abbau- Wassergemisches (2) zur schwimmenden Plattform (3) mit Pumpstation,Vorentwässerung und Übergabe zur Kraftwerksseite (8) bzw. zur Verkippungsseite (10)- With extraction head ( 1 ), riser of the mining water mixture ( 2 ) to the floating platform ( 3 ) with pumping station, pre-drainage and transfer to the power plant side ( 8 ) or to the tilting side ( 10 )
  • - mit auf Pontons (5) gelagertem Horizontaltransport (4) des Kohle-Wassergemisches zur Entwässerungsstation (7), von der das Wasser zurück in die Grube und die Kohle ins Kraftwerk (8) geleitet wird,- With horizontal transport ( 4 ) of the coal-water mixture stored on pontoons ( 5 ) to the dewatering station ( 7 ), from which the water is fed back into the pit and the coal into the power plant ( 8 ),
  • - mit auf Pontons gelagertem Horizontaltransport (4) des Abraum-Wassergemisches in die Separierungsanlage (9), von der das separierte Wasser über Rohrleitungen abgepumpt oder in unter (9) hängenden Silos zur weiteren Sedimentierung gelagert wird, und der Abraum zur Unter­ wasserkippe (10) geleitet wird, wo er mittels Druckrohr und Böschungswinkelstützplatte verfestigt verkippt wird.- With horizontal transport ( 4 ) of the overburden-water mixture stored on pontoons into the separation system ( 9 ), from which the separated water is pumped out via pipes or stored in silos hanging under ( 9 ) for further sedimentation, and the overburden to the underwater dump ( 10 ) is directed where it is solidified by means of a pressure pipe and slope angle support plate.

Claims (1)

Unterwasser-Braunkohlegewinnungsverfahren dadurch gekennzeichnet, daß auf der Abbauseite unter Wasser die Braunkohle gegen die Absonderung von Huminstoffen ge­ sichert wird und auf der Verkippungsseite durch Separierung von Abraum und Abraumwasser der Abraum verfestigt verkippt bzw. in wasserdichten Containern unter Wasser gelagert wird, so daß große Böschungswinkel möglich werden.Underwater lignite extraction process characterized in that the lignite is secured against the secretion of humic substances on the mining side under water and on the tipping side by separating overburden and overburden water the overburden is solidified, tipped or stored in watertight containers under water, so that large embankment angles become possible.
DE19853537086 1985-10-18 1985-10-18 Underwater brown coal mining plant - uses treatment at cutting point to prevent humin separation, and forms underwater embankment from separated soil Withdrawn DE3537086A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853537086 DE3537086A1 (en) 1985-10-18 1985-10-18 Underwater brown coal mining plant - uses treatment at cutting point to prevent humin separation, and forms underwater embankment from separated soil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853537086 DE3537086A1 (en) 1985-10-18 1985-10-18 Underwater brown coal mining plant - uses treatment at cutting point to prevent humin separation, and forms underwater embankment from separated soil

Publications (1)

Publication Number Publication Date
DE3537086A1 true DE3537086A1 (en) 1987-04-30

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ID=6283844

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853537086 Withdrawn DE3537086A1 (en) 1985-10-18 1985-10-18 Underwater brown coal mining plant - uses treatment at cutting point to prevent humin separation, and forms underwater embankment from separated soil

Country Status (1)

Country Link
DE (1) DE3537086A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009079686A1 (en) * 2007-12-21 2009-07-02 National Power Australia Investments Limited Method for producing a lignite product
CN102900440A (en) * 2011-12-28 2013-01-30 龙口矿业集团有限公司 Undersea fully mechanized top coal caving mining method
CN104806245A (en) * 2015-03-02 2015-07-29 河南理工大学 Protecting method for long-wall strip type coordinated skip-mining under earth and rockfill dams

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009079686A1 (en) * 2007-12-21 2009-07-02 National Power Australia Investments Limited Method for producing a lignite product
AU2008341004B2 (en) * 2007-12-21 2012-11-15 Australian Power Partners Bv Method for producing a lignite product
CN102900440A (en) * 2011-12-28 2013-01-30 龙口矿业集团有限公司 Undersea fully mechanized top coal caving mining method
CN102900440B (en) * 2011-12-28 2015-11-25 龙口矿业集团有限公司 Lower comprehensive taking and placing top, sea coal-mining method
CN104806245A (en) * 2015-03-02 2015-07-29 河南理工大学 Protecting method for long-wall strip type coordinated skip-mining under earth and rockfill dams
CN104806245B (en) * 2015-03-02 2017-03-22 河南理工大学 Protecting method for long-wall strip type coordinated skip-mining under earth and rockfill dams

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