Longwall equipment development

Longwall equipment development

206A ma~c~ity of mines ra~girg from 1-12yd capacity. 2-yd loaders have become popular for applications where ground conditions dictate narrower entry...

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206A

ma~c~ity of mines ra~girg from 1-12yd capacity. 2-yd loaders have become popular for applications where ground conditions dictate narrower entry widths. Diesel-powered trucks provide high l~oductivity on intermediate length hauls. The hydraulic rockdrill, with its high average penetration rate, and hydraulic or pnemmatic impactors used as rock breaklng tools, are of great impertance for f u r z e und~ground mining.

2034 TREGEIg.ES, WOODLEY, JN High speed turs~l]ing. Symposl~m on Mining Methods, Harro~ate, 30-31 October ani i Nov. 1974. Abstract. MIN.ENGR.VI33, N164, JULY, 1974, P470. The future requirements of the coal i~dustry wil include the ability to drive h e a ~ s and ~ s , using emgimeerimg systems so devised that not only are strata excavated rapidly but also the roadway is supported at the same rate without e~cesaive marmal work. A new coal heading machine des~med by the National Coal Board's Minir~ Remecrch ar~ Development Establishment shows l~omlse for the future and its performance is e x ~ in the paper. For tunnels longer than 2000 m, the use of full face circular turs~llirg is beimg conslderedj but far rock tum~els aborter than 2000m, a machine h a s y e t t o be developed w i t h the f a c i l i t i e s of quick d i = - ~ l i n g , ~ a n s p o r t ar~ r e - e r e c t ioz. 203~ ANONYMOUS Record v~-~ical raise c~mple~l at Elliot Lake. a description of the driving of a vertical airway from a third of a mile tu~er~ro~xl without auxiliary or in1~rmedlate levels. MIN .MAG.VI30, NS, 1974, P373 •

2O40 BALDONADO, 0C ~,HF PATTISON, HC Interrelationship of irrsitu rock l~operties, e~eavation method amd m ~ k characteristics. Refs. HOLMES, NAEVER, INC .ANAHEIM, CALIF.FINAL TECHNICAL REPOMr, AD-764 977-5, JULY, 1973, 293P. 2041 WEEE~S, PG Lor~well equlpmer~ development. Symposium on Mining Methods, H a r r o ~ e , 30-31 October and 1 Nov. 1974. Abstract. MIN.E~3R .V133, N164, JULY, 19743 P472 • An outlir~ of the eqttil~ment projected for use in %he next decade is preserved.

2~ SANN, B UNIV.~,D Combination of all farces ar~ their effect on the efficiency and output of a coal plough. Part 5. In G~man. lOF,15R. GLirECKAUF-FORSCHURG ~ T ~:,V35, APRIL, 1974, I~8 "70 • There are two possibilities to utilize the forces tramsmitred by the emgine into %he c ~ n , reduction af the face lemgth and elimination of gliding friction. 2O43 MCINI~DSH,WM QUEENS UNIV. EI~SrON, CDN C ~ n t a t i o n of hydraulic backfill with maturally occurrir~ miz~ral s.F~s,Tabls,R~ s. MSC THESIS, QUEENS UNIV. CANADA,1973 .

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2036 ~COIT, R Drivage with the DOSCO Roa~header; Symposium on Mining Methods, Hsrrogate, 30-31 October and i Nov. i974.A~stract. MIN. ENSR.VI33, NI6~, JULY, 1974, P~70-471. The DOSCO Roadheader a~i the mc~Ificatio~= which have been made to the machine since its in%roduction to mining ir~ustry in 1967, is discussed.

2037 IRWIN, H Rapid drivages with co~tinucals ~ s . Symposlt~n on M/ning Me%hods,Harro~af, e,30-31 October and i Nov. 1974.Abstract. M~N. ENGR.VI33, NI6~, JULY, 1974, 470P. The paper describes the main types amd ~,w,l~rs of continuous miners which are u~ed in driva~es in South Durham. The al1~'native amcillary equipment available far use with mimers, izm.l~xLi~ mobile drlv~rs, mobile temslon ends, etc. is also ~ i ~ c u s ~ . S~me typical examples of drivages are incl~ed.

20~ LOUIS, C B.R.G.M.F PIRAUD, J B.R.G.M.F Procedures of t ~ n g execution using the new Austrian method ~ am~ other similar methods. Report. In French. 3F, LT,16R. A.F.T.E.S. W ~ GROUP ~ , M A Y , 1 9 7 4 , 2 0 P . Execution of a %nlmmel pro~ec~ comslsts af %he followlmg steps: i. Imfc~mation collected far geological reconmals~ce (prelimi~ry) ~ for co~dmcting ~ mental galleries; 2. Geological classification Of the tarrai~ 3. Results of ~ g e o ~ h r ~ m a l expe~lm~s; 4. Conclusions reached after Ferformir~ ms~hematlcal analyses on the s t r e ~ s of the rock ar~ the m.t~oc~e. Only after c~mgletion of the above mentior~d investigation, the execution im~Ol~ of %A~e im~o~ect can ~e uniertaken. It consists of: definition of the boltir~ system and its desig~ T e c h ~ q ~ s used in installation of the system; Actual operation of %he system.

~0~8 ~O~I~,A~ Psrameters of excavates f ~ siz~le-atroke spallation of frozen ~ . In Rus~ian.16R. STROE~L. ~ . N12,1973, P143-1h8.

2045 KONETZNY, H Extraction of a thick seam by shearer loader and with shield su~or~s. In Ge~,,~,~, Fi~s~Refs. GLUECKAUF, VIIO, NI2, 20 JU~, 197~, I~70"~76. The paper describes %he experience galr~d in the Karl seam at Victor-lckern Colliery. A dc~le erred machine was chosen for excavatioms on a dippl~ face. A plough was installed to clear a ps~h be%weem the comv~y~ ar~ the face. An accour~ of using the ~ e r i s a O~V shield supports, especially modified far the use in the thick seam, is given.

2039 ANONYMOUS Surface miming of coal.-Revlew of recent developments in the U.S.A. Types of excavators used in operatio-a.7F. MIN. CONGRESS J.V60, N2, i ~ , ~!0~'i13,121.

2o46 REDP~H, BB Project Trinidad.Exl~loslve excavation t e ~ s in sa~dsto-~ a ~ ~hale.~/~a,Refs. US A~4Y E~S.Wa~WAI,S E ~ F ~ . S ~ . C C R P S E~S.REPOR~. AD-762-174, JULY, 1972,107P.