E
SECTION E — FIXED CONSTRUCTIONS
  
EARTH OR ROCK DRILLING; MINING
 E21
EARTH OR ROCK DRILLING; MINING
 E21

Note(s)

In this class, the following term is used with the meaning indicated:

  • "drilling" covers boring and vice versa.

 E21D
SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K 17/00; cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F)  [2,6]
 E21D

Note(s)

  1. This subclass covers methods or apparatus for making or lining tunnels, galleries or large underground chambers, using underground mining methods only, i.e. not involving disturbance of the ground surface.  [6]
  2. This subclass does not cover underground spaces made by foundation engineering, i.e. involving disturbance of the ground surface, which are covered by subclass E02D.  [6]
 E21D
Subclass index
MAKING SHAFTS; LININGS THEREFOR 1/00, 3/00, 7/00; 5/00
MAKING TUNNELS OR GALLERIES; LININGS THEREFOR 9/00; 11/00
MAKING UNDERGROUND CHAMBERS; LININGS THEREFOR 13/00; 11/00
WORKING-FACE SUPPORTS OR COVERS 15/00, 17/00, 19/00, 21/00
SUPPORTS FOR STEP-BY-STEP MOVEMENT 23/00
SETTING ANCHORING BOLTS 20/00
 E21D 1/00 - 
E21D 7/00
Shafts
 E21D 1/00
Sinking shafts
 E21D 1/02
·  by hand
 E21D 1/03
·  mechanically (E21D 1/08 takes precedence)
 E21D 1/04
·  ·  with grabs
 E21D 1/06
·  ·  with shaft-boring cutters (drilling machines E21B)
 E21D 1/08
·  while moving the lining downwards
 E21D 1/10
·  Preparation of the ground
 E21D 1/12
·  ·  by freezing
 E21D 1/14
·  ·  ·  Freezing apparatus
 E21D 1/16
·  ·  by petrification (grouting anchoring-bolts E21D 20/02)
 E21D 3/00
Raising shafts, i.e. working upwards from the bottom
 E21D 5/00
Lining shafts; Linings therefor (E21D 11/00 takes precedence)  [3]
 E21D 5/01
·  using prefabricated lining lowered into a hole filled with liquid or viscous mass
 E21D 5/012
·  Use of fluid-tight or anti-friction material on outside of, or between, lining layers
 E21D 5/016
·  Bearer curbs
 E21D 5/02
·  with wood (E21D 5/01, E21D 5/012, E21D 5/016 take precedence)
 E21D 5/04
·  with brick, concrete, stone, or similar building materials (E21D 5/01, E21D 5/012, E21D 5/016 take precedence)
 E21D 5/06
·  with iron or steel (E21D 5/01, E21D 5/012, E21D 5/016 take precedence)
 E21D 5/08
·  ·  in the form of profiled parts
 E21D 5/10
·  ·  in the form of tubbing
 E21D 5/11
·  with combinations of different materials, e.g. wood, metal, concrete (E21D 5/01, E21D 5/012, E21D 5/016 take precedence)
 E21D 5/12
·  Accessories for making shaft linings, e.g. suspended cradles, shutterings
 E21D 7/00
Shaft equipment, e.g. timbering within the shaft
 E21D 7/02
·  Arrangement of guides for cages in shafts; Connection of guides for cages to shaft walls (guideways or guides for elevators B66B 7/02)
 E21D 9/00 - 
E21D 13/00
Tunnels; Galleries; Large underground chambers; Linings therefor (galleries protecting against falling rocks or avalanches E01F 7/04; pressure galleries, galleries specially adapted to house pressure water conduits E02B 9/06; sewers E03F)  [3,6]
 E21D 9/00
Tunnels or galleries, with or without linings; Methods or apparatus for making thereof (linings per se E21D 11/00); Layout of tunnels or galleries  [3]
 E21D 9/01
·  Methods or apparatus for enlarging or restoring the cross-section of tunnels, e.g. by restoring the floor to its original level  [7]
 E21D 9/02
·  Driving inclined tunnels or galleries  [3]
 E21D 9/04
·  Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for
 E21D 9/06
·  Making by using a driving shield  [2]
 E21D 9/08
·  ·  with additional boring or cutting means  [2]
 E21D 9/087
·  ·  ·  with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines  [7]
 E21D 9/093
·  ·  Control of the driving shield  [7]
 E21D 9/10
·  Making by using boring or cutting machines (E21D 9/08 takes precedence; similar machines for mining E21C 27/20; mining picks E21C 35/18)  [3]
 E21D 9/11
·  ·  with a rotary drilling-head cutting simultaneously the whole cross-section , i.e. full-face machines  [7]
 E21D 9/12
·  Devices for removing or hauling away excavated material or spoil; Working or loading platforms (underground transport E21F 13/00)  [2]
 E21D 9/13
·  ·  using hydraulic or pneumatic conveying means  [7]
 E21D 9/14
·  Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings  [3]
 E21D 11/00
Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling (E21D 15/00-E21D 23/00 take precedence; specially for shafts E21D 5/00; lining pressure water galleries, linings therefor E02B 9/06)  [2]
 E21D 11/02
·  Lining predominantly with wood  [2]
 E21D 11/03
·  ·  using timber-setting machines
 E21D 11/04
·  Lining with building materials (E21D 11/02, E21D 11/14 take precedence)  [2]
 E21D 11/05
·  ·  using compressible insertions
 E21D 11/06
·  ·  with bricks
 E21D 11/07
·  ·  ·  using brick-laying machines
 E21D 11/08
·  ·  with preformed concrete slabs
 E21D 11/10
·  ·  with concrete cast in situ; Shuttering or other equipment adapted therefor
 E21D 11/12
·  ·  Temporary supports for use during building; Accessories
 E21D 11/14
·  Lining predominantly with metal  [2]
 E21D 11/15
·  ·  Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members (insulation E21D 11/38)  [2]
 E21D 11/18
·  ·  Arch members
 E21D 11/20
·  ·  ·  Special cross-sections, e.g. corrugated
 E21D 11/22
·  ·  ·  Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
 E21D 11/24
·  ·  ·  Knuckle joints or links between arch members
 E21D 11/26
·  ·  ·  Shoes for connecting arch members to longitudinal struts
 E21D 11/28
·  ·  Longitudinal struts
 E21D 11/30
·  ·  Bases for lower arch members (for props E21D 15/54)
 E21D 11/34
·  ·  Joints between vertical props and horizontal top bars (end caps forming part of the props E21D 15/54)
 E21D 11/36
·  ·  Linings or supports specially shaped for tunnels or galleries of irregular cross-section  [2,3]
 E21D 11/38
·  Waterproofing (in general E02D 31/00); Heat insulating; Soundproofing; Electric insulating (for building constructions in general E04B 1/62)  [2]
 E21D 11/40
·  Devices or apparatus specially adapted for handling or placing units of linings for tunnels or galleries  [2]
 E21D 13/00
Large underground chambers; Methods or apparatus for making them (lining E21D 11/00)  [6]
 E21D 13/02
·  Methods
 E21D 13/04
·  Special equipment; Accessories
 E21D 15/00 - 
E21D 23/00
Working-face supports
 E21D 15/00
Props (in the building art E04G 25/00); Chocks
 E21D 15/02
·  Non-telescopic props
 E21D 15/04
·  ·  with wooden prop parts joined by double conical connectors
 E21D 15/06
·  ·  with parts joined by a lock, with or without slight axial adjustability
 E21D 15/08
·  ·  ·  with toggle joint connection
 E21D 15/10
·  ·  ·  with dog-clutch or pin-and-hole connection
 E21D 15/12
·  ·  ·  with locking devices located near head or foot
 E21D 15/14
·  Telescopic props (general means for fixing telescopic parts together F16B)
 E21D 15/15
·  ·  Means counteracting entry of dirt; Built-in cleaning devices
 E21D 15/16
·  ·  with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
 E21D 15/18
·  ·  ·  with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium upon excessive pressure
 E21D 15/20
·  ·  ·  with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like spaced apart at intervals
 E21D 15/22
·  ·  ·  with member, pin, cross-piece, or the like ruptured, sheared through, or permanently deformed upon excessive pressure
 E21D 15/24
·  ·  ·  with axial screw-and-nut, rack-and-worm, or like mechanism
 E21D 15/26
·  ·  ·  ·  with screw, worm, or the like not self-locking but normally prevented from rotation by friction members which slip upon excessive pressure
 E21D 15/28
·  ·  with parts held relatively to each other by friction or gripping, e.g. using wedges
 E21D 15/30
·  ·  ·  by means expanded or contracted by pressure applied through the medium of a fluid or quasi-fluid, e.g. rubber
 E21D 15/32
·  ·  ·  by a deformable collar
 E21D 15/34
·  ·  ·  by axially-moving balls, rollers, or the like
 E21D 15/36
·  ·  ·  by a tiltable collar surrounding one or both parts
 E21D 15/38
·  ·  ·  with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations
 E21D 15/40
·  ·  ·  Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted
 E21D 15/42
·  ·  ·  with special parts to influence the friction
 E21D 15/43
·  ·  ·  Details of wedges (friction linings or pads E21D 15/42)
 E21D 15/44
·  ·  Hydraulic, pneumatic, or hydraulic-pneumatic props
 E21D 15/45
·  ·  ·  having closed fluid system, e.g. with built-in pumps or accumulators
 E21D 15/46
·  ·  with load-measuring devices; with alarm devices
 E21D 15/48
·  Chocks or the like
 E21D 15/50
·  Component parts or details of props (E21D 15/43, E21D 15/58, E21D 15/60 take precedence)
 E21D 15/502
·  ·  Prop bodies characterised by their shape, e.g. of specified cross-section
 E21D 15/51
·  ·  specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
 E21D 15/52
·  ·  Extensible units located above or below standard props
 E21D 15/54
·  ·  Details of the ends of props (for permitting step-by-step movement E21D 23/06)
 E21D 15/55
·  ·  ·  of prop heads
 E21D 15/56
·  ·  Details of locks of telescopic props
 E21D 15/58
·  Devices for setting props
 E21D 15/582
·  ·  for mechanical props
 E21D 15/59
·  ·  for hydraulic, pneumatic, or hydraulic-pneumatic props
 E21D 15/60
·  Devices for withdrawing props or chocks
 E21D 17/00
Caps for supporting mine roofs
 E21D 17/01
·  characterised by the shape of the cap, e.g. of specified cross-section
 E21D 17/02
·  Cantilever extension or similar protecting devices
 E21D 17/022
·  ·  Auxiliary devices for temporary support of roof-supporting beams whilst assembling
 E21D 17/03
·  ·  Brackets for roof-supporting bars
 E21D 17/04
·  ·  for use in longwall working
 E21D 17/05
·  ·  ·  hydraulically extensible
 E21D 17/054
·  ·  ·  hydraulically pivotable
 E21D 17/06
·  ·  for use in drifting galleries
 E21D 17/08
·  ·  Cap joints for obtaining a coal-face free of pit-props
 E21D 17/082
·  ·  ·  of sliding type
 E21D 17/086
·  ·  ·  of articulated type
 E21D 17/10
·  Details of mine caps for engaging the tops of pit-props, with or without retaining-plates; Retaining-plates
 E21D 19/00
Provisional protective covers for working space (E21D 9/06, E21D 23/00 take precedence)  [3]
 E21D 19/02
·  for use in longwall working
 E21D 19/04
·  for use in drifting galleries
 E21D 19/06
·  Arrangements for applying the covers  [6]
 E21D 20/00
Setting anchoring-bolts (anchoring bolts for shafts, tunnels or galleries E21D 21/00; means for anchoring structural elements or bulkheads specially adapted to foundation engineering E02D 5/74; dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose F16B 13/00)  [5]
 E21D 20/02
·  with provisions for grouting
 E21D 21/00
Anchoring-bolts for roof, floor, or shaft-lining protection (dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose F16B 13/00)  [5]
 E21D 21/02
·  having means for indicating tension (screwed connections specially modified for indicating tensile load F16B 31/02)
 E21D 23/00
Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyers, mining machines, or guides therefor (shifting of mine conveyers at the working face, per se E21F 13/08)
 E21D 23/03
·  having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support  [4]
 E21D 23/04
·  Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor (E21D 23/14 takes precedence)
 E21D 23/06
·  ·  Special mine caps or special tops of pit-props for permitting step-by-step movement
 E21D 23/08
·  Advancing mechanisms (E21D 23/16 takes precedence)
 E21D 23/10
·  ·  with advancing devices separate from the supporting construction
 E21D 23/12
·  Control, e.g. using remote control (E21D 23/16 takes precedence)
 E21D 23/14
·  ·  Effecting automatic sequential movement of supports, e.g. one behind the other
 E21D 23/16
·  Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
 E21D 23/18
·  ·  of advancing mechanisms
 E21D 23/20
·  ·  ·  for sequential movement, e.g. one behind the other
 E21D 23/22
·  ·  ·  incorporated in mine caps
 E21D 23/24
·  ·  ·  the advancing mechanisms being separate from the supporting construction
 E21D 23/26
·  ·  Hydraulic or pneumatic control