GB2252776B - Formation of a cavity in ground - Google Patents

Formation of a cavity in ground

Info

Publication number
GB2252776B
GB2252776B GB9103085A GB9103085A GB2252776B GB 2252776 B GB2252776 B GB 2252776B GB 9103085 A GB9103085 A GB 9103085A GB 9103085 A GB9103085 A GB 9103085A GB 2252776 B GB2252776 B GB 2252776B
Authority
GB
United Kingdom
Prior art keywords
cavity
ground
formation
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.)
Expired - Fee Related
Application number
GB9103085A
Other versions
GB2252776A (en
GB9103085D0 (en
Inventor
Adrian Sydney Parkes
Brian Thomas Sales
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.)
British Gas PLC
Original Assignee
British Gas PLC
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 British Gas PLC filed Critical British Gas PLC
Priority to GB9103085A priority Critical patent/GB2252776B/en
Publication of GB9103085D0 publication Critical patent/GB9103085D0/en
Publication of GB2252776A publication Critical patent/GB2252776A/en
Application granted granted Critical
Publication of GB2252776B publication Critical patent/GB2252776B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9206—Digging devices using blowing effect only, like jets or propellers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)
GB9103085A 1991-02-14 1991-02-14 Formation of a cavity in ground Expired - Fee Related GB2252776B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9103085A GB2252776B (en) 1991-02-14 1991-02-14 Formation of a cavity in ground

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9103085A GB2252776B (en) 1991-02-14 1991-02-14 Formation of a cavity in ground

Publications (3)

Publication Number Publication Date
GB9103085D0 GB9103085D0 (en) 1991-04-03
GB2252776A GB2252776A (en) 1992-08-19
GB2252776B true GB2252776B (en) 1995-04-12

Family

ID=10689996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9103085A Expired - Fee Related GB2252776B (en) 1991-02-14 1991-02-14 Formation of a cavity in ground

Country Status (1)

Country Link
GB (1) GB2252776B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2363407A (en) * 2000-06-12 2001-12-19 Frank Mohn Flatoey As Trenching apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926003A (en) * 1971-08-27 1975-12-16 Robert M Norman Bouyancy and attitude correction method and apparatus
GB2016560A (en) * 1978-03-13 1979-09-26 Hughes & Co Method of and apparatus for cutting channels
US4240664A (en) * 1978-09-08 1980-12-23 Joy Manufacturing Company Hydraulic jet cutting tool and method
GB2095722A (en) * 1981-03-31 1982-10-06 Univ Exeter The Forming an erosive jet
EP0251660A1 (en) * 1986-06-23 1988-01-07 Air Technologies Inc. Method and apparatus for soil excavation and the like
GB2194810A (en) * 1986-09-04 1988-03-16 G Sojuzny Z Mekh I Khim Ochist Hydraulic pulse generator
US4991321A (en) * 1990-06-21 1991-02-12 M-B-W Inc. Pneumatic device for excavating and removing material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926003A (en) * 1971-08-27 1975-12-16 Robert M Norman Bouyancy and attitude correction method and apparatus
GB2016560A (en) * 1978-03-13 1979-09-26 Hughes & Co Method of and apparatus for cutting channels
US4240664A (en) * 1978-09-08 1980-12-23 Joy Manufacturing Company Hydraulic jet cutting tool and method
GB2095722A (en) * 1981-03-31 1982-10-06 Univ Exeter The Forming an erosive jet
EP0251660A1 (en) * 1986-06-23 1988-01-07 Air Technologies Inc. Method and apparatus for soil excavation and the like
GB2194810A (en) * 1986-09-04 1988-03-16 G Sojuzny Z Mekh I Khim Ochist Hydraulic pulse generator
US4991321A (en) * 1990-06-21 1991-02-12 M-B-W Inc. Pneumatic device for excavating and removing material

Also Published As

Publication number Publication date
GB2252776A (en) 1992-08-19
GB9103085D0 (en) 1991-04-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee