CA901302A - Method and device for counter-stressing in situ rock for support of underground openings - Google Patents

Method and device for counter-stressing in situ rock for support of underground openings

Info

Publication number
CA901302A
CA901302A CA901302A CA901302DA CA901302A CA 901302 A CA901302 A CA 901302A CA 901302 A CA901302 A CA 901302A CA 901302D A CA901302D A CA 901302DA CA 901302 A CA901302 A CA 901302A
Authority
CA
Canada
Prior art keywords
stressing
counter
support
situ rock
underground openings
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
Application number
CA901302A
Inventor
M. Whiting Jerry
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.)
Atlantic Richfield Co
Original Assignee
Atlantic Richfield Co
Publication date
Application granted granted Critical
Publication of CA901302A publication Critical patent/CA901302A/en
Expired legal-status Critical Current

Links

CA901302A Method and device for counter-stressing in situ rock for support of underground openings Expired CA901302A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA901302T

Publications (1)

Publication Number Publication Date
CA901302A true CA901302A (en) 1972-05-30

Family

ID=36409247

Family Applications (1)

Application Number Title Priority Date Filing Date
CA901302A Expired CA901302A (en) Method and device for counter-stressing in situ rock for support of underground openings

Country Status (1)

Country Link
CA (1) CA901302A (en)

Similar Documents

Publication Publication Date Title
CA989726A (en) Methods and apparatus for testing earth formations
CA948898A (en) Method and apparatus for anchoring rock bolts
CA1008359A (en) Methods and apparatus for testing earth formations
CA989728A (en) Methods and apparatus for testing earth formations
CA977330A (en) Method and means for drilling
CA984165A (en) Method and means for installing load-bearing piles in situ
CA995657A (en) Earth drilling apparatus and method
CA974505A (en) Earth boring method and apparatus
CA985518A (en) Method and apparatus for installing concrete piles
CA984166A (en) Method and apparatus for installing anchors
CA988029A (en) Apparatus for testing earth formations
CA985497A (en) Method and device for breaking concrete structures
CA986739A (en) Method and apparatus for installing anchors
CA966938A (en) Method and apparatus for borehole logging
CA981036A (en) Method and apparatus for installing anchors
CA901302A (en) Method and device for counter-stressing in situ rock for support of underground openings
AU473747B2 (en) Rock fracturing method and apparatus for excavation
AU481733B2 (en) Methods and apparatus for testing earth formations
AU1909367A (en) Method of anchoring rock roofs and apparatus therefor
CA890829A (en) Apparatus for and method of expanding earth materials
CA902597A (en) Drilling apparatus and method
CA903844A (en) Methods and apparatus for investigating earth formations
AU467031B2 (en) Method and apparatus for anchoring rock bolts
CA896398A (en) Earth piercing apparatus and method
CA910062A (en) Method and means for stabilizing structural layer overlying earth materials in situ