PL116468B1 - Reinforcement for a combined excavation lining of reinforced concrete,in particular of sprayed concrete - Google Patents

Reinforcement for a combined excavation lining of reinforced concrete,in particular of sprayed concrete Download PDF

Info

Publication number
PL116468B1
PL116468B1 PL1978205736A PL20573678A PL116468B1 PL 116468 B1 PL116468 B1 PL 116468B1 PL 1978205736 A PL1978205736 A PL 1978205736A PL 20573678 A PL20573678 A PL 20573678A PL 116468 B1 PL116468 B1 PL 116468B1
Authority
PL
Poland
Prior art keywords
profile
shelf
reinforcement
lining
steel
Prior art date
Application number
PL1978205736A
Other languages
Polish (pl)
Other versions
PL205736A1 (en
Original Assignee
Bergwerksverband Gmbh
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 Bergwerksverband Gmbh filed Critical Bergwerksverband Gmbh
Publication of PL205736A1 publication Critical patent/PL205736A1/en
Publication of PL116468B1 publication Critical patent/PL116468B1/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • E21D11/107Reinforcing elements therefor; Holders for the reinforcing elements
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14Lining predominantly with metal
    • E21D11/15Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
    • E21D11/152Laggings made of grids or nettings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Piles And Underground Anchors (AREA)
  • Bridges Or Land Bridges (AREA)

Description

Przedmiotem wynalazku jest zbrojenie dla ze¬ spolonej obudowy wyrobiska ze zbrojonego betonu, zwlaszcza betonu natryskowego, które jest utwo¬ rzone z palaków obudowy rozmieszczonych w od¬ stepach i polaczonych ze zlaczami wtykowymi za pomoca nakladek i ze sciagów stalowych na sru¬ by sluzacych jako polaczenia pracujace na roz¬ ciaganie i sciskanie, oraz z okladzin.Znane sa palaki obudowy chodników, które sa polaczone miedzy soba stalowymi sciagajacymi" srubami, przykryte od strony górotworu okladzi¬ nami, z wypelnianiem pustej przestrzeni powstalej miedzy obudowa i górotworem betonem natrysko¬ wym, co lacznie stanowi zbrojona obudowe ze¬ spolona.Taka obudowa zespolona posiada bardzo duza nosnosc. Wada jej jednak jest bardzo czasochlon¬ ne i kosztowne umieszczenie pala'ków obudowy i okladzin, jak równiez nadmierne wymiary stali zbrojenia i ksztalt profilu nie przystosowany do przyjecia betonu, zwlaszcza w przypadku betonu natryskowego.Celem wynalazku jest opracowanie obudowy zespolonej, zwlaszczas przy uzyciu betonu natrys¬ kowego, która przy jednakowo duzej nosnosci po¬ zwala na szybsze i tansze wytwarzanie i zabudo¬ wanie, a jednoczesnie umozliwia zaoszczedzenie stali zbrojeniowej.Cel ten zostal osiagniety przez zbrojenie wedlug wynalazku, w którym palaki obudowy sa wyko- 10 15 20 25 30 nane z profilu, który sklada sie z pólki szerokiej i waskiej i którego srednik ma zgrubienie w po¬ blizu pólki szerokiej, tworzace wewnetrzna pólke waska, przy czym okladziny sa uksztaltowane ja¬ ko okladziny zaciskane, a sruby zaciskowe stano¬ wia stalowe sciagi.Przy zastosowaniu zbrojenia nowego rodzaju, zostaje zachowana glówna zaleta znanej obudowy zespolonej, mianowicie bardzo duza nosnosc, przy czym w zbrojeniu wedlug wynalazku uniknieto niekorzystnego przewymiarowania calej konstruk¬ cji. Profil nowego rodzaju posiada znacznie mniej¬ szy ciezar na metr biezacy od porównywalnych konwencjonalnych stalowych profilów obudowy.Dzieki korzystnemu uksztaltowaniu profilu no¬ wego rodzaju, uzyskuje sie niezbedne momenty wytrzymalosci Wx i Wy. Waska pólka górna przy¬ czynia sie do tego, ze zbrojenie jest szczególnie uzyteczne dla betonu natryskowego, gdyz pozwala na unikniecie cieni natryskowych. Dalsza istotna zaleta jest to, ze wskutek korzystnego ciezaru jed¬ nego metra profilu obudowy, jak tez dzieki spe¬ cjalnie dla tego ksztaltu profilu opracowanych srub zaciskowych i wciskanych okladzin, zostaje znacznie zmniejszony naklad pracy, czasu i kosz¬ tów niezbednych dla ustawienia palaków obudo¬ wy. Zalozenie podkladek, srub i zaciagniecie pa¬ laków obudowy nastepuje bez udzialu polaczen srubowych, bez drutu wiazacego, bez specjalnych narzedzi. 116 468118 4*8 Przedmiot wynalazku jest uwidoczniony w przy¬ kladzie wykonania na rysunku, na którym fig. 1 — przedstawia ksztalt profilu dla palaków obudo¬ wy, w przekroju, fig. 2 — dwie okladziny zacis¬ kane, przyporzadkowane profilowi/ w czesciowym przekroju, fig. 3 i 4 — srube zaciskowa przymo¬ cowana do profilu zaciskowego, w czesciowym przekroju i w widoku bocznym, fig. 5 i 6 — pare plytek umieszczonych na profilu za pomoca, po¬ laczenia wtykowego, w widoku bocznym i w prze¬ kroju, fig. 7 ^—. bydowe zespolona ze zbrojeniem skladajacym sie z palaków profilowych- srub zaciskowych, zaciskowych, zaciskanych okladzin i plytek z polaczeniem zaciskowym, w przekroju., Na figurze 1 przedstawiono profil 1, który sla- zy do zbudowania segmentów obudowy z palaków 20, 21 obudowy. Profil l sklada sie ze srodnika 10, waskiej pólki 11 i szerokiej pólki 12: Srodnite W profilu posiada zgrubienie w poblizu szerokiej pólki 12, które jest uksztaltowane jako waska pól¬ ka wewnetrzna 13. Korzystne jest takie uksztal¬ towanie waskiej .pólki 11 profilu, aby jej szero¬ kosc byla dwa razy mniejsza od szerokosci szero¬ kiej pólki 12* Korzystne takze, jest umieszczenie waskiej pólki wewnetrznej 13 w odleglosci okolo jednej trzeciej od szerokiej pólki 12. Wjrsokosfc srodnika 10 profilu jest tak dobrana, ze wynosi ona okolo trzy drugie do cztery trzecie szerokosci szerokiej pólki 12. Na fig. 1 os y profilu oznaczono przez y-y, zas os x oznaczono przez x-x,.Na figurze 2 przedstawiono dwie okladziny slu* zace jako okladziny zaciskane 3, skladajace sie/ z podluznych pretów 30 i poprzecznych pretów 31, spawanych punktowo. Prety podluzne 30 posiadaja nat obtt.swyicto koncach wykorbienia 32* które przy lfekkim docisnieciu zostaja^ wcisniete we wglebie¬ nia mieplzy. szeroka pólka 12 i waska pólka we¬ wnetrzna, 1& przez co zapobiega sie ich zsunieciu siejub wypadnieciu.Wprzypadku obudowy przy uzyciu betonu na¬ tryskowego, . okladzina zaciskana 3 tworzy nie¬ zbedne, zbrojenie skladajace sie z podluznych. pre¬ tów 30ii.poprzecznyeh pretów 31.Przy obudowie wypelnianej za obudowa, mie¬ dzy, podluznymi pretami 30 i poprzecznymi pre¬ tami. 31 jest przyspawana nie pokazana ha. rysun¬ ku, djfobnooczkowa plecionka druciana, tkanina druciana, lub innego rodzaju siatka stalowa lub folia ze--sztucznego, tworzywa, dla podtrzymywania materialu wypelniajacego. Wypelnianie za obudo¬ wa, moze. odbywac sie zarówno w kierunku pro- ihieniowym jak tez osiowym. W (plecionkowym materiale. drucianym, tkaninie drucianej i podob¬ nych* które* maja byc. przyspawane,. moze byc przewidziane okienko, dla napelniania, betonem, zrealizowane przez wykonanie odpowiedniej za¬ kladki z.tegoz materialu. A Na,, figurachi.3 i 4 przedstawiono srube zacis¬ kowa. 4,. skladajaca sie. z. profilowego preta ruro¬ wego 41, który na obu koncach ma* splaszczenia, 42, zaopatrzone w pazidrowe zagiecie 43 i do któ¬ rych sa przymocowane kliny wyoltyihe 44k Pazu- rowe zagiecie 4fr zahacza o waska pólke 11 profilu 5 1 i jednym uderzeniem mlotka w klin wychylny 44; który jest obrotowo przymocowany na kolku, da splaszczenia 42, zostaje spiete z waska pólka 11. Polaczenie to jest bardzo poreczne,, latwe i szybkie w realizacji. 10 Równiez plytka 5 przedstawiona^ na fig. 5 i 6, skladajaca sie z prasowanych czesci 50, 51 w ksztalcieU* dopasowanych do srodnika profilu i do pólek 11, 13, które, daja sie naprezac za pomoca okraglych srub 52, dzieki klinom 5B, moze byc za- 15 montowana przy uzyciu mlotka, jako jedynego narzedzia.Figura 7 przedstawia w przekroju'gotowa obu- difrwe, zespolona z betonu zbrojonego stala. Palaki 20, 21 obudowy z profilu 1 sa przytrzymywane za 20 pomeca zaciskowych srub 4 w takiej odleglosci od siebie, ze dociskane okladziny 3 moga byc sil¬ nie zacisniete. W zaleznosci od wymaganej nos¬ nosci; zbrojenie stalowe moze byc wypelniane od tylu lub moze byc natryskiwany beton. Zamiast 2i betonu konwencjonalnego, jako material wypel¬ niajacy moga sluzyc równiez inne materialy twardniejace, np. anhydryt. 30 Zastrzezenia patentowe 1. Zbrojenie dla zespolonej obudowy wyrobiska ze- zbrojonego betonu, zwlaszcza betonu natrysko¬ wego, które jest utworzone z palaków obudowy rozmieszczonych w odstepach i polaczonych ze zla- 35 czarni wtykowymi za pomoca nakladek i-ze scia¬ gów stalowych na sruby sluzacych jako polacze¬ nia pracujace na rozciaganie i sciskanie oraz z okladzin, znamienne tym; ze palaki obudowy (20? 21) sa wykonane z profilu (1); który sklada sie t: 40 pólki szerokiej (127 i pólki waskiej (11) i którego srodnik (10? posiada zgrubienie w poblizu pólki szerokiej (12),* które tworzy wewnetrzna waska pólke (13), przy czym okladzmy sa uksztaltowane jako okladziny zaciskane (3), a sruby zaciskowe 45 (4) stanowia stalowe sciagi. 2! Zbrojenie wedlug zastrz. 1 znamienne tym, z6 wysokosc' srodnika profilu (1) wynosi okolo * trzy drugie dó cztery trzecie szerokosci szerszej pólki (12). 50 3. Zbrojenie wedlug zastrz. 1 lub 2, znamienne tym, ze okladzina zaciskana (3y posiada prety po¬ dluzne (30), których konce sa zagiete i które sluza jako elementy zaciskowe i odleglosciowe. 4. Zbrojenie wedlug zastrz. 1, znamienne tym, ze 55 sruby zaciskowe (4)r skladaja sie z profilowych pretów rurowych (41), które na obu koncach po¬ siadaja splaszczenia (42) z pazurowymi zagieciami (43) na koncach, do których sa przymocowane wy- 60 chylne kliny (44).116 46&116 468 46 (1 FIG.3 13^ III F (i&afj l "pir6^ u^Ts FIG.4 -*/W -NH l PZGraf. Koszalin A-348 100 A-4 Cena 100 zl PL PL PL The subject of the invention is reinforcement for a combined excavation lining made of reinforced concrete, especially shotcrete, which is made of lining posts placed at intervals and connected to plug-in connectors by means of caps and of steel bolted ties serving as connections. working in tension and compression, and with linings. There are well-known piles of sidewalk linings, which are connected to each other with steel "tightening" screws, covered on the side of the rock mass with linings, with the empty space formed between the lining and the rock mass being filled with shotcrete, which in total constitutes a reinforced composite casing. Such a composite casing has a very high load-bearing capacity. However, its disadvantage is the very time-consuming and expensive placement of the casing posts and cladding, as well as the excessive dimensions of the reinforcement steel and the shape of the profile not adapted to receive concrete, especially in the case of shotcrete. The aim of the invention is to develop a composite casing, especially when using shotcrete, which, with the same high load-bearing capacity, allows for faster and cheaper production and construction, and at the same time saves reinforcing steel. This goal has been achieved. by reinforcement according to the invention, in which the casing posts are made of a profile that consists of a wide and narrow shelf and whose diameter has a thickening near the wide shelf, creating an internal narrow shelf, and the facings are shaped as clamping linings, and the clamping screws are steel ties. When using a new type of reinforcement, the main advantage of the known composite casing is retained, namely very high load-bearing capacity, while the reinforcement according to the invention avoids unfavorable overdimensioning of the entire structure. The new type of profile has a much lower weight per running meter than comparable conventional steel casing profiles. Thanks to the favorable shape of the new type of profile, the necessary strength moments Wx and Wy are achieved. The narrow upper ledge makes the reinforcement particularly suitable for shotcrete as it avoids spray shadows. A further significant advantage is that due to the favorable weight of one meter of the casing profile, as well as thanks to the clamping screws and press-in linings developed especially for this profile shape, the amount of work, time and costs necessary to set up the casing posts is significantly reduced. ¬ you The installation of washers, screws and tightening of the casing bars takes place without the use of screw connections, without binding wire, and without special tools. 116 468118 4*8 The subject of the invention is shown in an exemplary embodiment in the drawing, in which Fig. 1 shows the shape of the profile for the housing posts, in cross-section, Fig. 2 shows two clamped linings, assigned to the profile/partly cross-sectional view, FIGS. 3 and 4 - a clamping screw attached to the clamping profile, in partial cross-section and side view, FIGS. 5 and 6 - a pair of plates placed on the profile by means of a plug-in connection, side view and cross-sectional view , fig. 7 ^—. housing combined with reinforcement consisting of profile posts - clamping screws, clamping screws, clamping linings and plates with clamping connection, in cross-section. Figure 1 shows profile 1, which is used to build casing segments from casing posts 20, 21. Profile l consists of a web 10, a narrow flange 11 and a wide flange 12: Middle The profile has a thickening near the wide flange 12, which is shaped as a narrow internal flange 13. It is advantageous to shape the narrow flange 11 of the profile, so that its width is twice as small as the width of the wide flange 12. It is also advantageous to place the narrow internal flange 13 at a distance of about one third from the wide flange 12. The height of the profile web 10 is selected in such a way that it is approximately three second up to four thirds of the width of the wide flange 12. In Fig. 1, the y-axis of the profile is marked by y-y, and the x-axis is marked by x-x. Figure 2 shows two facings serving as clamped facings 3, consisting of longitudinal bars 30 and transverse 31 bars, spot welded. The longitudinal rods 30 have at the very ends of the cranks 32* which, when pressed lightly, are pressed into the recesses of the pulp. a wide shelf 12 and a narrow inner shelf 1&, which prevents them from sliding or falling out. In the case of the casing using shotcrete, . clamped cladding 3 creates the necessary reinforcement consisting of longitudinal rods 30 and transverse rods 31. In the case of a casing filled behind the casing, between, longitudinal rods 30 and transverse rods. 31 is welded, not shown ha. drawing, micro-mesh wire mesh, wire mesh, or other type of steel mesh or plastic foil to support the filling material. Filling the casing, maybe. take place both in the proximal and axial direction. In the woven wire material, wire fabric and the like which are to be welded, a window may be provided for filling with concrete, made by making an appropriate overlap from this material. 3 and 4 show a clamping screw 4, consisting of a profile tubular bar 41 which has flats 42 at both ends, provided with a straight bend 43 and to which long wedges 44k are attached. - the pink bend 4fr is hooked to the narrow shelf 11 of the 5 1 profile and, with one blow of a hammer, the tilting wedge 44, which is rotatably mounted on the pin, will give a flattening 42, is fastened to the narrow shelf 11. This connection is very handy, easy and quick to install implementation. 10 Also the plate 5 shown in Figs. 5 and 6, consisting of U-shaped pressed parts 50, 51* fitted to the profile web and to the shelves 11, 13, which can be tensioned by means of round screws 52 thanks to the wedges 5B, can be assembled using a hammer as the only tool. Figure 7 shows a cross-section of the finished casing, composed of reinforced concrete and steel. The posts 20, 21 of the housing made of profile 1 are held by 20 clamping screws 4 at such a distance from each other that the claddings 3 being pressed can be tightly clamped. Depending on the required load capacity; steel reinforcement can be back-filled or concrete can be sprayed. Instead of conventional concrete, other hardening materials, e.g. anhydrite, can also be used as the filling material. 30 Claims 1. Reinforcement for the combined lining of a working of reinforced concrete, especially shotcrete, which is formed from lining posts placed at intervals and connected to the plug-in joints by means of overlays and steel ties with bolts serving as tension and compression joints and linings, characterized by; that the housing posts (20-21) are made of a profile (1); which consists of: 40 a wide shelf (127) and a narrow shelf (11) and whose web (10? has a thickening near the wide shelf (12),* which creates an internal narrow shelf (13), with the facings being shaped as clamped facings (3), and the clamping screws 45 (4) are steel ties. 2! Reinforcement according to claim 1, characterized in that the height of the profile web (1) is approximately * three-seconds and four-thirds of the width of the wider shelf (12). 50 3 . Reinforcement according to claim 1 or 2, characterized in that the clamped cladding (3y) has longitudinal rods (30), the ends of which are bent and which serve as clamping and spacing elements. 4. Reinforcement according to claim 1, characterized in that that 55 the clamping screws (4)r consist of profile tubular rods (41) which have flats (42) at both ends with claw-like bends (43) at the ends to which pivoting wedges (44) are attached. .116 46&116 468 46 (1 FIG.3 13^ III F (i&afj l "pir6^ u^Ts FIG.4 -*/W -NH l PZGraf. Koszalin A-348 100 A-4 Price PLN 100 PL PL PL

Claims (4)

1.Zastrzezenia patentowe 1. 2.Zbrojenie dla zespolonej obudowy wyrobiska ze- zbrojonego betonu, zwlaszcza betonu natrysko¬ wego, które jest utworzone z palaków obudowy rozmieszczonych w odstepach i polaczonych ze zla- 35 czarni wtykowymi za pomoca nakladek i-ze scia¬ gów stalowych na sruby sluzacych jako polacze¬ nia pracujace na rozciaganie i sciskanie oraz z okladzin, znamienne tym; ze palaki obudowy (20? 21) sa wykonane z profilu (1); który sklada sie t: 40 pólki szerokiej (127 i pólki waskiej (11) i którego srodnik (10? posiada zgrubienie w poblizu pólki szerokiej (12),* które tworzy wewnetrzna waska pólke (13), przy czym okladzmy sa uksztaltowane jako okladziny zaciskane (3), a sruby zaciskowe 45 (4) stanowia stalowe sciagi.1. Patent claims 1. 2. Reinforcement for the combined lining of a working of reinforced concrete, especially shotcrete, which is formed from lining piles placed at intervals and connected to the plug-in joints by means of overlays and ties steel with bolts serving as tension and compression connections and with linings, characterized by; that the housing posts (20-21) are made of a profile (1); which consists of: 40 a wide shelf (127) and a narrow shelf (11) and whose web (10? has a thickening near the wide shelf (12),* which creates an internal narrow shelf (13), with the facings being shaped as clamped facings (3) and the clamping screws 45 (4) are steel ties. 2. ! Zbrojenie wedlug zastrz. 1 znamienne tym, z6 wysokosc' srodnika profilu (1) wynosi okolo * trzy drugie dó cztery trzecie szerokosci szerszej pólki (12). 503.2. ! Reinforcement according to claim 1, characterized in that z6 the height of the profile web (1) is approximately * three-seconds and four-thirds of the width of the wider shelf (12). 503. 3.Zbrojenie wedlug zastrz. 1 lub 2, znamienne tym, ze okladzina zaciskana (3y posiada prety po¬ dluzne (30), których konce sa zagiete i które sluza jako elementy zaciskowe i odleglosciowe.3. Reinforcement according to claims. 1 or 2, characterized in that the clamped cladding (3y) has longitudinal rods (30), the ends of which are bent and which serve as clamping and spacer elements. 4. Zbrojenie wedlug zastrz. 1, znamienne tym, ze 55 sruby zaciskowe (4)r skladaja sie z profilowych pretów rurowych (41), które na obu koncach po¬ siadaja splaszczenia (42) z pazurowymi zagieciami (43) na koncach, do których sa przymocowane wy- 60 chylne kliny (44).116 46&116 468 46 (1 FIG.3 13^ III F (i&afj l "pir6^ u^Ts FIG.4 -*/W -NH l PZGraf. Koszalin A-348 100 A-4 Cena 100 zl PL PL PL4. Reinforcement according to claims. 1, characterized in that the clamping screws (4)r consist of profile tubular rods (41) which have flats (42) at both ends with claw-like bends (43) at the ends to which they are attached. tilting wedges (44).116 46&116 468 46 (1 FIG.3 13^ III F (i&afj l "pir6^ u^Ts FIG.4 -*/W -NH l PZGraf. Koszalin A-348 100 A-4 Price 100 zl PL PL PL
PL1978205736A 1977-04-01 1978-03-31 Reinforcement for a combined excavation lining of reinforced concrete,in particular of sprayed concrete PL116468B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2714620A DE2714620C3 (en) 1977-04-01 1977-04-01 Reinforcement for a composite structure made of steel-reinforced concrete, especially shotcrete

Publications (2)

Publication Number Publication Date
PL205736A1 PL205736A1 (en) 1979-01-02
PL116468B1 true PL116468B1 (en) 1981-06-30

Family

ID=6005391

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1978205736A PL116468B1 (en) 1977-04-01 1978-03-31 Reinforcement for a combined excavation lining of reinforced concrete,in particular of sprayed concrete

Country Status (8)

Country Link
AT (1) AT352668B (en)
CH (1) CH628954A5 (en)
DE (1) DE2714620C3 (en)
FR (1) FR2385893A1 (en)
HU (1) HU178181B (en)
IT (1) IT1101947B (en)
PL (1) PL116468B1 (en)
ZA (1) ZA781471B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19620290C1 (en) * 1996-04-03 1997-06-26 Bochumer Eisen Heintzmann Profiled walling-member, of Y-section and of solid steel, for tunnels and mine galleries
FR2791074B1 (en) * 1999-03-19 2001-04-20 Desquenne & Giral METHOD, FORMWORK FRAME AND HANGER FOR REALIZING A SIDING
AU2012272514C1 (en) 2011-06-22 2015-07-23 Clipex IP Limited Post-forming method and apparatus
CN106930779B (en) * 2017-03-15 2019-07-30 河南理工大学 A kind of special-shaped canopy method for protecting support of the micro- arch of high-dipping three soft coal layer re-exploration laneway battered leg

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE657162C (en) * 1938-02-25 Neunkircher Eisenwerk A G Vorm Profile iron for arched stretch frames
DE484016C (en) * 1927-12-20 1929-10-08 Alfred Thiemann G M B H Iron cap for mining
GB412561A (en) * 1932-12-23 1934-06-25 Evan Walter Davies Improvements relating to arched roof supports for mines or the like
GB460844A (en) * 1935-06-04 1937-02-04 Hugh Fentiman Smithson Improved arch-girder support for use in mines
DE726422C (en) * 1936-07-22 1942-10-14 F W Moll Soehne Maschinenfabri Wide flange support for pit construction
FR880347A (en) * 1941-03-22 1943-03-23 Reischswerke Ag Fu R Erzbergba flexible mine shoring
GB605996A (en) * 1946-02-06 1948-08-04 David Lewis Jones Improvements in and relating to tie-rods for erecting mine arches and the like
FR1042014A (en) * 1950-09-11 1953-10-28 Westfalenhu Tte Dortmund A G Profiled iron for construction of mine galleries and its manufacturing process
FR1156340A (en) * 1955-08-29 1958-05-14 Bochumer Ges Fuer Grubenausbau Improvements made to pushbuttons for mine tunnel support frames
FR1210440A (en) * 1958-09-26 1960-03-08 Rech S Ind Et Scient Et Support frame
DE1160388B (en) * 1958-11-15 1964-01-02 Stahlausbau Ges Mit Beschraenk Bolting for the steel pit construction
DE2517652A1 (en) * 1975-04-22 1976-11-04 His Handels & Ind Mine roadway or heading support - overlaps with load acceptance bars and has segments as flange- adapted I beams
DE2608956A1 (en) * 1976-03-02 1977-09-08 Stahlausbau Gmbh Yielding arch support for mine roadways - has stay width tapered from flange end to rounded head end and adjoining overlapped segments

Also Published As

Publication number Publication date
DE2714620A1 (en) 1978-10-12
ZA781471B (en) 1979-03-28
ATA941177A (en) 1979-03-15
CH628954A5 (en) 1982-03-31
IT7847613A0 (en) 1978-01-12
PL205736A1 (en) 1979-01-02
AT352668B (en) 1979-10-10
DE2714620C3 (en) 1981-04-23
FR2385893A1 (en) 1978-10-27
IT1101947B (en) 1985-10-07
HU178181B (en) 1982-03-28
DE2714620B2 (en) 1979-06-28

Similar Documents

Publication Publication Date Title
PL116468B1 (en) Reinforcement for a combined excavation lining of reinforced concrete,in particular of sprayed concrete
EP0033820B1 (en) Tubbing, use of this tubbing and method of constructing it
DE2503014C3 (en) Wire mesh mat for routes in mining and tunnel construction
DE4104298C2 (en) Profile reinforcement mat
CH627808A5 (en) Prefabricated insulating facade element
AT411473B (en) FINISHED CONCRETE WALL SHUTTER ELEMENT SYSTEM WITH ONLY ONE SIDE SIDE
DE2516723A1 (en) Tunnel rock consolidation system - support mats with flanges bolted to rock round excavation and concreted in
EP0373308B1 (en) Tying means for concrete works below ground
CN216810433U (en) Light partition plate for door and window opening
DE1911445A1 (en) Prefabricated building element for concrete ceilings and concrete walls
DE2915588A1 (en) Mine or tunnel gallery lattice girder support lining - has peripherally aligned sheathing plates supported on girder linked holders
DE4105431C1 (en) Roof support for mine galleries of spaced arches - has end slab as integral part of lagging mat, whose fold forms slab proper
DE3232269C2 (en) Extension frame made of lattice girders
DE910721C (en) Ceiling composed of prefabricated reinforced concrete beams, in-situ concrete and fill stones
DE977416C (en) Composite manhole pipes
DE889064C (en) Construction with prefabricated panels
DE807224C (en) Reinforced concrete ribbed ceiling or the like.
IT8202503A1 (en) IMPROVEMENT OF ELASTIC STRUCTURE IN PREFABRICATED OCTAGONAL TUBULAR ELEMENTS, FOR CONTAINMENT AND SUPPORT WORKS
DE102005055514B4 (en) Method for reinforcing the shaft construction of manhole cover secured mining manholes and reinforced concrete expansion reinforcement
DE2946492A1 (en) Mine gallery support frame mat bolting system - has end screw holes in bolt mats gripping adjacent frames segments
KR920000956Y1 (en) Constructure connecting hollow pipes
DE803071C (en) Roof cladding or false ceiling made of rectangular concrete slabs
DE2852827A1 (en) Shuttering panel fixture on wall at ceiling end - comprises L=sectioned block with side cut=outs and paired grooves for shackle
DE912499C (en) Reinforced concrete rib slab without formwork
DE7627284U1 (en) ANCHORSTONE FOR STEEL DOORS IN THE MASONRY