Methods or apparatus for enlarging or restoring the cross-section of tunnels

Industry

CPC
E21D9/01

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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D9/00Tunnels or galleries, with or without linings Methods or apparatus for making thereof Layout of tunnels or galleries

Current Industry

E21D9/01Methods or apparatus for enlarging or restoring the cross-section of tunnels

Industries

Patents Grantslast 30 patents

Information Patent Grant
Support method of preset internal cable for in-situ tunnel expansio...
- Patent number 11,913,338
- Issue date Feb 27, 2024
- FUZHOU UNIVERSITY
- Xuezhen Wu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tunnel construction method using pre-support and post-support and a...
- Patent number 10,358,920
- Issue date Jul 23, 2019
- Dong-hyun Seo
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device for back soil disturbance in shield tunnel
- Patent number 10,156,139
- Issue date Dec 18, 2018
- POWERCHINA HUADONG ENGINEERING CORPORATION LIMITED
- Wenhua Chen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Auxiliary tunneling apparatus
- Patent number 9,617,853
- Issue date Apr 11, 2017
- Komatsu Ltd.
- Kazunari Kawai
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tunnel excavation method
- Patent number 9,388,690
- Issue date Jul 12, 2016
- Komatsu Ltd.
- Kazunari Kawai
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for widening road, superhighway or railway tunnels, without...
- Patent number 6,375,390
- Issue date Apr 23, 2002
- Pietro Lunardi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Ground levelling blade
- Patent number 5,718,295
- Issue date Feb 17, 1998
- Trahan International Ltd.
- Michel Trahan
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Method and apparatus for scaling mine roofs and ribs
- Patent number 5,407,252
- Issue date Apr 18, 1995
- Carey Salt Company, Inc.
- Huey P. Perero
- E21 - EARTH DRILLING MINING
Information Patent Grant
Process and apparatus for vibratory operation of a working piston,...
- Patent number 4,715,265
- Issue date Dec 29, 1987
- Graul; Achim
- Achim Graul
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information Patent Grant
Method for constructing an enlarged tunnel and apparatus for formin...
- Patent number 4,618,298
- Issue date Oct 21, 1986
- Mitsui Kensetsu Kabushiki Kaisha
- Shigeo Takamiya
- E21 - EARTH DRILLING MINING
Information Patent Grant
Flighting section and tooth holder
- Patent number 4,480,873
- Issue date Nov 6, 1984
- Winchester E. Latham
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hard rock trench cutting machine having anchoring and steering stru...
- Patent number 4,312,541
- Issue date Jan 26, 1982
- Jarva, Inc.
- Weslin Spurgeon
- E21 - EARTH DRILLING MINING
Information Patent Grant
Funneling machine with inclined advancing rams
- Patent number 4,113,316
- Issue date Sep 12, 1978
- Dobson Park Industries Limited
- Reginald Andrew Phillips
- E21 - EARTH DRILLING MINING
Information Patent Grant
Ground excavating apparatus
- Patent number 4,070,772
- Issue date Jan 31, 1978
- Kabushiki Kaisha Komatsu Seisakusho
- Mitsuteru Motomura
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Hard rock trench cutting machine
- Patent number 4,035,024
- Issue date Jul 12, 1977
- Jarva, Inc.
- Trevor Fink
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
3870369
- Patent number 3,870,369
- Issue date Mar 11, 1975
- E21 - EARTH DRILLING MINING
Information Patent Grant
3834762
- Patent number 3,834,762
- Issue date Sep 10, 1974
- E21 - EARTH DRILLING MINING
Information Patent Grant
3472555
- Patent number 3,472,555
- Issue date Oct 14, 1969
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
3103754
- Patent number 3,103,754
- Issue date Sep 17, 1963
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
2599042
- Patent number 2,599,042
- Issue date Jun 3, 1952
- E21 - EARTH DRILLING MINING
Information Patent Grant
2577924
- Patent number 2,577,924
- Issue date Dec 11, 1951
- E21 - EARTH DRILLING MINING
Information Patent Grant
1449075
- Patent number 1,449,075
- Issue date Mar 20, 1923
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
TUNNEL SURROUNDING ROCK SUPPORTING METHOD AND SYSTEM BASED ON TUNNE...
- Publication number 20220389815
- Publication date Dec 8, 2022
- CHINA RAILWAY TUNNEL GROUP CO., LTD.
- Kairong HONG
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
TUNNEL CONSTRUCTION METHOD USING PRE-SUPPORT AND POST-SUPPORT AND A...
- Publication number 20180252104
- Publication date Sep 6, 2018
- HYUN ENGINEERING AND CONSTRUCTION CO., LTD
- Dong-hyun SEO
- E21 - EARTH DRILLING MINING
Information Patent Application
DEVICE FOR BACK SOIL DISTURBANCE IN SHIELD TUNNEL
- Publication number 20170335687
- Publication date Nov 23, 2017
- POWERCHINA HUADONG ENGINEERING CORPORATION LIMITED
- Wenhua CHEN
- E21 - EARTH DRILLING MINING

Methods or apparatus for enlarging or restoring the cross-section of tunnels

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Support method of preset internal cable for in-situ tunnel expansio...

Tunnel construction method using pre-support and post-support and a...

Device for back soil disturbance in shield tunnel

Auxiliary tunneling apparatus

Tunnel excavation method

Method for widening road, superhighway or railway tunnels, without...

Ground levelling blade

Method and apparatus for scaling mine roofs and ribs

Process and apparatus for vibratory operation of a working piston,...

Method for constructing an enlarged tunnel and apparatus for formin...

Flighting section and tooth holder

Hard rock trench cutting machine having anchoring and steering stru...

Funneling machine with inclined advancing rams

Ground excavating apparatus

Hard rock trench cutting machine

3870369

3834762

3472555

3103754

2599042

2577924

1449075

Patents Applicationslast 30 patents

TUNNEL SURROUNDING ROCK SUPPORTING METHOD AND SYSTEM BASED ON TUNNE...

TUNNEL CONSTRUCTION METHOD USING PRE-SUPPORT AND POST-SUPPORT AND A...

DEVICE FOR BACK SOIL DISTURBANCE IN SHIELD TUNNEL