GB1450560A - Tunnelling shields - Google Patents
Tunnelling shieldsInfo
- Publication number
- GB1450560A GB1450560A GB5854773A GB5854773A GB1450560A GB 1450560 A GB1450560 A GB 1450560A GB 5854773 A GB5854773 A GB 5854773A GB 5854773 A GB5854773 A GB 5854773A GB 1450560 A GB1450560 A GB 1450560A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- movement
- discharge zone
- tunnelling
- sweep
- 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
Links
- 230000003534 oscillatory effect Effects 0.000 abstract 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/0875—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
1450560 Tunnelling machines; tunnelling shields STELMO Ltd and J KIRKWOOD 3 March 1975 [18 Dec 1973] 58547/73 Heading E1F A sweep arm is mounted on the upper surface of a ramp 20 extending upwards and rearwards from the bottom of the leading end of a tunnelling shield so that it can be given an oscillatory motion over said surface to sweep spoil over the surface to a discharge zone to pass to a conveyer extending rearwards through the shield. Preferably the movement of the arm is such that it passes the discharge zone in each direction of its movement. The arm may, when seen in plan, be a sector of a circle pivoting about the axis of the circle and with an angular extent not greater than 280‹, preferably 150‹. However the arm may be a blade 23 pivotable through an arc of between 320‹ to 360‹ with the movement of the blade always terminating over the discharge zone. Cutting tools may be provided along the length of the arm. When the arm is a sector of a circle then a stationary blade may be located immediately above the path of movement of the arm to sweep it clear. The discharge zone may be a recess 21 in the rearward edge of the ramp and a chute may be provided to lead spoil from the recess to the conveyer. The oscillatory motion of the arm may be caused by a double acting hydraulic ram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5854773A GB1450560A (en) | 1973-12-18 | 1973-12-18 | Tunnelling shields |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5854773A GB1450560A (en) | 1973-12-18 | 1973-12-18 | Tunnelling shields |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1450560A true GB1450560A (en) | 1976-09-22 |
Family
ID=10481874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5854773A Expired GB1450560A (en) | 1973-12-18 | 1973-12-18 | Tunnelling shields |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1450560A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289356A (en) * | 1978-12-15 | 1981-09-15 | Coal Industry (Patents) Limited | Shield assemblies for installation in under-ground roadways and rock excavating machines including such shield assemblies |
| CN117868923A (en) * | 2024-03-07 | 2024-04-12 | 山西宏厦第一建设有限责任公司 | Advanced support equipment for coal mine underground roadway tunneling and support method thereof |
-
1973
- 1973-12-18 GB GB5854773A patent/GB1450560A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289356A (en) * | 1978-12-15 | 1981-09-15 | Coal Industry (Patents) Limited | Shield assemblies for installation in under-ground roadways and rock excavating machines including such shield assemblies |
| CN117868923A (en) * | 2024-03-07 | 2024-04-12 | 山西宏厦第一建设有限责任公司 | Advanced support equipment for coal mine underground roadway tunneling and support method thereof |
| CN117868923B (en) * | 2024-03-07 | 2024-05-14 | 山西宏厦第一建设有限责任公司 | Advanced support equipment for coal mine underground roadway tunneling and support method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |