| Body material : | Aluminum Alloy+PC cover |
| Power supply: | The solar panel(Monocrystalline 2.5V /120MA) |
| Battery: | Lithium battery 1000MAH*3.2V |
| LED: | Ultra-bright diameter 5mm*6PCS |
| LED Color: | White Green Red Yellow Blue |
| Flashing model: | flashing or constant |
| Working hours: | 140 hrs for flashing modes,40hrs for constant modes |
| Visual distance: | 1000m(approx) |
| Waterproof: | IP68 |
| Load capacity | >30T(can be installed in the middle of the road) |
| Size: | Ф123*45mm |
| Weight： | 30kgs/ctn,30pcs/ctn |
| Life span: | more than 5 years |
| Working Temperature | -20 °C~ + 70°C |
| waterproof | IP68 |
and tunnel supports likely to be applied, considering, e.g. excavation advance and face support (types and number of anchors, shotcrete strength, closure length, etc. ). • The program for the in-situ monitoring of the tunnel by field measurements. • The analysis of
Unmanned aerial system nadir reflectance and MODIS nadir BRDF-adjusted surface reflectances intercompared over Greenland. NASA Astrophysics Data System (ADS) Faulkner Burkhart, Jo
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Assume tunnel diameter(B) as 2.5 m Rock density 25 kN/m 3. Hp = 0.5 x 2.5 x 25 = 31.25 kN/m 2. This load can be applied to the tunnel as a gravity load. Finite element analysis or equations given in codes for different shapes of tunnels can be used to find the stresses of the tunnel.
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Oct 22, 2021 · Our planet, along with the rest of the solar system and some nearby stars, may be trapped inside a giant magnetic tunnel — and astronomers don't know why. A tube of vast magnetized tendrils
final, typically cast-in-place concrete lining as addressed in Chapter 10 Tunnel Lining. An instrumental element of SEM tunneling is the monitoring of deformations of tunnel and surrounding ground (Chapter 15). Evaluation of monitoring allows for the verification of design assumptions or adjustment of the tunneling process.
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tunnel profile is shallow and the excavation from the surface is possible, economical, and acceptable. Cut and cover construction is used for underpasses, the approach sections to mined tunnels and for tunnels in flat terrain or where it is advantageous to construct the tunnel at a shallow depth. Two types of
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These are rock tunnel, shield tunnel, cut and cover tunnel. These construction methods are closely related to tunnel location conditions. For this reason, there is a tendency that the rock tunnel is selected for tunnels constructed in mountainous areas, and the shield tunnel or cut
