Ancient underground structures
Trench with the help of special equipment: excavators, various kinds of things for tractors; over short distances using manual force; trenchless technology for laying in horizontal drilling (abbr. HDD); collector.…

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The Gothic quarter in Barcelona. What to see?
The Gothic quarter is a district of Barcelona, home to magnificent medieval buildings, there are several major monuments. The history of the Gothic quarter is rooted in the very ancient…

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underground

The great structures

This publication is dedicated to the Great constructions of the USSR and Russia, those buildings are one of its existences prove the power and might of our own country want to meet. THE GREAT STRUCTURES

At the bottom of each building is a link to all the pictures in the archive!

Well it because we all live in Primorye we should all know about Voroshilov Battery on Russky island that is why she is entrusted with a great honor to open a Hit Parade of GREAT FACILITIES

Voroshilov battery on the island of Russian

In the reform of the Armed Forces of the Russian Federation in 1997 battery, as a combat unit was disbanded, and on its basis was established branch of the Military historical Museum of Pacific fleet “Voroshilov battery”.

In the spring of 1931 it was decided — to strengthen the defences of Vladivostok. The Commission headed by the people’s Commissar of defense K. Voroshilov chose for the new “springboard” island height near the Eastern corner of the Bay Novik. Continue reading

The soil pressure on underground structures

Prior to production and to the construction of underground structures soil in an unlimited array is in a state of natural or geostatic equilibrium under the action of its own weight. In this case, the depth Z in the soil (Fig. 1), the following compressive stresses (pressure):

vertical

horizontal

where is the average bulk weight of overlying soils; – the coefficient of lateral earth pressure under conditions of natural occurrence.

The open or underground excavation changes the equilibrium conditions of the soil and leads to the emergence of deformation and redistribution of stresses.

Earth pressure on underground structures is different than the pressure in the intact rock mass at the same depth, as: Continue reading

Mysterious underground tunnels

Mysterious underground tunnels are found on all continents. Experts are convinced that this is a very ancient constructions. But it is still unknown who built and for what purpose.

Moves under the world

Polish researcher Jan Pink argues that system of ancient tunnel covers the entire planet, including the ocean floor. The tunnels seemed to be burned into the surface of the earth. Their walls are hardened melt rocks that look like glass. Modern humanity is similar tunneling technology is unknown.

The oldest tunnels, whose age is estimated at nearly a million years, was found in 1965 by the Argentina ethnologist Juan Moritz. In Ecuador, in the province of Morona-Santiago, his expedition explored and mapped the system of tunnels, mostly rectangular, running at a depth of 230 meters. Their smooth walls seem to be polished. They are ventilation pipes with a diameter of about 70 centimeters. These mysterious underground structures extend for hundreds of kilometers in different directions, including towards the Pacific ocean. Most of them still remain unexplored. Continue reading