Monthly archives: September, 2021

Major Satellites of Solar System.

All the planets of Solar System except Venus and Mercury have satellites (moons). Out of these, Jupiter leads with 63 moons followed by Saturn (56) and Uranus (27). Notable moons of Solar System are as given in the table below. Planets Total No. of Satellites Major satellites Mars 2 Phobos, Deimos Jupiter 63 Europa, Ganymede, …

Weathering Process and Types of weathering.

The rocks break and undergo decay under the influence of atmospheric agencies like winds, sun, frost, water and organisms and produce soil. This phenomenon is called ”weathering”. Weathering and erosion together lowers the mountains and produce sediments. The weathering may be defined as the process which tends to break and decompose rocks in place. It …

Geological Survey of Tunnels

In most cases, the location and alignment of tunnels and the size of the bore are established prior to the geological survey. Before starting the geological investigation photo-geological interpretation should be done along the tunnel alignment. This will provide information on the topography, nature of surface material, broad geologic structure, water conditions, and vegetation. The …

What is Geography. What are its main branches.

Geography Geography is the study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources and political and economic activities. In other words Geography is the study of places and the relationships between people and their environments. …

Tunnel Engineering

What is Tunnel Engineering: The field of civil engineering, which is related to the construction and designing of tunnels is known as the ”tunnel engineering”. Tunnel construction is an essential and inevitable process during road construction. Tunnels usually shorten the distances and reduce the difficulties caused by elevations. Tunnels are also built in the cities …

Geological Investigation of Dams and Reservoirs

In order to detect geological flaws and to select a suitable site for the construction of dams and reservoirs, deep geological investigation of that particular area is carried out. The prime objective of this investigation may be summarized in the following lines. Physiographic features of that particular area are studied during the geological investigation. The …

Geology of Reservoirs

Reservoirs are artificial lakes, which are created by the construction of dams across rivers. A reservoir may fail either due to excessive leakage of water or as a result of rapid sedimentation or rupture due to earthquakes. Problems associated with Reservoirs:  The main geological problem connected with the reservoirs are: (i) groundwater conditions, (ii) permeable …

Problems associated with Dams/ Failure of Dams

Some of the most common and frequently occurring problems associated with dams are the factors, which cause a dam to fail. Most of the dam failures, which have occurred in the past are not due to faulty design or poor construction, but mainly due to neglect of the geological flaws. The main geological problems that …

Geology of Dams

Dams Dams are a common and cheap means of storing water. Dams are constructed as barriers across the rivers thereby storing their water. They are built mainly to control floods, for irrigation lands, for generating electricity and supplying water to industries and cities. A dam that serves more than one purpose is called a ”multipurpose …

Different types of rocks used as building stone

As in the earlier post, it is mentioned, that the usage of rocks as building stone is totally dependent on their strength and durability. Some of the properties which make the rocks eligible for usage as a building material are their strength, permeability, durability, and resistance to heat. Keeping in view these properties geologist chose …