Featured Research

from universities, journals, and other organizations

The Dynamics Of Rocky Inclines

Date:
November 22, 2005
Source:
Elhuyar Fundazioa
Summary:
It is common to see banks or inclines on the roadside or at the side of railway cuttings. They are formed when a side of a mountain or other earth feature is cut through for the construction of various infrastructure. As they are unstable zones, many problems are created and, in the case of the Basque Country.

It is common to see banks or inclines on the roadside or at the side of railway cuttings. They are formed when a side of a mountain or other earth feature is cut through for the construction of various infrastructure. As they are unstable zones, many problems are created and, in the case of the Basque Country, the problems are aggravated by a number of factors: the complex orographic terrain, the high rainfall and the area being abundant in sedimentary material.

Risk and consequences

Instabilities arise on rocky banks due to the geomechanical features of the rocky mass, because of the state of conservation of the slope itself, and due to the conditions of water penetration.

Once the movement of rocks has started, the key factor in the movement is the inclination of the bank. Also, the size of the incline influences the probability of rock falls. Why? Because the higher and longer the slope, the greater the rock mass under risk of rock fall and, in the case of a landslide occurring, greater will be the damage done.

It should be taken into account that some locations have the material of the banks pointing directly towards the road or railway, due to the fact that it had this orientation originally within the rock mass. In other cases, the rocks are pointing in another direction and so do not present such a risk and any rock fall will probably not reach the road or the rail tracks.

Corrective measures

The aim of all these geotechnic measures is to identify, control and correct elements that might be unstable. To do this it is necessary to establish protocols or programmes of action. By means of these programmes, the improvements that may be obtained with corrective measures are evaluated and the problems registered thus resolved.

Concretely, the group of hydrogeology-geotechnics at the University of the Basque Country has developed a programme based on 10 parameters: classification of rocks (classification undertaken for the rock masses in the Basque Country), orientation of cracks, hydraulic conditions, facility of meteorisation of the rocks, history of the incline or bank, volume of the unstable blocks/mass, the height of the bank, the likelihood of the rocks reaching the road, the distance of vision vs. the distance of reaction and the importance of the road. Through these parameters, the stability of the rocky bank and the damage from a rock fall estimated. Thus, 8 classes of rock are differentiated and information provided on the features and behaviour of the bank.

Finally, corrective measures are proposed for each type of rock. Amongst these measures is the use of steel bars as tensors, covering the slope with concrete, placing dynamic nets to catch the rocks, etc. In the last analysis, the aim of all these studies is to propose suitable corrective measures for each case and, thus, to minimise risks.


Story Source:

The above story is based on materials provided by Elhuyar Fundazioa. Note: Materials may be edited for content and length.


Cite This Page:

Elhuyar Fundazioa. "The Dynamics Of Rocky Inclines." ScienceDaily. ScienceDaily, 22 November 2005. <www.sciencedaily.com/releases/2005/11/051121165214.htm>.
Elhuyar Fundazioa. (2005, November 22). The Dynamics Of Rocky Inclines. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2005/11/051121165214.htm
Elhuyar Fundazioa. "The Dynamics Of Rocky Inclines." ScienceDaily. www.sciencedaily.com/releases/2005/11/051121165214.htm (accessed July 25, 2014).

Share This




More Matter & Energy News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins