CHANGE OF A HIGHWAY ROUTE CAUSED BY A ROCKSLIDE

Miloslav Kopecký,Marek Fraštia,Pavel Liščák,Jana Frankovská,Jan Novotný,Martin Brček,Martin Ondrášik

doi:10.14311/app.2020.29.0011

Abstract

During the spring of 2013, a relatively large rockslide with a total area of 96,952 m2 occurred in the eastern part of the Malá Fatra mountains. The anticipated depth of the slip surfaces was from 30 to 40 metres and the volume of moving mass was estimated to be 2,000,000 m3. The maximum movement of the rockslide on the first day in March 2013 was estimated to be 43 m. The front of the rockslide interfered with the projected D1 highway route. The paper presented here offers an analysis of the causes of the rockslide and its activity in association with the potential threat to the proposed highway.

Highlights

In March 2013, an extensive rockslide occurred in the Kraľovany-Rieka quarry, known as the quarry Šútovo
The rockslide posed a significant threat to the rock quarry and the nearby lake used for recreational purposes, but mostly as a threat to the construction of the D1 highway, which was planned before the rockslide occurrence in the rockslide front (Fig.1 blue line)
In March 2013, an extensive rockslide occurred in the quarry Kraľovany-Rieka

Summary

Introduction

In March 2013, an extensive rockslide occurred in the Kraľovany-Rieka quarry, known as the quarry Šútovo. The maximum movement of the rockslide at its instigation in March 2013 was estimated to be 43m. The rockslide posed a significant threat to the rock quarry and the nearby lake used for recreational purposes, but mostly as a threat to the construction of the D1 highway, which was planned before the rockslide occurrence in the rockslide front (Fig. blue line). One of the variants of the new route was planned on the south (Fig.1- black line - variant V-1) which was investigated [2] and its stability assessed [3]

Conditions and causes of rockslide development

Slope stability calculations and a proposal for rockslide remediation

Conclusions