Academia.eduAcademia.edu

Figure 25 – uploaded by tesfaye chala

See full PDFdownloadDownload figure
Figure 4. 12 a) Arrival times of P-waves curves for 24-channel seismic spread b) Travel- computer, travel time data, packing the first arrival from each geophone, construct velocity graph as described in figure 3.15. Generally, field measurement, signal recording on portabl.

Figure 4 12 a) Arrival times of P-waves curves for 24-channel seismic spread b) Travel- computer, travel time data, packing the first arrival from each geophone, construct velocity graph as described in figure 3.15. Generally, field measurement, signal recording on portabl.

Related Figures (64)

Figure 1. 1 Location map of the study area
Figure 1. 1 Location map of the study area
Figure |. 2 Physiography of study area
Figure |. 2 Physiography of study area
Figure1.3 Field photos illustrating landslide problem a) completely damaged road; b) damaged grass land and soil; c) destructive agricultura land with sorghum and d) completely damaged local home
Figure1.3 Field photos illustrating landslide problem a) completely damaged road; b) damaged grass land and soil; c) destructive agricultura land with sorghum and d) completely damaged local home
Field work: has been conducted to generate primary data using different geophysical
Field work: has been conducted to generate primary data using different geophysical
1.8 Review of the previous works
1.8 Review of the previous works
Table 2 Landslide classification (Varnes, 1978) two or more different mode movement acting downslope movement of the landslide mass.
Table 2 Landslide classification (Varnes, 1978) two or more different mode movement acting downslope movement of the landslide mass.
marls) by decreasing shear strength of the slope.
marls) by decreasing shear strength of the slope.
where p, the constant of proportionality is known as the electrical resistivity. resistance which given by:
where p, the constant of proportionality is known as the electrical resistivity. resistance which given by:
Table 3 Resistivity’s of different rocks types taken from (Loke, 1999) 2.4.3 Producers of Resistivity Surveys
Table 3 Resistivity’s of different rocks types taken from (Loke, 1999) 2.4.3 Producers of Resistivity Surveys
Table 4 Seismic velocities for rocks (Mussett and Khan, 2000)
Table 4 Seismic velocities for rocks (Mussett and Khan, 2000)
in velocity with depth. according to Snell’s law (figure 2.4). The method was dependent on there being an increase Where o@ is denoting the incident angle, B the refraction angle of the travel path with respect
in velocity with depth. according to Snell’s law (figure 2.4). The method was dependent on there being an increase Where o@ is denoting the incident angle, B the refraction angle of the travel path with respect
Figure 2.5 Simple two layer case with plane, parallel boundaries and corresponding time-
Figure 2.5 Simple two layer case with plane, parallel boundaries and corresponding time-
Figure 3. 1 Regional geology of the present study area (Tefera et al., 1996) 3.2 Local geology
Figure 3. 1 Regional geology of the present study area (Tefera et al., 1996) 3.2 Local geology
Figure 4. 4 Field photos illustrating human activity along landslide prone area a) dumping waste down the slope; b) removing bushes from slope; c) slope excavation and d) Generate rock fall
Figure 4. 4 Field photos illustrating human activity along landslide prone area a) dumping waste down the slope; b) removing bushes from slope; c) slope excavation and d) Generate rock fall
Figure 4. 6 Landslide distribution map and VES points
Figure 4. 6 Landslide distribution map and VES points
calculation) 4.1.10 Landslide impact assessment on natural environment and infrastructures
calculation) 4.1.10 Landslide impact assessment on natural environment and infrastructures
Figure 4.8 Field photos illustrating of landslide impact to natural environment a) completely damaged main road; b) completely damage agricultural land; c) landslide damaged grass land and soil and d) morphological change
Figure 4.8 Field photos illustrating of landslide impact to natural environment a) completely damaged main road; b) completely damage agricultural land; c) landslide damaged grass land and soil and d) morphological change
were surveyed and resistivity data has been collected from 14 stations (Figure 3.10)
were surveyed and resistivity data has been collected from 14 stations (Figure 3.10)
Figure 4.9 Electrical Resistivity field measurement setup and data acquisition
Figure 4.9 Electrical Resistivity field measurement setup and data acquisition
information about the depth or thickness of overburden material and velocity variation along
information about the depth or thickness of overburden material and velocity variation along
Figure 5. 1 Geo-electric section; Pseudo-depth section of line 1 and completely damage local home
Figure 5. 1 Geo-electric section; Pseudo-depth section of line 1 and completely damage local home
Figure 5. 4 Geo-electric section and pseudo-depth section of line 4
Figure 5. 4 Geo-electric section and pseudo-depth section of line 4
Line 2 layers. This may relatively massive and compacted which considered as weathered limestone This survey line is covers about 60m long and located at the sounding line-4 VES-1 and
Line 2 layers. This may relatively massive and compacted which considered as weathered limestone This survey line is covers about 60m long and located at the sounding line-4 VES-1 and
lame of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
lame of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
Vame of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
Vame of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
Name of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
Name of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
Jame of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
Jame of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
Name of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
Name of Study : THE PROJECT FOR DEVELOPING COUNTERMEASURES AGAINST LANDSLIDESIN THE ABAY RIVER GORGE
Related topics:
Landslide Susceptibility and Hazard Modeling
580 California St., Suite 400
San Francisco, CA, 94104
© 2025 Academia. All rights reserved