-class 5: basalt black blue fill Bureau Foundation put lightning-dust. Rock khổi, exist form the cornerstone in size from 20 to 50 cm. distribution of scattered over the area. This is the layer of weathered basalts form platform to roll, this class is not uniform distribution gathered in the sunken areas. This heterogeneous layer distribution in the whole line, caught in the deep layers of the soil medium from 0.6 to 2.6 m, separate from paragraph g2-g5 is fairly shallow, especially g3-g4. so in the process of constructing the need redefine exactly the intensity of resistance to compression, select subject construction.* hydro geological conditions:hydrogeology in the area in General and the selected works in particular exist quite rich in variety, with large reserves, through the process of the survey we see exists the create groundwater in the area yet.-not water in basalt eruptions formation: formation yet this country consists of gravel and pebble stone products strong weathering of basalt eruption, sources mainly precipitation, the basin. water drainage sources mainly evaporation and the basin of the rivers and streams. the depth of this country yet floor storage varies according to terrain conditions fluctuate 2.0-18.0 m. within the scope of the work, the water layer does not affect the process.-not water in Quaternary system: water storage formation consists of sand, gravel-sand. the water supply is primarily a rain water and saline water drainage sources, mainly evaporation. This water layer Dynamics change according to the season, depth ranged from 15.0-20.0* conditions of geology-earthquakes:overall in the survey area at least has the dynamic geological phenomena occur that affects the process. with the terrain in the area is high the little change, annual precipitation is focused, structural properties of soils in the area of research. in the survey area in General and the particular line occurs some geologic process of motivation of note:the phenomenon of erosion surfaces: terrain line routes go through mostly hilly, steep angle, the difference in elevation is higher and the average terrain, there where quite steep. In addition to the influence of rain annually. the geological structure in the area is mainly clay-clay, sand and crushed gravel Hotel content. should the terrain be average denudation.weathering phenomenon: during the formation of the geological structure, mineral area formed mainly of granite, basalt and little slate. the topography of the area is high, so the terms weathering occurred almost across the rope line area. This is what happens with long time should be less photo Huong to works.* earthquake:According to the seismic partition of Vietnam Institute of physics, the survey is in level 5-6 earthquake font under the table to partition shocks with a frequency of repeat B1 > = 0.005 (T cycle = < 200 years)electrical resistivity of the soil: soil electrical resistivity measurement of rock proceeded in June 2014.the unit design has created the table of calculation results of measuring resistivity depth according to the decision approved 11 positions, the work of the resistivity measurement points in addition to the scene is shown according to the geological characteristics in full-line routes to ease the work of design. resistivity measurement results and calculate the following data appendices.
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