system, gas drainage system, and leachate collection and treatment system, as well
as auxiliary facilities for power and water supply, access roads, management rooms,
and fences.
The study area enjoys typical plateau continental climate with sufficient sunshine
that ensures abundant solar energy resources. The prevailing wind direction during
the year is northwest, which crosses the town’s dominant wind direction. Frequent
and strong winds create sound conditions for diffusion, so air pollutants from this
small landfill will not undermine the ambient air of the town.
The landfill will not adversely affect the living environment of residents either as
no factories and mines are in the vicinity and the nearby residential sites are 7 km
away. The proposed site is located in the natural gully where geologically, is
relatively stable without active collapse zones, fault zones, underground ore zones,
lime pits and lava caverns. There is no perennial water flow and groundwater
endowment due to simple hydrogeological conditions and poor permeability.
Though large, the bare mountain and dry gully has no use value.
The refuse dam is a 15 m high trapezoidal sandstone dam (Fig. 5.18). The
upstream slope is 1:2.0 and the downstream slope 1:2.5. The width is 5 m at the top
and 106 m at the bottom, and the length at the bottom is 40 m. Involving 43,000 m
3
of earthworks, the dam can weather seven degrees of seismic intensity. The local
mean annual precipitation is 82 mm and the maximum daily precipitation is 24 mm.
Fig. 5.18 Preliminary realistic view of Dachaidan Landfill
168
5 Application Cases
as auxiliary facilities for power and water supply, access roads, management rooms,
and fences.
The study area enjoys typical plateau continental climate with sufficient sunshine
that ensures abundant solar energy resources. The prevailing wind direction during
the year is northwest, which crosses the town’s dominant wind direction. Frequent
and strong winds create sound conditions for diffusion, so air pollutants from this
small landfill will not undermine the ambient air of the town.
The landfill will not adversely affect the living environment of residents either as
no factories and mines are in the vicinity and the nearby residential sites are 7 km
away. The proposed site is located in the natural gully where geologically, is
relatively stable without active collapse zones, fault zones, underground ore zones,
lime pits and lava caverns. There is no perennial water flow and groundwater
endowment due to simple hydrogeological conditions and poor permeability.
Though large, the bare mountain and dry gully has no use value.
The refuse dam is a 15 m high trapezoidal sandstone dam (Fig. 5.18). The
upstream slope is 1:2.0 and the downstream slope 1:2.5. The width is 5 m at the top
and 106 m at the bottom, and the length at the bottom is 40 m. Involving 43,000 m
3
of earthworks, the dam can weather seven degrees of seismic intensity. The local
mean annual precipitation is 82 mm and the maximum daily precipitation is 24 mm.
Fig. 5.18 Preliminary realistic view of Dachaidan Landfill
168
5 Application Cases