(2) Project overview
The storage capacity of the first phase of a landfill site is 7.15 million m
3 , and the
sanitary landfill method is adopted. The landfill was completed and put into use in
October 1995, and the whole project passed the acceptance inspection in January
1996.
Main contents of Phase I project:
① Refuse dam: vertical anti-seepage treatment by curtain grouting under the
refuse dam, without substrate treatment, is adopted to prevent leachate from
penetrating vertically and polluting downstream water bodies;
➁ Flood intercepting trench: it will be built around the landfill to prevent surface
runoff from entering the landfill to reduce the amount of leachate generated;
➂ Pollutant intercepting dam: building a sewage collection pond (with a
designed capacity of 100,000 m
3 ) to store leachate and take seepage and
corrosion prevention measures;
➃ Sewage treatment station: building a sewage treatment station and adopt
combined anaerobic and aerobic process;
➄ Other supporting projects such as roads and office buildings.
The main contents of the second phase of a landfill include dam works, seepage
control works, leachate drainage system, groundwater diversion system, landfill gas
drainage utilization system, flood control system in the site and leachate regulating
tank. Phase II Project is divided into short-term and long-term construction. The
short-term landfill capacity is 1.452 million m
3 (including a refuse landfill capacity
of 1.23 million m
3 and an ash landfill capacity of 222,000 m
3 ), with a landfill
elevation of 560 m (the boundary elevation of the landfill area is 560.0 m), and a
design daily average refuse capacity of 350 t. The long-term landfill capacity is
2.45 million m
3 , with a landfill elevation of 587 m (the boundary elevation of the
landfill area is 580.0 m), as shown in Fig. 5.32 and Table 5.69.
2. Landfill investigation
(1) Regional geological conditions
① Stratdum
The exposed strata in the area are relatively simple, including Nanyuan Formation
(J3n), Early Cretaceous Xiaoxi Formation (K1x) and Quaternary Pleistocene (undivided) elluvium (Qpel), Middle Pleistocene Tong’an Formation (Qp2t), Upper
Pleistocene Longhai Formation (Qp3l) and Middle Upper Holocene Changle
Formation (Qh2-3c).
② Intrusive rock
Intrusive rock masses are widely distributed in the area, mainly in the areas of
E’feng and Yangkengwei on the southeast side of the working area. In addition,
there are many intrusive rock masses in the volcanic rock in the working area, with
the dikes mostly distributed in the NNE direction, mainly including the late
5.4 Southeast China
225
The storage capacity of the first phase of a landfill site is 7.15 million m
3 , and the
sanitary landfill method is adopted. The landfill was completed and put into use in
October 1995, and the whole project passed the acceptance inspection in January
1996.
Main contents of Phase I project:
① Refuse dam: vertical anti-seepage treatment by curtain grouting under the
refuse dam, without substrate treatment, is adopted to prevent leachate from
penetrating vertically and polluting downstream water bodies;
➁ Flood intercepting trench: it will be built around the landfill to prevent surface
runoff from entering the landfill to reduce the amount of leachate generated;
➂ Pollutant intercepting dam: building a sewage collection pond (with a
designed capacity of 100,000 m
3 ) to store leachate and take seepage and
corrosion prevention measures;
➃ Sewage treatment station: building a sewage treatment station and adopt
combined anaerobic and aerobic process;
➄ Other supporting projects such as roads and office buildings.
The main contents of the second phase of a landfill include dam works, seepage
control works, leachate drainage system, groundwater diversion system, landfill gas
drainage utilization system, flood control system in the site and leachate regulating
tank. Phase II Project is divided into short-term and long-term construction. The
short-term landfill capacity is 1.452 million m
3 (including a refuse landfill capacity
of 1.23 million m
3 and an ash landfill capacity of 222,000 m
3 ), with a landfill
elevation of 560 m (the boundary elevation of the landfill area is 560.0 m), and a
design daily average refuse capacity of 350 t. The long-term landfill capacity is
2.45 million m
3 , with a landfill elevation of 587 m (the boundary elevation of the
landfill area is 580.0 m), as shown in Fig. 5.32 and Table 5.69.
2. Landfill investigation
(1) Regional geological conditions
① Stratdum
The exposed strata in the area are relatively simple, including Nanyuan Formation
(J3n), Early Cretaceous Xiaoxi Formation (K1x) and Quaternary Pleistocene (undivided) elluvium (Qpel), Middle Pleistocene Tong’an Formation (Qp2t), Upper
Pleistocene Longhai Formation (Qp3l) and Middle Upper Holocene Changle
Formation (Qh2-3c).
② Intrusive rock
Intrusive rock masses are widely distributed in the area, mainly in the areas of
E’feng and Yangkengwei on the southeast side of the working area. In addition,
there are many intrusive rock masses in the volcanic rock in the working area, with
the dikes mostly distributed in the NNE direction, mainly including the late
5.4 Southeast China
225