by lateral runoff and overflow. The natural dynamic type of groundwater of this
layer is infiltration-runoff. According to the groundwater flow field (Fig. 5.70)
drawn in June 2015, the groundwater of this layer generally flows from west to east
with a hydraulic gradient of 1.25%.
III. Confined water
The groundwater in this layer is recharged mainly by lateral runoff and overflow,
and the discharged mainly by lateral groundwater runoff and man-made recovery.
The natural dynamic type of the groundwater of this layer is infiltration-runoff. Due
to human factors, the groundwater level of this layer changes greatly. According to
the dynamic data of groundwater level over the years, since the 1990s, due to the
rapid development of industry and agriculture, urban construction has developed
rapidly, water consumption has increased year by year, and groundwater level has
shown a downward trend.
There are two major water source wells in use in the industrial area, which are
located in the production area and the living quarters respectively. The production
intervals of these two wells are confined aquifer, with the current production of
about 800 m
3 /d, for production and 716 families with about 1500 people. At the
southwestern side of the site, there are currently 11 motor-pumped wells in
Dagaoshe Village and 6 motor-pumped wells in Xiaogaoshe Village, with a depth
of about 40 m and a production of about 150 m
3 /d mainly for domestic consumption and agricultural irrigation.
(3) Analysis of contact relationship between landfill pit and aquifer
The security landfill site is designed with rigid structure, with the underground
depth of 12.5 m. The contact relationship between the landfill pit and the aquifer is
shown in Fig. 5.71. The rigid landfill pit basically cuts through the phreatic–confined aquifer, and this groundwater layer shall be selected as the target aquifer for
monitoring and analysis.
February 2013
September 2013
April 2014
October 2014
May 2015
November 2015
Water level (m)
Fig. 5.69 Dynamic curve of inter-annual variations of phreatic water–confined water levels of the
project site
300
5 Application Cases
layer is infiltration-runoff. According to the groundwater flow field (Fig. 5.70)
drawn in June 2015, the groundwater of this layer generally flows from west to east
with a hydraulic gradient of 1.25%.
III. Confined water
The groundwater in this layer is recharged mainly by lateral runoff and overflow,
and the discharged mainly by lateral groundwater runoff and man-made recovery.
The natural dynamic type of the groundwater of this layer is infiltration-runoff. Due
to human factors, the groundwater level of this layer changes greatly. According to
the dynamic data of groundwater level over the years, since the 1990s, due to the
rapid development of industry and agriculture, urban construction has developed
rapidly, water consumption has increased year by year, and groundwater level has
shown a downward trend.
There are two major water source wells in use in the industrial area, which are
located in the production area and the living quarters respectively. The production
intervals of these two wells are confined aquifer, with the current production of
about 800 m
3 /d, for production and 716 families with about 1500 people. At the
southwestern side of the site, there are currently 11 motor-pumped wells in
Dagaoshe Village and 6 motor-pumped wells in Xiaogaoshe Village, with a depth
of about 40 m and a production of about 150 m
3 /d mainly for domestic consumption and agricultural irrigation.
(3) Analysis of contact relationship between landfill pit and aquifer
The security landfill site is designed with rigid structure, with the underground
depth of 12.5 m. The contact relationship between the landfill pit and the aquifer is
shown in Fig. 5.71. The rigid landfill pit basically cuts through the phreatic–confined aquifer, and this groundwater layer shall be selected as the target aquifer for
monitoring and analysis.
February 2013
September 2013
April 2014
October 2014
May 2015
November 2015
Water level (m)
Fig. 5.69 Dynamic curve of inter-annual variations of phreatic water–confined water levels of the
project site
300
5 Application Cases