water level: 10 years of rise and fall, step by step
from 70s to 2003 of the last century, Baotu Spring had broken down 26 times, the shortest cut off for more than two months, the longest for two years. The rise and fall of the groundwater level is directly related to the sprouting, situation and landscape of the spring water. Every year, there is an early warning line of 28 meters in the groundwater level, which has broken the red warning line of 27.60 meters in many years in 2007 and 2009. According to the record, at the end of March 2009, the weather was drought, the Baotu Spring water level fell 28.15 meters of yellow early-warning line, and lost 28 meters of orange early-warning line, next to the April and May drop of 27.60 meters of the red early-warning line. The water level of the Baotu Spring is 27.01 meters, and the red warning line is only half a meter away from the water level.
Open Source: the citizens are willing to drink the Yellow River water
for the sake of the spring, the people of Ji'nan have made great sacrifices, including the urban water supply replacement water source, reducing and stopping the exploitation of the groundwater, and citing the water source of the Yellow River.
from the 80s of last century, the Ji'nan municipal government will open up new water sources in order to protect the water and solve the problem of drinking water in urban areas, and the replacement of water source will be included in the work plan. In 1988, the southern suburb water plant, which took the reservoir as the source of the Hui Hushan Reservoir, was built in the southern suburb of Ji'nan. The water supply pattern of the single groundwater was changed in the urban area. In 1989, the the Yellow River water plant was put into use, and the watershed water plant was put into operation in 1999. Since 2006, Ji'nan has decided to implement the east alliance water supply project in the eastern part of the city, so as to realize the replacement of water sources for the large production households in the eastern part of the province.
combined with the south to North Water Transfer Project, the Ji'nan city started the water diversion project of Yufu River's supine tiger mountain reservoir, and introduced the Southern Yangtze River water and the nearby the Yellow River water into the yuhushan reservoir. After the completion of the project, the water outlet on the pipeline can be directly leaked through the Yufu River to ensure that the spring group is gushing to solve the puzzling problem that plagued Ji'nan for many years.
throttle: well sealed well
it is well known that under the condition of no change in precipitation, the decrease of water level is the amount of groundwater exploitation. The most direct way to protect springs is to reduce the exploitation and supplement of groundwater.
in order to protect springs, in April 9, 2005, Baotu Spring fell below 28 meters, and Ji'nan worked out measures to seal wells, supplement sources and save water. In April 10, 2006, the Ji'nan spring emergency plan was released. In November 2006, Ji'nan established the "cross policy" for protecting springs, that is, increasing rainfall, supplementing the source, setting up production, controlling flow and saving water. In March 14, 2008, the hushushan reservoir was opened by sluice and recharged. Since then, almost every year when the water level falls below 28 meters, the hushushan reservoir will open and sluice. It is understood that in order to solve the contradiction between the use of groundwater and the conservation of the spring, the Ji'nan city has closed the more than 2000 eyes self-contained wells in the urban area, and the daily subtraction of underground water is about 120 thousand parties.
spring and city: subway, light rail construction, avoiding spring traffic
rail transit is an inevitable choice for urban transportation to a certain stage. After repeated discussions and discussions, the Ji'nan Metro almost abandoned the subway in the old urban area of Ji'nan, and chose the light rail.
in September 2012, Yang Luyu, the mayor of Ji'nan, made a clear request at a meeting that "the subway construction first avoided the spring water sensitive area of the old city and accelerated the construction of other regions."
in May of this year, the environmental impact assessment of Ji'nan's urban rail transit construction plan was launched for the first time. In order to ensure the great protection of the spring water, the recent construction of Ji'nan rail transit line has avoided the central area and the spring water protection sensitive area, and the three planning lines are mainly on the ground. So far, the subway plan, which has been fermited for many years, has been officially identified as a light rail line. This decision will also be recorded in the history of Baoquan, Ji'nan.