Water experts gather in Ji'nan for "consultation" spring protection: "funnel" is urgent and repair can not afford.
the Ji'nan daily
Baotu Spring, and other four spring groups have been spout for 11 years, which has played an important role in the strong leakage area. However, at present, 24 strong leaks in Ji'nan are subject to 10 human disturbance, 5 of which are completely covered and hardened by urban construction, and the supply capacity is lost. At the Ji'nan spring area key leakage zone protection and restoration planning review conference held yesterday, the experts from the domestic related fields were holding the pulse for the conservation spring. It was believed that the existing strong leakage zones must be protected and the leakage zone was expanded to allow more spring water to rest.
nearly half of the severe
nearly half of the strong leakage zone is being disturbed by the human interference
along the Shushan reservoir. There is a strong leakage zone around 2 kilometers. The river bed is not the same as other places, mainly composed of cobblestones. For recharge, most of the water can be seeped underground, which has a certain supporting effect on the groundwater level and achieves the effect of maintaining the spring.
it is understood that there are 24 strong seepage zones in the Ji'nan spring area. However, with the acceleration of urbanization, various development and construction have increased the area of impervious building and hardened pavement, and weakened the infiltration function of soil. At present, 10 strong seepage areas are subject to human disturbance, and 5 of them have lost supply capacity. The related research shows that the increase of 1 square kilometers per water area in the direct supply area will reduce the 250 thousand cubic meters of infiltration groundwater and increase the surface runoff of 457 thousand and 300 cubic meters. The increase of hardened area will directly reduce the effective supply of groundwater in spring area.
the private exploitation of groundwater is the largest barrier to the conservation of spring water, and the private exploitation of groundwater in some places still exists in some places, and this is the biggest obstacle on the road of the conservation spring.
protection measures
enlarging the leakage area to increase the blood transfusion ability
Song Zhenqi told reporters that the leakage area itself is underwater area, the above house has been built, there is no way, all has been built and how to restore it, only the existing leakage area is expanded to expand its supply. Scope, protect the existing leakage area, and allow it to store water as much as possible through some water resources, so as to maximize its efficiency. Wang Chao, the academician of the Chinese Academy of engineering and Wang Chao, vice president of the Hohai University, also held the same view. He said that the protection of spring water is the greatest highlight of the water ecological construction in Ji'nan. (newspaper reporter Liu Wen)
news background
the overall layout of key leakage zone in Ji'nan spring area is summarized as one area, three belt, two type, seven type, twenty-four point. One area: the three belt of the Ji'nan spring area recharge area: the cover zone of the built-up area, the suburb zone of the north to South and the far outskirts of the built-up area in the Ji'nan spring supply area, seven types of near natural strong leakage zone and human disturbance strong leakage zone: the strong seepage zone enclosed by the near natural strong leakage zone and the strong channel type The leakage zone, the valley type strong leakage zone, the reservoir type strong leakage zone, the depression type strong leakage zone, and the human disturbance strong leakage zone including the development and construction strong leakage zone and the fully covered strong leakage zone of the city twenty-four points are 24 strong leakage zones.