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The Study On The Exploring And Using Of The Karst Water In Qipanjing Area

Posted on:2011-11-28Degree:MasterType:Thesis
Country:ChinaCandidate:S Y YangFull Text:PDF
GTID:2120360305454452Subject:Hydrology and water resources
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Qipanjing area is to the south of Wuhai, Inner Mongolia Autonomous Region. It is subjected to Zhuozi fold and fault bunch of the west edge of Erdos depression in north Chinese platform. Folds and faults were more developed there. There are valleys and basins in its central section. Middle or low mountains such as Zhuozi, Gangder and Laoshidan, etc, are in its west and north-west part. It connect Erdos plateau in the east. The south part is hilly.The area is among the inland. Its rainfall is small, and its weather is drought. There is little surface water. The mainly groundwater is the Majiagou-group karst water of OrdoviClan.The karst water there is belong to the south Zhuozi m.t and Gangder m.t karst water subsystem of Zhuozi m.t region karst water inferior system of Erdos basin karst water system. There were basic factors for the growth of karst. They were the terrane that could be solved and the water that had eroding ability. The type of its karst is attributed to North karst. The karst is fundmentally in standstill and die out period. The karst has following features. First, its ground shape is not growthy. And its underground shape, such as dissolve holes, small caves, solution crevices and cavities, etc, is growthier. The karst mainly developed in the Majiagou-group limestone of OrdoviClan that is at the part of synclinal axise and tension fault belts.The area mainly has two kinds of karst types:the crevasse - dissolved crack and the dissolved crack - dissolved seam. The karst type of the supplies-runoff area, northeast, is the crevasse - dissolved crack primarily. To the southwest, the runoff excretion area, the karst type is the dissolved crack - dissolved seam primarily. In the west south, the excretion area is the dissolved seam primarily. In the opening fault zone, in the synclinal axis department, as well as in exposed and shallow submersion area, because the karst even more grows, and the karst ground water concentrate with the migration channel. The main area where is rich of karst ground water includes: F86 faulted belt, it is in front of Zhuozi, and between the Qipanjing and Kesuwu reversed fault. F92, F93 faulted structure belt, southeast to Qiparijing. The connected zone of Heilonggui opening fault and reversed fault. East Laoshidan faulted belt.The karst ground water mainly accepts the direct permeating supplies from atmospheric water. It also accepts the undercurrent supplies from ditches cutting calcareous rock. And accepts supplies from the Cretaceous system ground water through the break crushed zone, as well as accepts supplies from,the Carboniferous and Permian sandstone crevice water through vertical leakage.The karst ground water accepts the supplies in the northern area where calcareous rock exposed. It migrates downward along the dissolved cracks. Then it turns to the south, the west, and flows along openning faulted structure belts to the southwest. It appears in springs to drain at Laseng temple in the southwest in the end.This time I used the supplies mensuration, the balanClng, the analytic method and the forecast law to calculate and evaluate the karst water amount of resources. Finally, I have took the natural supplies quantity when the preClpitation guarantee rate is 75%,2.065x104m3/d as the karst water permission mining amount of resources.The karst water quality is generrally divided by Wuzhuling ditch.In the karst water of the Southeast to Wuzhuling ditch where the limestone is buries deeply, Cl and SO4 increase obviously. And the mineral content of the karst water is bigger than 1.0 g/L. the karst water quality misses slightly.In the karst water of the northwest to Wuzhuling ditch where the limestone is buries shallowly, the components of three main kind of anion are quite. And toward the northwest, the HCO3 content increases. And the mineral content of the karst water is smaller than 1.0 g/L. the karst water quality is good.The present produced quantity of the karst water is 4.304x104m3/d. It has already been extacted ultraly. The karst water source is unwatering. We should seek for the new substitution water source, and to take the karst water as regulating or reserve water resource.
Keywords/Search Tags:Qipanjing area, Karst, Karst groundwater, OrdoviClan, Majiagou-group, Limestone, Resources
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