Exploration method for mountain-front alluvial-proluvial fan large-scale water source

The invention provides a mountain-front alluvial-proluvial fan large-scale water source exploration method, which comprises seven steps of data collection and surveying and mapping, large-scale water source exploration well group arrangement, hydrological logging, mining pumping test, water quality analysis and sample collection, surface water and underground water dynamic monitoring and underground water resource evaluation. On the basis of collecting hydrogeological survey and scientific achievement data of an alluvial-proluvial fan in an exploration area, the exploitable quantity and the current development and utilization situation approved by all built water source areas of the alluvial-proluvial fan in the exploration area are further investigated, and the exploitable quantity of underground water of the alluvial-proluvial fan in the exploration area is found out; the method mainly investigates the river infiltration amount of an exploration area, a northern overflow zone, an artificial river and east a