the key of the coal mining above confined aquifers is to understand the water resistion ability of the coal seam floor.
承压水上采煤的关键问题是煤层底板是否能有效地阻止底板高压水突出。
the monitoring network density and sampling frequency of the top unconfined and deep confined aquifers in beijing plain were optimized respectively in this paper.
by combination of geology and drilling, percolation coefficient of q1-3 confined aquifers is measured deep in the dam foundation by overflow test instead of pumping test.
地质与鉆探配合,用溢水试验代替抽水试验,对坝基深部q'1-3承压水层的渗透系数进行了测定。
the confined aquifers have been formed by sediments of the ancient five channels which containing plenty of fresh-water resources to be exploited.