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我队曾在三迭系(中统)灰岩中进行抽水试验。其水文地质条件及钻孔的地质结构分别如图1、2所示。在测区内,岩层走向 N68°E,倾向NW,倾角40°。区内有一条走向为330°的横断层通过。在侧向上有与岩层走向一致的直线不透水边界。抽水孔离不透边界约140米,而观测孔距抽水孔30.8米,如图3所示。抽水孔孔深68米,孔径250毫米。定流量 Q=3124.48米~3/日。试验期间无任何其
Our team conducted pumping tests in the Triassic (Central) limestone. The hydrogeological conditions and the geological structure of the borehole are shown in Figure 1 and Figure 2, respectively. In the survey area, the rock formation is N68 ° E with a tendency of NW and inclination of 40 °. The area has a 330 ° cross-section through. On the lateral direction, there is a straight watertight border with the formation. The pumping hole is about 140 meters away from the perimeter and the observation hole is 30.8 meters from the pumping hole, as shown in Figure 3. Hole pumping hole depth 68 meters, aperture 250 mm. Constant flow Q = 3124.48 m ~ 3 / day. During the test without any of them