1 物控及凿井概况偃师市某厂位于洛河古道并部边缘、邙岭的南则。上部由冲积、肃积形成的第四系粘土及富水砂砾石层组成,厚约150～180m,下伏二叠系砂页岩。厂区内外曾凿井5眼,深度均的130m以内,出水量均于30t/h。针对当地的具体条件,我们采用电阴率法在厂内选定井位一个。从定井点ρ_s曲线(图1)上看出基岩埋深为170m,AB/2于90～180m区间,对应的ρ_s值渐增,推断该段由富水砂层、砾石层及粘土组成。这说明以往所钻水井出水量较小是由于误将 A physical control and sinking overview Yanshi City, a factory located in the Luohe Road and the Ministry of the edge of the ridge south of the rule. The upper part is composed of Quaternary clay and water-rich sand and gravel which are formed by alluvial and superconducting sediments and have a thickness of about 150-180 m and underlying Permian sand shale. 5 wells have been drilled inside and outside the plant, within a depth of 130m, the amount of water are 30t / h. For the specific conditions of the locality, we adopt the method of electronegative ratio to choose a well location in the factory. From the well point ρ_s curve (Figure 1), we can see that the bedrock depth is 170m and the area of ​​AB / 2 is 90 ~ 180m. The corresponding value of ρ_s gradually increases. It is inferred that the section is composed of water-rich sand, gravel and clay . This shows that the amount of water drilled wells in the past is due to misleading