karst funnel

Described are the technical parameters, main performance and structure design of the covered lime hopper car manufactured of TCS345 stainless steel materials and with the 25 t axle-load.

介绍了采用TCS345不锈钢材料制造的25t轴重有盖石灰漏斗车的技术参数、主要性能和结构设计等。

Donglan allxiliary inclined shaft past through a especially big watery stratum by the well point method This paper introduces the well point method and analyses the construction parameter by using the Dupuit precipitation funnel theory.

屯兰矿副斜井利用井点降水法通过了特大含水表土层 ,并应用Dupuit降水漏斗理论对施工参数进行了计算 ,所得结果与实测数据一致。