vertical line locus method 铅垂线轨迹法
Taking the cross cave propping in Hanguguan Tunnel of passengers special line on Zhengxi railway, this paper introduces a new construction technique of propping - vertical propping method.
文章以郑西铁路客运专线函谷关隧道横洞挑顶为例，介绍了一种新型挑顶施工工艺——垂直挑顶法。
Two strata cutting methods were suggested, the grid cutting method to be used for horizontal and sloped sections, and the intersection line cutting method for vertical sections.
提出了地层的任意方向切割方法，即适用于水平截面和斜截面的网格分割法和适用于竖直截面的交线分割法。
Recently, resistivity method with vertical line source has been used to study the distribution of injection water and remain oil.
利用套管供电，通过地表观测视电阻率研究油田注水分布和剩余油分布近来在油田开发中得到了应用。
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