某国DY高铁坎儿井勘察方法研究

Study on Prospecting Method for Karez along DY High-speed Railway in a Country

坎儿井是开发利用地下水的一种很古老的水平集水建筑物,形成历史久远。由于地表后期改造大,部分坎儿井地表痕迹已消失、坍塌或掩埋,勘察难度大;若坎儿井的分布情况和暗渠埋深及大小没有查明,将会造成设计有误,对施工及后期铁路运营影响大。为此,以新建DY高铁穿越坎儿井地区的勘察为对象,研究提出坎儿井地区的勘察方法,从而查明:沿线有98处坎儿井与新建路线相交;暗渠埋深多为2.0~40.0 m;暗渠大小多为0.5~2.0 m不等。针对沿线坎儿井特征,提出了设计处理方案。

Karez,as a kind of ancient structure for horizontal catchment by exploitation and utilization of groundwater,was created ages ago and,due to great late reformation of the surface,the trace of some Karez on the ground surface has been already disappeared,collapsed or buried.If the distribution of Karez,the depth and size of underground channel were not be investigated clearly,there would have errors in design and the construction and railway operation would be impacted greatly.Therefore,based on investigation in the Karez area where the newly built DY high-speed railway passes through,the prospecting method for Karez area was proposed by analysis,and it was found that,along the line,there were 98 sites of Karez penetrating this newly built railway,and most underground channels were buried 2.0 m to 40.0 m in deep with the size from 0.5 m to 2.0 m.The design treatment scheme is put forward according to the characteristics of karez along the line.