朔黄重载铁路恒山越岭段工程地质选线技术研究

Research on Engineering-geological Alignment of Shenchi-Huanghua Heavy Haul Railway in Crossing-mountain Area of Hengshan Mountain

研究目的:朔黄重载铁路恒山越岭地段山高谷深,沟壑纵横,山势陡峻,控制线路方案的不良地质现象如人为坑洞、滑坡、崩塌、岩溶等发育,研究这些控制线路走向方案的不良地质现象,提出针对性的防治对策与工程措施,供类似越岭地质铁路勘测、设计及施工参考。研究结论:越岭地段不良地质发育,线路方案受地质条件控制,研究确定重载铁路线路尽量顺直,对重大不良地质现象选线时应以绕避为主,必须通过时以查清、探明不良地质的性质、规模、危害程度为先导,然后进行多方案技术、经济比选。通过研究工作线路绕避了多处采空区、躲避了大部分危石,明显改善了此段线路及长隧道的工程地质条件和技术条件,缩短了线路长度67 212 m,节省了工程造价8 758.8万元。通过研究使铁路工程处于较好的工程地质环境中,保证了施工的顺利和运营的安全,经济效益和社会效益显著。

Research purposes： The shenchi-Huanghua Heavy Haul Railway passes through the crossing-mountain area of Hengshan Mountain with the high mountain-deep valley,interlaced gully and precipitous terrain.The research was done on the unfavorable geological conditions along the railway,such as the artificial pit and hole,landslide,collapse and karst to control them,and the corresponding measures were presented for control of them for the purpose of providing the reference to the similar works.Research conclusions：The alignment of railway was limited because of the unfavorable geological conditions in the crossing-mountain area.Based on the research,it was decided the alignment of the railway would be straight and pass by the area with the unfavorable geological conditions as much as possible.When the alignment of the railway had to pass through the area with unfavorable geological conditions,the nature,scale and harmful degree of the unfavorable geological conditions would be detected clearly at first and then the optional alignment schemes would be compared in technology and economy.Through the research,the alignment avoided several goafs and most of the dangerous rocks to much improve the engineering geological conditions and technical conditions and ensure the construction safety and the safety of railway service.In addition,the railway length was shortened by 67 212 m,with saving the construction cost of 8 758.8 million Yuan（RMB） and achieving good social and economic benefits.