东非大裂谷区地裂缝成因及铁路路基防治技术

Causes of Ground Fissures in the Great Rift Valley of East Africa and the Prevention and Control Technology of Railway Subgrade

东非大裂谷地裂缝为活动性构造。通过地质调绘、钻探、挖探、综合物探等勘察手段,选取内马铁路DK76+819.50~+933.80段典型地裂缝工点,研究东非大裂谷地裂缝的成因;在此基础上,分析地裂缝下的路基破坏特点,提出地裂缝防治措施。

The ground fissures in the Great Rift Valley of East Africa are active structures.By means of geological mapping,drilling,excavation and comprehensive geophysical prospecting,select the typical ground fissure construction sites of the section DK76+819.50~+933.80 of the Nairobi—Malaba Railway to study the causes of ground fissures in the Great Rift Valley of East Africa;On this basis,the characteristics of subgrade damage under the ground fissures are analyzed,and the prevention measures for ground fissures are proposed.