摘要
京珠高速公路粤境小塘至甘塘段20m以上高度的煤系地层路堑边坡共计11处。岩层以全—强风化层为主,厚度20～40m,其物理力学性质大大降低,边坡可能发生平面破坏和圆弧破坏等2种破坏模式。部分地下水水质中SO2-4含量大于200mg l,具有强烈的硫酸盐侵蚀性。边坡防治对策应在详细勘察工程地质、水文地质的基础上,合理选用设置山坡截水沟、平台截水沟、泄水洞、边坡渗沟、排水仰孔等防、排水措施,减少地表水渗入坡体,疏干边坡表层地下水。
There are 11 artificial slopes above 20m high in the coal measure strata along XiaotangGantang section of BeijingZhuhai expressway. The strata of slopes are all overstrong weathered, 20～40m in thickness, and are of lower physical mechanical strength. The slopes failures have two models: plane failure and curve failure. In some of the strata, SO2-4 of groundwater that is strong corrosive is above 200mg/l. Slopes control countermeasures, such as drainage ditches, terrace drainage ditches, flooddischarge caves, discharge hole of elevation etc., should be properly designed on the basis of hydrogeology and engineering geology investigation to decrease water infiltration and dewater shallow ground water.
出处
《水文地质工程地质》
CAS
CSCD
2003年第5期86-88,共3页
Hydrogeology & Engineering Geology
