Based on the analyse and evaluation of some destroyed models of bedded rock and massive rock and cataclastic rock,which is in the high-level road in the mountainous area,and combined with the engineering examples,the author put forward synthetic preventing measures,emphasized on the discussing on new methods,planting grass and anchor-shotcrete.

On the monitor experience of the deep foundation pit support of the Hua-du Commercial Center in Guangzhou,the paper has probed the constructing quality of the foundation pit of deep agitation keg and anchoring-shotcreting net.

Polypropylene fiber concrete has many unique engineering properties than normal concrete for tunnel lining in water conservancy engineering with high techno-economics effect and easy construction compared with hang net shotcrete.

This article takes high side slope control project of two noth high cutting slopes between K35-K36 on the Jitai expressway as example and introduces the engineering practice of prestressed anchorage cable hanging net sprayed concrete supporting and retainting structure on controlling the dangerous rock and landslid.