摘要
通过对风沙地区多个典型路段的调查，风沙流速是风沙地区道路损害的主要原因。对零路基及0．6，1，1．7，2．5m等不同高度的路基进行填土高度的风沙流风洞试验，根据试验数据并进行统计分析得出：流动沙丘区路基合理高度宜在1．0～2．0m；半固定沙丘区由于沙源比流动沙丘区的少，所以合理路基高度应在0．5～1．0m；固定沙丘区由于植被丰富，沙源少，对公路积沙的危害不大，合理路基高度应在0～0．5m。
In accordance with the data investigation in numerous typical road sections in the sand region, the sand flow rate is the main reason for road damages in the sand region. Then through the sand flow test on different roadbed filling heights including 0 m high, 0.6 m high, 1 m high, 1.7 m high and 2. 5 m high road beds, the author deduces the reasonable roadbed filling height in the sand region. According to the roadbed height proposed according to the analysis of wind velocity flow field, the active sand dune zone should be kept between 1.0-2.0 m; Since the semi-fixed dune zone has fewer sand sources than those at the active sand dune zone, the reasonable roadbed height should be suggested between 0.5-1.0 m; seeing that the fixed dune zone has richer vegetal covers, fewer sand sources, and thus does less harm to sand settlement at highway, then the reasonable roadbed height should be suggested between 0-0.5 m.
出处
《青岛大学学报（工程技术版）》
CAS
2006年第2期90-93,共4页
Journal of Qingdao University(Engineering & Technology Edition)
关键词
风沙流
路基填土高度
风速流场
sand flow
roadbed filling height
wind velocity flow field
