广西G75兰海高速K1711路段危岩防治工程

Type of project
简单挂网系统
Year
2022
Location
河池 - 广西 - 中国
Client
广西交通投资集团南宁运营公司

Challenge

2021年6月,在G75兰海高速贵州往河池方向K1711处,发生公路边坡落石侵入公路车道事故,直接威胁到道路的通行安全,最大落石约0.13m3。为了解落石具体情况,确保道路行车安全,受高速公路运营有限公司委托,我公司对该落石隐患点开展调查和处治工作。据现场初步调查,该路段为5级岩质边坡,最高边坡距路面约55m,属高位危岩体掉落。边坡共有4个集中落石区域,落石点四周均布松散风化岩,存在继续滑落隐患;落石点坡面还存在类似嵌挤石块,存在脱落隐患。

Solution

通过对地形地貌、地层岩性、地质构造及地震动参数、病害隐患区调查及分析,明确了该路段的落石病因及潜在的落石风险。病害隐患区属岩溶峰丛洼地地貌,山体侵蚀切割较强烈,大部分基岩裸露,坡度较陡,生长杂草、灌木等。坡面松动的岩体的受根劈作用的岩块在受强降雨等不利因素的影响下,有进一步掉落的风险。在保证交通正常、安全通行前提,减少施工对交通影响,采用符合防护能力的引导防护网产品。

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广西G75兰海高速K1711路段危岩防治工程

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广西G75兰海高速K1711路段危岩防治工程

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