库区移民城镇弃碴堆积体稳定性评价及其防护设计

以库区移民城市巴东县城黄家大沟拟建弃碴堆积体为例,针对该场地的工程地质、水文地质条件以及回填堆积体岩土特性,推测出弃碴堆积体可能的破坏模式。在此基础上,采用不平衡推力法对弃碴堆积体的稳定性进行评价,借用水电堆石坝设计原则,采用明渠、挡墙、碾压以及格构等综合防护措施保证弃碴堆积体的稳定性。该弃碴堆积体物质来源为滑坡防治工程的废弃物,因此,弃碴堆积体的设计为库区移民城镇的规划和环保开辟了一种新的思路、途径,因而具有重要的社会效益和经济效益。

STABILITY ASSESSMENT AND PROTECTION DESIGN FOR THE ROCK FILLING OF DUMPING SITE IN EMIGRATORY CITY OF THE RESERVIOR REGION

This paper selects the dumping site of the HuangJia ravine (to be built) as a case,which is a rock filling in Badong county that is an emigratory city of the reservoir region. Considering the engineering geological condition, hydrological geological and the characteristics of the rock filling slope, the possible damage mode of the rock filling after filling is speculated .On that basis, the un-equilibrium pushing method is used to calculate the stability of rock filling slope.Consulting the principles of rockfill dam in hydropower engineering, the comprehensive protection measures are adopted to ensure the stability of the rock filling which includes canal、revetment、rolling and supporting structure .The source of materials in the dumping site come from the waste of landslide prevention program.So,the protection design for the rock filling is a new method and approach for urban planning and environmental protection in the emigratory towns of reservoir region. It also has an important social and economic benefit.