阿尔塔什水利枢纽工程高边坡危岩体治理方案

Treatment Scheme of Danger Rock Mass in High Slope at Aertash Water Conservancy Project

针对阿尔塔什水利工程坝址右岸边坡存在的危岩体方量大、分散度高和边坡高陡的问题,结合地勘资料,从危岩体失稳破坏模式分析入手,以危岩分布特征、失稳模式、失稳后果为准则对右岸危岩体群进行了分区,为后期施工方案的确定提供了依据。在施工过程中,采用索道方式进行材料和设备的运输,克服了施工道路难以布置的难题。同时,采用深孔爆破和浅孔爆破相结合的方式进行危岩体爆破清除,在大量爆破试验的基础上确定了适合的爆破参数,危岩体处理工程提前2.5个月完工,相关实践可为类似工程提供有益的参考。

Aiming to the problems of big quantity, high dispersion, high and steep slope of danger rock mass on the right bank dam site of Aretash Water Conservancy Project and combining with integrated geological data, this paper starts with the analysis of instable failure mode of danger rock mass and divides danger rock mass groups on the right bank according to the distribution characteristics, failure modes and failure consequences of danger rock mass, which provides a basis for the determination of later construction schemes. During construction, the ropeway is used to transport materials and equipment, which overcomes the difficulty of the construction road layout. At the same time, deep-hole blasting and shallow-hole blasting are combined used to remove danger rock mass. On the basis of a large number of blasting tests, appropriate blasting parameters are determined. The danger rock mass treatment work is completed 2.5 months ahead of schedule so that relevant practice can provide useful reference for similar projects.