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2009年8月6日晚23时30分,雅安市汉源县顺河乡境内大渡河左岸猴子岩山嘴突然崩滑,堵断大渡河达4.5h,形成长十余公里的堰塞湖,使省道S306中断。8月7日作者随四川省国土资源厅组织的专家组赶赴现场进行应急调查与临灾处置。实地踏勘结合三维激光扫描成果综合分析,圈定了崩塌体残余危岩区的范围,提出了利用危岩体拉裂缝实施分步排危的方案,8日19时10分根据该排危方案成功地实施了第一爆,消除了近1万m3的危岩体(A区),为S306线新线猴子岩段的复工、老线的恢复奠定了基础。
At 23:30 on August 6, 2009, at 23:30 on the 6th of June 2009, a sudden collapse of the monkey rock mouth at the left bank of the Dadu River in Shunhe Hanyuan County, Ya’an City, blocked the Dadu River by 4.5 hours and formed a dammed lake with a length of more than 10 kilometers Provincial Highway S306 interrupted. August 7 Author with the Sichuan Provincial Department of Land and Resources organized a group of experts rushed to the scene for emergency investigation and temporary disaster disposal. Based on the comprehensive analysis of the results of field exploration and 3D laser scanning, the scope of the residual rock mass in the collapse body was delineated. The scheme of using the rock mass to crack the rock mass was put forward. At 19:10 on the 8th, The first explosion was completed, eliminating nearly 10,000 m3 of dangerous rock mass (Zone A), which laid the foundation for the resumption of work and the old line of the new section of Monkey Rock in S306 line.