前言海蒙特矿(Highmont)位于不列颠哥伦比亚省距坎卢普斯(Kamloops)西南约50km 的高原谷的朗根(Longan)湖附近。斑岩铜矿和辉钼矿矿体的开采始于1980年。在1983年5月,当东矿坑的开采延伸到约60m 深度时,在采坑的东南角开始产生一个破坏(称南东破坏)。开采到110m 深度以后,伴随着50～100万m~3边坡岩石频繁且大 Introduction The Highmont is located near the Longan Lake in the British Columbia Plateau, about 50 km southwest of Kamloops. Porphyry copper and molybdenite ore mining began in 1980. In May 1983, when the mining of the East Mine pit extended to a depth of about 60 m, a sabotage started to occur at the southeast corner of the pit (called the South East destruction). After mining to a depth of 110m, rocks with 50 to 1 million m 3 slope are frequent and large