风化岩层 meaning in English

weathered rock formation

Partially weathered rock
局部风化岩层
The ground base of the newly added chute in 4 tailings reservoir at dexing copper mine is characterised by thick weathered layer , loose structure , fractured zone and landslip mass accumulation . as a result , the ground has a great subsidence and inefficient carrying capacity . in view of this , the grouting technology was adopted to reinforce the chute ground base . the on - site testing shows that the subsidence of the chute has been efficiently controlled and the carrying capacity of the ground base improved so that the stability requirement has been met
潘洛铁矿主要使用的采矿方法是浅眼落矿的全面法和留矿全面法. 23矿体160m以上矿段上部为氧化矿和风化岩层,形成挤压爆破和松散岩石覆盖下的放矿条件.介绍了无底柱分段崩落法在该矿体开采中的应用.实际使用获得的各项技术经济指标还比较理想