某铜钼矿岩体崩解特性实验研究

Experimental Study on the Disintegration Characteristics of a Copper Molybdenum Ore

为研究某岩体的崩解特性,探讨其破坏机理,通过室内崩解装置,对该矿区具有代表性的围岩进行了系列耐崩解指数试验。试验表明:作为钼矿主要围岩的蚀变花岗斑岩遇水崩解性一般,作为铜矿主要围岩的蚀变角岩强烈崩解,致密的花岗斑岩具有致密、高强度特性不崩解。分析得出:蚀变花岗斑岩、蚀变角岩的吸水软化特性、易崩解特性以及其内在含有的粘土矿物和膨胀矿物是造成巷道变形破坏的主要原因。

In order to study the disintegration characteristics of a certain type of rock mass and discuss its destruction mechanism,a series of disintegration index tests were carried out on the representative surrounding rock in the mining area. Tests show that the altered granite porphyry, which is the main wall rock of the molybdenum mine, is generally disintegrable in water. The altered horn rock, the main wall rock of the copper mine, is strongly disintegrated. The dense granite porphyry has the characteristics of compactness and high strength Does not disintegrate. The analysis shows that the water absorption softening characteristics, easy disintegration characteristics of the altered granite porphyry and altered hornstone, as well as the clay minerals and swelling minerals contained in them are the main causes of the deformation and destruction of the roadway.