丰山铜矿的地应力测量与分布特征

采用应力解除法，在丰山铜矿-50 m和-100 m中段进行了6个点的三维应力测试，获得了6个测点的三维地应力资料。结果表明：矿体南缘应力值较大，最大主应力在15 MPa左右，北缘应力值较小，最大主应力在8.0 MPa左右；矿区地应力随地形起伏而变化，明显受地形地貌控制，同时岩体自重和构造作用是形成地应力的主要因素，二者在不同区域所产生的影响也不同，在南区以构造应力为主，深部地区以自重为主。为该矿的生产和巷道支护设计提供了可靠依据

Geo-stress Measurement and Distribution Characteristics of Fengshan Copper Deposit

A three-dimensional stress testing was conduced at 6 points at -50 m and -100 m levels of Fengshan copper deposit by stress relief method, obtaining the 3D geo-stress data of the 6 measuring points.The results indicate that the geo-stress in the south is larger, with the biggest principal stress being about 15 MPa; and that in the north is smaller, with the biggest principal stress being about 8.0 MPa.The geo-stress in the mining area changes along with the topographic relief, and is obviously controlled by topography and geomorphology.The deadweight of the rock-mass and the tectonism are the main factors forming the geo-stress, and they have different effects on the different areas, with the south area mainly affected by tectonic stress, and the deep area mainly by deadweight.The results provide a reliable basis for the production and tunnel support design of Fengshan Copper Mine.