实践表明,开采深度每增加一个步距,都在不同程度上增加矿山压力的显现强度以及巷道维护的困难。同一的矿山压力显现形式,可以出现在不同的深度和不同的地区,这除了与岩体力学性质及地质构造特点有关外,往往和岩体初始应力状态有很大关系。到目前为止,实际测量仍是获得岩体原始应力资料的唯一手段。因此,各国都很注 Practice shows that for each step of mining depth increases, to varying degrees, increasing the intensity of mine pressure and roadway maintenance difficulties. The same mine pressure manifestation can occur at different depths and in different areas, which are often related to the initial stress state of the rock mass except the mechanical properties of rocks and the geological structural features. So far, the actual measurement is still the only way to obtain the original stress data of rock mass. Therefore, all countries are very noteworthy