一、应力场问题的提出 1.工程规模大,实测应力值高(见表1); 2.在探洞、钻孔中发现了岩爆、剥皮、岩饼等现象; 3.对围岩稳定分析时,计算边界需取洞径的2—3倍,少数测点无法满足这一需要, 4.岩体应力场的求解方法和分布规律也需进行研究。 因此,岩体应力场的研究,是大型地下电站建设需要提出的课题。 First, the proposed stress field problems 1 project scale, the measured stress value is high (see Table 1); 2 in the caving, drilling found in the rock burst, peeling, rock cake phenomenon; 3 on the stability of the surrounding rock Analysis, the calculation of the border to take 2-3 times the diameter of the hole, a few measuring points can not meet this need, 4. Rock mass stress solution and distribution of the law also needs to be studied. Therefore, the study of rock mass stress field is a subject that needs to be raised for the construction of large-scale underground power station.