3) Depressurized mining
卸压开采
1.
The research situation of depressurized mining and existence problem for medium-thick ore-body;
中厚矿体卸压开采技术研究现状及存在的问题
5) unloading by hole drilling
开孔卸载
1.
The paper discusses essence of unloading by hole drilling in underground roadway,Starting from the theory of axle change and better stress distribution in surrounding rock by unloading,we have given a preliminary method for determining parameter of unloading.
本文论述了巷道开孔应力卸载的实质，以轴变论和开孔卸载后使巷道围岩达到较好的受力状态为出发点，初步提出了确定开孔卸载参数的方法，并通过有限元数值计算，验证了这一方法。
6) excavation and unloading
开挖卸荷
1.
Once considering the excavation and unloading process of rock mass,we can simulate the displacement field and stress field of rule slope resulted in excavation and unloading.
只有考虑岩体开挖卸荷过程才能较真实地模拟实际边坡因开挖而达到的位移场和应力场状态。
补充资料：冲击波超压与动压