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中文摘要：
借助于改进裂口 Hopkionson 压力酒吧(SHPB ) 与轴预先迫使并且限制压力，沙岩的实验的二个系列被执行在资源的利用的功课期间研究岩石的失败模式在深。一个人在限制压力被修理，轴的压力是可变的条件下面。其它在限制压力变得的条件下面，轴的压力被修理。轴的静态的压力什么时候是低的，被发现样品在影响以后均匀地拆散，当轴的静态的压力高时，在碎片的尺寸有大不同，并且在在动态、静态的负担的联合下面的测试以后的样品的主要身体经常显示出 V 或 X 的类型。样品在有弹性的阶段是更结束颗粒的，影响做许多裂缝被产生并且发展，作为使样品更会裂开。在损坏舞台的起始的阶段，压力使一些成为的静电干扰在不发达的样品裂开，影响的角色在有弹性的阶段类似于那。在损坏舞台的中期或后期，在样品的这些裂缝足够地发展，影响主要加速样品的失败。样品的主要身体在由于限制压力的家影响在有弹性的阶段或损坏舞台的起始的阶段制止样品的侧面的形成以后显示出 V 或 X 的类型，样品的主要身体几乎在装载静态的压力的阶段形成了，在通常影响以后的结果类似于在轴的压力测试下面的那些。
英文摘要：
By means of the improved split Hopkionson pressure bar（SHPB） with axial pre-pressure and confined pressure, two series of experiments on sandstone are carried out to research the failure mode of rock during the course of exploitation of resources in deep. One is under the conditions that the con- fining pressure is fixed and the axial pressure is changeable. The other is under the conditions that the confining pressure becomes and the axial pressure is fixed. It is found that samples break up evenly after impacting when axial static pressures are low, there is great disparity in size of fragments when axial static pressures are high, and the main bodies of samples after the tests under the combination of dy- namic and static loads frequently show the type of V or X. The samples are more close-grained at the elastic stage and impacts make many cracks be generated and developed, as makes samples more crackable. At the initial phase of damage stage, the static pressures make some cracks in the samples which are undeveloped and the impacts＇ role is similar to that at the elastic stage. At the metaphase or anaphase of damage stage, these cracks in the samples develop adequately and the impacts mainly accelerate samples＇ failure. The main bodies of samples show the type of V or X after impacting due to the confining pressures＇ restraining samples＇ lateral formation at the elastic stage or the initial phase of damage stage, the main bodies of samples have almost formed at the stage loading static pressures and the results after impacting usually are similar to those under the axial pressures tests.
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