为了研究动载荷(图1微震压实α)、微震撞击压实б)和震击同时压实B))条件下型砂紧实性准则,采用了专用的试验台。在微震压实 a)时,装有型砂的砂箱完成简单的谐震动;在微震撞击压实б)时,出现由限制器7引起的撞击载荷;按图1B)紧实时,依靠压头8的惯性力实现压实。震击同时压实的紧实装置特点是:在工作台周期升起时,运动的压实部分对工作台卸载,而在震实过程中,压 In order to study the dynamic load (Figure 1 microseismic compaction α), microseismic impact compaction б) and shock while compaction B)) compacted sand compaction criteria, the use of a dedicated test rig. In the microseismic compaction a), the sand box fitted with sand to complete a simple harmonic vibration; microseismic impact compaction б), the impact caused by the limiter 7; according to Figure 1B) tight, relying on the pressure head 8 The inertia force to achieve compaction. Shock at the same time compaction compaction device is characterized by: the rise in the stage cycle, the movement of the compaction part of the unloading table, and in the shock process, the pressure