【摘要】 针对传统阀控式液压岩石力学试验机结构和控制较为复杂的问题，为方便快速而准确的获取岩石力学参数，开发了基于数字液压缸式岩石力学动载试验机装置。以数字液压缸式岩石力学动载试验机为研究对象，利用AMESim建立数字液压缸的仿真模型，针对活塞的运行速度进行了研究，仿真结果表明：在200 kN、400 kN和1 800 kN的负载作用下，活塞的运动速度稳定，活塞速度不受负载变化影响。研发物理样机进行试验研究，分别对直径50 mm的标准试样进行冲击试验，试样材料为花岗岩、煤和砂岩3种材料，施加5 mm/s、15 mm/s和25 mm/s 3种冲击速度的加载冲击试验，花岗岩、煤和砂岩的最大压溃力(峰值力)分别为1 781 kN、172 kN和391 kN,但冲击过程试验机冲击速度不受负载大小影响，实现了大载荷恒速冲击试验。更多还原

【Abstract】 In response to the complexity of the structure and control of traditional valve-controlled hydraulic rock mechanics test machines, a device based on a digital hydraulic cylinder rock mechanics dynamic test machine has been developed to facilitate the rapid and accurate acquisition of rock mechanics parameters.Taking the digital hydraulic cylinder rock mechanics dynamic load test machine as the research object, a simulation model of the digital hydraulic cylinder is established using AMESim. The study focuses on the operation speed of the piston, and the simulation results show that under loads of 200 kN, 400 kN and 1 800 kN, the motion speed of the piston remains stable and is not affected by load variations. A physical prototype is developed for experimental research, and impact tests are conducted on standard samples with a diameter of 50mm. The sample materials include granite, coal and sandstone. Loading impact tests are performed at three impact velocities: 5 mm/s, 15 mm/s and 25 mm/s. The maximum crushing force(peak force) of granite, coal and sandstone are 1 781 kN, 172 kN and 391 kN, respectively. The impact velocity of the test machine during the impact process is not affected by the magnitude of the load, thus achieving high-load constant-speed impact testing.更多还原