本文關鍵詞： 巖石力學 巖爆模擬 沖擊地壓 氣液復合 高速密封 加載裝置　出處：《巖石力學與工程學報》2014年S1期 　論文類型：期刊論文

【摘要】：介紹一種新型巖爆模擬專用氣液復合快速補償加載器的設計原理和技術特征。該加載器采用獨特的4腔室氣液聯(lián)合設計,利用蓄能腔壓縮氣體絕熱膨脹來快速補償試樣破壞時加載器的壓力突降,使試樣發(fā)生模擬巖爆。試驗表明,加載器具有整體剛度高、操控性好、高速密封穩(wěn)定可靠等特點,解決了回程腔背壓消除,防止氣體往液壓缸泄露,高速導向密封關鍵問題,能夠較好地實現(xiàn)單軸加載條件下試樣不同烈度等級的巖爆過程模擬。另外,分析探討加載器下一步應深入研究和解決的一些問題。
[Abstract]:This paper introduces the design principle and technical features of a new gas-liquid composite fast compensation loader for rock burst simulation, which adopts a unique gas-liquid combination design with four cavities. The compression gas adiabatic expansion of the storage chamber is used to quickly compensate for the sudden drop of the pressure of the loader when the specimen is destroyed, which results in the simulated rockburst of the specimen. The test results show that the loading apparatus has high overall stiffness and good maneuverability. The characteristics of high speed seal, such as stable and reliable, solve the key problem of high speed guide seal, such as eliminating back pressure of return chamber, preventing gas from leaking to hydraulic cylinder. The simulation of rock burst process with different intensities of specimens under uniaxial loading conditions can be realized well. In addition, some problems that should be studied and solved in the next step of loaders are analyzed and discussed.
【作者單位】： 總參工程兵科研三所;哈爾濱工業(yè)大學機電學院;
【分類號】：TU45
【正文快照】： 1引言巖爆是一種在高地應力地區(qū)地下工程洞室開挖過程中,硬脆性圍巖內聚積的彈性變形能因開挖擾動在一定條件下的突然猛烈釋放現(xiàn)象,主要表現(xiàn)為大范圍的巖體突然破壞和破裂產生的動力拋擲,并伴有不同程度的爆炸、撕裂聲,圍巖釋放的大量能量,嚴重的巖爆甚至能將數(shù)以噸計的巖塊和，

本文編號：1458577