【作者】 龙芝辉； 汪志明； 魏建光； 朱杰然；

【Author】 Long Zhi-hui Wang Zhi-ming Wei Jian-guang Zhu Jie-ran (Petroleum University, Beijing 102249, China,

【机构】 石油大学；

【摘要】 提出了射流作用下岩石局部范围具有较高渗流压力的思想,并认为该渗流压力大小对射流破岩有重要影响,建立了该渗流压力的计算模型,通过在地面条件下,射流作用于湿砂岩体的多因素数值计算与分析,得出喷嘴出口喷速、喷射距离、射流作用时间等对射流作用下渗流压力的影响规律,这对认识高压射流作用对多孔介质孔隙压力的影响及高压射流的破岩机理有重要意义。更多还原

【Abstract】 In this paper, a ideal is presented, which there is a larger pressure of percolation flow in a part of rock by a high -pressure jet, and the pressure has very effect on the rock fragmentation with jet A model of calculating the pressure was established. The model was used to calculate and analyze the influence on the wet sandstone by several factors in ordinarily condition. Some conclusions are important for understanding the rock fragmentation mechanism with jet and the effect of a high-pressure jet in drilling.更多还原