基于回转切削的岩石力学参数获取新思路

发布时间：2018-01-05 02:24

本文关键词：基于回转切削的岩石力学参数获取新思路　出处：《岩石力学与工程学报》2015年02期 　论文类型：期刊论文

【摘要】：基于回转钻探和静力触探试验的综合优势,开发并进行系统地旋进式触探试验,在室内试验和理论推导的基础上进一步验证。从旋进式触探机制入手,根据切削、静压及钻压作用过程建立旋进式触探试验参数钻压、扭矩与每转进给量之间的关系曲线,结合室内试验成果进而以曲线斜率和钻削理论为依托推导出岩石的抗压强度、弹性模量、内摩擦角及黏聚力的计算公式。以粉煤灰砌块旋进式触探试验成果为例,按上述方法计算试样4大基本力学参数,与试验实测值进行验证。结果表明计算值与室内实测的基本力学参数值比较接近,论证了该方法的可行性和后续研究的可期待性。
[Abstract]:Based on the comprehensive advantages of rotary drilling and static penetration test, a systematic ground rotary penetration test is developed and carried out, which is further verified on the basis of laboratory test and theoretical derivation. According to the process of cutting, static pressure and drilling pressure, the relationship curve between drilling pressure, torque and feed rate of rotary penetration test is established. Based on the results of laboratory tests, the compressive strength and elastic modulus of rock are derived based on curve slope and drilling theory. Calculation formula of internal friction angle and cohesive force. Taking the results of rotary penetration test of fly ash block as an example, the four basic mechanical parameters of sample 4 are calculated according to the above method. The results show that the calculated values are close to the measured values of basic mechanical parameters, and the feasibility of the method and the expectation of further research are demonstrated.
【作者单位】：西安理工大学岩土工程研究所;石河子大学水利建筑工程学院;
【基金】：国家自然科学基金资助项目(50879068) 国家自然基金委创新团体基金资助项目(40821001)
【分类号】：TU452
【正文快照】： 1引言当前大量岩土工程实践表明,边坡工程的超高、强地震烈度、高水头和深埋长大地下工程的超长、超埋深、高地应力等特点,是国内外工程领域的主要难点所在。而能否及时准确地探测断层、软弱破碎带、突水、岩爆等不良地质现象的位置,以及分析它们对工程安全施工的影响,进而提

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