冲击诱导损伤岩石的侵入特性

doi:10.12068/j.issn.1005-3026.2017.10.027

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (10): 1501-1506.DOI: 10.12068/j.issn.1005-3026.2017.10.027

冲击诱导损伤岩石的侵入特性

娄磊，吴万荣，王送来，梁向京

(中南大学机电工程学院，湖南长沙410083)

收稿日期:2016-04-20 修回日期:2016-04-20 出版日期:2017-10-15 发布日期:2017-10-13
通讯作者: 娄磊
作者简介:娄磊(1985-)，男，河南南阳人，中南大学博士研究生; 吴万荣(1965-)，男，湖南长沙人，中南大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51175518)；高性能复杂制造国家重点实验室资助项目(zzyjkt2015-03).

Intrusive Characters of Damage Rock by Shock Disturbance

LOU Lei， WU Wan-rong， WANG Song-lai， LIANG Xiang-jing

School of Mechanical and Electrical Engineering， Central South University， Changsha 410083， China.

Received:2016-04-20 Revised:2016-04-20 Online:2017-10-15 Published:2017-10-13
Contact: LOU Lei
About author:-
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摘要/Abstract

摘要： 在硬岩矿山开采中，为了提高大孔径深孔凿岩效率，降低钻具磨损，提出了冲击诱导切削复合凿岩新工艺.在Walsh模型的基础上，建立了冲击诱导孔周围损伤岩石的裂纹模型，推导了岩石损伤区的牙轮钻齿侵入系数方程及侵入阻力方程.分析了裂纹密度、扰动频率分别对岩石弹性模量、岩石破碎体积和钻齿侵入阻力的影响.结果表明:随裂纹密度的增大，岩石的有效弹性模量减小;相同侵入载荷下，随着扰动频率的增加，钻齿的侵深和岩石破碎体积不断增加;随着冲击扰动频率的增大，牙轮钻齿侵入阻力逐渐减小.

关键词: 裂纹密度, 侵入系数, 侵入阻力, 扰动频率

Abstract: In order to improve the drilling efficiency and reduce tools wear， a new rock fragmentation method of shock disturbance was put forward. Based on the theory of Walsh， a crack model of the damage rock around the induced hole was established， the intrusive coefficient equations and intrusive resistance equations of the cone bit were deduced. The influences of crack density， the disturbance frequency on the elastic modulus， the rock crushing volume and the intrusive resistance were analyzed. Experimental results showed that the effective elastic modulus of rock decreases with the increase of crack density. Under the certain intrusion load， the depth of the penetration and the rock crushing volume increase continually with the increase of the disturbance frequency. The intrusive resistance of the cone bit decrease gradually with the increase of the disturbance frequency.

Key words: crack density, intrusion coefficient, intrusive resistance, disturbance frequency

中图分类号:

O347

娄磊，吴万荣，王送来，梁向京. 冲击诱导损伤岩石的侵入特性[J]. 东北大学学报:自然科学版, 2017, 38(10): 1501-1506.

LOU Lei， WU Wan-rong， WANG Song-lai， LIANG Xiang-jing. Intrusive Characters of Damage Rock by Shock Disturbance[J]. Journal of Northeastern University Natural Science, 2017, 38(10): 1501-1506.

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冲击诱导损伤岩石的侵入特性

Intrusive Characters of Damage Rock by Shock Disturbance

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