爆破作用下冻结岩壁损伤评价的模型试验研究

doi:10.13722/j.cnki.jrme.2014.10.001

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1274 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Model test studies based on the similarity theory was conducted to solve the safety problem of frozen rock wall in the mines driving with the freezing-blasting method. The model was constructed with a ratio of 1∶15. The degree of damage of the model was evaluated by the change of the ultrasonic velocity after blasting. Three velocity sensors were placed in the slot at the top of the model，and the sensors recorded the rock vibrating velocities of the measuring spots during each blasting process. Results show that the vibrating velocity is the largest in the radical direction，medium in the axial direction and the lowest in the tangential direction. The vibration has directional difference. The damage of frozen wall exhibits an obvious cumulative effect，and the damage factors near the blasting holes are larger than those in other places. In the vertical direction，the upper end of the model is damaged most seriously. The vibration of rock satisfies Sadovski formula with the media parameter K = 57.52 and the attenuation coefficient ? = 1.74. The largest vibrating velocity is caused by the third group detonators in the differential blasting process，and the velocity of rock vibration is very different in different directions and is the largest in the radical direction，medium in the axial direction and the lowest in the tangential direction.

Key words： mining engineering blasting frozen rock vibration velocity damage model test

Received: 13 May 2014

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.10.001 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I10/1945

[1]	马芹永. 人工冻土动态力学特性研究现状及意义[J]. 岩土力学，2009，30(增1)：10-14.(MA Qinyong. Research status of dynamic properties of artificial frozen soil and its significance[J]. Rock and Soil Mechanics，2009，30(Supp.1)：10-14.(in Chinese))
[2]	马芹永，蔡美峰. 人工冻结黏土可钻性试验与分析[J]. 岩土工程学报，2003，25(5)：634-637.(MA Qinyong，CAI Meifeng. Experiment and analysis on drillability of artificially frozen clay[J]. Chinese Journal of Geotechnical Engineering，2003，25(5)：634-637.(in Chinese))
[3]	杨更社，奚家米，邵学敏，等. 冻结条件下岩石强度特性的试验[J].西安科技大学学报，2010，30(1)：14-18.(YANG Gengshe，XI Jiami，SHAO Xuemin，et al. Experimental study on rock strength properties under freezing conditions[J]. Journal of Xi?an University of Science and Technology，2010，30(1)：14-18.(in Chinese))
[4]	徐光苗，刘泉生，彭万巍，等. 低温作用下岩石基本力学性质试验研究[J]. 岩石力学与工程学报，2006，25(12)：2 502-2 508.(XU Guangmiao，LIU Quansheng，PENG Wanwei，et al. Experimental study on basic mechanical behaviors of rocks under low temperatures[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(12)： 2 502-2 508.(in Chinese))
[5]	李云鹏，王芝银. 岩石低温单轴压缩力学特性[J]. 北京科技大学学报，2011，33(6)：671-675.(LI Yunpeng，WANG Zhiyin. Uniaxial compressive mechanical properties of rock at low temperature[J]. Journal of University of Science and Technology Beijing，2011，33(6)：671-675.(in Chinese))
[6]	王大雁，马巍，常小晓，等. 模拟人工冻结凿井状态下冻土强度特性研究[J]. 冰川冻土，2002，24(2)：168-172.(WANG Dayan，MA Wei，CHANG Xiaoxiao，et al. Study on the strength characteristics of frozen soil in artificial freezing sinking[J]. Journal of Glaciology and Geocryology，2002，24(2)：168-172.(in Chinese))
[7]	LADANYI B. Creep of frozen slopes and ice-filled rock joints under temperature variation[J]. Canadian Journal of Civil Engineering，2006，33(6)：719-725. " target="_blank">
[8]	王衍森，杨志江，杨宇飞，等. 凿井期冻结井外壁的力学模型及水平极限承载力研究[J]. 采矿与安全工程学报，2009，26(3)：359-362.(WANG Yansen，YANG Zhijiang，YANG Yufei，et al. Mechanics model and ultimate horizontal bear capacity of outer shaft lining during freezing sinking[J]. Journal of Mining and Safety Engineering，2009，26(3)：359-362.(in Chinese))
[9]	王衍森，薛利兵，程建平，等. 特厚冲积层竖井井壁冻结压力的实测与分析[J]. 岩土工程学报，2009，31(2)：207-212.(WANG Yansen，XUE Libing，CHENG Jianping，et al. In-situ measurement and analysis of freezing pressure of vertical shaft lining in deep alluvium[J]. Chinese Journal of Geotechnical Engineering，2009，31(2)：207-212.(in Chinese))
[10]	郑波，张建明，常小晓，等. 广州地铁隧道冻结工程冻土力学特性试验研究[J]. 地下空间与工程学报，2007，3(5)：893-897. (ZHENG Bo，ZHANG Jianming，CHANG Xiaoxiao，et al. Mechanical properties study of artificially frozen soil in tunnel engineering of Guangzhou metro[J]. Chinese Journal of Underground Space and Engineering，2007，3(5)：893-897.(in Chinese))
[11]	林斌，汪仁和，谢星，等. 淮南矿区典型冻土的力学特性试验研究[J]. 西安科技学院学报，2003，23(4)：389-393.(LIN Bin，WANG Renhe，XIE Xing，et al. Mechanical performance study of typical frozen soil in Huainan coal mine diggings[J]. Journal of Xi?an University of Science and Technology，2003，23(4)：389-393.(in Chinese))
[12]	邵晨晨，岳丰田，张勇，等. 广州地铁联络通道冻结工程冻土力学特性试验研究[J]. 现代隧道技术，2013，50(5)：118-122.(SHAO Chenchen，YUE Fengtian，ZHANG Yong，et al. Experimental study on the mechanical behavior of artificial frozen soil in the Guangzhou metro connection passage project[J]. Modern Tunnelling Technology，2013，50(5)：118-122.(in Chinese))
[13]	崔广心. 深厚冲击层中冻结壁厚度的研究[J]. 冰川冻土，1995，17(增)：26-33.(CUI Guangxin. Study on the thickness of frozen wall in deep alluvium[J]. Journal of Glaciology and Geocryology，1995，17(Supp.)：26-33.(in Chinese)) " target="_blank">
[14]	崔广心. 深厚表土中圆筒形冻结壁和井壁的力学分析[J]. 煤炭科学技术，2008，36(10)：17-21.(CUI Guangxin. Mechanics analysis on cylinder freezing wall and mine shaft liner in deep thick overburden[J]. Coal Science and Technology，2008，36(10)：17-21.(in Chinese))
[15]	朱元林，张家懿. 冻土的弹性变形及压缩变形[J]. 冰川冻土，1982，4(3)：29-39.(ZHU Yuanlin，ZHANG Jiayi. Elastic and compressive deformation of frozen soils[J]. Journal of Glaciology and Geocryology，1982，4(3)：29-39.(in Chinese))
[16]	吴紫汪，马巍，张长庆，等. 冻结砂土的强度特性[J]. 冰川冻土，1994，16(1)：15-20.(WU Ziwang，MA Wei，ZHANG Changqing，et al. Strength characteristics of frozen sandy soil[J]. Journal of Glaciology and Geocryology，1994，16(1)：15-20.(in Chinese))
[17]	林传年，李海鹏，张俊兵，等. 静载下饱和冻结中砂的弹性模量与温度及应变率的关系[J]. 岩石力学与工程学报，2003，22(增2)： 2 700-2 702.(LIN Chuannian，LI Haipeng，ZHANG Junbing，et al. Relationship among elastic modulus，temperature and strain rate of frozen medium under static loading[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(Supp.2)：2 700-2 702.(in Chinese))
[18]	蔡美峰. 岩石力学与工程[M]. 北京：科学出版社，2002：75-115.(CAI Meifeng. Rock mechanics and engineering[M]. Beijing：Science Press，2002：75-115.(in Chinese)) " target="_blank">
[19]	中华人民共和国行业标准编写组. JGJ/T 98—2010 砌筑砂浆配合比设计规程[S]. 北京：中国建筑工业出版社，2010.(The Professional Standards Compilation Group of People?s Republic of China. JGJ/T 98—2010 Specification for mix proportion design of masonry mortar[S]. Beijing：China Architecture and Building Press，2010.(in Chinese)) " target="_blank">
[20]	马芹永. 冻土爆破性与可钻性试验及其应用[M]. 北京：科学出版社，2007：66-76.(MA Qinyong. Frozen soil blasting and drilling test and its application[M]. Beijing：Science Press，2007：66-76.(in Chinese)) " target="_blank">
[21]	单仁亮，高文蛟. 准直眼强力掏槽的方法[P]. 中国：CN101261103，2008-09-10.(SHAN Renliang，GAO Wenjiao. Method of quasi- parallel strong cutting[P]. China：CN101261103，2008-09-10.(in Chinese)) " target="_blank">