软弱破碎围岩压实–固结二次成岩机制试验研究

doi:10.13722/j.cnki.jrme.2018.0185

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1254 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为研究软弱破碎围岩二次成岩机制，采用自制压实装置对二次成岩影响因素和成岩后的力学行为进行试验研究。结果表明：软弱破碎围岩二次成岩过程可分为压实破碎和固结二次成岩2个阶段，偏芯挤压和对芯挤压是压实破碎阶段主要的2种力学机制，自胶结和粗粒块间黏结是固结二次成岩阶段的主要成岩机制。提出采用破断指数和固结指数分别表征岩块破断难易程度和固结二次成岩程度。统计结果表明岩样粒径越大，不规则系数越大，越难以压实成型。二次成岩受含水率影响，粒径＜1 mm的岩粉其含水率需达到4.76%以上才能压实成型。二次成岩试件单轴抗压强度随粒径增大而线性减小，具有细粒试件类岩性，粗粒试件类塑性，应力加载波动性等力学性质。二次成岩试件的三轴抗压强度随含水率呈三次多项式增长，随压实应力线性增长，以及随岩样粒径呈三次多项式减小。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王平1
	2
	3
	4
	余伟健2
	3
	冯涛2
	3
	朱永建2
	3
	黄钟3
	任恒3
	赵训3

关键词 ：岩石力学, 二次成岩, 破断指数, 固结指数, 力学性质

Abstract：To study the mechanism of secondary diagenesis of the weak and broken rock，the compaction device developed in-house was used to investigate the factors affecting the secondary diagenesis and the mechanical behavior of the specimen after diagenesis. The results show that the secondary diagenesis process has a compaction-broken stage and a consolidation diagenesis stage. The eccentric core extrusion and the core extrusion are two main mechanisms at the compaction-broken stage，whereas，the self-cementation and the bonding among coarse blocks are the main diagenesis mechanisms at the consolidation stage. The breakage and consolidation indexes were proposed to characterize the level of difficulty in rock breaking and the degree of the consolidation diagenesis respectively. The statistical results show that，for the rock with large size，the large irregularity coefficients result in greater difficulty in compaction. In addition，the secondary diagenesis is affected by the water content. The compaction of the rock powder with the particle size smaller than 1 mm can be fulfilled when the water content is higher than 4.76%. The uniaxial compressive strength of secondary diagenetic specimens decreases linearly with the increasing in particle size. The triaxial compressive strength of the secondary diagenetic specimen increases with the water content in a relationship of cubic polynomial，increases linearly with the compaction stress but decreases with the increasing of particle size in a cubic polynomial manner.

Key words： rock mechanics secondary diagenesis breaking index consolidation index mechanical properties

引用本文:

王平1，2，3，4，余伟健2，3，冯涛2，3，朱永建2，3，黄钟3，任恒3，赵训3. 软弱破碎围岩压实–固结二次成岩机制试验研究[J]. 岩石力学与工程学报, 2018, 37(8): 1884-1895.
WANG Ping1，2，3，4，YU Weijian2，3，FENG Tao2，3，ZHU Yongjian2，3，HUANG Zhong3，REN Heng3，ZHAO Xun3. Experimental study on second diagenesis by compaction and consolidation of soft and broken rock. , 2018, 37(8): 1884-1895.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2018.0185 或 http://www.rockmech.org/CN/Y2018/V37/I8/1884

[2]	缪协兴，茅献彪，胡光伟，等. 岩石(煤)的碎胀与压实特性研究[J].实验力学，1997，12(3)：394-400.(MIAO Xiexing，MAO Xianbiao，HU Guangwei，et al. Research on broken expand and press solid characteristics of rocks and coals[J]. Journal of Experimental Mechanics，1997，12(3)：394-400.(in Chinese))
[4]	苏承东，顾明，唐旭，等.煤层顶板破碎岩块压实特征的试验研究[J]. 岩石力学与工程学报，2012，31(1)：18-26.(SU Chengdong，GU Ming，TANG Xu，et al. Experiment study of compaction characteristics of crushed stones from coal seam roof[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(1)：18-26.(in Chinese))
[5]	曹树刚，张适，李国栋，等. 散体矸石的承载性能试验研究[J]. 地下空间与工程学报，2016，12(5)：1 164-1 171.(CAO Shugang，ZHANG Shi，LI Guodong，et al. Experimental study on the bearing properties of granular gangue[J]. Chinese Journal of Underground Space and Engineering，2016，12(5)：1 164-1 171.(in Chinese))
[8]	陈晓祥，苏承东，唐旭，等. 饱水对煤层顶板破碎压实特征影响的试验研究[J]. 岩石力学与工程学报，2014，33(增1)：3 318-3 326. (CHEN Xiaoxiang，SU Chengdong，TANG Xu，et al. Experimental study of effect of water-saturated state on compaction property of crushed stone from coal seam roof[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(Supp.1)：3 318-3 326.(in Chinese))
[10]	姜振泉，季良军，左如松. 煤矸石的破碎压密作用机制研究[J]. 中国矿业大学学报，2001，30(2)：139-142.(JIANG Zhenquan，JI Liangjun，ZUO Rusong. Research on mechanism of crushing compression of coal waste[J]. Journal of China University of Mining and Technology，2001，30(2)：139-142.(in Chinese))
[12]	张德辉，李辉. 连续级配矸石压缩特性的试验研究[J]. 辽宁工程技术大学学报：自然科学版，2011，30(3)：337-340.(ZHANG Dehui，LI Hui. Experimental study on compression performance of continuous grading gangue[J]. Journal of Liaoning Technical University：Natural Science，2011，30(3)：337-340.(in Chinese))
[14]	张俊英，王金庄. 破碎岩块的碎胀与压实特性实验研究[C]// 开采沉陷与“三下”采煤学术会议. [S. l.]：[s. n.]，2005：30-32.(ZHANG Junying，WANG Jinzhuang. Experimental study on the crushing and compaction characteristics of broken rock blocks[C]// Mining Subsidence and the Academic Conference of “three Under” Coal Mining. [S. l.]：[s. n.]，2005：30-32.(in Chinese))
[1]	赵和松. 再生顶板的结构形式及其顶板控制[J]. 煤炭科学技术，1993，(5)：2-5.(ZHAO Hesong. Constitution and control of regenerated roof[J]. Coal Science and Technology，1993，(5)：2-5.(in Chinese))
[3]	张振南，茅献彪，葛修润. 松散岩块侧限压缩模量的试验研究[J]. 岩石力学与工程学报，2004，23(18)：3 049-3 054.(ZHANG Zhennan，MAO Xianbiao，GE Xiurun. Testing study on compressive modulus of loose rock blocks under confining constraint[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(18)：3 049-3 054.(in Chinese))
[6]	马占国，兰天，潘银光，等.饱和破碎泥岩蠕变过程中孔隙率变化规律的试验研究[J]. 岩石力学与工程学报，2009，28(7)：1 447-1 454.(MA Zhanguo，LAN Tian，PAN Yinguang，et al. Experimental study on variation law of saturated broken mudstone porosity during creep process[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(7)：1 447-1 454.(in Chinese))
[11]	王文，李化敏，熊祖强，等. 粒径级配对矸石压实变形特性影响研究[J]. 地下空间与工程学报，2016，12(6)：1 553-1 694.(WANG Wen，LI Huamin，XIONG Zuqiang，et al. Research on the influence of diameter gradation on compressive deformation characteristics of gangues[J]. Chinese Journal of Underground Space and Engineering，2016，12(6)：1 553-1 694.(in Chinese))
[13]	冯梅梅，吴疆宇，陈占清，等. 连续级配饱和破碎岩块压实特性试验研究[J]. 煤炭学报，2016，41(9)：2 195-2 202.(FENG Meimei，WU Jiangyu，CHEN Zhanqing，et al. Experimental study on the compaction of saturated broken rock of continuous gradation[J]. Journal of China Coal Society，2016，41(9)：2 195-2 202. (in Chinese))
[15]	EVDOKIMOV P D，ADAMOVICH A N，FRADKIN L P，et al. Shear strengths of fissures in ledge rock before and after grouting[J]. Hydrotechnical Construction，1970，4(3)：229-233.
[7]	陈占清，李顺才，茅献彪，等. 饱和含水石灰岩散体蠕变过程中孔隙度变化规律的试验[J]. 煤炭学报，2006，31(1)：26-30.(CHEN Zhanqing，LI Shuncai，MAO Xianbiao，et al. Experiment on the porosity changing of water-saturated granular limestone during its creep[J]. Journal of China Coal Society，2006，31(1)：26-30.(in Chinese))
[9]	钱自卫，曹丽文，姜振泉，等. 煤矸石侧限加载-浸水-卸载实验研究[J]. 采矿与安全工程学报，2013，30(4)：578-582.(QIAN Ziwei，CAO Liwen，JIANG Zhenquan，et al. Experimental study on confined loading-water immersion-unloading of coal gangue[J]. Journal of Mining and Safety Engineering，2013，30(4)：578-582.(in Chinese))
[16]	韩立军，宗义江，韩贵雷，等. 岩石结构面注浆加固抗剪特性试验研究[J]. 岩土力学，2011，32(9)：2 570-2 577.(HAN Lijun，ZONG Yijiang，HAN Guilei，et al. Study of shear properties of rock structural plane by grouting reinforcement[J]. Rock and Soil Mechanics，2011，32(9)：2 570-2 577.(in Chinese))
[17]	SWEDENBORG S，DAHLSTRÖM L O. Rock mechanics effects of cement grouting in hard rock asses[C]// Proceedings of the 2003 Specialty Conference on Grouting at the Third International Conference on Grouting and Ground Treatment，New Orleans，Grouting and Ground Treatment. [S. l.]：[s. n.]， 2003：1 089-1 102.
[19]	雷进生，刘非，王乾峰，等. 非均质土层的注浆扩散特性与加固力学行为研究[J]. 岩土工程学报，2015，37(12)：2 245-2 253.(LEI Jinsheng，LIU Fei，WANG Qianfeng，et al. Diffusion characteristics and reinforcement mechanics of grouting in non-homogeneous soil strata[J]. Chinese Journal of Geotechnical Engineering，2015，37(12)：2 245-2 253.(in Chinese))
[18]	李召峰，李术才，刘人太，等. 富水破碎岩体注浆加固实验与机制研究[J]. 岩石力学与工程学报，2017，36(1)：200-207.(LI Zhaofeng，LI Shucai，LIU Rentai，et al. Grouting reinforcement experiment for water-rich broken rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(1)：200-207.(in Chinese))
[21]	许宏发，耿汉生，李朝甫，等. 破碎岩体注浆加固体强度估计[J]. 岩土工程学报，2013，35(11)：2 018-2 022.(XU Hongfa，GENG Hansheng，LI Caofu，et al. Estimating strength of grouting reinforced bodies in broken rock mass[J]. Chinese Journal of Geotechnical Engineering，2013，35(11)：2 018-2 022.(in Chinese))
[23]	张吉雄，缪协兴，郭广礼. 矸石(固体废物)直接充填采煤技术发展现状[J]. 采矿与安全工程学报，2009，26(4)：395-401.(ZHANG Jixiong，MIAO Xiexing，GUO Guangli. Development status of backfilling technology using raw waste in coal mining [J]. Journal of Mining and Safety Engineering，2009，26(4)：395-401.(in Chinese))
[25]	周健，张艳伟，周韵鸿，等. 考虑粒间法向接触力作用的粗粒土颗粒破碎试验研究[J]. 岩土工程学报，2017，39(9)：1 565-1 574. (ZHOU Jian，ZHANG Yanwei，ZHOU Yunhong，et al. Experimental study on particle breakage of coarse-grained soil considering normal contact force[J]. Chinese Journal of Geotechnical Engineering，2017，39(9)：1 565-1 574.(in Chinese))
[20]	宗义江，韩立军，韩贵雷. 破裂岩体承压注浆加固力学特性试验研究[J]. 采矿与安全工程学报，2013，30(4)：483-488.(ZONG Yijiang，HAN Lijun，HAN Guilei. Mechanical characteristics of confined grouting reinforcement for cracked rock mass[J]. Journal of Mining and Safety Engineering，2013，30(4)：483-488.(in Chinese))
[22]	余伟健，王卫军. 矸石充填整体置换“三下”煤柱引起的岩层移动与二次稳定理论[J]. 岩石力学与工程学报，2011，30(1)：105-112.(YU Weijian，WANG Weijun. Strata movement induced by coal-pillar under three circumstances exchanged by gangue backfill and quadratic stability law[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(1)：105-112.(in Chinese))
[24]	孙利辉，纪洪广，蒋华，等.弱胶结地层条件下跨落带岩层破碎冒落特征与压实变形规律试验研究[J]. 煤炭学报，2017，42(10)：2 565-2 572.(SUN Lihui，JI Hongguang，JIANG Hua，et al. Experimental study on characteristics of broken caving and regularity of compaction deformation of rocks in caving zone in the weakly cemented strata[J]. Journal of China Coal Society，2017，42(10)：2 565-2 572.(in Chinese))