动力扰动下深部出矿巷道围岩的变形特征

doi:10.11872/j.issn.1005-2518.2019.02.232

Abstract

Abstract:

When deep rock mass is in a complex geological and mechanical environment, factors such as high stress and blasting disturbance usually affect the stability of surrounding rock in deep roadway directly.At present,the research analysis to deformation characteristics of surrounding rock in deep mine roadway is still inadequate,especially the actual destruction of roadway surrounding rock.So it is significant to study deformation characteristics of surrounding rock under dynamic disturbance, which can provide theoretical reference for supporting deep roadway surrounding rock.Through the investigation and analysis of engineering geological conditions of Dongguashan copper mine and occurrence conditions of No.Ⅰ orebody, the study on deformation regularity of roadway surrounding rock under static and dynamic load was conducted, and the numerical model is established according to the mining scheme.Therefore,taking the mine roadway of Dongguashan copper mine in the downhole 900 m deep as the research object,FLAC^3D numerical simulation software was used to analyze the deformation characteristics of surrounding rock in the mining roadway, which based on the stopping scheme of the stage drilling block caving about “one charge one by one”.At first, the static and dynamic mechanical parameters of marble, skarn, serpentine, siltstone were measured through the indoor rock mechanics test, then the static and dynamic parameters of rock mass were obtained based on the generalized hoek-brown criterion. That is also to say, the simulated mechanical parameters of rock mass were obtained by reduced triaxial compression and frequent impact perturbation test data.After the establishment of the numerical calculation model, the Mohr-Coulomb model was used for static excavation analysis, and the dynamic disturbance impact simulation analysis was carried out with the Strain-Softening model, both of them were used to analyze the stress evolution and displacement evolution in roof and floor of roadway as well as both sides of surrounding rock.At last, the accuracy of the numerical simulation results was analyzed based on the actual failure of surrounding rock in the deep excavation of Dongguashan copper mine.The results show that the static and dynamic softening parameters of deep rock mass are obtained by reduction,based on test data of triaxial compression and frequent disturbance,which can be used as the basic parameters of numerical simulation analysis.What’s more, stress unloading occurred around the roadway, tensile stress appeared on the roof, while the stress on the floor was relatively small.The stress dispersion of the roadway side near the stope is greater than other side, and the change trend of stress isn’t obvious during dynamic disturbance.With the proceeding of excavation, the displacement increment of the roadway roof and the side roadway near the stope is larger than the side roadway deviated from the stope.At the same time, the roadway floor appears stable period, that is, the displacement does not change.Combined with the actual failure situation of surrounding rock in deep mining roadway, it can be speculated that roadway roof and the side roadway near the stope are prone to damage.As a result,the support should be strengthened and the rest parts are relatively stable.

Key words: deep mining, dynamic disturbance, mining method, numerical simulation, ore-drawing roadway, deformation characteristics

CLC Number:

TU856

Chun WANG,Cheng WANG,Zuqiang XIONG,Luping CHENG,Huaibin WANG. Deformation Characteristics of the Surrounding Rock in Deep Mining Roadway Under Dynamic Disturbance[J].Gold Science and Technology, 2019, 27(2): 232-240.

Figures/Tables 10

Fig.1

Fig.2

Table 1

Table 2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

References 22

1	温颖远，牟宗龙，易恩兵，等.动力扰动下不同硬度煤层巷道围岩响应特征研究[J].采矿与安全工程学报，2013，30（4）：555-559．
	WenYingyuan，MuZonglong，YiEnbing，et al.The response features of roadway surrounding rock in different hardness coal seams under dynamic disturbance[J]．Journal of Mining and Safety Engineering，2013，30（4）：555-559．
2	李夕兵，廖九波，赵国彦，等.动力扰动下高应力巷道围岩动态响应规律[J].科技导报，2012，30（22）：48-54．
	LiXibing，LiaoJiubo，ZhaoGuoyan，et al.Dynamic response of surrounding rock in highly-stressed tunnel under dynamic disturbance[J].Science and Technology Review，2012，30（22）：48-54．
3	吕文玉，孟宪锐.冲击矿压及岩石巷道卸压爆破影响参数研究[J].中国矿业，2009，18（2）：72-73，85．
	WenyuLü，MengXianrui.Research on the impulsion pressure and influence parameters of distress blasts in rock roadway[J]. China Mining Magazine，2009，18（2）：72-73，85．
4	谭海文，吴仲雄，马瑞军.岩体节理裂隙对巷道掘进爆破影响的研究与实践[J].金属矿山，2007，37（5）：42-45.
	TanHaiwen，WuZhongxiong，MaRuijun.Research on effect of rock mass joints and fissures on blasting in tunneling and its practice[J].Metal Mine，2007，37（5）：42-45．
5	王春，唐礼忠，程露萍，等.一维静载与频繁扰动共同作用下含铜蛇纹岩动力学特性[J].振动与冲击，2016，35（9）：219-226．
	WangChun，TangLizhong，ChengLuping，et al. Dynamic characteristics of copper-bearing serpentine under combined action of one-dimensional static load and frequent disturbance[J]. Journal of Vibration and Shock，2016，35（9）：219-226．
6	唐礼忠，王春，程露萍，等.一维静载及循环冲击共同作用下矽卡岩力学特性试验研究[J].中南大学学报(自然科学版)，2015，46（10）：3898-3906．
	TangLizhong, WangChun, ChengLuping，et al.Experimental study of mechanical characteristics of skarn under one-dimensional coupled static and cyclic impact loads[J].Journal of Central South University (Science and Technology) ，2015，46（10）：3898-3906．
7	李夕兵，周子龙，叶州元，等.岩石动静组合加载力学特性研究[J].岩石力学与工程学报，2008，27（7）：1387-1395．
	LiXibing，ZhouZilong，YeZhouyuan，et al.Study of rock mechanical characteristics under coupled static and dynamic loads[J].Chinese Journal of Rock Mechanics and Engineering，2008，27（7）：1387-1395．
8	李夕兵，宫凤强，ZhaoJ，等.一维动静组合加载下岩石冲击破坏试验研究[J].岩石力学与工程学报，2010，29（2）：251-260．
	LiXibing，GongFengqiang，ZhaoJ，et al.Test study of impact failure of rock subjected to one-dimensional coupled static and dynamic loads[J].Chinese Journal of Rock Mechanics and Engineering，2010，29（2）：251-260．
9	闫长斌，徐国元，李夕兵.爆破震动对采空区稳定性影响的FLAC^3D分析[J].岩石力学与工程学报，2005，24（16）：2894-2899．
	YanChangbin，XuGuoyuan，LiXibing.Stability analysis of mined-out areas influenced by blasting vibration with FLAC^3D[J].Chinese Journal of Rock Mechanics and Engineering，2005，24（16）：2894-2899．
10	尚振华，唐绍辉，焦文宇，等.基于 FLAC^3D模拟的大规模采空区破坏概率研究[J].岩土力学，2014，35（增2）：3000-3006．
	ShangZhenhua，TangShaohui，JiaoWenyu，et al.Failure probability of goaf in large-scale based on simulation of FLAC^3D[J].Rock and Soil Mechanics，2014，35（Supp.2）：3000-3006．
11	吴启红，唐佳，杨有莲.某矿山多层采空区群稳定性的 FLAC^3D数值分析[J].矿冶工程，2011，31（6）：13-20．
	WuQihong，TangJia，YangYoulian.FLAC^3D -based numerical analysis for stability of multilayer goafs in a mine[J].Mining and Metallurgical Engineering，2011，31（6）：13-20．
12	朱万成，左宇军，尚世明，等.动态扰动触发深部巷道发生失稳破裂的数值模拟[J].岩石力学与工程学报，2007，26（5）：915-921．
	ZhuWancheng，ZuoYujun，ShangShiming，et al.Numerical simulation of instable failure of deep rock tunnel triggered by dynamic disturbance[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26（5）：915-921．
13	唐春安，李连崇，李常文，等.岩土工程稳定性分析 RFPA 强度折减法[J].岩石力学与工程学报，2006，25（8）：1522-1530．
	TangChun’an，LiLianchong，LiChangwen，et al.RFPA strength reduction method for stability analysis of geotechnical engineering[J].Chinese Journal of Rock Mechanics and Engineering，2006，25（8）：1522-1530．
14	龙源，冯长根，徐全军，等.爆破地震波在岩石介质中传播特性与数值计算研究[J].工程爆破，2000，6（3）：1-7．
	LongYuan，FengChanggen，XuQuanjun，et al.Study on propagation characteristics of blasting seismic waves in a rock medium and numerical calculation[J].Engineering Blasting，2000，6（3）：1-7．
15	李占金，杨美宏，孙文诚，等.基于FLAC^3D的深部大规模开采围岩稳定性分析[J].矿业研究与开发，2017，37（6）：90-93．
	LiZhanjin，YangMeihong，SunWencheng，et al.Stability analysis of surrounding rock under deep and large-scale mining based on FLAC^3D[J].Mining Research and Development，2017，37（6）：90-93．
16	林慧立，石永奎.深部构造复杂区大断面硐室群围岩稳定性模拟分析[J].煤炭学报，2011，36（10）：1619-1623．
	LinHuili，ShiYongkui.Simulation on stability of surrounding rock of large section chambers in deep structural complex areas[J].Journal of China Coal Society，2011，36（10）：1619-1623．
17	孙红月，尚岳全，张春生.大型地下洞室围岩稳定性数值模拟分析[J].浙江大学学报（工学版），2004，38（1）：70-73．
	SunHongyue，ShangYuequan，ZhangChunsheng.Numerical modeling analysis for surrounding rockmass stability of large underground cavities[J].Journal of Zhejiang University（Engineering Science），2004，38（1）：70-73．
18	常聚才，谢广祥.深部巷道围岩力学特征及其稳定性控制[J].煤炭学报，2009，34（7）：881-886．
	ChangJucai，XieGuangxiang.Mechanical characteristics and stability control of rock roadway surrounding rock in deep mine[J].Journal of China Coal Society，2009，34（7）：881-886．
19	唐礼忠，高龙华，王春，等.动力扰动下含软弱夹层巷道围岩稳定性数值分析[J].采矿与安全工程学报，2016，33（1）：63-69．
	TangLizhong，GaoLonghua，WangChun，et al.Numerical analysis of stability of roadway surrounding rock with weak interlayer under dynamic disturbance[J].Journal of Mining and Safety Engineering，2016，33（1）：63-69．
20	肖猛，丁德馨，莫勇刚.软岩巷道围岩稳定性的 FLAC^3D数值模拟研究[J].矿业研究与开发，2007，27（1）：73-75．
	XiaoMeng，DingDexin，MoYonggang.Numerical simulation of surrounding rock stability of soft rock roadway based on FLAC^3D[J].Mining Research and Development，2007，27（1）：73-75．
21	孙书伟，林杭，任连伟.FLAC ^3D在岩土工程中的应用[M].北京：中国水利水电出版社，2011：63-95．
	SunShuwei，LinHang，RenLianwei.Application of FLAC^3D in Geotechnical Engineering[M].Beijing：China Water and Power Press，2011：63-95．
22	武建力.冬瓜山铜矿频繁爆破开采下围岩变形与破坏机理研究[D].长沙：中南大学，2014：25-30．
	WuJianli.Study on the Deformation and Failure Mechanism of Dongguashan Copper Mine’s Surrounding Rock Under Frequent Vibrations[D].Changsha：Central South University，2014：25-30．

Related Articles 15

[1]	Shuliang WU,Shan YANG,Wengang HUANG. Research on Mining Method Optimization Based on Concept Lattice Rough Set [J]. Gold Science and Technology, 2019, 27(2): 181-188.
[2]	Chuanfeng FANG,Jinmiao WANG,Shanbing LI,Mingtao JIA. Numerical Simulation Research of Natural Caving Method Based on PFC2D-DFN [J]. Gold Science and Technology, 2019, 27(2): 189-198.
[3]	Xiang LI,Zhen HUAI,Xibing LI,Zhuoyao ZHANG. Study on Fracture Characteristics and Mechanical Properties of Brittle Rock Based on Crack Propagation Model [J]. Gold Science and Technology, 2019, 27(1): 41-51.
[4]	Shixing YANG,Yuhua FU,Fei ZHAN. Study on Post Peak Damage Evolution of Tailings Filling Body by Confining Pressure and Slurry Concentration [J]. Gold Science and Technology, 2019, 27(1): 97-104.
[5]	Chong CHEN,Xibing LI,Fan FENG. Numerical Study on Damage Zones of the Induced Roadway Surrounding Rock [J]. Gold Science and Technology, 2018, 26(6): 771-779.
[6]	Liansheng LIU,Qingliang ZHONG,Lei YAN,Wen ZHONG,Longhua LIANG. Measurement of Sound Waves to Study Cumulative Damage Effect on Saturated Rock Under Frequent Production Blast Loading [J]. Gold Science and Technology, 2018, 26(6): 750-760.
[7]	Bo PENG. Numerical Simulation Study of Seepage Stability of Mudstone Slope with Dif-ferent Rainfall Types Coupled with Sudden Drop of Reservoir Water Level [J]. Gold Science and Technology, 2018, 26(5): 647-655.
[8]	Guang LI,Fengshan MA,Gang LIU,Jie GUO,Huigao GUO,Yongyuan KOU. Study on Supporting Parametric Optimizing Design and Evaluate Supporting Effect of Deep Roadway in Jinchuan Mine [J]. Gold Science and Technology, 2018, 26(5): 605-614.
[9]	Jianhua HU,Qifan REN,Zhonghua QI,Jiwei ZHANG. Regress Optimize Model of Limit Exposure Area to Stope in Wohushan Iron Mine [J]. Gold Science and Technology, 2018, 26(4): 503-510.
[10]	HU Guiying, LIU Kewei, DU Xin, LI Xiaohan. Research on Smooth-cutting Method and Its Application in Tunnel Excavation [J]. Gold Science and Technology, 2018, 26(3): 349-356.
[11]	WANG Weihua, DAI Yiwen, LI Kun, TANG Xiu, LIU Tian. Development and Application of Mining Methods Optimization Assistant Sys-tem Based on Fuzzy-AHP [J]. Gold Science and Technology, 2018, 26(3): 312-317.
[12]	WANG Haibo, WEI Guoli, ZONG Qi, XU Ying. Numerical Simulation and Application Research on Joint Development Rock Roadway Blasting Excavation [J]. Gold Science and Technology, 2018, 26(3): 342-348.
[13]	LU Furan, CHEN Jianhong. Rockburst Prediction Method Based on AHP and Entropy Weight TOPSIS Model [J]. Gold Science and Technology, 2018, 26(3): 365-371.
[14]	HU Huarui, LI Xudong, CHEN Qingfa, GAO Feihong. Revised Classification Table of Underground Mining Method for Metallic Ore Deposits [J]. Gold Science and Technology, 2018, 26(3): 387-394.
[15]	YANG Mingcai, SHENG Jianlong, YE Zuyang, DONG Shu. Analysis of Sensitivity Factors of Open-pit Mine Slope Stability and Impact Based on FlAC3D [J]. Gold Science and Technology, 2018, 26(2): 179-186.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

Comments

Recommended 0

No Suggested Reading articles found!

岩性	c_d/MPa	φ_d/(°)	抗拉强度/MPa	抗压强度/MPa	变形模量/GPa
大理岩	2.45	33.66	0.24	4.91	8.45
矽卡岩	4.91	44.98	0.05	5.92	13.92
蛇纹岩	4.70	37.02	0.62	12.17	6.59
粉砂岩	3.29	26.94	2.37	11.17	13.85

岩性	冲击扰动次数n/次	抗压强度/MPa	变形模量/GPa	泊松比	c_d/MPa	φ_d/(°)	τ_d/MPa	G_d/GPa	γ_d/ε
矽卡岩	0	22.29	153.16	0.27	7.30	19.86	15.35	60.30	2.55E-04
	5	21.80	127.89	0.27	7.14	19.78	14.98	50.35	2.98E-04
	10	20.53	112.50	0.27	6.74	19.56	14.04	44.29	3.17E-04
	15	18.49	83.11	0.27	6.10	19.17	12.53	32.72	3.83E-04
	20	15.66	69.86	0.27	5.21	18.53	10.46	27.50	3.90E-04
	25	12.02	64.33	0.27	3.99	16.84	7.63	25.33	4.01E-04
蛇纹岩	0	14.98	103.34	0.24	4.97	18.65	10.03	41.67	2.41E-04
	5	14.69	81.90	0.24	4.88	18.57	9.82	33.03	2.97E-04
	10	13.69	67.08	0.24	4.58	18.27	9.10	27.05	3.36E-04
	15	13.00	57.00	0.24	4.38	18.05	8.61	22.98	3.75E-04
	20	10.28	50.65	0.24	3.56	17.02	6.70	20.42	3.98E-04

Deformation Characteristics of the Surrounding Rock in Deep Mining Roadway Under Dynamic Disturbance

RichHTML

PDF (PC)