深部软岩锚注支护巷道围岩变形机理研究

doi:10.11799/ce201801011

Abstract

Abstract: Deformation control issue of surrounding rocks of deep and soft rock roadway has been the focus and difficulty at coal mines studies. Take the track-down roadway of district D four in Pingdingshan No.8 Coal Mine as engineering background, use in-situ industrial test and numerical simulation，the paper studied the mechanism of surrounding rocks deformation and failure of roadway in two kinds of support conditions with bolt-shotcreting and bolt-grouting support. The results showed that: (1) Compared with the bolt-shotcreting, higher stress zone into shallow surrounding rock of bolt-grouting roadway is shifted to deep surrounding rocks of roadway, so that the shallow surrounding rocks area is in lower stress zone, which improves the surrounding rock stress of roadway. (2) The displacement of roadway surrounding rocks with bolt-grouting is less than that of corresponding positions of roadway surrounding rocks with bolt-shotcreting, So bolt-grouting support plays an effective role in control strata deformation of roof and floor and two sides of roadway. The authors proposed and implemented the measures of secondary grouting technology of roadway, studied grouting process and grouting parameters. After the implementation of field test, roadway deformation has been effectively controlled.

CLC Number:

TD353

0
/ / Recommend

Add to citation manager EndNote|Reference Manager|ProCite|BibTeX|RefWorks

URL: http://www.coale.com.cn/EN/10.11799/ce201801011

http://www.coale.com.cn/EN/Y2018/V50/I1/36

References

[1]李云, 韩立军, 孙昌兴, 等.大松动圈破碎围岩二次注浆加固试验研究[J].煤炭科学技术, 2012, 40(12):19-23 [2]孟庆彬, 韩立军, 乔卫国, 等.深部软岩巷道锚注支护机理数值模拟研究[J].采矿与安全工程学报, 2016, 33(1):28-34 [3]任海强, 陶广美.受动压影响巷道注浆加固技术研究[J].煤炭科学技术, 2016, 44(3):2-18 [4]杨仁树, 薛华俊, 郭东明, 等.大断面软弱煤帮巷道注浆加固支护技术[J].煤炭科学技术, 2014, 42(12):1-4 [5]刘泉声, 卢超波, 刘滨, 等.深部巷道注浆加固浆液扩散机理与应用研究[J].采矿与安全工程学报, 2014, 31(3):333-339 [6]陈跟马, 曹长江, 卢全体.大松动圈破碎围岩硐室锚架注协同支护技术[J].煤炭科学技术, 2015, 43(9):134-138 [7]翟新献, 秦龙头, 赵高杰, 等.大断面硐室顶板卸压机理及其应用技术研究[J].煤炭科学技术, 2015, 43(10):1-6 [8]牛双建, 靖洪文, 张忠宇, 等.深部软岩巷道围岩稳定控制技术研究及应用[J].煤炭学报, 2011, 36(6):914-918 [9]方新秋, 赵俊杰, 洪木银.深井破碎围岩巷道变形机理及控制研究[J].采矿与安全工程学报, 2012, 29(1):1-7 [10]黄锐, 郭琪, 马驰, 等.大变形巷道弹性锚喷混凝土耦合支护技术研究及应用[J].中国安全科学学报, 2012, 22(7):95-101 [11]康红普.深部煤矿应力分布特征及巷道围岩控制技术[J].煤炭科学技术, 2013, 41(9):12-18 [12]翁磊, 李夕兵, 刘科伟, 等.玲珑金矿松散围岩主巷变形破坏机制及支护对策[J].中国安全科学学报, 2014, 24(7):129-134 [13]许广, 唐又驰.深部软岩煤巷围岩变形分析与控制技术研究[J].中国安全科学学报, 2011, 21(2):109-114 [14] 王连国, 韩继胜, 孙求知.软岩巷道锚注支护效果的数值模拟研究[J].山东科技大学学报(自然科学版), 2001, 20(1):53-56 [15] 刘长武, 陆士良.锚注加固对岩体完整性与准岩体强度的影响[J].中国矿业大学学报, 1997, 28(3):221-224

Deformation mechanism of surrounding rocks of deep and soft rock roadway with bolt-grouting in Pingdingshan No.8 Coal Mine

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	. Study on supporting technology of 6m high mining height along goaf [J]. COAL ENGINEERING, 2019, 51(5): 78-81.
[2]	q 11. Research and Practice of Cutting Pole Protection for Narrow Coal Pillar in Thick Coal Seam Section of Changping Coal Mine [J]. COAL ENGINEERING, 2019, 51(5): 82-86.
[3]	. [J]. COAL ENGINEERING, 2019, 51(5): 92-95.
[4]	. Model test study on interaction between concrete-filled steel tube support and surrounding rock [J]. COAL ENGINEERING, 2019, 51(4): 68-73.
[5]	. Research and Application on Technology of Flexible –formwork Concrete in gob-side entry retaining automatically of no-pillar in thick coal seams [J]. COAL ENGINEERING, 2019, 51(2): 32-36.
[6]	. [J]. COAL ENGINEERING, 2019, 51(1): 35-39.
[7]	. Study on Supporting Technology of Soft Rock Roadway under High Geo-stress in Deep Mine [J]. COAL ENGINEERING, 2019, 51(1): 44-46.
[8]	. Active-passive combined support technique for large span open-off cut in thick coal seam [J]. COAL ENGINEERING, 2018, 50(12): 41-45.
[9]	. Study on Failure Mechanism and Control of High Stress and Soft Rock Roadway Support [J]. COAL ENGINEERING, 2018, 50(12): 46-49.
[10]	. Study on roadway deformation mechanism and reinforcement support technology under fault influence [J]. COAL ENGINEERING, 2018, 50(12): 50-53.
[11]	. Technology analysis and Application of fully mechanized mining face crossed abandoned shaft [J]. COAL ENGINEERING, 2018, 50(11): 14-17.
[12]	. Determination of the Parameters of Filling Wall Based on Large Span of Critical Rock Block in the Gob Side Entry Retaining [J]. COAL ENGINEERING, 2018, 50(11): 38-42.
[13]	zheng feng0. Research on Combined Supporting Technology of Coal Roadway under the Effect of Fault Structure [J]. COAL ENGINEERING, 2018, 50(11): 43-47.
[14]	. Research on roadway layout orientation and support technology of lower coal seam in very close distance coal seams [J]. COAL ENGINEERING, 2018, 50(11): 48-50.
[15]	. [J]. COAL ENGINEERING, 2018, 50(10): 14-18.