Development and Application of Complementary Support Technology under the Condition of Weak and Broken Surrounding Rocks

Abstract:

The support of surrounding rock under the condition of deep mining has significant challenges due to high stress and low rock strength environment. Using the method of strengthening broken rock, reinforcing support force and releasing the mine-induced stress, this study has pointed out the complementary support technology which is based on the support using bolt-wire-shotcrete and is combined with steel arched yielding support. For the purpose of permanent support, the complementary support technology could combine the each support element and adequately take advantage of load-caring capacity of surrounding rock. The monitoring data of Xiaokang coal mine, Muchengjian coal mine and Yangquhe coal mine indicate that, for the various geological conditions, complementary support system has provided powerful support force to resist large deformation of weak and broken surrounding rock. It is proved that this type of support technology could reduce the mine-induced stress as well and has economical significance.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 3389-3398
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.3389
• Online since: May 2011
• Authors: Hong Wei Wang, Yao Dong Jiang, Jie Zhu, Xian Tao Zeng, Peng Fei Jiang, Xiao Tian Zhang
• Keywords: Complementary Technology, Mine-Induced Stress, Support Resistance, Weak-Broken Rock

References

[1] Manchao He, Heping Xie, Suping Peng, et al. Study of rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 803–2 813.(in Chinese)

[2] Yaodong Jiang, Hongwei Wang, Yixin Zhao, et al. Study of complementary supporting technology of extremely soft rock mining roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(12)：2 383–2 390.(in Chinese)

[3] Shiliang Lu, Yaodong Jiang. The control of support resistance over strata around roadway in soft rock[J]. Rock and Soil Mechanics，1998，19(1)：1–6.(in Chinese)

[4] Shiliang Lu，Yuehan Wang. Study on relationship between support with backfilling and surrounding rocks of roadway in soft strata[J]. Chinese Journal of Rock Mechanics and Engineering，1999，18(2)：180–183.(in Chinese)

[5] Yaodong Jiang，Yixin Zhao，LIU Wengang，et al. Research on floor heave of roadway in deep mining[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(7)：2 396–2 401.(in Chinese)

[6] Shihua Zhao， Ruifeng Zhao， Yaodong Jiang. Support technology of roadway affected by mining located in extra soft rock[J]. Ground Pressure and Strata Control，1999，(2)：19–21.(in Chinese)

[7] Yaodong Jiang， Wengang Liu， Yixin Zhao，et al. Study of surrounding rock stability of deep mining in Kailuan mining group[J]. Chinese Journal of Rock Mechanics and Engineering，2005, 24(11)：1 857–1 862.(in Chinese)

[8] Yaodong Jiang， Shiliang Lu. Investigation of mechanism of floor heave of roadway[J]. Journal of China Coal Society，1994，19(4)：344–350.(in Chinese)

[9] Yu Feng. Study of the supporting of soft-rock roadway in China[J]. Grount Pressure and Strata Control，1990，(2)：1–5.(in Chinese)

[10] Jianbiao Bai， Xiangyu Wang， Mingkui Jia，et al. Theory and application of supporting in deep soft roadways[J]. Chinese Journal of Geotechnical Engineering，2008，30(5)：632–634.(in Chinese)

[11] Xiaoming Sun， Jun Yang， Wufu Cao. Research on space-time action rule of bolt-net-anchor coupling support for deep gateway[J]. Chinese Journal of Rock Mechanics And Engineering，2007，26(5)：895–899.(in Chinese)

[12] Shilin Chen， Qihu Qian， Mingyang Wang. Problems of deformation and bearing capacity of rock mass around deep buried tunnels[J]. Chinese Journal of Rock Mechanics and Engineering, 2005，24(13)：2 203–2 204.(in Chinese)

[13] Lawrence W. A method for the design of long wall gateroad roof support[J]. International Journal of Rock Mechanics and Mining Sciences，2009，46(4)：789–795.

DOI: 10.1016/j.ijrmms.2008.11.012

[14] C. L. Li. Rock support design based on the concept of pressure arch[J]. International Journal of Rock Mechanics and Mining Sciences，2006，43(7)：1 083–1 090.

[15] Hongpu Kang， Jinhua Wang， Jian Lin, et al. Case studies of rock bolting in coal mine roadways[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(4)：650–664.(in Chinese)

[16] Hongpu Kang, Jinhua Wang. Rock bolting theory and complete technology for coal roadways [M]. Beijing: China Coal Industry Publishing House, 2007. (in Chinese)

[17] Hongwei Zhou， Heping Xie， Zhengliang Dong，et al. Support technique of steel fiber shotcrete for soft rock tunnel at great depth[J]. Journal of Engineering Geology，2001，9(4)：393–398.(in Chinese)

[18] Hongpu Kang， Jinhua Wang， Jian Lin. High pretensioned stress and intensive bolting system and its application to deep roadways[J]. Journal of China Coal Society，2007，32(12)：1 233- 1 238.(in Chinese)

[19] Hongpu Kang， Tieming Jiang， Fuqiang Gao. Effect of pretensioned stress to rock bolting[J]. Journal of China Coal Society，2007，32(7)：673–678.(in Chinese)

[20] Hongpu Kang. Study and application of complete rock bolting technology to coal roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(21)：3 959–3 964.(in Chinese)

[21] Nong Zhang， Mingshi Gao. High-strength and pretension bolting support of coal roadway and its application[J]. Journal of China University of Mining and Technology，2004，33(5)：524 - 527.(in Chinese)