新型缩管式恒阻大变形锚索动静力学特性及工程应用研究

doi:10.13722/j.cnki.jrme.2022.1304

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Abstract The problem of large deformation of surrounding rock induced by high stresses in the deep stratum poses a great challenge to engineering safety. The typical rock cable would be damaged readily due to its inability to react to the massive deformation of surrounding rock. A new type of steel pipe shrinkable energy-absorbing cable (SPS Cable) was developed based on the principle of steel pipe extrusion and deformation. The SPS Cable fully utilizes the plastic extrusion and deformation characteristics of metal materials and has the advantages of stable resistance，high controllability and good energy absorption effect. The new cable?s dynamic and static mechanical characteristics were investigated by cable tensile testing system and dynamic drop testing system. The test results show that：(1) the SPS Cable can provide a constant working resistance of 367 kN under static conditions，and the maximum allowable deformation can reach 694 mm；(2) When resisting impact loads，the SPS Cable has good energy absorption ability，the buffer force remains stable，and the maximum energy absorption in a single impact can reach 103 kJ. The results reveal that the SPS Cable can offer high support resistance while allowing large deformation. It is very easy to install，and does not interfere with site development. The SPS Cable provided a new solution to deep engineering?s large deformation problems.

Key words： rock mechanics steel pipe shrinkable energy-absorbing cable dynamic and static mechanical characteristics constant resistance allowable deformation field test

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	Articles by authors
	WU Xuezhen1
	YE Qing1
	DENG Tao1
	ZHENG Hanfang1
	WANG Gang2
	JIANG Yujing1
	3

Cite this article:

WU Xuezhen1,YE Qing1,DENG Tao1, et al. Dynamic and static mechanical characteristics and engineering application of a novel steel pipe shrinkable energy-absorbing cable[J]. , 2023, 42(12): 2888-2897.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.1304 OR https://rockmech.whrsm.ac.cn/EN/Y2023/V42/I12/2888

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