采矿与安全工程学报 ›› 2016, Vol. 33 ›› Issue (1): 7-11.

• 论文 • 上一篇    下一篇

高应力大变形巷道让压锚索支护技术及装置研制

  

  1. 1.新疆大学地质与矿业工程学院,新疆 乌鲁木齐 830046;2.中国矿业大学矿业工程学院,深部煤炭资源 开采教育部重点实验室,江苏 徐州 221116;3.永城煤电控股集团有限公司,河南 永城 476600
  • 收稿日期:2014-03-25 出版日期:2016-01-15 发布日期:2016-03-01
  • 作者简介:高明仕(1970—),男,甘肃省靖远县人,教授,博士(后),博士生导师,从事巷道围岩控制、深部巷道冲击矿压灾害防治方面的研究。
  • 基金资助:

    国家自然科学基金项目(51564044);天山学者项目(TSS20150105);江苏省“青蓝工程”项目;江苏高校优势学科建设工程项目

Support technology and device development of yield cables for the high stress and large deformation roadway

  • Received:2014-03-25 Online:2016-01-15 Published:2016-03-01

摘要: 深部巷道围岩的高应力、大变形特点,要求支护系统具备高强让压的特性。让压装置的变形强度为锚索强度的屈服极限,当锚索承载力达到或接近其屈服极限时让压装置先屈服收缩,产生一定的位移量,释放部分高应力,避免锚索过早超载而提前破坏,实现巷道支护系统的完好性。采用MTS815电液伺服岩石力学性能实验系统, 进行了不同规格让压装置单轴压缩力学性能试验,选定了 3种不同规格的让压装置,分别配套 Φ15.24 mm,Φ17.8 mm,Φ18.9 mm这 3 种不同规格和强度的锚索支护系统。工程实践表明,该支护技术和新型让压装置的研制成功,有效保护了锚网支护系统的完好性,提高了深部巷道围岩的支护质量和支护水平。

关键词: 深部巷道, 让压锚索, 屈服变形, 产品研制, 性能试验, 工程实践

Abstract: Due to high stress and large deformation of deep roadway surrounding rock,the support system must have high-strength yielding characteristics. Deformation strength of yield device is equal to the limit of cable yield strength. So when the bearing capacity of cable goes up to or approaches the limit of yield strength, the yield device will respond firstly with yield strength reduction and displacement, and will release some energy, which makes it possible to avoid premature failure of over-load and keep surrounding rock of roadway long-term steady and to maintain its integrity. Simultaneously,the experiments to test mechanical property parameters of various yield devices have been done by using Rock Mechanics Test System MTS815. 3 types of yield devices for cables respectively match with cable support system in certain diameter (Φ15.24 mm,Φ17.8 mm,Φ18.9 mm) and strength. Engineering practice has shown that this support technology and success of new product development can protect the integrity of bolting mesh system effectively, and improve the quality and level of support for surround- ing rock of deep roadway.

Key words: deep roadway, yield cable, yield deformation, product development, property testing, engineering practice