深井高地压软岩新型树脂锚固剂全长锚固支护技术.pdf

2014年12月
中国矿山工程
第43卷第6期
China Mine Engineering
·43
工程建设?煤矿
深井高地压软岩新型树脂锚固剂
全长错固支护技术
Full length anchor supporting technology of using new resin anchoring
agent in deep well with high pressure and soft rock
张五一(淮南矿业集团谢一矿,安徽准南232052)
摘要:煤矿锚杆支护技术是煤炭开采的一项关键技术。随着矿井产量和效率不断提高,淮南矿区锚杆支护率已达到90%以
上。针对淮南矿区深部复杂地质条件,米用高预应力、强力笛杆支护及锚和锚索联合支护技术,从顶板比較稳定的煤巷,到
复合、破碎的顶板巻道;从实体牒巷,到高应力、高地压的沿空掘巷,到稳定及松软的岩港等,实现一次支护有效控制围岩变形
与破坏,避免巷道多次维修。特别是锚杄全长锚国支护技术成功应用,解决了软岩、松散破碎巷道的支护技术问题,能更好地
发挥岩层与铺杆杆体共同抗剪切作用,抑制围岩离层与错动,充分发挥锚固岩体的自承能力。初步解决了深并高地压复杂地
质条件下的巷道快速掘进、快速支护技术难题,为矿井、工作面实现高产高效创造了条件。
关键词:深井;高地压;软岩;新型树脂锚固剂;全长固
Abstract Bolting is a key technology in coal mining. More than 90% roadway support in Huainan Coal Mine uses bolting support with
the development of mine eapacity and efficiency. In view of the complex geological conditions of Huainan mining area, high prestressing
force, strengthening bolting and bolt and cable anchor combined support technology were used in the roadway support with stable or
broken roof; the solid coal road or the roadway driving along goaf with high stress and pressure; the stable and soft tunnel. It achieved
the effeetive control of surrounding rock deformation and damage, avoided many times maintenance of roadway. Especially, the
successful application of full length anchoring technology solved the problems in soft and broken roadway support, and it can develo
the shear effect of rock and anchor, control the separation and Mlow of surrounding rock, and it gave full play to the bearing capacit
bolted rock. Preliminarily it solved the technical problems in fast driving and support in deep well with high pressure and complicated
geological conditions. It created favorable conditions for mine realizing high production and efficiency
Key words: deep well; high ground pressure; soft rock; new resin anchoring agent; full length anchoring
(0
1前言
随着矿井开采深度的增加,深部巷道岩逐渐呈现
文章编号:
出软岩变形特点,巷道岩在高应力的作用下进入软岩
1672-609X(2014)06-0043-03
岩性状态,岩石的蠕变速度、蠕变时间都在增大。特別在
中图分类号:TD353
采动影响的情况下,巷道周围的岩体承受的垂直应力越
文献标志码:B
来越大,矿山压力显现强烈,巷道周边岩体出现了明显的
收稿日期:2014-~03-20
塑性破坏和变形,固岩变形运动越来越强烈。为适应综
作者简介:张五一(1971-),男
合机械化开采,同时尽可能提高回收率,需加大巷道断面
淮南矿业集团谢一矿进副总工
及跨度,减小工作面之间的煤柱尺寸,使巷道的支护愈加
程师,从事矿井现场安全生产技
困难,后期维修工作量极大,经济效詮受到影响。特别是
术管理工作。
在复合顶板、破碎带、集中应力区等复杂地质条件下,深
部煤岩巷锚杄支护面临着支护困难、变形量大等较多的
技术难题。
传统锚杄端锚支护理论必须锚固到顶板坚硬稳定岩