CAJ | 학술논문

弓长岭井下矿－280m中段采场地压显现剧烈，高强度的金属拱架支护无法阻止地压的破坏，支护后巷道多处发生塌冒和钢筋变形失稳现象，严重地影响了矿山的正常生产。现场调查得出，巷道破坏形式分为三种：沿结构面拉伸破坏、沿结构面剪切破坏和片帮冒顶破坏。分析了巷道变形破坏的两个原因：矿体中存在多条横断层，岩体强度降低；绿泥岩节理裂隙发育，强度较低。揭示了金属拱架支护与破碎软岩复杂化变形的不适应性，论述了锚杆支护形式在井下矿的发展变革及实用性。在此基础上，提出适合巷道破坏特点的喷锚网支护形式，并给出参数。实践表明，喷锚网支护方式能够很好地解决弓长岭井下矿采准巷道破坏的问题，达到控制采场地压的目的。
궁장령정하광－280m중단채장지압현현극렬，고강도적금속공가지호무법조지지압적파배，지호후항도다처발생탑모화강근변형실은현상，엄중지영향료광산적정상생산。현장조사득출，항도파배형식분위삼충：연결구면랍신파배、연결구면전절파배화편방모정파배。분석료항도변형파배적량개원인：광체중존재다조횡단층，암체강도강저；록니암절리렬극발육，강도교저。게시료금속공가지호여파쇄연암복잡화변형적불괄응성，논술료묘간지호형식재정하광적발전변혁급실용성。재차기출상，제출괄합항도파배특점적분묘망지호형식，병급출삼수。실천표명，분묘망지호방식능구흔호지해결궁장령정하광채준항도파배적문제，체도공제채장지압적목적。
The ground pressure occurs violently in - 280m middle section of Gongchangling underground mine and high‐strength metal arch supporting cannot prevent the destruction of ground pressure along with collapse and deformed rebar which seriously affected the normal production of mine . Field investigation shows roadway damage is divided into three kinds :structural plan tensile damage , structural plane shear failure and roof‐fall damage .This paper analyzes two reasons for deformation of roadway :many cross faults exist in ore body with the decrease of the strength of the rock mass ;chlorite schist develops with joint fissure and low intensity .This paper reveals that metal arch support is not suitable for complexity deformation of soft rock and discusses the development and practicality of bolt support .On this basis ,this paper puts forward spray the anchor net supporting which is suitable for the damage of roadway and parameters .Practice shows that spray the anchor net supporting can commendably solve the problem of roadway damage to achieve the goal of controlling the ground pressure .