CAJ | 학술논문

针对自然崩落法采场巷道布置密集、存在时间长、采动影响大、维护难度大等特点，采用现场调研、室内试验、理论分析、井下巷道试验与变形实测等综合手段，分析软破围岩巷道变形破坏特征和支护难点。以围压恢复加固理论为指导，提出了被动和主动联合支护体系，采用增设底梁和提高充填接顶等全封闭强化支护措施。现场实施结果表明，巷道收敛量能够控制在80 mm以内，实现了对巷道围岩变形的有效控制，维护高应力环境软破围岩巷道的稳定性，为自然崩落法采矿奠定基础。
침대자연붕락법채장항도포치밀집、존재시간장、채동영향대、유호난도대등특점，채용현장조연、실내시험、이론분석、정하항도시험여변형실측등종합수단，분석연파위암항도변형파배특정화지호난점。이위압회복가고이론위지도，제출료피동화주동연합지호체계，채용증설저량화제고충전접정등전봉폐강화지호조시。현장실시결과표명，항도수렴량능구공제재80 mm이내，실현료대항도위암변형적유효공제，유호고응력배경연파위암항도적은정성，위자연붕락법채광전정기출。
As for the problem of intense roadway layout, long time existence, large mining influence and great maintenance difficulty in the mine with natural caving mining method, a comprehensive me-thod including field investigation, laboratory test,theoretical analysis, underground roadway test and deformation measurement has been used to analyze the deformation failure characteristics and support difficulties. With the guidance of confining pressure restored reinforcement theory, the active and pas-sive combined support system of the surrounding rock is put forward, and mudsill, roof-contacted filling and other enhanced support techniques are adopted. The industrial test shows that the roadway deforma-tion can be controlled within 80 mm after support provided. This proposes support technology can ef-fectively control the surround rock deformation in soft rock roadway, which ensures the safety and fea-sibility of natural caving method in soft rock.