煤矿开采沉陷有效控制新途径的探讨VIP免费

煤矿开采沉陷有效控制新途径的探讨 戈海宾 李德海 赵洪宝 （河南理工大学资源与材料工程学院 河南焦作 454003）[摘要] 开采沉陷是造成矿区环境地质灾害的直接根源，有效控制和减轻地面沉陷程度是减轻或避免开采沉陷环境灾害的根本之路。针对这一问题，分析了充填开采，条带开采，覆岩离层注浆岩层控制技术和“采－注－采”三步法开采的优缺点，在此基础上提出了“条带开采－注浆充填固结采空区－跳采剩余条带”的新三步法开采沉陷控制的新思路，并比较其优缺点。初步分析表明，采用新三步法可以更好实现对岩层移动和地表沉陷的有效控制，地表下沉系数可控制在 0..20 以内，煤炭采出率可达到 70％～80％，可大幅度减轻对环境的破坏。[关键词] 开采沉陷 沉陷控制 地表移动Research of A New Method for Ground Subsidence Control in Coal Mining GE Hai-bin, LI De-hai ( Institute of Resource and Material, Henan Polytechnic University, Jiaozuo 454003, China)[Abstract] Mining subsidence is a direct source of environmental geological disaster in coal mine ． To control or lighten the degree of mining subsidence is the basic way of reducing or avoiding the environmental disaster caused by underground mining ． Advantages and disadvantages of mining with stowing, grouting in bed-separation of overburden ,mining in strips for ground subsidence control and “mining-stowing-mining” are analyzed ．A new method for ground subsidence control of new 3-step mining, stripping mining-goaf grouting, and filling-strip pillar discontinuously mining is advanced ． The feasibility studies of the method were carried out．The result shows that the mining subsidence can be controlled effectively using the new 3-step mining．The final ground subsidence factor can be controlled in 0.25．The coal recovery will be 70%~80%．It can greatly decrease the destruction to the environment．[Key words] mining subsidence；subsidence control；ground movement1开采沉陷对环境的危害资源的大规模...