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以新超煤矿90101回风顺槽沿空留巷为工程背景,研究厚煤层坚硬顶板沿空留巷围岩稳定的问题,提出围岩控制的原理和技术:高预应力、适应沿空留巷大变形的巷内基本支护和高支撑阻力、可控制沿空留巷顶底板剧烈变形的巷内加强支护的巷内支护体系;高强度、快速增阻、可缩性好的巷旁充填体,良好的充填区域顶板维护和坚硬顶板的强制放顶卸压的巷旁支护体系。
Based on the project of gob-side entry retaining with 90101 air return slot in Xinchao coal mine, the stability of surrounding rock in gob-side entry retaining of thick coal seam is researched. The principle and technology of surrounding rock control are put forward: high prestressing, Large deformation of the lane of the basic support and high support resistance, can control the gob-side entry severe deformation of the laneway to strengthen the support within the laneway support system; high strength, rapid resistance, narrow laneside Filling body, a good filling area of the roof maintenance and roof forced roof pressure relief roadside support system.