CAJ | 학술논문

为保障含夹矸厚煤层综放沿空巷道的稳定性，确保工作面的安全高效开采，采用数值模拟分析了不同夹矸条件下沿空巷道围岩的应力分布、塑性区分布以及巷道围岩的位移。研究表明：夹矸的存在破坏了巷道围岩的连续性，使得围岩稳定性较差；厚层夹矸条件下，巷道围岩较稳定；当夹矸硬度与煤层硬度相近以及夹矸位于巷道顶部时，巷道围岩稳定性相对较好。在此基础上，提出了合理围岩控制技术，确定选用锚网索配合梯形钢带联合支护的方式，并提出了合理的支护参数；通过工程实践2验证了含夹矸厚煤层沿空巷道围岩控制技术的合理性，确保了工作面的安全高效生产。
위보장함협안후매층종방연공항도적은정성，학보공작면적안전고효개채，채용수치모의분석료불동협안조건하연공항도위암적응력분포、소성구분포이급항도위암적위이。연구표명：협안적존재파배료항도위암적련속성，사득위암은정성교차；후층협안조건하，항도위암교은정；당협안경도여매층경도상근이급협안위우항도정부시，항도위암은정성상대교호。재차기출상，제출료합리위암공제기술，학정선용묘망색배합제형강대연합지호적방식，병제출료합리적지호삼수；통과공정실천2험증료함협안후매층연공항도위암공제기술적합이성，학보료공작면적안전고효생산。
In order to ensure the stability of the thick coal seam with parting in gob-side entry in long-wall top coal caving, and to increase the safety and effectiveness in mining, the numerical model has been employed to analyse the stress distribution of gob-side entry, plastic strain area distribution and movement of rocks under the different conditions of dirt bands. Result of research shows that the exis-tence of band layers has destroyed the continuity of the surrounding rock, which causes the roads be-coming unstable;while in the thick layers, surrounding rocks are relatively stable. When hardness of the layers and that of coal seam are the same, and these bands lay on the top of road, the rocks surrounding the roads are also relatively stable. And on this basis, an appropriate technique of surrounding rock con-trol is proposed, in which a combination of rock bolting-wire mesh and steel rectangular shape support are chosen and the suitable parameters are identified. Engineering practice has proved the rationality of the proposed technique, ensuring the safety and effectiveness in long wall extraction.