CAJ | 학술논문

针对强烈动压巷道支护问题，采用理论分析与现场试验相结合的方法，分析研究了受动压影响煤柱内支承压力分布特征及其内部巷道围岩变形特征，通过对实验点的生产地质条件调查和地质力学测试和评估，发现在煤柱内掘进巷道会造成巷道围岩塑性区加大，顶板和巷道两帮出现大量的离层和裂隙，煤体胶结程度差，完整性低，巷道在掘进期间有害变形量较大，影响巷道整体支护效果，容易出现冒顶片帮等事故。提出采用强力锚杆支护系统配合高强度托板和金属网的方式进行支护。以王台铺煤矿15号煤XV13102副巷为例，介绍了强力锚杆支护系统的方案设计、现场试验和矿压监测。研究结果表明，强力锚杆支护系统改善了巷道受力状态，提高了支护系统的承载能力和完整性，达到了预期支护效果，保证了巷道的正常使用。
침대강렬동압항도지호문제，채용이론분석여현장시험상결합적방법，분석연구료수동압영향매주내지승압력분포특정급기내부항도위암변형특정，통과대실험점적생산지질조건조사화지질역학측시화평고，발현재매주내굴진항도회조성항도위암소성구가대，정판화항도량방출현대량적리층화렬극，매체효결정도차，완정성저，항도재굴진기간유해변형량교대，영향항도정체지호효과，용역출현모정편방등사고。제출채용강력묘간지호계통배합고강도탁판화금속망적방식진행지호。이왕태포매광15호매XV13102부항위례，개소료강력묘간지호계통적방안설계、현장시험화광압감측。연구결과표명，강력묘간지호계통개선료항도수력상태，제고료지호계통적승재능력화완정성，체도료예기지호효과，보증료항도적정상사용。
Applying theoretical analysis and site test , abutment pressure distribution and deformation characteristic of coal-pillar influ-enced by mining pressure was analyzed .By geological survey and mechanics test , it was found that driving in coal pillar would make plastic zone of surrounding rock increase , large separation and amounts of fissures occurred , coal cementation and integration degree was low, harmful deformation was large and influenced whole supporting effect and was easily resulted into coal -wall slide and roof fall.It was put forward that applying powerful anchored-bolt supporting system cooperated by high-strength tray and metal mesh to sup-porting.Taking XV13102 auxiliary roadway in 15th coalseam of Wangtaipu Colliery as an example , projection design of powerful an-chored-bolt supporting system , site test and underground pressure observation was introduced .Results showed that the supporting sys-tem improved stress state of roadway and improved carrying capacity and integration of supporting system , which reached expectant supporting effect.