CAJ | 학술논문

为了解决厚硬覆岩下沿空留巷侧向爆破断顶施工难度大、工艺复杂的问题,研究充填体在动静载荷下适应性,拟采用巷旁充填柔性材料(矸石)实现留巷.通过刚、柔性约束矸石体试验,分析了不同粒径及横向支护应力对其承载力的影响,掌握了袋装矸石单轴压缩应力应变关系;基于建立的沿空巷旁侧向覆岩结构模型,得到了充填体动静载荷计算方法.研究结果表明:巷旁充填矸石能适应侧向悬顶旋转断裂产生的动静载荷,且施工简单,对厚硬及其类似覆岩下沿空留巷支护设计的确定提供了科学依据.
위료해결후경복암하연공류항측향폭파단정시공난도대、공예복잡적문제,연구충전체재동정재하하괄응성,의채용항방충전유성재료(안석)실현류항.통과강、유성약속안석체시험,분석료불동립경급횡향지호응력대기승재력적영향,장악료대장안석단축압축응력응변관계;기우건립적연공항방측향복암결구모형,득도료충전체동정재하계산방법.연구결과표명:항방충전안석능괄응측향현정선전단렬산생적동정재하,차시공간단,대후경급기유사복암하연공류항지호설계적학정제공료과학의거.
In order to solve the problem of difficulty in process by lateral roof-broken explosion about gob side entry retaining under thick hard roof, the adaptability of filling in static and dynamic load was researched. So, gob side entry retaining was carried out by roadway-side filling with flexible material (gangue). The influence of the different diameter and lateral support stress to load-carrying properties were analyzed and stress-strain relationship of the uniaxial compression was gained by tests. Meanwhile, calculation method of static and dynamic load was obtained with lateral strata’s constructional model established .The results shows that: process of roadway-side filling with gangue was simple and scientific basis was provided for the supporting design determination.