CAJ | 학술논문

以淮南某矿沿空留巷工作面地质条件为背景，采用FLAC数值模拟软件，研究了不同留巷跨度、充填体宽度、采高对深部沿空留巷围岩稳定性的影响。结果表明：在巷道顶板坚硬、底板较软的情况下，巷道跨度和充填墙体宽度对底鼓影响剧烈，而顶板和墙体的稳定受采高影响较大。底板稳定性成为留巷成功的关键因素，必须通过选择合适的巷道跨度和墙宽，并且与采高相适应，最大限度地减小底鼓量，维持顶板和墙体稳定。数值模拟结果与工程实例中所表现出的实际情况一致。研究成果为该矿及类似条件的沿空留巷工作面安全高效开采提供了依据。
이회남모광연공류항공작면지질조건위배경，채용FLAC수치모의연건，연구료불동류항과도、충전체관도、채고대심부연공류항위암은정성적영향。결과표명：재항도정판견경、저판교연적정황하，항도과도화충전장체관도대저고영향극렬，이정판화장체적은정수채고영향교대。저판은정성성위류항성공적관건인소，필수통과선택합괄적항도과도화장관，병차여채고상괄응，최대한도지감소저고량，유지정판화장체은정。수치모의결과여공정실례중소표현출적실제정황일치。연구성과위해광급유사조건적연공류항공작면안전고효개채제공료의거。
Applying FLAC numerical software, the influence of different roadway spans, stowing body widths, and mining heights on surrounding rock stability of deep roadway retained along gob in a mine was researched. Results showed that roadway span and stowing wall width strongly influenced floor heave, and mining height large influenced the stability of roof and wall under the condition of hard roof and soft floor. Floor stability became key factor of successfully retaining roadway along gob. It was necessary that reducing floor heave and keeping roof and wall stable by selecting rational roadway span and wall width which was adaptable for mining height. Numerical result was accordance with field observation. This could provide reference for safe and high-efficiency mining face with retaining roadway along gob.