인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Deformations caused by of roadway floor heave due to the repeated mining of multiple coal seams is a prominent problem in deep coal mining. This work examines roadway floor heave under the influence of repeated mining in multiple coal seams as the research object. Through theoretical analysis, numerical simulation, and field experiments, the failure mechanism of floor heave deformation is revealed, and effective control techniques are proposed. A deformation model for multiple-seam repeated mining was established based on the theory of elastic mechanics, and a control mechanism was analysed. An optimised treatment method for roadway floor heave was proposed. Displacement, stress, and failure zone analyses of the original support and optimised surrounding rock were conducted via FLAC<sup>3D</sup> software, and the optimal treatment method for roadway floor heave was obtained. The applicability of this support method was verified through onsite application. The results indicate that stress superposition is the cause attributed to the repeated mining of multiple coal seams, and stress reduction and effective roof support are the keys to preventing and controlling roadway floor heave. Compared with the original support method, the amount of floor heave was reduced by 60%, and the shrinkage of the two sides was also significantly reduced. The optimised roadway support method provides better control over floor heave.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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