A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Layered filling process for near-slope goaf of metal surface mine
The invention discloses a layered filling process for a near-slope goaf of a metal surface mine. According to the method, layered filling is carried out by taking centimeter stones as a filling framework structure and self-compacting mortar as gap filling slurry; the performance of the self-compacting mortar is as follows: the slump degree is 240-300mm, the slump expansion degree is 410-485mm, and the passing time of a V-shaped funnel is 7-11 seconds; the centimeter stones are obtained by crushing fresh, complete and hard waste rocks of the waste dump as raw materials, and the maximum particle size of the crushed waste rocks is 30 mm. According to the layered filling process for the near-slope goaf of the metal surface mine, waste rocks generated in the mine production process are fully utilized, and the resource utilization rate is increased. According to the technology, after filling of the near-slope goaf is completed, the strength of the filling body after 28 days can reach 15-20 MPa, the stability of the slope is remarkably improved, and follow-up production work of the strip mine is effectively guaranteed.
本发明公开了一种金属露天矿山近边坡采空区的分层充填工艺，该方法以公分石作为充填骨架结构，自密实砂浆作为空隙填充浆料进行分层充填；所述自密实砂浆的性能如下：坍落度为240~300mm，坍落扩展度为410~485mm，V型漏斗通过时间为填7~11s；所述公分石是以新鲜完整、质地坚硬的排土场废石为原材料破碎得到，破碎后最大粒径为30mm。本发明金属露天矿山近边坡采空区的分层充填工艺充分利用矿山生产过程中产生的废石，提高了资源利用率。采用本发明工艺在完成近边坡采空区充填后，充填体28d后的强度可以达到15‑20MPa，边坡的稳定性得到显著提高，有效保证了露天矿后续的生产工作。
Layered filling process for near-slope goaf of metal surface mine
The invention discloses a layered filling process for a near-slope goaf of a metal surface mine. According to the method, layered filling is carried out by taking centimeter stones as a filling framework structure and self-compacting mortar as gap filling slurry; the performance of the self-compacting mortar is as follows: the slump degree is 240-300mm, the slump expansion degree is 410-485mm, and the passing time of a V-shaped funnel is 7-11 seconds; the centimeter stones are obtained by crushing fresh, complete and hard waste rocks of the waste dump as raw materials, and the maximum particle size of the crushed waste rocks is 30 mm. According to the layered filling process for the near-slope goaf of the metal surface mine, waste rocks generated in the mine production process are fully utilized, and the resource utilization rate is increased. According to the technology, after filling of the near-slope goaf is completed, the strength of the filling body after 28 days can reach 15-20 MPa, the stability of the slope is remarkably improved, and follow-up production work of the strip mine is effectively guaranteed.
本发明公开了一种金属露天矿山近边坡采空区的分层充填工艺，该方法以公分石作为充填骨架结构，自密实砂浆作为空隙填充浆料进行分层充填；所述自密实砂浆的性能如下：坍落度为240~300mm，坍落扩展度为410~485mm，V型漏斗通过时间为填7~11s；所述公分石是以新鲜完整、质地坚硬的排土场废石为原材料破碎得到，破碎后最大粒径为30mm。本发明金属露天矿山近边坡采空区的分层充填工艺充分利用矿山生产过程中产生的废石，提高了资源利用率。采用本发明工艺在完成近边坡采空区充填后，充填体28d后的强度可以达到15‑20MPa，边坡的稳定性得到显著提高，有效保证了露天矿后续的生产工作。
Layered filling process for near-slope goaf of metal surface mine
一种金属露天矿山近边坡采空区的分层充填工艺
DUAN XIN (author) / ZHAO YINGBAN (author) / ZHONG CONGCONG (author) / LIU YONGBANG (author) / WANG HAO (author) / QIAN WEI (author) / GAO WEI (author) / TACHI AKAYASU (author) / LI MENGJIE (author) / BAI YUNBO (author)
2024-04-12
Patent
Electronic Resource
Chinese
Mining goaf filling material prepared from mine tailings
| European Patent Office | 2021
| European Patent Office | 2020
Method for filling mine petroleum goaf based on desert sand foaming
| European Patent Office | 2023