We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Optimization of Inner Dumping Uncovered Height with Partially Covered End Wall in Adjacent Surface Coal Mining Districts.
- Authors
Ma, Li; Chang, Zhiguo; Li, Kemin; Xiao, Shuangshuang; Ding, Xiaohua
- Abstract
In order to analyze the relationships of inner dumping with covered end wall in adjacent surface coal mining districts, a trough-shaped uncovered end wall model was put forward. A mathematical model concerning uncovered end wall height (UEWH) was established based on minimum cost method. The inner dump capacity was considered regarding its effect on UEWH. Besides, a comprehensive model was established for calculating optimal UEWH in inner dumping with partially covered end wall mode and a shifting distance optimization model based on cost compensation method for building a provisional haulage system to connect inner dump. As for case study in Huolinhe number 1 surface coal mine, research results show that optimal UEWH was 225 m between North Pit and South Pit whereas in number 3 mining district of North Open-Pit Mine it was 23.50 m when making its transition from cross mining to mining along strike. Nevertheless, due to limited inner dump capacity, inner dump height in South and North mining districts shall be appropriately increased and closed pits from earlier period shall be fully utilized to make room for inner dumping with partially uncovered end walls.
- Subjects
COAL mining; MATHEMATICAL optimization; MATHEMATICAL models; MINING districts; NUMBER theory
- Publication
Mathematical Problems in Engineering, 2018, p1
- ISSN
1024-123X
- Publication type
Article
- DOI
10.1155/2018/5404835