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- Title
Cost Investigation of the Coalmine Subsidence Control Technology of Isolated Overburden Grout Injection.
- Authors
Xu, Jingyi; Xuan, Dayang
- Abstract
The isolated overburden grout injection is a control technology developed for coalmine subsidence issues. To rationally measure the cost input of applying this technique, this paper analyzes its cost composition according to activity-based costing method. Through utilizing this method, the process of grouting is divided into four major operation steps, in which each component's cost sources is described. On this basis, a case study of grouting cost in Huaibei mining area is carried out. The key factor governing the total cost is determined to be the cost of grouting materials, which mainly depends on the distance between material producing site and the grouting station. Furthermore, the total cost of grouting decreases with the increase of coal reserves in an underground longwall working face. Specifically, a significant correlation exists when coal reserves of a longwall exceed 300 thousand tons, while this decreasing trend slows down. The research can facilitate both the evaluation of the applicability of grout injection technology and the optimization of its cost.
- Subjects
GROUT (Mortar); ACTIVITY-based costing; GROUTING; COAL reserves; LAND subsidence
- Publication
Geotechnical & Geological Engineering, 2019, Vol 37, Issue 5, p4251
- ISSN
0960-3182
- Publication type
Article
- DOI
10.1007/s10706-019-00904-2