After the PHIL Overburden Body, released in 1979, came the HiVol Dual-Purpose Body, released in 1983, which was designed for hauling both coal and/or overburden. "It is very popular," Swank said. …
After the PHIL Overburden Body, released in 1979, came the HiVol Dual-Purpose Body, released in 1983, which was designed for hauling both coal and/or overburden. "It is very popular," Swank said. In the 1990s, the company developed bodies for hard rock mining applications. Later, it launched an oil sands solution.
Underground longwall coal mining alters the initial stress regime of overlying rock strata (overburden), leads to the collapse of highly jointed rock mass or the …
The results show that after shallow coal seam mining, based on the subsidence and movement characteristics, the overburden strata structure can be divided into three zones, which are "boundary ...
After coal seam mining, the overburden movement is transmitted to the surface to form cracks. As a main factor in the damage inflicted by mining subsidence on ground environments, ground cracks always threaten the safety of people's production and life. There are obvious differences in the laws of surface movement and deformation with …
The time-effect mechanism of overburden under coal mining was revealed. On this basis, a monitoring and guarantee system integrating sensing, transmission, processing, early warning, decision …
This paper analyzes the instability movement characteristics of overburden in shallow thick coal seam mining and its influence on the development and distribution of fault fractures. The ...
Coal overburden derived from each mine has a unique AMD potential that it is determined by the occurrence of sulfide minerals, such as pyrite in the overburden, …
Similar material model test of mining overburden rock Model monitoring and excavation scheme. The 22,122 working face of Cuncaota No.2 Coal Mine of China Shenhua Shendong Coal Group Co., Ltd. is ...
Coal mining has gradually entered the deep mining era, and large-height mining is an important way to mine thick coal seams in the deep. The high coal wall will inevitably make the distribution of the overburden structure in the coal mining face more complicated, and the large buried depth will also cause more intense mine pressure. …
@article{Srivastava2014ReclamationOO, title={Reclamation of overburden and lowland in coal mining area with fly ash and selective plantation: A sustainable ecological approach}, author={Nishant K. Srivastava and Lal Chand Ram and Reginald Ebhin Masto}, journal={Ecological Engineering}, year={2014}, volume={71}, pages={479 …
Open pit mining method is one of the surface mining methods that has a traditional cone-shaped excavation and is usually employed to exploit a near-surface, nonselective and low-grade zones deposits. It often results in high productivity and requires large capital investments, low operating costs, and good safety conditions. The main …
Coal mining has a significant impact on the movement of the overburden, leading to potential safety hazards in the working face. In this paper, a similarity simulation experiment was conducted to investigate the migration of overburden during the mining process of a specific working face in the Liuzhuang Coal Mine located in southern …
Underground longwall coal mining alters the initial stress regime of overlying rock strata (overburden), leads to the collapse of highly jointed rock mass or the bending of intact layers, and ...
Detecting the development height of the water-flowing fractured zone in the overburden of coal seam is of great significance for the overburden safety of working face with developed sandstone and thick loose layer. In this paper, the dual-mode parallel electrical method was used for dynamic monitoring of overlying rock in shallow and large …
Coal is the cheapest and thus the preferred energy source in developing countries. A huge volume of coal mine waste rock, which is known as overburden (OB), is generated due to the surface mining ...
The stability of coalmine overburden dumps is a crucial aspect and often requires a slope stabilization method in place to prevent slope failures. Mechanical …
Understanding and quantifying the overburden response at a coal mine helps to assess and predict mining hazards. Clear correlations established between mining incidents and the overburden response can be used to predict future occurrences, enabling coal mines to manage, and prevent future hazards.
The green mining system 3,4,5,6,7 includes water preservation mining, subsidence reduction mining, gangue reduction mining, coal and gas co-mining, and underground gasification mining, and it is ...
Overburdens in coal mining—mountaintop removal mining is considered a safer mining method for coal removal since it avoids underground coal mining. Overburden soil is removed above the coal seams before …
To investigate the mechanism of water–sediment inrush during coal mining, the characteristics of water–sediment flow in rock fractures were quantitatively analyzed by computational fluid dynamics (CFD). Based on the two-phase flow theory, a resistance model of water–sediment flow in fractures was established and verified by a laboratory …
Overburden and waste rock are the non-liquid wastes generated in largest volumes by extraction activities; tailings and spent ore are generated by beneficiation; and slag is generated through processing. Surface and underground mining are the two most common types of mining conducted; however, there are two other types of mining, placer and in ...
The Dongtan coal mine is located in Shandong Province, China. The current main coal seam is the 3 upper coal seam, with a buried depth of approximately 670 m in No. 6 mining area. The thickness of the 3 upper coal seam ranges as 4.12–6.70 m, with an average of 5.41 m. The 63 upper 06 panel has a length of 1456.3 m, width of 260 m, …
Introduction. Underground coal mining often induces large-scale damage to overburden and surface movement, further accelerating the occurrence of mine geological disasters such as water and sand burst under the condition of shallow-seam mining (Kratzsch, 1983; Gray, 1990).The key to preventing water and sand burst is to reveal the …
Coal is the cheapest and thus the preferred energy source in developing countries. A huge volume of coal mine waste rock, which is known as overburden (OB), is generated due to the surface mining ...
After coal seam mining, the overburden movement is transmitted to the surface to form cracks. As a main factor in the damage inflicted by mining subsidence on ground …
The broken pattern of the overburden strata induced by mining has a non-ignorable effect on overlying strata movement, failure, and safety in mining production. To study the caving pattern of overlying strata and determine the calculation method of fracture pathway parameters due to roof caving induced by coal mining, the trapezoidal broken models …
Dynamic failures, or "bumps", remain an imperative safety concern in underground coal mining, despite significant advancements in engineering controls. The presence of spatially discrete, stiff roof units are one feature that has been linked to these events. ... acknowledging the presence of a discrete unit within the overburden in …
Abstract Coal is the cheapest and thus the preferred energy source in developing countries. A huge volume of coal mine waste rock, which is known as overburden (OB), is generated due to the surface mining of coal. Due to convenience and the restricted ... Practical Applications The question of how to replace traditional …
Open-cast mining generates waste material containing rock and soil, along with different types of minerals. This waste material generated during open-cast mining …
In coal seam mining, the overburden strata mainly subsided, the horizontal displacement was very small, and the vertical displacement of the overlying strata all sank within the influence range ...
