Analysis of the Landslide At a Limestone Open Pit Mine In China

 — In the rainy season of 1981, the large scale landslide happened at Baguanhe Limestone Openpit Mine. The width of the landslide body is about 200m,vertical height about 250m,volume of the landslide body 4.5x106m3 (10.63Mt). The mining and transportation systems of the whole openpit mine were damaged and production of the …

Risk assessment of fault water inrush during deep mining

 — Coal mine water inrush threatens mining operations, pollutes the environment, and wastes significant water resources [17], [18]. The Yanzhou mining area is a typical North China-Type coalfield. Lower coal mining is chiefly menaced by the Benxi Formation aquifer and Ordovician high-confined water [19]. This type of water inrush is …

Abandoned mines acquire new beauty in …

 — Tongluoshan mine park, located in Chongqing's Yubei district, was once the largest limestone mining area in the district. Soaked by minerals, its ponds gradually took on stunning colors of emerald and …

Limestone—A Crucial and Versatile Industrial Mineral …

Limestone is an essential mineral commodity of national importance. Some of the many prod-ucts made using limestone are shown in this photograph—breakfast cereal, paint, …

Long-term groundwater geochemical evolution induced by coal mining

Groundwater chemical composition can be changed due to long-term coal mining activities, but it was unclear how it was induced in Taiyuan Formation limestone (TFL) regarding the lack of relevant quantitative studies. The aim of this research is to improve understanding of the chemical composition ch …

9 Biggest Mining Companies in China

 — China's mining industry is vast, leading the world in the production of numerous minerals including aluminum, cement, coal, gold, graphite, iron and steel lead, magnesium, rare earths, and zinc.

Jaw Crusher

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Feasibility of Injecting Pretreated Mine Water into a Deep …

 — The groundwater quality in the Lilou Coal Mine in Shandong Province can be divided into "three zones" based on the range of mining-induced fractures. Considering the observed Ordovician aquifer water level decline rate of 2.6 m/year, we propose that the saline mine water contained in Zones II and III can be injected into the well-developed …

Identification of mixing water source and response …

 — The mining depth of the North China type coal mine has reached nearly 1000 m, and the activity of radium and radon in deep groundwater is significantly high due to mining (Yi et al., 2019). In response to global climate change, China proposes carbon emission reduction. ... The results show that the limestone water is in a state of receiving ...

Hydrogeochemical Processes of Carboniferous …

506 Mine Water and the Environment (2022) 41:504–517 1 3 is 167.35 m thick with dominant components of medium-ne sandstone and magmatic rock and minor mudstone and sandy mudstone layers. The CLA, with an average thickness of 140 m, contains limestone, mudstone, ne sandstone, and thin coal seams; limestone accounts for most …

Hydro-geochemical processes of the deep Ordovician

 — The Ordovician aquifer is a typical limestone aquifer associated with Pangzhuang coal mine in North China. The groundwater properties in this area have been investigated, as the aquifer is a major drinking-water source for local people. The hydro-chemical type of the water is Ca-Na-HCO3. The bicarbonate concentration (290–428 …

Limestone—A Crucial and Versatile Industrial Mineral …

China. With fewer quarries the average haul distance will increase, and limestone prices will likely increase once more. Some Issues in Limestone Mining. Limestone is most often mined from a quarry. However, underground limestone . mines are found at places in the central and eastern United States, especially in and near cities.

Environmental Hazards of Limestone Mining and Adaptive …

 — Limestone mining causes widespread disturbance in the environment. Myriad impacts are observed as changes in land use pattern, habitat loss, higher noise levels, dust emissions and changes in aquifer regimes. ... Countries like China, the USA, Russia, Japan, India, Brazil, Germany, Mexico and Italy are some of the world's largest …

An Uncertainty Method for Probabilistic Analysis of

 — In this study, a post-mine limestone quarry located in the town of Fengshan, Guangxi Province, southwestern China. The quarry is 134 m high and has an open-pit area of 10,340 m 2. It dips at 75°–80° in the direction 275°–295°. ... Many abandoned limestone mines in China are located in urban residential areas. These mines were mined by ...

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The Water Resisting Properties of the Top Portion of the

International Journal of Rock Mechanics and Mining Sciences

 — In order to estimate fluid flow characteristics and the distribution of hydrogeologic properties of the limestone aquifer, this study performed an integrated …

(PDF) Environmental Hazards of Limestone Mining and

 — Countries like China, the USA, Russia, Japan, India, ... Limestone mining and various other anthropogenic activities in the neighbouring areas were found destroying the habitats of these plants ...

The recovery of soil N-cycling and P-cycling following …

 — 1. Introduction. Mining is necessary for the production of energy and materials that drive the world's economy (Hund et al., 2013).One major consequence of mining is biodiversity loss (Sonter et al., 2018) and land degradation, particularly in tropical regions (Sonter et al., 2017), where mining for coal, limestone, precious metals, and rare-earth …

Global Limestone Market Size, Share & Growth Report, 2030

The global limestone market size was valued at USD 72.31 billion in 2022 and is expected to grow at a compound annual growth rate (CAGR) of 7.3% from 2023 to 2030 ... The company is aiming to boost its operation using the limestone mining reserves they received through acquisition. ... China's Huaxin Cement announced that they have acquired ...

Comprehensive investigation of water-conducting channels …

 — in the limestone mining area of Beihai City, Guangxi. Province, ... Li GY, Zhou WF (1999) Sinkholes in karst mining areas in China and . some methods of prevention. Eng Geol 52(1–2):45–50.

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Limestone Market

The iron and steel industry consumes the most limestone globally and in China. China is a major crude steel producer globally, accounting for more than 50% of the global share. Europe, India, and Japan follow China.

Comprehensive investigation of water-conducting channels …

 — A limestone mining area in Beihai City, Guangxi Province, China, has faced severe water inrush problems during the mining process (Fig. 1), which have greatly reduced the mining efficiency. The mine has two main water gushing points, one of which is presented in Fig. 1a. The hydrochemical analysis results of the water gushing point are …

Geochemistry of rare earth elements in groundwater from …

 — To investigate the geochemistry of rare earth elements in groundwater from the Taiyuan Formation limestone aquifer, the concentrations of rare earth elements (REEs) were determined by ICP-MS for groundwater and limestone samples collected from the Taiyuan Formation limestone aquifer in the Wolonghu Coal Mine, Anhui province, China. …

Failure mechanism and treatment of mine landslide with

 — 2.1 Geomorphological features. Laoyingzui landslide is located in the middle of Huangshan Limestone Mine in Mountain, Emeishan City, Sichuan Province, China (Fig. 1d), in the low mountain to low middle mountain section at the edge of Sichuan Basin. The overall terrain is high in the southwest and low in the northeast.

Study on water inrush pattern of Ordovician limestone in North China

 — The degree of water-rock interaction affecting the accurate identification of mine water inrush source. • The cation exchange controls the formation of low Ca 2+ (Mg 2+), and high Na + (K +) mine water.. Eliminating the influence of cation exchange, Ordovician limestone, 14 th limestone, and water inrush samples have the same …

The karst lands of southern China

 — A sequence of limestone, thousands of metres thick and almost unbroken from the Devonian to the Triassic, forms the world's largest and most spectacular karst terrain largely within the southern …

Hydrogeochemical Evolution of an Ordovician Limestone …

 — Statistical analysis was used to study the hydrogeochemical evolution of an Ordovician limestone aquifer group in the Hancheng mining area. Before mining, the groundwater flowed from northwest to southeast, the water type was primarily SO4–HCO3, and was mainly controlled by the tectonic structure and the specific hydrogeological …

Feasibility of Injecting Pretreated Mine Water into a …

Keywords Eastern China coal mine areas · Saline coal mine water (SCMW) · Ordovician aquifer recharge · In situ mine water injection · Hydrodynamic eld evolution ... the total mine water quantity) and limestone aquifers below the coal oor (accounting for 30% of the total mine water quantity). A 2D conceptual geological tectonic model is