هل ستصبح شريكنا القادم ؟
To establish a more accurate roof water abundance evaluation model and mitigate the difficulties in roof water abundance prediction and evaluation in the coal mine production process, the 2101 working face of the Yingpanhao coal mine was studied. Combined with the hydrogeological characteristics and drilling data of the study area and …
اقرأ أكثر
reservoir evaluation has indicated that it is hard to achieve a satisfactory result due to reservoir heterogeneity. Machine learning technology has solved many problems in the field of oil and gas geology, but the evaluation method for tight sandstone reservoirs has not been widely used. Data mining is currently a hot topic in the field of ...
اقرأ أكثر
The geological sweet spot evaluation model mainly accounts for total hydrocarbon content, water saturation, and reservoir porosity and permeability. Download : Download high-res image (554KB) Download : Download full-size image; Fig. 1. Workflow of the "geological–engineering" dual sweet spot evaluation method for tight sandstone …
اقرأ أكثر
The event was the largest of its kind since a global mine design change by the operator was instituted in 2008 following three large events in 2005, 2006 and 2007, which measured 3.4, 4.3 and 3.4 moment magnitude (Mw), respectively. Two of the three pre-2008 events (2005 and 2007) damaged ventilation controls in the mine, which fueled a mine fire.
اقرأ أكثر
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
اقرأ أكثر
May. 2020 Sustainable utilization of quartz sandstone mining wastes: Technical note on Chloride and corrosion resistance Sanjeev Kumar1*, Ramesh Chandra Gupta2, Laszlo Csetenyi3 1 2 Research Scholar, Malaviya National Institute of Technology, Jaipur, India Faculty in Department of Civil Engineering, Malaviya National Institute of Technology ...
اقرأ أكثر
We use the 3-D block model of sandstone-hosted uranium deposits as hard data. First, we use the Alpha-Shapes algorithm to calculate the convex hull of the space area where various types of unit ...
اقرأ أكثر
A case study performed by Van Dyke et al. (2018) found in a ia (United States) longwall mine that sandstone thicknesses of 6-12 m combined with an overburden of about 580 m or greater ...
اقرأ أكثر
Water-richness evaluation method and application of clastic rock aquifer in mining seam roof. Mei Qiu, Zhendong Shao, Weiqiang Zhang, Yan Zheng, Xinyu Yin, …
اقرأ أكثر
@article{Wang2023ReformabilityEO, title={Reformability evaluation of blasting-enhanced permeability in in situ leaching mining of low-permeability sandstone-type uranium deposits}, author={Wei Wang and Xuanyu Liang and Qi Ying Niu and Qizhi Wang and Jinyi Zhuo and Xuebin Su and Genmao Zhou and Lixing Zhao and Wei Yuan …
اقرأ أكثر
DOI: 10.1016/j.jhydrol.2022.128314 Corpus ID: 251562356; An upscaling approach to predict mine water inflow from roof sandstone aquifers @article{Xu2022AnUA, title={An upscaling approach to predict mine water inflow from roof sandstone aquifers}, author={Lulu Xu and Meifeng Cai and Shuning Dong and Shangxian Yin and Ting Xiao …
اقرأ أكثر
1. Introduction. Rock brittleness is the liability of rock failing without large plastic deformation under complex loading. Additionally, rock brittleness always plays an important role in the field of mining rock mechanics and is often used to identify the failure characteristics of surrounding rock in deep mines [1].Additionally, there are significant …
اقرأ أكثر
Porosity has an important influence on the elastic properties of tight sandstone. Using acoustic models to study the matrix mineral modulus of tight sandstone reservoirs can provide an important reference for tight sandstone reservoir evaluation. In this paper, taking tight sandstone as an example, starting from the microscopic pore …
اقرأ أكثر
Characterizing reservoir porosity is crucial for oil and gas exploration and reservoir evaluation. Due to the increasing demands of oil and gas exploration and development, characterizing reservoir porosity to the required precision using current methods is challenging. Therefore, this study proposes a Pearson correlation–random …
اقرأ أكثر
Evaluation of seismic potential in a longwall mine with massive ... ... CDC Logo ...
اقرأ أكثر
Mining-induced hydromechanical behavior of sandstone is critical to mining safety and disaster prevention. To investigate the evolution behavior of the mechanical and permeability properties of …
اقرأ أكثر
Abstract. Evaluation of mode I fracture characteristics, such as critical opening displacement and process-zone length, is fundamental for the analysis and prediction of crack growth. To identify deformation with micron-scale resolution, experiments were performed using digital image correlation, where displacement is determined through a ...
اقرأ أكثر
Analysis and evaluation of aquifer water yield property is the premise of water bursting forecast and controlling. The factors influencing aquifer water yield property are numerous and complicated. Taking Yongan Coal Mine Sandstone aquifer III as an example, this study utilizes five common factors or parameters that contribute to aquifer …
اقرأ أكثر
Thick bed sandstone usually has the highest P mf and S mf (Fig. 14 A). As sandstone bed thickness decreases, the fluid mobility also reduces significantly. Thin bed sandstone has the lowest fluid mobility. In addition, the P mf and S mf of tight sandstone increase as the distance from the adjacent sand-mudstone interface increases (Fig. 14 B ...
اقرأ أكثر
Request PDF | Evaluation of Seismic Potential in a Longwall Mine with Massive Sandstone Roof Under Deep Overburden: an Update | In 2016, a 3.7-ML magnitude event caused by mining activity occurred ...
اقرأ أكثر
Evaluation of 2152 geological data points and modeling ... Three underground seismic sensors placed in the sandstone just above mine level were incorporated into an existing network of seven sensors already operating at surface loca-tions surrounding the activity of a longwall mine. Diculty
اقرأ أكثر
Request PDF | Quantitative Evaluation of Tight Sandstone Reservoirs Based on Data Mining Using MICP Data | Tight sandstone reservoirs have become a highlight of unconventional oil and gas ...
اقرأ أكثر
Evaluation of seismic potential in a longwall mine with massive sandstone roof under deep overburden Mark A. Van Dykea,*, Wen H. Sua, and Joe Wicklineb aGround Control Branch, NIOSH, Pittsburgh ...
اقرأ أكثر
16-1 # and 16-2 # mining area model. (a) Layout of boreholes and distribution of mining units in 16-1 and 16-2 mining areas. (b)We divided the model into 36 mining units according to the actual ...
اقرأ أكثر
Aurumin is an ASX-listed exploration company focused on its 2 project areas in Western Australia. Its portfolio of assets includes the Sandstone, Johnson Range, Birrigrin, Mt Dimer, and Mt Palmer projects. As of 31 March 2023, Aurmin had $1.757 million cash and cash equivalents at hand, according to its latest quarterly report published on 21 ...
اقرأ أكثر
Abstract. Salt-induced weathering is a common phenomenon in stone relics, and its traditional artificial evaluation of severity is greatly affected by subjective consciousness and lacks systematic standards. Here, we propose a hyperspectral evaluation method for quantifying salt-induced weathering on sandstone surfaces in laboratory tests.
اقرأ أكثر
The study of sandstone dilation characteristics under actual mining and excavation conditions promotes the safe and efficient development of underground …
اقرأ أكثر
The study of sandstone dilation characteristics under actual mining and excavation conditions promotes the safe and efficient development of underground engineering. Accordingly, this study employs true-triaxial testing to reveal the influence of intermediate principal stress and unloading action in the minimum principal stress …
اقرأ أكثر
This study used life cycle assessment (LCA) tool to evaluate the overall impact of artisanal sandstone mining (ASAM) on the environment and human health. …
اقرأ أكثر
