·Subsidence data acquisition methods are crucial to mining subsidence research and an essential component of achieving the goal of environmentally friendly coal mining The origin and history of the existing methods of field monitoring calculation and simulation were introduced It summarized and analyzed the main applications flaws and solutions and
·underground coal mining which can provide real time continuous data including r oof displacement and stress loading on roof bolts Field application of the system in a longwall entry is presented
·The stability of the roof in coal mining plays a crucial role in ensuring safe excavation After coal extraction the roof experiences complex and unbalanced stress conditions leading to diverse roof failure behaviors particularly in the case of thick roofs This study examines the failure behaviors of roofs with different thicknesses through a combination of on
·A method to monitor the coal mine roadway roof separation by FBG displacement sensors is reported This method has been applied in Zhu Xian zhuang coal mine a Chinese coal mine in Anhui Based on the roof separation monitoring by the sensors the variation trends of the roof separation displacement during mining is researched
·Mining induced displacement and resettlement MIDR can cause major social disruption and affect the socioeconomic condition of resettled persons yet it is an inevitable outcome of incremental mineral exploitation Kemp Owen & Collins 2017; Owen & Kemp 2015 Mining induced displacement involves mostly the involuntary movement of affected
·In the mining process of a coal seam containing a fault structure due to the influence of mining stress the rock mass inside the fault zone and between the fault and the coal pillar that is preserved to prevent fault activation is prone to producing damage and activation This study is focused on this problem Based on the analysis of the failure activation and
·Coal resources have played a crucial role in China s economic development and they are an important guarantee of China s national strength and the basis of economic progress 1 2 3 recent
·The failure characteristics of roof strata in coal mining and the accurate prediction of mine water inflow are prerequisites for mine safety Taking a typical coal mine in Southwest China as a case a new type of similar material suitable for coal mine in exposed karst areas was developed Through the physical and numerical simulation the failure characteristics of
·To investigate the mechanism of fault slips in coal mines a biaxial shear experiment was carried out under unloading condition based on the fault F16 in Yima city China Two rock samples were used in the experiment and each sample was composed of two triangular sandstone blocks which were put together to simulate the fault One rock sample was used to
·From the viewpoint of safety in underground coal mining the most suitable mining panel is the one with minimum geological structures the right machinery and equipment selection trained employee and proficient stope management Since the ground parameters are uncontrollable and inherent uncertainties exist a high percent of risk will usually accompany
·China s coal mines have to extend to greater depths for the exploitation of more mineral resources and they have suffered catastrophic mining induced disasters such as rockbursts water inrushes coal and gas outbursts and roof fall accidents The microseismic monitoring technique is a practical tool for mine safety management which is extensively
·Protective layer mining is the most effective means to prevent and control coal and gas outbursts In order to deeply understand the dynamic evolution law of mining stress and displacement of the bottom plate coal rock body in the process of protective layer mining the effects of upper protective layer mining on stress variation and displacement deformation in the
·For a genuine and thorough interpretation of coal mining impacts it is quite important to understand the direct as well as the far reaching environmental and social consequences of coal mining
·Coal mining has been a developmental activity in the urban industrial corridor of In 1972 Census displacement among tribal population continued when the coalfields were nationalised in 1972 giving control to the state over the coalfields in Chota Nagpur region In 1991 land was acquired from the tribal population and leased out to private
·This requirement has led underground coal mines to go deeper with more difficult conditions especially the mining hazards such as large deformations rockburst coal burst roof collapse to
·Predicting rock displacement in underground mines using improved machine learning based models Author links open overlay panel Ning Li a Hoang Nguyen b c Jamal Rostami d In this study some underground coal mines in the Donbas region Ukraine were selected and the field measurements were used as a case study Fig 2 The Donbas
·Diamond mines in Zimbabwe in Murowa and Chiadzwa areas gold mines in Ghana in Tarkwa area coal mines in India in Jharkhand Papua New Guinea s open cast copper mines and lignite mines in Germany are amongst the global cases where mineral extraction resulted in physical displacements and varying degrees of successes and
·Coal mining and usage significantly contribute to greenhouse gas emissions and air pollution leading to global climate change and adverse health effects on both nearby communities and the wider population The environmental consequences of coal extraction transportation and combustion are extensive affecting ecosystems water resources and
·Visualization of complex geological structures can technically support the accurate prediction and prevention of coal mine disasters This study proposed a new digital reconstruction method to visualize geological structures based on establishing a virtual model in the digital twin system This methodology for the digital reconstruction of complex fault
·During the mining process of 21 215 high mining coal face the displacement of both ribs within the range of 130 m in front of the coal face exceeds m and the deformation of both ribs at 75 m
Fault slip instability due to mining is a critical factor leading to coal bursts To better understand the impact of fault slip release energy on a coal seam a static and dynamic numerical
·The Jharia coal mine JCM is one of the most disaster prone regions in India Numerous accidents have occurred in the past that have impacted environment and loss of lives The complete 3 D surface displacement field in the epicentral area of the 1999 Mw7 1 Hector Mine earthquake California from space geodetic observations Geophys
·This study presents in situ creep assessments through continuous displacement monitoring of an inactive coal mine waste dump employing Ground Based Interferometric Synthetic Aperture Radar GBInSAR This study explores the applicability of the inverse velocity IV method for landslide failure prediction
