Coal Mining Displacement Sensor

GUC Series Mine Safety Type Displacement Sensors

2017-10-24  GUC series of mine safety type displacement sensor is a magnetostrictive principle of non-contact absolute position measurement of displacement sensors, suitable for a mixture of methane gas and coal dust explosion hazards of coal mine. Contactless sensing with highest durability, Stable and reliable performance.

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Experimental analysis of control technology and ...

2021-10-22  The No. 2 Mining Area of Shitanjing is located in the high mountain area of western Ningxia. The dip angle of coal strata is 18°–27°, with an average of 23°.

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An improved method of three-dimensional displacement

2021-8-26  horizontal displacement Generally, the mining direction follows the strike direction, which is perpendicular to the inclined direction, to extract coal easily. Figure 1 illustrates the profile of a mining subsidence basin after the coal mine has been exploited in the strike direction. At this point, the coal seam can be regarded as horizontal.

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Optical Sensor Monitoring and Analysis Platform

2019-8-12  8 Fibre Optic Strain and Displacement Sensors FBG pressure sensor Small draft, online monitoring FBG Roof separation monitor Measured Depth:3~4m Accuracy:0.5mm Range:0~200mm To convert the displacement between

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(PDF) Framework and Application of a Big Data Monitoring ...

2019-5-23  coal mining in which roadways must be excavated before coal mining. This is a major change in coal mining technology and one of the important developments in the sustainable mining of coal resources.

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Coal mine Safety Features Dec 2007 Photonics Spectra

Coal mine Safety. Intelligent optical fiber sensor systems may help reduce the number of mining disasters. Tongyu Liu, Shandong Micro-Sensor Photonics Ltd., and Eric Bergles and William Yang, BaySpec Inc. According to the latest official mining statistics, from 2003 to 2006, more than 20,000 people died from coal mining accidents in China.

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COAL MINE EXPERT SYSTEM FOR PREWARMING OF

2016-4-23  COAL MINE EXPERT SYSTEM FOR PREWARMING OF COAL ACCIDENTS Mr. Sachin M Dandage, Ms. Neha. D. Kadu PG Scholar, Computer Science and Engg. Department, PLITMS, Buldana, Maharastra , India ... displacement sensor, and the external circuit is simple conversion. When sensor on the shaft rotates at variable

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Internal strain monitoring of coal samples based on fiber ...

The Bragg grating sensors were used to measure strain in anchor plate [33] and the distributed optical fiber was arranged in the process of shotcrete lining support process of the tunnel to monitor strain [34]. However, there are many studies on surface strain and few studies on real-time internal strain monitoring of raw coal samples, and only ...

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The Research on Characteristics of Hydraulic Support ...

2018-1-18  Mathematical Model of Displacement Sensor. Displacement sensor is an important part of electro-hydraulic servo-positional control system, and its performance directly affects the control accuracy of the hydraulic support position and electro control system. Therefore, the accuracy of displacement sensors should be one more grade higher than ...

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An improved method of three-dimensional displacement

2021-8-26  horizontal displacement Generally, the mining direction follows the strike direction, which is perpendicular to the inclined direction, to extract coal easily. Figure 1 illustrates the profile of a mining subsidence basin after the coal mine has been exploited in the strike direction. At this point, the coal seam can be regarded as horizontal.

More

Optical Sensor Monitoring and Analysis Platform

2019-8-12  8 Fibre Optic Strain and Displacement Sensors FBG pressure sensor Small draft, online monitoring FBG Roof separation monitor Measured Depth:3~4m Accuracy:0.5mm Range:0~200mm To convert the displacement between

More

China Quality Displacement Measurement - XiaoPeng

2022-1-5  The pull-up displacement sensor is linear in a structured composition. The advantages of the angle sensor and linear displacement sensors are thoroughly combined. It has the advantages of small installation size, compact structure, extensive measurement trip, and high precision. The itinerary is from a few hundred mm to more than ten meters. (2 ...

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Application of Distributed Optical Fiber Sensing ...

2019-7-30  In recent 20 years, as the depletion of coal resources in shallow strata, coal mining operations have been moving to deeper strata [1]. Approximately 60% of the coal mining works are conducted with a mining depth of over 800m in China [2]. Mining works in deep strata are facing the chal-lenges ofhighground stresses andcomplexgeological condi ...

More

(PDF) Framework and Application of a Big Data Monitoring ...

2019-5-23  coal mining in which roadways must be excavated before coal mining. This is a major change in coal mining technology and one of the important developments in the sustainable mining of coal resources.

More

COAL MINE EXPERT SYSTEM FOR PREWARMING OF

2016-4-23  COAL MINE EXPERT SYSTEM FOR PREWARMING OF COAL ACCIDENTS Mr. Sachin M Dandage, Ms. Neha. D. Kadu PG Scholar, Computer Science and Engg. Department, PLITMS, Buldana, Maharastra , India ... displacement sensor, and the external circuit is simple conversion. When sensor on the shaft rotates at variable

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Advances in fibre optic based geotechnical monitoring ...

2019-3-1  To understand the roof behavior and failure process in coal mines, Shen et al. conducted a field experiment using an integrated real time monitoring system with extensometers, stress-meters, and a seismic sensor to measure rock mass deformation, stress change, and seismicity in roadway roofs during mining-induced failure , as shown in Fig. 5.

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Ground Displacement Monitoring – CATALYST.Earth

1 天前  Make Better Decisions, Faster. Our near real-time ground displacement monitoring services use the latest innovations in satellite radar technology to help business users make better risk and investment decisions regarding critical infrastructure, buildings, safety ratings, loan portfolios, etc. How We Do it.

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China University of Mining and Technology - SCI最新收录 ...

2022-1-4  Title: Controlling Coal Spontaneous Combustion Fire in Longwall Gob Using Comprehensive Methods-a Case Study Author(s): Cheng, Jianwei; Luo, Wang; Zhao, Zhongling; et al. Source: MINING METALLURGY EXPLORATION, MAY 6 2021 Document Type

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Field Distributed Displacement Monitoring of the Coal ...

2020-10-10  The roof displacement monitoring of coal mine roadways is the most common means to prevent the roof accident, and is the key to ensure the coal mine safety production. But the ... sensor to monitor the changes of various physical

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GUC Series Mine Safety Type Displacement Sensors

2017-10-24  GUC series of mine safety type displacement sensor is a magnetostrictive principle of non-contact absolute position measurement of displacement sensors, suitable for a mixture of methane gas and coal dust explosion hazards of coal mine. Contactless sensing with highest durability, Stable and reliable performance.

More

Sensor and Monitoring System for Mining Applications ...

2022-1-6  In coal mining sites, due to the presence of moisture content in the coal and its volatile nature, combustion of coal becomes a significant hazard and is required to be monitored at its early stage in order to take appropriate controls to prevent accidents such as fires, explosions, asphyxiation, loss of life, equipment and resources.

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An improved method of three-dimensional displacement

2021-8-26  horizontal displacement Generally, the mining direction follows the strike direction, which is perpendicular to the inclined direction, to extract coal easily. Figure 1 illustrates the profile of a mining subsidence basin after the coal mine has been exploited in the strike direction. At this point, the coal seam can be regarded as horizontal.

More

technical Monitoring underground coal mining-induced ...

2014-1-15  for detecting surface displacement caused by underground coal mining is mentioned. Post-mining subsidence:This example deals with subsidence in an abandoned coal mining area located in Gaeun, Korea, reported by Jung et al. [21]. From November 1992 to October 1998, 25 JERS-1 SAR interferometric pairs were used, and the crack level obtained by a

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China Quality Displacement Measurement - XiaoPeng

2022-1-5  The pull-up displacement sensor is linear in a structured composition. The advantages of the angle sensor and linear displacement sensors are thoroughly combined. It has the advantages of small installation size, compact structure, extensive measurement trip, and high precision. The itinerary is from a few hundred mm to more than ten meters. (2 ...

More

Application of Distributed Optical Fiber Sensing ...

2019-7-30  In recent 20 years, as the depletion of coal resources in shallow strata, coal mining operations have been moving to deeper strata [1]. Approximately 60% of the coal mining works are conducted with a mining depth of over 800m in China [2]. Mining works in deep strata are facing the chal-lenges ofhighground stresses andcomplexgeological condi ...

More

Optical Sensor Monitoring and Analysis Platform

2019-8-12  8 Fibre Optic Strain and Displacement Sensors FBG pressure sensor Small draft, online monitoring FBG Roof separation monitor Measured Depth:3~4m Accuracy:0.5mm Range:0~200mm To convert the displacement between

More

COAL MINE EXPERT SYSTEM FOR PREWARMING OF

2016-4-23  COAL MINE EXPERT SYSTEM FOR PREWARMING OF COAL ACCIDENTS Mr. Sachin M Dandage, Ms. Neha. D. Kadu PG Scholar, Computer Science and Engg. Department, PLITMS, Buldana, Maharastra , India ... displacement sensor, and the external circuit is simple conversion. When sensor on the shaft rotates at variable

More

China University of Mining and Technology - SCI最新收录 ...

2022-1-4  Title: Controlling Coal Spontaneous Combustion Fire in Longwall Gob Using Comprehensive Methods-a Case Study Author(s): Cheng, Jianwei; Luo, Wang; Zhao, Zhongling; et al. Source: MINING METALLURGY EXPLORATION, MAY 6 2021 Document Type

More