coal miningevaluationforecastingunderground miningminesIn this paper a method is outlined for the determination of stress and displacement distributions in bord and pillar workings of coal mines. The method is
The meaning of BORD-AND-PILLAR is of or relating to a system of coal mining in which tunnels are driven in a checkerboard pattern having massive square pillars between them which are gradually cut away as the work proceeds.
Underground coal miningDilationConvergenceUltimate induced stress and cavingInstrumentation and monitoring is undertaken aiming at evaluation of changing values of rock mechanic parameters, namely, dilation, load, convergence, and stress, during mining for a safe strata......
In this paper, we present the design of an early warning system in a “Bord & Pillar” coal mine. It uses Wireless Sensor Networks (WSN) to detect the e 火是主要重要的事物对在地下煤矿运作的那些人。 有是能查出火和引起警报的一个警告系统是重要的。 在本文,我们在“Bord &柱子”煤矿提出一...
1 The bord and pillar mining method is used to operate roughly 70–80% of India’s underground coal mines, in which 3000 MT of coal reserves are located in coal pillars due to complex overlying strata.2 Some of the underground coal mining, in India is experiencing strata control problems ...
4) room-and-pillar mining 房柱式开采 1. Influence factors of room-and-pillar mining in seam groups under building; 建筑物下煤层群房柱式开采的影响因素 2. Recently benefits of coal mines become more and more better,many local coal mines begin to reform the original mining method,among ...
5) coal wall mining 煤壁回采 1. Research on plan through F_4 fault coal wall mining in Lingquan open coal mine; 灵泉煤矿过F_4断层煤壁回采方案6) Stoping of coal pillar 煤柱回采 例句>> 补充资料:回采率 在计算的区域(或计算范围)内采出的工业储量与报销的工业储量(即该区域的工业总储量...
While longwall technology is a relative lead, in underground coal exploitation and bord and pillar or its variant the room and pillar continue to hold its sway, in the underground arena. Of the current global coal production of around 4000 Mt, the share of underground production is about 65%...
Currently there is no system in place for continuous monitoring of roof health status of an underground Bord & Pillar coal mine to forecast roof fall events. This paper addresses a multi-hop wireless sensor network (MWSN) based solution for real time monitoring of roof health status in an ...
Measurement of sub-surface strata behaviour in bord and pillar mining: a case studyRanigunj coalfield (India) has been facing significant problems due to subsidence as a result of underground mining of coal seams. The occurrence of the thick seams in close proximity, shallow depth, great ...