Rib stability: A way forward for safe coal extraction in India

Singh Satyendra K.; Agrawal Harshit; Singh Awanindra P.

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Rib stability: A way forward for safe coal extraction in India

机译：肋骨稳定性：印度安全采煤的出路

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Ensuring rib stability during pillar extraction is of prime importance in bord and pillar (B&P) method of underground coal mining with caving. Rib stability has been assessed here by way of assessing factor of safety (FOS), a ratio of the strength of rib to stress on it. Earlier formulations for rib stability when applied to case studies gave very low FOS value suggesting significant ground control problems, which were contrary to the field observations. This has necessitated the need to revisit the concept of rib stability. The stress coming on the rib is estimated with the use of numerical modeling technique using the FLAC3Dsoftware. The methodology of assessing rib-stability with the help of suggested rib-strength formulation has been validated at eight Indian coal mines. The outcome of this study finds relevance and importance in ensuring underground coal liquidation with improved safety and conservation.

机译：在放顶煤开采的博尔德和支柱（B＆P）方法中，确保支柱开采期间的肋骨稳定性至关重要。肋骨的稳定性已通过评估安全系数（FOS）来评估，安全系数是肋骨的强度与应力的比值。应用于案例研究的早期肋骨稳定性配方的FOS值很低，表明存在严重的地面控制问题，这与现场观察相反。这就需要重新考虑肋骨稳定性的概念。通过使用FLAC3D软件的数值建模技术，可以估算肋骨上的应力。借助建议的肋骨强度公式评估肋骨稳定性的方法已在印度的八座煤矿得到验证。这项研究的结果发现，在确保改善安全性和保护性的情况下，确保地下煤炭的清理工作具有重要意义。

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《矿业科学技术学报：英文版》 |2017年第006期|P.1087-1091|共5页
作者
Singh Satyendra K.; Agrawal Harshit; Singh Awanindra P.;
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作者单位

[1]Mining Methods and Design Simulation Research Group, CSIR-Central Institute of Mining and Fuel Research (CSIR-CIMFR), Dhanbad 826015, India;

[1]Mining Methods and Design Simulation Research Group, CSIR-Central Institute of Mining and Fuel Research (CSIR-CIMFR), Dhanbad 826015, India;

[1]Mining Methods and Design Simulation Research Group, CSIR-Central Institute of Mining and Fuel Research (CSIR-CIMFR), Dhanbad 826015, India;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 CHI
中图分类矿业工程;
关键词
Rib stress estimation; Rib-strength; Rib-stability; Numerical modeling; Bord pillar method; Underground coal extraction;

机译：肋骨应力估算;肋骨强度;肋骨稳定性;数值模拟;上下柱法;地下采煤;

Rib stability: A way forward for safe coal extraction in India

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