Abstract

When mining coal, detailed geological information on the structure of the coal-bearing strata and the quality of coal seams minimizes the risks associated with complicating mining and geological factors and changes in coal quality characteristics. The experience of using the mechanical logging method as an express method of operational exploration at the Olon-Shibirsk coal deposit is considered. Mechanical logging data were compared with core sampling and well logging data. As a result, the criteria for dividing the coal-bearing strata of the deposit into lithotypes were identified. According to these criteria, a general pattern can be distinguished for the considered coal-bearing strata: with a decrease in the dimension of the grains that make up the rock the drilling speed increases; with an increase in the content of organic matter in the rock, the drilling speed also increases and the maximum drilling speed characterizes coal seams. Drilling speed is a defining parameter, while other drilling parameters supplement its readings in case of ambiguity when interpreting the graph. For coal seams, the dependence of the drilling speed on the ash content of the seam was determined. At the same time, the dependence is most precise for seams with a thickness of more than 1 m. Based on the data of operational exploration using mechanical logging the morphology of coal seams and the complexity of their structure and ash content have been clarified for some areas, making it possible to clarify the reserves and quality for geological blocks. The final comparison confirmed the increase in the counting accuracy using the mechanical logging method. The practical significance of the research lies in improving the quality of operational exploration in the deposit while reducing costs.

中文翻译：

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机械测井在Olon-Shibirsk煤层结构优化中的应用

摘要

在开采煤炭时，有关含煤地层结构和煤层质量的详细地质信息可将与复杂开采和地质因素以及煤炭质量特征变化相关的风险降至最低。考虑了使用机械测井法作为 Olon-Shibirsk 煤矿床作业勘探的一种快速方法的经验。将机械测井数据与岩心取样和测井数据进行了比较。结果，确定了将矿床含煤地层划分为岩型的标准。根据这些标准，可以区分出所考虑的含煤地层的一般模式：随着构成岩石的颗粒尺寸的减小，钻孔速度增加；随着岩石中有机质含量的增加，钻孔速度也增加，最大钻孔速度表征煤层。钻孔速度是一个定义参数，而其他钻孔参数则补充其读数，以防在解释图表时出现歧义。对于煤层，确定了钻孔速度对煤层灰分含量的依赖性。同时，对于厚度超过 1 m 的接缝，相关性最为精确。通过机械测井作业勘探资料，明确了部分地区煤层的形态、结构的复杂性和灰分含量，为明确地质块体的储量和质量提供了可能。最后的比较证实了使用机械测井法计数精度的提高。