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煤田采用绳索取心钻探是提高经济技术效果的有效途径。“SM系列绳索取心采煤钻具”的研制成功为在煤田推广绳索取心钻探提供了可靠的取心工具。采煤钻具不但具有S75绳索取心钻具先进的单动、减振、到位报信、岩心堵塞报信等装置,而且具有特殊的半合管结构,能够取出并能观察到煤心的原状结构。它适用于煤层薄、层数多、层位变化大、煤性脆、松软等不稳定煤层的取心。其中SM－2型钻具特别适用于钻进粉煤,SM－4型钻具特别适用于钻进含有夹的硬脆煤层。钻具性能可靠,是目前煤田勘探中较先进的特种取心工具。
Coring drilling in the coalfield is an effective way to improve the economic and technological effects. The successful development of the “SM Series Cord Coring Coal Drilling Tools” provides a reliable coring tool for the promotion of cord coring drilling in coal fields. Coal mining drill not only has the S75 rope coring drill advanced single action, vibration reduction, in-place message, core plugging letters and other devices, but also has a special semi-pipe structure, to remove and be able to observe the coal core of the original structure. It is suitable for coal seams thin, multi-storey, horizon changes, coal brittle, soft and unstable coring. The SM-2 is especially suitable for drilling pulverized coal, and the SM-4 is particularly suitable for drilling hard and brittle coal seams with clamps. Drilling performance is reliable, is currently the more advanced exploration of coal special coring tools.