储量级别（Level of reserves）是区分和衡量矿产储量精度（或可靠程度）的标准，其目的是便于正确掌握国家的资源，统一矿产储量的计算、审批、统计和用途。
主要阐述了矿区通过实施坑内钻探，提高储量级别，降低和避免井下采矿工程风险，节约了成本，增加了效益。
By using drilling in pit, ore reserve classification is increased, risks of underground mining engineering are reduced and avoided.
煤层气储量、资源量级别主要受控于勘探区所处的勘探阶段和勘探程度。
The grades of coalbed gas reserves and resources extents are mainly determined by exploration stage and degree of a wildcat area.
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