General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 42638-2023
Introduction
GB/T 42638-2023 Coal Mine Underground Coal Seam Gas Extraction Radius Direct Measurement Method - Extraction Method is a standard that provides guidelines for determining the radius of gas extraction in coal mines. This method is based on the extraction rate and aims to ensure the safe and efficient extraction of coal seam gas.
The standard outlines the steps and procedures for measuring the gas extraction radius using the extraction method. It includes detailed instructions on the selection and placement of gas extraction boreholes, as well as the measurement of gas extraction rates. The method takes into account various factors such as geological conditions, gas content, and mining operations, to accurately determine the extraction radius.
By following this standard, coal mine operators can effectively manage and control gas extraction in underground coal mines. The direct measurement method outlined in this standard provides a scientific and reliable approach to determine the gas extraction radius. This ensures the safety of workers and the efficient utilization of coal seam gas resources.
In conclusion, GB/T 42638-2023 is an essential standard for coal mine operators to assess and manage the gas extraction radius. It promotes safe and efficient extraction of coal seam gas, contributing to the sustainable development of the coal mining industry.
GB/T 42638-2023 history
2023GB/T 42638-2023 Drainage volume method for direct measurement of coal seam gas drainage radius