%0 Dataset
%T Technical Development Dataset for Insulation and Permeable Layers in Alpine Mining Areas(2023-2025)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/0f097d64-cfc9-4339-b7e2-ccc3b94f91ba
%W NCDC
%A li chuan
%A ma xiao dong
%A zou xing chen
%K Insulated and permeable;thermal conductivity;Volumetric heat capacity;thermal diffusivity;infiltration rate
%X This dataset is designed to meet the ecological restoration and permafrost protection needs of coal gangue storage yards in high-altitude mining areas. It aims to significantly compare the "strong thermal conductivity and poor water holding capacity" of coal gangue with the "low thermal conductivity, high thermal storage, and good permeability" of meadow peat soil. The goal is to reconstruct the "thermal insulation+permeability" functional layer through on-site materials and low-cost methods, so that the thermal insulation and permeability performance of coal gangue media can approach that of peat soil. The data production is based on actual samples collected from the Muli mining area in Qinghai Province, using a combination of indoor controllable hot water coupling experiments and one-dimensional infiltration experiments. In the autonomous soil column device, a 275 W stable radiation heat source is set up, equipped with CS650/CS655 three parameter sensors and HFP01 heat flux plate. Temperature, moisture, and heat flux are collected at high frequencies at depths of 2/7/12 cm. The system measures the thermal conductivity coefficient k, volumetric heat capacity Cv, and thermal diffusion coefficient α=k/Cv; And constant head infiltration and wetting front observation were carried out using organic glass soil columns to calculate the saturated permeability coefficient and infiltration attenuation parameters. Simultaneously classify the particle size of coal gangue (0.25-0.5, 0.5-1, 1-2, 2-5 mm) and optimize the surface covering materials (coconut fiber, straw, Jiawo, anti erosion, including single-layer/multi-layer), and compare different equivalent thicknesses (1/2/12 cm) of meadow peat soil as a benchmark; And set up 8 demonstration schemes in the mining area to obtain field thermal parameters, daily changes in moisture content, and ecological indicators (coverage, plant height), and conduct a comprehensive evaluation of multiple indicators using entropy weight method