Air exhaust type soil body heat conductivity coefficient measuring device

The utility model provides an air exhaust type soil body heat conductivity coefficient measuring device. The measuring device comprises an outer bin, a sample chamber, a heat conductivity coefficienttest probe, a PTFE film, a cylindrical permeable plate, a rubber ring and a rubber gasket, the heat conductivity coefficient probe is placed in the sample chamber, and the sample chamber is placed inthe outer bin. The outer bin is connected with an external sucking pump, and the heat conductivity coefficient testing probe is connected with an external voltage stabilizer and a temperature monitor.The device has the beneficial effects that the problem that the heat conductivity coefficient of a soil body solid-phase composition substance is difficult to obtain is effectively solved, and the heat conductivity coefficient of the solid-phase composition substance and a soil-water mixture can be effectively measured; important values are realized on the measurement and the research of saturated and unsaturated soil body