阅读说明：本技术 土壤检测装置和方法 (Soil detection device and method ) 是由 蔡永军 张栋 赵迎波 马云宾 李柏成 蔡文超 杨世梅 吴琼 谭贤君 施宁 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种土壤检测装置和方法,属于检测技术领域,土壤检测装置包括：光缆组件、加热组件和测量组件；光缆组件包括光缆和加强芯,光缆被配置为延管道长度方向铺设,加强芯设置在光缆中,被光缆包裹；加热组件的一端与加强芯连接,加热组件的另一端与地面连接；测量组件与光缆组件连接,被配置为在加热组件的加热过程中测量光缆组件周围土壤的热状况。通过加热组件间歇对加强芯供电加热,测量组件测量加热过程中周围土壤的热状况,以此得到管道沿线土壤的温度变化情况并别温度异常区域。解决了相关技术中的温度检测装置对土壤的温度变化敏感度不高,从而无法精确检测出土壤的热状况的问题,达到了提高土壤检测的精确度的效果。(The invention discloses a soil detection device and a method, belonging to the technical field of detection, wherein the soil detection device comprises: the optical cable assembly, the heating assembly and the measuring assembly; the optical cable assembly comprises an optical cable and a reinforced core, wherein the optical cable is configured to be laid along the length direction of the pipeline, and the reinforced core is arranged in the optical cable and is wrapped by the optical cable; one end of the heating component is connected with the reinforcing core, and the other end of the heating component is connected with the ground; a measurement assembly is coupled to the cable assembly and configured to measure a thermal condition of soil surrounding the cable assembly during heating of the heating assembly. The reinforcing core is intermittently powered and heated by the heating assembly, and the measuring assembly measures the thermal condition of the surrounding soil in the heating process, so that the temperature change condition of the soil along the pipeline can be obtained, and the temperature abnormal area can be distinguished. The problem of temperature-detecting device among the correlation technique is not high to the temperature variation sensitivity of soil to the thermal condition of soil can't be detected out to the accuracy is solved, the effect of the accuracy that improves soil detection has been reached.)

1. A soil detection device, characterized in that, soil detection device includes:

the optical cable assembly, the heating assembly and the measuring assembly;

the optical cable assembly comprises an optical cable and a reinforced core, wherein the optical cable is laid along the length direction of the pipeline, and the reinforced core is arranged in the optical cable and is wrapped by the optical cable;

one end of the heating component is connected with the reinforcing core, and the other end of the heating component is connected with the ground;

a measurement assembly including a distributed fiber optic thermometer coupled to the fiber optic cable assembly and configured to measure a thermal condition of soil surrounding the fiber optic cable assembly during heating of the heating assembly.

2. The soil detection device recited in claim 1, wherein the heating assembly includes a potentiostat, the reinforcing core being connected to a cathode of the potentiostat, the potentiostat being configured to supply current to the reinforcing core.

3. The soil detection device of claim 2, wherein the potentiostat is heated by intermittent application of current to the reinforcing core.

4. The soil detection device of claim 1, wherein the measurement component is configured to measure an initial temperature, a rate of temperature rise, and a rate of temperature fall of the soil.

5. The soil detection device of claim 1, wherein the thermal condition comprises thermal conductivity;

the measurement assembly is configured to measure thermal conditions of soil surrounding the fiber optic cable assembly during heating of the heating assembly, including:

the measuring assembly is used for determining the temperature change along the line of the pipeline to be detected according to a thermal conductivity formula, wherein the thermal conductivity formula is determined as follows:

w＝a(T1-T2)/(t1-t2)+b；

wherein w is the soil thermal conductivity, T1 is the soil initial temperature, T2 is the temperature after temperature rise, T1 is the energization start time, T2 is the energization end time, and a and b are constants.

6. A method of soil detection, the method comprising:

wrapping a strength member in the cable;

laying the optical cable wrapped by the reinforced core along the pipeline;

connecting the measurement assembly to the fiber optic cable;

connecting one end of the heating assembly to the reinforcing core;

the other end of the heating component is connected with the ground;

inputting current to the reinforcing core by using a heating assembly to heat;

measuring thermal conditions of soil surrounding the fiber optic cable assembly during heating of the heating assembly using the measurement assembly, the measurement assembly comprising a distributed optical fiber thermometer.

7. The soil detection method of claim 6, wherein the heating assembly comprises a potentiostat, the reinforcing core being connected to a cathode of the potentiostat, the potentiostat supplying current to the reinforcing core.

8. The soil detection method of claim 7, wherein the potentiostat is heated by intermittent application of current to the reinforcing core.

9. The soil testing method of claim 6, wherein said measuring assembly measures an initial temperature of said soil before said heating assembly begins operating;

when the heating assembly works, the measuring assembly measures the temperature rising rate of the soil;

and when the heating assembly stops working, the measuring assembly measures the cooling rate of the soil.

10. The soil detection method of claim 6, wherein the thermal condition comprises thermal conductivity;

measuring a thermal condition of soil surrounding the fiber optic cable assembly during heating of the heating assembly using the measurement assembly, comprising:

the measuring assembly is used for determining the temperature change along the line of the pipeline to be detected according to a thermal conductivity formula, wherein the thermal conductivity formula is determined as follows:

w＝a(T1-T2)/(t1-t2)+b；

where w is the thermal conductivity of the soil, T1 is the initial temperature, T2 is the temperature after temperature rise, T1 is the energization start time, T2 is the energization end time, and a and b are constants.