CAJ | 학술논문

深部软岩体应力测试难度大，尚无有效测试技术。对此，研制了一种适用于软岩体应力测试的三向压应力传感器，提出了相应的解算方法，并对传感器进行了标定试验、干扰试验和室内模型试验。标定试验结果表明，传感器的线性度、重复性等静态性能良好。当荷载不断增大时，传感器的测量误差先逐渐减小，直至为0，而后又逐渐增大，但误差基本上都在10%以内，说明传感器能较精确地测量量程范围内的应力大小。干扰试验结果表明，传感器3个传感面之间的相互干扰可以忽略不计。模型试验结果表明，随着加载次数的增加，传感器所感知的力越来越接近所施加的力，最后趋近于相等，进一步表明了该传感器基本满足工程实践要求。此外，初步探讨了传感器的优化设计方向等问题。
심부연암체응력측시난도대，상무유효측시기술。대차，연제료일충괄용우연암체응력측시적삼향압응력전감기，제출료상응적해산방법，병대전감기진행료표정시험、간우시험화실내모형시험。표정시험결과표명，전감기적선성도、중복성등정태성능량호。당하재불단증대시，전감기적측량오차선축점감소，직지위0，이후우축점증대，단오차기본상도재10%이내，설명전감기능교정학지측량량정범위내적응력대소。간우시험결과표명，전감기3개전감면지간적상호간우가이홀략불계。모형시험결과표명，수착가재차수적증가，전감기소감지적력월래월접근소시가적력，최후추근우상등，진일보표명료해전감기기본만족공정실천요구。차외，초보탐토료전감기적우화설계방향등문제。
The stress measurement of deep soft rock mass is very hard;and the existing testing technique is not available. Thus, a 3D compressive sensor is particularly invented to measure the geostress of soft rock mass;the corresponding method of calculation is introduced;the calibration test, interference test and laboratory model experiment for the sensor are also performed. The calibration test data show that the static properties, such as linearity, repeatability, etc., are well. As the load increases gradually, the measuring error of sensor is diminishing, until zero, and then increasing, but less than 10%as a whole;so a conclusion is obtained that the stress within a reasonable range can be perceived accurately. The interference test shows that the mutual disturbance of three perception surfaces is negligible. The laboratory model experiment data show that, when forcing repeatedly, the value detected by the sensor approach to the load application more and more, almost equal finally, and further summing-up is gained that the 3D compressive sensor basically meet engineering practice requirements. In addition, the optimization design of the sensor is discussed preliminarily.