论文部分内容阅读
调查结果表明用重力方法探测空洞的深度范围比根据仅考虑空洞的深度和形状的理论计算所预料的范围要大得多。空洞产生了它自己的重力场,即空洞本身的活动性和在围岩中由于空洞延深的结果而产生的断裂过程引起的密度变化的总和。在几种情形中,用重力方法进行空洞探测,后者是决定性的。围岩中密度变化地区的范围和它们的实际形状取决于许多参数。因此,把测量的重力异常曲线与理论曲线进行比较不能确定空洞的深度。由于△g向下延拓的结果,可以通过表示重力的异常点来确定受空洞或空洞朝地表延伸的上边界干扰的区域重力的中心位置。 Strakhov—Grigorieva—Lapina(1977)方法能够满足野外工作的必要条件。
The results of the survey show that using gravity to detect the depth range of cavities is much larger than the expected range of theoretical calculations based on considering the depth and shape of cavities only. Holes generate their own gravitational field, the sum of the changes in densities caused by the breaking process in the surrounding rock due to the activity of the void itself and the result of cavitation in the surrounding rock. In several cases, the hole detection using the gravity method, the latter is decisive. The range of densities in the surrounding rock and their actual shape depend on many parameters. Therefore, comparing the measured gravity anomaly curve with the theoretical curve can not determine the depth of the cavity. As a result of the downward continuation of Δg, the center of gravity of the area disturbed by the upper boundary where the cavity or cavity extends toward the Earth’s surface can be identified by anomalous points representing gravity. The Strakhov-Grigorieva-Lapina (1977) method meets the requirements of fieldwork.