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在捷尔任斯基矿务局(顿巴斯)阿尔泰姆矿4号井1025 m深处,对混凝土井壁的变形特征进行了观测。设置观测站的井段岩层为泥质页岩、砂质泥岩、煤和石灰岩(图1)。泥质页岩的单轴抗压强度为55～60MPa,岩层倾角55°。井筒净经8 m,混凝土标号为M200,观测站区段井壁厚0.5 m。观测站由8套接线盒组成,每个接线盒联接两个ДИ-9型遥测应变仪,用来测量混凝土井壁在圆周方向和垂直方向的变形。为了测量与混凝土收缩有关的变形,
Deformation characteristics of the concrete shaft wall were observed at a depth of 1025 m in Well 4 of the Altem Mine, Dzerzhinsky Mining Bureau (Donbass). The well sections of the observation station are shale shale, sandy mudstone, coal and limestone (Figure 1). Uniaxial compressive strength of shale shale is 55 ~ 60MPa, rock dip angle of 55 °. Wellbore through the net 8 m, concrete label M200, observation station section wall thickness of 0.5 m. The observatory consists of eight junction boxes, each connected to two ДИ-9 telemetry strain gauges, which measure the deformation of the concrete lining in both the circumferential and vertical directions. In order to measure the deformation associated with concrete shrinkage,