一、概况 鹤壁四矿赵家荒风井净径5米、深320.2米。井筒基岩段大部分为砂质页岩与砂岩互层,其余为少量的页岩及煤层,岩性属于中等硬度。井壁厚300毫米,为200号混凝土。井内设有梯子间,预制钢筋混凝土梯子梁、隔板及塑料围板(图1)。井筒施工期间涌水量5米~3/时。 二、井筒施工 井筒上部掘砌段高为4米,采用成型木模板浇灌混凝土井壁。至井深135.2米后,改 First, an overview Hebi four mine Zhao deserted air shaft net diameter of 5 meters, 320.2 meters deep. Most of the bedrock bedrocks are interbedded with sandy shale and sandstone, and the rest are a small amount of shale and coal seams, with moderate hardness. Well wall thickness of 300 mm, No. 200 concrete. Wells are provided with ladders, prefabricated reinforced concrete ladder beams, partitions and plastic panels (Figure 1). Well water during the construction of 5 meters ~ 3 / hour. Second, the wellbore construction Wellbore excavation section of the upper section of 4 meters high, the use of forming wood formwork concrete wall irrigation. To 135.2 meters after the well, change