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一、工程地质简况 河南省密县超化矿东风井主、副风井均为30°斜井,永久支护为200~#素混凝土砌碹、壁(拱)厚均为200毫米。两井筒分别在斜长58.26米及57.8米处遇到含水砾石层。该石层原为一古河床沉积物所形成,垂厚:主斜井16米,副斜井17.9米,均为大小不等无胶结的砾石、卵石及漂石堆积,局部为泥沙充填。 该砾石层恰好处于潜水盆地,故水源丰富。两井筒一般涌水量分别为:主井:70
First, a brief engineering geology Henan Province, superfine Mine Dongfeng main shaft, vice shaft are 30 ° incline, permanent support for the 200 ~ # concrete piles, wall (arch) are 200 mm thick. Two wellbores encountered watery gravel layers at 58.26 m and 57.8 m respectively. The stone was originally formed by an ancient riverbed sediment. The vertical thickness is 16 meters from the main inclined shaft and 17.9 meters to the secondary inclined shaft, all of which are gravel with unequal sizes and cements. Pebbles and boulders accumulate and the sediment is partially filled. The gravel layer happens to be in a submersible basin and is therefore rich in water. The two wells are generally the influx of water were: main well: 70