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喀斯特现象在豎井井筒(荒直径8.0公尺,淨直径6.5公尺)掘进中,穿过表层后,在井筒岩帮有一半以上仍为含礫石之砂粘土,与表土无異。有人认为是岩层露头倾斜所致。井筒掘至+86公尺时,东帮风化岩石脱落,形成片帮;其范围达3×2公尺,深度1.5～2.3公尺。同时发现含有粘泥的裂罅,宽度3～15公尺。至+85公尺时,井筒东帮的含粘泥裂罅增大,变成泥洞。不论是泥罅和泥洞,均无涌水现象,但含有緻密的粘泥。当时停正下掘,进行挖泥,探察岩洞。挖开泥洞后,发现洞内岩石表面有交叉的侵蚀波纹,波纹多为水平的和微斜的;凸出的岩石呈圆滑的钝鐘乳状,空洞的形状极不规则,为普通石灰石。这
In the tunneling of shaft shafts (barren diameter of 8.0 meters and net diameter of 6.5 meters), the karst phenomenon is still gravel-laden sandy clay with more than half of the wellbores in the wellbore after passing through the surface layer, which is similar to that of the topsoil. Some people think that the rock outcrop tilt due. When the wellbore is excavated to +86 meters, the weathered rocks fall off to the east to form a sheet gang; the range is 3 x 2 meters and the depth is 1.5-2.3 meters. Also found that slime containing sticky mud, width of 3 to 15 meters. To +85 meters, the wellbore with the help of clay slime increases, into a mud hole. Neither giblets nor mud holes have gushing water, but contain dense sticky mud. Stop digging at that time, dredging, exploration of caves. After digging the mud hole, it is found that there are intersecting erosion ripples on the surface of the rock in the cave. The ripples are mostly horizontal and slightly oblique. The protruding rocks are smooth and dull milky, and the shape of the hollow is extremely irregular, which is ordinary limestone. This