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关门山地质队从五八年施工以来，发现有的钻孔坍塌掉块十分严重，虽采取无水泵钻进减轻了对井壁的冲刷，但效果也不甚大，这些坍塌物米自溶洞或破碎带，从黄色细粒到很大的块。如西岔CК7孔上部没有水位，170米的孔深破碎带达五层之多，每层0.5—2米，遇到该层不论是无泵或取粉管捞粉，岩粉总不见减少，而且越来越多，过去曾用灌注水泥或下套管、丢飞管等方法来处理，但只对一二层有效，在技术革新运动中，我们大胆试用了粘泥造壁来代替套管和水泥。处理方法是选择较好的膨润土，（干粘土，用手掰不开，团成泥饼用水冲不开）加部分水捣匀，
Since the construction of the Kummenshan Geological Team, it has been found that some of the boreholes collapsed very seriously since the construction of the Kushan Mountain Geological Team. Although the water pump drilling has been adopted to reduce the erosion of the borehole wall, the effect is not very great. The collapse of the karst cave or crushing With yellow granules to large blocks. Such as the West Crosses CК7 hole no water level, 170 meters deep hole broken up to five as many as 0.5-2 meters per layer, encountered this layer whether it is no pump or take the powder tube fishing powder, rock powder always see no reduction, And more and more, in the past have been used to pour cement or casing, throwing fly tube and other methods to deal with, but only effective on the first and second floor, in the technological innovation movement, we boldly tried slime wall instead of casing And cement. Treatment is to choose a better bentonite, (dry clay, hand can not open, the muddy cake into the water is not open) plus some water ramming,