我队514机在某孔施工,鑽机傾角70°,地层变化較复杂,鑽进孔深70～120米,发现漏水。漏水地方30～40米处,为风化破碎带石灰岩大裂缝,采用黄泥球及高粘度泥浆处理达四个小班无效,为此,采用稻草黄泥球上扫补壁的方法,經过几个孔的使用証明,效果良好。稻草泥球的做法:将稻草切成10～15毫米长的稻草末,将黃土与水混合反复搅拌成软泥,按每一小桶(約18公升)软泥摻入10～15公斤稻草末,搅拌均匀,制成球形,混合軟硬程度,以用手稍施力团起,不易从指縫中被挤出为好。上扫补壁法:降下粗径鑽具于漏水位置下部約1～1.5米处,然后,从孔口投入2～5桶稻草泥球,待泥球落于鑽具上部时,向孔内送入25～30秒冲洗液,开动鑽机廻轉上下提动10～20分钟,同时以回水管从孔口送冲洗液,由于鑽具离心力的作用,泥球搅开,草泥进入裂缝内,此后停車于原来廻轉位置,先从孔口注入20～25秒冲洗液2～3桶,视孔径、孔深及 My team 514 machine in a hole construction, rig dip 70 °, the formation changes more complicated, drilling hole depth of 70 to 120 meters, found leaking. Leakage place 30 to 40 meters, weathered limestone broken limestone large cracks, the use of yellow clay ball and high viscosity mud up to four small classes of invalid, for this reason, straw yellow clay ball sweep the wall method, after several The use of holes proved effective. Straw mud ball practice: the straw cut into 10 ~ 15 mm long straw, the loess and water mixing repeatedly stir into slime, according to each keg (about 18 liters) slime mixed with 10 to 15 kg of straw end , Stir, made of spherical shape, mixed with hard and soft degree to slightly force the hands from the group, not easily squeezed out from the fingers as well. On the sweeping wall method: lower the diameter of the drill in the leaking position of the lower part of about 1 to 1.5 meters, then, from the orifice into the 2 to 5 barrels of straw mud balls, mud balls fall on the drill when the upper part of the hole to send Into the 25 to 30 seconds rinse liquid, start drilling rig 迴 turn up and down 10 to 20 minutes, at the same time to the return pipe from the hole to send the rinse solution, due to the centrifugal force of drilling tools, mud balls agitate, mud into the cracks, After stopping at the original 迴 turn position, first injection of 20 to 25 seconds from the orifice rinse 2 to 3 barrels, depending on the aperture, hole depth and