奈普顿旋挖钻机专用聚合物泥浆与传统膨润土泥浆对比及注意事项.doc

奈普顿（Neptune)旋挖钻机专用聚合物泥浆与传统膨润土泥浆对比及注意事项Comparison of Neptune Special Polymer Mud for Rotary Drilling Rig and Traditional Bentonite Mud and Cautions性能对比：Performance Comparison 1、 使用简单，采用：“清水+碱+聚合物泥浆”或“清水+碱+聚合物泥浆+进口比重添加物”便于现场配置操作。用量是膨润土的1%以下，节约场地，节省人工。1. The product is easy to use, and “clear water + alkali + polymer mud” or “clear water + alkali + polymer mud + imported proportion additives” is adopted for onsite preparation operation. With a use level of less than 1% of that of bentonite, the product could save site and manpower. 2、 施工中孔径控制更加精确，减少旋挖出土量及混凝土浇筑量，节约材料及机械台班费用。2. The use of this product in construction could realize more precise control on bore diameter, reduce soil coming out of rotary excavation and concrete pouring quantity, and save materials and the expense per set of machinery. 3、 成孔速度快，比膨润土省工、溶解速度快、钻杆、钻头没有泥浆和砂子，增加钻杆和钻头的使用寿命，一定程度上减小机械设备折旧。 3. It realizes fast pore forming. In comparison with bentonite mud, it saves labors, has a high dissolution rate, keeps the drilling stem and drilling bit free of mud and sand, extends the service life of the drilling stem and drilling bit, and lowers the depreciation of mechanical equipment at certain degree. 4、 能加速钻屑砂子絮凝沉淀，可以自行清洁，含沙率低，与混凝土自行分离，成孔后一般不需要二次成孔，减少清孔时间，节省人工并能保证沉渣厚度。 4. It could accelerate the flocculation and deposition of drillings and sand, execute cleaning independently, and realize a low sand content and automatic separation from concrete. After pore forming, secondary pore forming is not needed generally. So, it could reduce the pore cleaning time, save labor used and ensure the thickness of sediment.5、 聚合物泥浆产品属于轻质泥浆，在保证护壁效果的同时，用量小、比重低、粘度高、含沙率极低；灌注顺利，不易堵管，避免混凝土夹砂现象出现。5. Polymer mud belongs to light mud. When guaranteeing the effect of breast wall, the product still has the advantages such as small use level, low specific gravity, high viscosity, and extremely low sand content; the product could be poured smoothly, wont block pipes easily, and could avoid sand inclusion in concrete. 6、 能提高桩基摩檫承载力，提高桩基质量，增加桩的承载力。6. It could raise the friction, bearing capacity, and quality of pile foundation, and enhance the bearing capacity of piles. 注意事项：Cautions1、 配制泥浆时，挖掘造浆池并确保造浆池容积精确，避免浪费及造浆不足。1. During mud preparation, we shall excavate a mud-making sump, ensure the volume of the mud-making sump to be accurate, and avoid wastage and insufficient mud made. 2、 配制泥浆时，向造浆池加入奈普顿产品前，池内水质PH值调节到9左右为最佳。2. Before adding Neptune product to the mud-making sump during mud preparation, we shall best adjust the PH value of the water in the sump to be around 9. 3、 配制泥浆前，空压机钻造浆法施工时建议使用W3.0/5的空压机，以保证发挥奈普顿产品的最佳性能。3. For mud preparation through drilling of air compressor, its suggested to use W3.0/5 air compressor in order to surely give play to the best performance of Neptune products. 4、 钻进施工中，如上层过早出现砂层，请务必提高泥浆黏度。4. In case sand layer appears untimely in drilling construction, please surely raise the viscosity of mud. 5、 钻进施工中，注意保持液面高度并及时补浆。要求液面高度不低于护筒的1/2高度处。以防止液面过低而导致孔内压力失衡造成塌孔事故。当孔径小于800mm钻杆提升对液面的影响过大时，可采用双护筒施工方法，护筒内备足泥浆。5. Maintain the liquid level and supplement mud in time during drilling construction. The liquid level shall not be lower than 1/2 height of pile casing, in order to prevent pressure imbalance in hole and hole collapse accident due to over-low liquid level. When the bore diameter is less than 800mm, and raising drilling stem has over great impact on liquid level, the method of construction with dual pile casing may be adopted, and sufficient mud shall be prepared in the pile casing. 6、 钻进施工中，当钻头打满提钻时，需反钻几下再缓慢提钻，可避免因抽吸力过大而造成孔底坍塌。6. During drilling construction, if the drilling bit completely enters the mud, we shall drill reversely for several times before raising the drilling bit slowly, in order to avoid the collapse of hole bottom due to over big pumping force. 7、 钻进施工中，钻头在出入孔口时，注意减速，以减轻对孔内泥浆扰动，确保孔壁稳定。避免孔口坍塌、护筒下沉。7. During drilling construction, if the drilling bit is at the orifice of access hole, we shall reduce the speed, in order to relieve the turbulence of mud in holes, ensure the stable wall of holes, and avoid the collapse of orifice and the subsiding of pile casing. 8、 钻进施工中，不得随意加大钻头尺寸来扩孔，避免造成塌孔事故。8. Dont expand holes by enlarging the size of drilling bit at random during drilling construction, in order to avoid collapse of holes. 9、 在下钢筋笼过程中，需注意作业规范，减少孔壁接触，以保证沉砂达到灌注桩标准。9. Pay attention to operation standards, and reduce contacting wall of holes during the pro