护壁

Drills a hole the filling pile to be suitable for the subsoil water level low and complex, and often needs the counterfort the geological situation.

钻孔灌注桩适用于地下水位较低的和复杂且常需护壁的地质情况。

Results of anti-slide pile excavation of mudstone and siltstone show that it can meet the engineering requirement. It has more effect on protecting the borehole wall and gains more technology and economic benefits.

用于有泥岩和砂岩的抗滑桩坑的开挖，结果表明该技术达到了施工目的，有较好的护壁作用和较好的技术经济效益。

The results show that manually excavated belled piles can increase the bearing capacity of single piles in the compact layer,and that the pile side friction resistance and the effect of the protection wall should not be ignored in the bearing capacity calculation.

试验结果表明：在坚实土层中选用扩底桩可有效提高单桩承载能力；桩侧摩阻力的作用不容忽视；承载力计算时应考虑护壁的厚度。

Use instead and fasten and dig the bit to remove the hole and bottom eluvial soil after 5m (if the rock meeting high hardness while the base rock creeps into, can is it inlay rock bit get into to designing requirement hole dark by fastenning and digging and fighting the clear hole and then to use instead), in order to improve the strength of bearing the weight of of one , put the reinforcing bar cage finally , build the concrete.

本工艺基本上适应于各种土层，如软弱土层、松散杂填土、粉土、砂土、粒径不大（10cm以下）的碎石土和圆砾及其它塑性不大、粘粒较少的粘土，尤其适用于软塑、流塑、孔隙比大、高压缩性、抗剪强度小等特性的淤泥质土及因地下水丰富造成泥浆护壁困难的土层。

The use of betonies mud is the basis of the

地下连续墙的关键工序是斑脱土泥浆护壁。

The use of betonies mud is the basis of the "l.C.O.S.-Veder"process.

地下连续墙的关键工序是斑脱土泥浆护壁。

So Benoto Method,reverse circulation drilling with quadruple-wing drag bit s,drilling with roller-type cutting head and combined drilling technology was adopted as well as wall protection with mud,which is strictly districted in Hongkong and Macao.

根据工程的具体情况，采用贝诺特工法、反循环四翼刮刀钻头钻进、滚刀钻头钻进等组合钻进工艺，同时采用在港澳地区限制严格的泥浆护壁钻进。

So Benoto Method, reverse circulation drilling with quadruple-wing drag bits, drilling with roller-type cutting head and combined drilling technology was adopted as well as wall protection with mud, which is strictly districted in Hongkong and Macao.

根据工程的具体情况，采用贝诺特工法、反循环四翼刮刀钻头钻进、滚刀钻头钻进等组合钻进工艺，同时采用在港澳地区限制严格的泥浆护壁钻进。

Lead on to the defect in pile body of bored caisson pile, mainly relate to wall mud, boring drill rate, 3 materials of concrete, water cement ratio and mixing quality controlled by concrete under water when pouring, self defect of pouring conduit, and operation way heighten conduit, and so forth.

导致钻孔灌注桩桩身缺陷，主要与护壁泥浆、成孔钻速、组成砼的三大材料、在灌注时水下砼控制的水灰比及搅拌质量、灌注导管的自身缺陷、以及提升导管的操作方式等有关，根据一些工程实例，分析了形成桩身缺陷的具体原因，并提出了防范措施。

To meet the demand of wire-line coring drilling in complicated formation,compound solid-free drilling fluid of CL plant glue was compounded and used instead of drilling mud with the property of wall protection and leaking stoppage.

为满足复杂地层绳索取心钻探技术的需要，寻找、配制了既能代替泥浆具有良好的护壁堵漏性能，又能满足绳索取心钻进技术要求的CL植物胶复合无固相冲洗液。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。