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打桩机锤头 洛阳锤铸造厂

联系人:朱文杰

咨询热线 :133 3388 9451

固定电话 :0379-64961800

客服信箱 :13333889451@qq.com

地址:河南洛阳 孟津工业园区 隆华大道

网址:www.chongjizuantou.com.cn

施工中使用钻头的技巧

钻头是钻机的主要组成部分,是传递冲击能量,直接和岩石接触,爆破的工具。钻头在整个运行的过程中,受力很复杂,所以对于制造钻头的材料、形状等都有很高的要求。 Drill is the main component of drilling rig. It is a tool for transmitting impact energy, contacting rock directly and blasting. The drill bit is very complex in the whole operation process, so it has high requirements for the material and shape of the drill bit. 在使用偏心钻头操作时要把握技术要领,选择的钻进参数应以低转速、低给进压力、高上返风速为原则,施工操作过程中应根据所钻进地层中岩石的硬度、松散程度、含水量等因素控制钻进速度,当钻遇到特别松散或较大裂隙的地层时,尤其要降低给进速度和给进压力,反复进行排渣清孔。 The technical essentials should be grasped when the eccentric bit is used, and the selection of drilling parameters should be based on the principle of low speed, low feed pressure and high return wind speed. In the process of construction, drilling speed should be controlled according to the rock hardness, loose degree, water content and so on. In the formation, the feed speed and the feed pressure should be reduced, and the slag removal should be repeated. 在具体的施工操作中还应注意以下几个方面: In the specific construction operation, we should also pay attention to the following aspects: ❆ 钻具下孔前应检查潜孔冲击器、跟管钻具、套管及套管靴连接是否牢固,偏心钻头转动是否灵活,通风是否顺畅。 Before the drilling tool, the hole impactor, the heel pipe, the casing and the casing shoe should be checked firmly, whether the eccentric bit is flexible, and whether the ventilation is smooth. ❆ 钻进过程中应注意观察套管的跟进情况及孔内排粉情况,每钻进0.3~0.4米应强吹孔排粉,以保持孔内清洁。吹孔时,中心钻具向上提动距离应严加控制以能实现强力吹孔排粉为限,禁止在钻进过程中强力起拔中心钻具。 During the drilling process, attention should be paid to casing follow up and powder discharge inside the hole. Every 0.3 to 0.4 meters drilling should be strong blow hole discharge to keep the hole clean. When blowing holes, the lifting distance of the central drilling tools should be strictly controlled so as to achieve a strong blow hole and powder discharge. It is forbidden to pull the central drilling tools forcefully during drilling. ❆ 钻进结束或需要更换中心钻具时,应先进行清孔,将孔底残渣吹尽,然后停止回转,把中心钻具缓缓向上提动,提升力的大小以刚好能提动中心钻具为合适,提升高度以偏心钻头后背与套管鞋前端接触为止;然后低速反转钻具,同时缓慢向上试提中心钻具。当观察到中心钻具可以顺利提升时,表明偏心钻头已收拢,这时可以按照常规方法提升中心钻具,直到全部提出中心钻具。在反转钻具时,应小心操作,防止钻具脱扣。 When the drilling tools are finished or need to be replaced, the holes should be cleared first, the residue is blown away, then the rotation is stopped and the center drill is slowly moved up. The lifting force is just right to lift the center drilling tool, the lifting height is in contact with the front end of the casing shoe with the back of the eccentric bit, and then the low speed reverses the drill. At the same time, the central drilling tool is slowly raised. When it is observed that the central drill can be lifted smoothly, the eccentric bit has been closed, and the central drilling tool can be raised in accordance with the conventional method until all the central drilling tools are put forward. When reversing drilling tools, care should be taken to prevent drilling tools from tripping.

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联系人:朱文杰  咨询热线:133 3388 9451  固定电话 :0379-64961800
客服信箱:13333889451@qq.com  地址:河南 洛阳 孟津工业园区 隆华大道  网址:www.chongjizuantou.com.cn
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