水井钻机厂家分享不同的地质结构,水井钻机钻头如何选择 SANs="" font-size:=""> 打井机的主要工作对象是泥土和岩石,由于所施工的桩孔深度较浅,岩石经过构造运动、自然界的机械和化学作用,结构、粒度、孔 隙率、交接状况、产状、抗压强度等发生了复杂的变化。所以打井机的钻头要根据不同的地质结构来选择。 1、中风基岩:配备截齿筒式取心钻头、锥形螺旋钻头、双层底的旋挖钻斗,或者截齿直行螺旋钻头、双层底的旋挖钻斗 2、淤泥、粘性不强土层、砂土、胶结较差粒径较小的卵石层:可配双层底的钻挖钻斗。 3、硬胶泥:选用单进口土的旋挖钻斗,或斗齿直螺。 4、粘土:选用单底层的旋转挖斗,如果直径偏小可采用两瓣斗或带卸土板的钻斗。 5、交接好的卵砾石和强风化岩石:需要配备锥形螺旋钻头和双层底的旋挖钻斗(粒径较大的用单口,粒径小的用双口) 6、微风化基石:配备牙轮筒式取心钻头、锥形螺旋钻头、双层底的旋挖钻斗如果直径偏大还要采取分级钻进工艺。 7、冻土层:含沙量少的可用斗齿螺旋钻斗和旋挖钻斗,含沙量大的可用锥形螺旋钻头。ABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" sandbox="allow-forms allow-popUPS allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation" frameborder="0" src="https://googleads.g.doubleclick.net/pagead/ads?guci=2.2.0.0.2.2.0.0&client=ca-pub-6745515041074118&ouTPUt=html&adk=1812271804&adf=3279755396&plat=1%3A32776%2C2%3A32776%2C8%3A134217728%2C9%3A134250504%2C10%3A32%2C11%3A32%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1081344%2C32%3A32%2C40%3A32&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=32.0.0&pra=5&wgl=1&tt_state=W3siaXNzdWVyT3JpZ2luIjoiaHR0cHM6Ly9hZHNlcnZpY2UuZ29vZ2xlLmNvbSISInN0YXRlIjowfSx7Imlzc3Vlck9yaWdpbiI6Imh0dHBzOi8vYXR0ZXN0YXRpb24uYW5kcm9pZC5jb20iLCJzdGF0ZSI6MH1d&dt=1605667635648&bpp=7&bdt=504&idt=183&shv=r20201112&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3D6094e48d1a50ec5f-22c3fafd85c400ea%3AT%3D1604384219%3ART%3D1604384219%3AS%3DALNI_MbLK2Z1Okh7mHqoP1SzE-pCwwSbRQ&nras=1&correlator=6444714842300&frm=23&ife=1&pv=1&ga_vid=1117043497.1605667636&ga_sid=1605667636&ga_hid=1153038434&ga_fc=0&iag=3&icsg=138&nhd=1&dssz=5&mdo=0&mso=0&u_tz=480&u_his=24&u_java=0&u_h=1080&u_w=1920&u_ah=1040&u_aw=1920&u_cd=24&u_nplug=5&u_nmime=15&adx=-12245933&ady=-12245933&biw=1880&bih=881&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&oid=3&pvsid=2829855889117634&pem=830&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fadd_suc%3D1&rx=0&eae=2&fc=1920&brdim=0%2C0%2C0%2C0%2C1920%2C0%2C1920%2C1040%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=8204&bc=31&ifi=0&uci=0.k46ulgl3pjmc&fsb=1&dtd=199" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.k46ulgl3pjmc" data-load-complete="true"> |