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1、<p> Horizontal Directional Drill Hole Drill end of the study and application</p><p> of a drill hole end of a composition and function.</p><p> Construction of drill hole orientation :
2、drill pipe, a launcher tube and a guide to accommodate bit. </p><p> Construction of drill hole orientation with drilling, to change, through magnetic and drilling fluid delivery functions. Coordinated by c
3、omputer control, in strict accordance with the design of the track has been completed oriented hole. Drilling is drilling high pressure liquid jet cutting board and bit accomplished; Bits board and the installation of bo
4、ards of drilling teeth. Rotary drilling bit at the time supporting Cutting role in promoting the drill pipe at changes to the role; transmitter</p><p> 2, the construction of bore hole : drill pipe, the fir
5、st to expand, the rotary joint drill pipe and back to Rafah. When the guide hole drilling is completed, unloaded oriented bit, to accommodate tube launchers and connect with reverse bore bit and rotary joint, Then after
6、the rotary joint drill pipe connected to Rafah, to Reamer drilling. The large diameter holes, a number of bore drilling, hole diameter gradually expanded to the size requirement. </p><p> 3, back to Rafah P
7、ipeline Construction hole : drill pipe to Rafah, to expand first, rotating joints and pipe-drawing tools. When the bore drilling is completed, the drill pipe to Rafah after expanding access to the first and rotary joint,
8、 After the rotary connector connected pipe-drawing tools and the laying of pipelines to be anti-expansion Pipeline.</p><p> 2, the main drill a research and application, the drill pipe drilling pipe constru
9、ction quality is the key to success. Construction of the pipe and caused damage to the drill pipe connecting the end of drill hole of the lost, whether to expand or expensive first mud motors, and pipelines. As the drill
10、 pipe construction of HDD technology to the success of a basic role, in recent years, drill pipe manufacturers have continued to adopt advanced technology to improve the structure of the pipe to imp</p><p>
11、 2, guided boring BHA </p><p> (1) Universal : Universal Detection device for capacity, Variable bit to the plate-and cutting tools. It is normally used in soft soil and backfill soil construction, replacem
12、ent of hard-bit teeth, hard formation for the construction, including the hard soil, rock, gravel and soft rock. </p><p> (2) Rigid-formation comprising : Definitive detection devices installed capacity, be
13、lt-injection tube bending and (a) separate from the spray head, apply to soft soil controllable jet construction; (b) rock drill, as applied to drilling mixed layer, In hard rock section allows rotary drilling bits. <
14、/p><p> (3) soft-rock composition : Definitive detection devices installed capacity, hammer, Hammerhead applicable to the hard ground and soft rock drilling high penetration and to </p><p> (4) R
15、ock : Definitive detection devices to accommodate devices, change the connector, mud motors, bits of rock to rock Drilling 3, used to expand drilling hole </p><p> (1) with long shafts to extend the first f
16、eatures : 30 degrees cone shape, conducive to efficient cutting and squeezing soil; access to a variety of back end and threaded connection forms; forward and backward drilling fluid spray nozzle of the can for TC-rock t
17、eeth; Groove can be used to efficiently remove cuttings; Dimensions 8 "(200mm) a 20" (500mm) applicable to the general condition of the project, in the density of clay, gravel and mud-rock clay soil (gravel, co
18、bble, etc.) construction, bo</p><p> (2) mid-knife to expand on features : open drilling body 30 degrees conical cutting arm, In comparison with the extrusion is excellent BTA and mixed role. Is a unique wa
19、y to expand is omnipotent, in the sand, soft soil, clay and concrete compound layer construction with excellent performance, to be effective so that the soil mixed with the mud flow into the mixture has the ideal BTA and
20、 powerful mixing. Dimensions 8 "(200mm) a 20" (500mm). </p><p> (3) spin-barrel-back expansion device features : suitable for medium and large drilling rig; open drilling body, three-arm design. w
21、ith high efficiency and the cutting ability of BTA. Replacement rock cutting teeth can be replaced by the forward and backward nozzle, the standard size of 12 "(300mm). Welding with industry standard API 5C6. genera
22、lly used, broken clay soil superior extrusion type, This trace was excellent cutting properties and BTA, often with a barrel-to expand the use of devices</p><p> (4) barrel-type device to expand features :
23、suitable for medium and large rigs. 30 degrees around the cone; Replacement rock cutting teeth; both before and after the end can be replaced with the nozzle; standard size 12 "(300mm). Barrel - type device to expan
24、d in clay, gravel soil, aggregates and construction with the rock cutting and excellent extrusion properties, used mainly for extrusion soil (soft clay, peat), in soil squeezed out holes and maintain.</p><p>
25、; 水平定向鉆機孔底鉆具的研究與應(yīng)用</p><p> 一、孔底鉆具的組成與功能1、導(dǎo)向孔施工</p><p> 鉆具組成:鉆桿、發(fā)射器容納管和導(dǎo)向鉆頭。 導(dǎo)向孔施工鉆具具有鉆孔、變向、通磁和輸送鉆液的功能。通過人機協(xié)調(diào)控制,嚴格按已設(shè)計的軌跡完成導(dǎo)向孔施工。鉆孔施工是以高壓鉆液射流和鉆頭板切削共同完成的;鉆頭板以及安裝板上的鉆牙,在鉆頭旋轉(zhuǎn)鉆進時起輔助的切削作用,在鉆桿
26、推進時起變向作用;發(fā)射器容納管用來放置發(fā)射器,在容納管上開有通磁槽,并用非金屬材料密封以防止高壓鉆液進入,發(fā)射器發(fā)射的電磁波經(jīng)通磁槽向外發(fā)射。鉆桿和鉆頭內(nèi)部應(yīng)提供足夠大的通道以滿足對鉆液流量的需求。2、擴孔施工 </p><p> 鉆具組成:鉆桿、回擴頭、旋轉(zhuǎn)接頭和回拉鉆桿。當(dāng)導(dǎo)向孔鉆進完成后,卸下導(dǎo)向鉆頭、發(fā)射器容納管,接上反向擴孔鉆頭和旋轉(zhuǎn)接頭,然后在旋轉(zhuǎn)接頭后接
27、上回拉鉆桿,進行回拉擴孔鉆進。對直徑較大的孔,可進行多次擴孔鉆進,使鉆孔直徑逐漸擴大至尺寸要求。3、回拉鋪管施工</p><p> 鉆具組成:回拉鉆桿、回擴頭、旋轉(zhuǎn)接頭和拉管頭。當(dāng)擴孔鉆進完成后,在回拉鉆桿后接上回擴頭和旋轉(zhuǎn)接頭,在旋轉(zhuǎn)接頭后接上拉管頭和待鋪設(shè)的管線進行反擴鋪管。</p><p> 二、主要鉆具的研究與應(yīng)用1、鉆桿 鉆桿的質(zhì)量是施工成功的關(guān)鍵,施工中鉆
28、桿的損壞將導(dǎo)致與鉆桿連接的孔底鉆具的丟失,無論是回擴頭還是價格昂貴的泥漿馬達、管線等。由于鉆桿對HDD施工技術(shù)的成功起著基礎(chǔ)性的作用,所以近年來,鉆桿制造商們不斷采用先進技術(shù)致力于改進鉆桿的結(jié)構(gòu),提高其性能和質(zhì)量。 目前,HDD鉆桿主要分為整體式和焊接式兩種結(jié)構(gòu)形式。 摩擦焊接式鉆桿實現(xiàn)了鉆桿最佳結(jié)構(gòu)組合,這就意味著為滿足不同需要的、不同性能的材料能夠被用來做鉆桿的不同部位。磨擦焊接鉆桿具有很高的機械性能、耐磨性能,
29、而且重量輕、柔韌性好,可方便地實現(xiàn)不同形式的螺紋接頭與不同規(guī)格的鋼管的焊接組合。 摩檫焊接式鉆桿的技術(shù)關(guān)鍵是焊接質(zhì)量,如果焊接及熱處理過程控制得當(dāng),摩擦焊接的連接強度應(yīng)達到甚至高于母材本身強度。為了保證焊接質(zhì)量,國外制造商用于制造摩擦焊接鉆桿的設(shè)備均采用先進的計算機監(jiān)控和數(shù)據(jù)記錄技術(shù)。通過監(jiān)控系統(tǒng)確保每根鉆桿所有焊接重要參數(shù)均按照預(yù)先給定的數(shù)值執(zhí)行。也就是說,一批鉆桿中的任何一根鉆桿,均控制在嚴格的公差范圍內(nèi),由計算機監(jiān)控系統(tǒng)
30、確保其焊接性能的一致性。而且通過單根鉆</p><p><b> (2)硬地層型</b></p><p> 組成:通用探測裝置容納器、帶彎曲式噴射管和(a)可分開的噴射頭,適用于在軟土層可控噴射施工;(b)巖石鉆頭,適用于混合層鉆進,在堅硬的部分允許巖石鉆頭旋轉(zhuǎn)鉆進。(3)軟巖層型</p><p> 組成:通用探測裝置容納器、錘體、
31、錘頭 適用于在硬地面和軟巖層中進行高穿透鉆進和轉(zhuǎn)向(4)巖石型</p><p> 組成:通用的探測裝置容納器、轉(zhuǎn)換接頭、泥漿馬達、巖石鉆頭適用于巖石層鉆進施工</p><p> ?。场⒒財U鉆進用鉆具(1)帶長槽的回擴頭</p><p> 特點:30度錐體形狀,有利于高效率的切削和擠壓土壤;可獲得多種螺紋和背端連接形式;向前和向后噴射鉆液的噴嘴為可
32、換式;TC巖石牙齒;凹槽體用來高效率排除鉆屑;標(biāo)準(zhǔn)尺寸8"(200mm)一20"(500mm) 適用于普遍的工程條件,在中密度粘土、礫泥粘土和含巖土壤(礫石、鵝卵石等)中施工,兼有飛旋刀式切割器和錐形擠擴器的復(fù)合功能,具有很高的施工效率。 安裝TC巖石切削牙齒,可提高切削作用。普遍適用于中等硬度土層,特別適合在硬土和巖石土層中施工。(2)飛旋刀式回擴器</p><p> 特點:開放式鉆體,3
33、0度錐型切削臂,與擠壓式相比具有極好的排屑和混合的作用。是一種獨特地萬能回擴器,在沙地、軟土層、粘土層和混凝料中施工具有極好的性能,可有效的使泥漿與土壤混合成流動的混合物,具有理想的排屑和強大的混合作用。標(biāo)準(zhǔn)尺寸8"(200mm)一20"(500mm)。</p><p> ?。ǎ常┬笆交財U器</p><p> 特點:適合于中大型鉆機;開放式鉆體,三臂式設(shè)計,具有高效率的切削和排
34、屑能力。可更換巖石切削牙齒,可更換的向前和向后噴嘴,標(biāo)準(zhǔn)尺寸12"(300mm),焊接符合API工業(yè)標(biāo)準(zhǔn)5C6。 一般用于,破碎黏土型土壤優(yōu)于擠壓式,這種飛刀具有卓越的切削和排屑特性,常常與桶式回擴器一起使用。</p><p><b> (4)桶式回擴器</b></p><p><b> 特點:</b></p>&l
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