本文選題：硫化鐵結(jié)核　切入點(diǎn)：松軟煤層　出處：《煤礦安全》2017年11期 　論文類型：期刊論文

【摘要】：針對(duì)松軟含硫化鐵結(jié)核煤層在順層鉆孔施工存在的塌孔、卡鉆、成孔深度淺等問(wèn)題,提出深槽螺旋復(fù)合鉆進(jìn)技術(shù),開發(fā)出相應(yīng)鉆具組合,并通過(guò)在實(shí)踐中的不斷試驗(yàn),對(duì)鉆具進(jìn)行了優(yōu)化改進(jìn)。研究結(jié)果表明,在松軟含硫化鐵結(jié)核地層中鉆進(jìn),原來(lái)一直認(rèn)為硫化鐵結(jié)核是影響鉆進(jìn)成孔的決定性因素的這一觀點(diǎn)存在認(rèn)識(shí)上的誤區(qū),真正起決定性作用的是硫化鐵結(jié)核影響下的孔壁的穩(wěn)定性;深槽寬翼片螺旋復(fù)合鉆進(jìn)技術(shù)在松軟含硫化鐵結(jié)核煤層中成孔率高,有其獨(dú)特優(yōu)勢(shì)。
[Abstract]:Aiming at the problems of hole collapse, drilling jam and shallow hole forming depth in soft iron-sulfide nodule coal seam construction, this paper puts forward the technology of deep groove helical composite drilling, develops the corresponding drilling tool combination, and through the continuous test in practice, puts forward the technology of deep groove helical composite drilling. The optimum improvement of drilling tools has been carried out. The research results show that there is a misunderstanding in the view that iron sulfide nodules are the decisive factors affecting drilling hole formation in soft iron-sulfide nodule formation. The stability of the hole wall under the influence of iron sulfide nodules is really decisive, and the deep groove wide wing helical composite drilling technology has its unique advantages because of its high pore formation rate in soft iron sulfide nodules coal seams.
【作者單位】： 中煤科工集團(tuán)西安研究院有限公司;
【基金】：山西省煤基重點(diǎn)科技攻關(guān)資助項(xiàng)目(Q2014-07)
【分類號(hào)】：TD712.6

【相似文獻(xiàn)】

相關(guān)期刊論文 前2條

1 楊東全;下部鉆具組合分析的有限差分方法[J];華南理工大學(xué)學(xué)報(bào)(自然科學(xué)版);2003年S1期

2 孔凡忠,鄭小平,姚振漢;底部鉆具組合的二重非線性有限元分析[J];工程力學(xué);2000年06期

，

本文編號(hào)：1577192