共查询到20条相似文献，搜索用时 810 毫秒
1.
中关铁矿帷幕灌浆孔设计深度深、钻孔垂直度要求高，加之地质条件、水文条件的特殊性和复杂性，钻孔偏斜超标严重，经过实践，摸索出一套有效的防斜、纠斜技术措施。在分析孔斜原因的基础上，介绍了该工程的防斜、纠斜技术措施和取得的效果。 相似文献
2.
在强自然造斜地层的深孔勘察施工中，孔斜问题一直是影响钻孔质量和勘察成果质量的重要因素。以穿越恒山山脉铁路隧道深孔勘察为例，介绍了在自然造斜严重的片麻岩地层中采用有效钻孔防斜措施和螺杆钻具纠斜方法，保证了勘察钻孔的质量。 相似文献
3.
4.
5.
以某地下连续墙斜锚杆支护工程施工为例，介绍了斜锚杆桩的施工工艺，主要包括：斜锚杆的设计；施工设备的选择及机具设计；灌浆锚杆的施工工艺等。 相似文献
6.
7.
8.
镁斜磷铁锰矿产于四川某地含铍伟晶岩的中部，该伟晶岩分带性弱，但钠长石化发育，与之共生的矿物有镁电气石、蓝色绿柱石、石榴石、白云母、石英及黄铁矿等。镁斜磷铁锰矿为肉红色块状体，玻璃光泽，摩氏硬度５．５－６．０，比重３．８１，具（００１）解理，在单偏光下无色或带有灰色的白色，多色性弱，突起较高，Ｎｇ＝１．７３４，Ｎｍ＝１．７２８，Ｎ＿Ｐ＝１．６７５，Ｎｇ－Ｎ＿Ｐ＝０．０５９，斜消光，Ｒ＞Υ。镁斜磷铁锰矿的化学成分Ｗ（Ｂ）／％是Ｍｇｏ６．２ｌ．Ｃａｏ０．０７，Ａｌ＿２Ｏ＿３０．８ｉ，Ｓｉｏ＿２ｏ．３９，ＭｎＯｌ４．３６．Ｆｅｏ＿３５．４８，Ｐ＿２ｏ＿５４ｌ．８５，∑９９．１７。 相似文献
9.
10.
在河南省舞阳铁山矿区的勘察钻进中，采用液动潜孔锤钻进工艺解决了在倾角较大、软硬不均、互层频繁的条带状混合花岗岩地层中的钻探技术难题，提高了钻进效率，有效地防止了钻孔的偏斜。结合该工程实例介绍了液动潜孔锤钻进工艺以及所取得的效果。 相似文献
11.
Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
12.
13.
正20140634 Cao Lingmin(Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China);Xu Yi Finite Difference Tomography of the Crustal Velocity Structure in Tengchong,Yunnan Province(Chinese Journal of Geophysics,ISSN0001-5733,CN11-2074/P,56(4),2013,p.1159-1167,6illus.,35refs.,with English abstract) 相似文献
14.
正20140965Jia Gaowen(School of Earth Sciences,Lanzhou University,Lanzhou 730000,China);Liu Kenan Pod and Leaflet Fossils of Dalbergia(Leguminosae)from the Upper Miocene of Lincang,Yunnan Province(Acta Palaeontologica Sinica,ISSN0001-6616,CN32-1188/Q,52(2),2013,p.213-222,6 相似文献
15.
正20141520 Bo Ying(Key Laboratory of Metallogeny and Mineral Assessment,MLR,Beijing 100037,China);Liu Chenglin Saline Spring Hydrochemical Characteristics and Indicators for Potassium Exploration in Southwestern and Northern Tarim Basin,Xinjiang(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,34(5),2013,p.594-602,5 illus.,3 tables,28 refs.) 相似文献
16.
正20142599Chen Sanming(Guangxi Key Laboratory of Concealed Deposits Exploration,Guilin University of Technology,Guilin541004,China);He Yuzhou Block Model and Reserves Estimation of Panzhihua Iron Deposit Based on 3D Geological Modeling(Journal of Guilin University of Technology,ISSN1674-9057,CN45-1375/N,33(4),2013,p.610-615,9illus.,1table,15refs.) 相似文献
17.
正20140594 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410016,China);Zhong Xiang Faults in the Jingzhou Basin and Their Tectonic Settings(Geotectonica et Metallogenia,ISSN1001-1552,CN44-1595/P,37(2),2013,p.173-183,6illus.,59refs.)Key words:basin evolution,tectonic setting,South China In the Upper Paleozoic and Jurassic se- 相似文献
18.
正20141243Chen Ge(Hangzhou Research Institute of Petroleum Geology,PetroChina,Hangzhou 310023,China);Si Chunsong Study on Sedimentary Numerical Simulation Method of Fan Delta Sand Body(Journal of Geology, 相似文献
19.
正20141664 Abudoukerimu Abasi(Kashi Meteorological Bureau of Xinjiang,Kashi 844000,China);Wang Rongmei The Relationship with Woody Plants Phonological Variation Characters and Climatic Change from 1982to 2010in Kashi(Quaternary Sciences,ISSN1001-7410,CN11-2708/P,33(5),2013,p.927-935,8illus.,3 tables,48 refs.,with English abstract) 相似文献
20.
正20140958 Mei Huicheng(No.915GeologicalBrigade,Jiangxi Bureau of Geology and Mineral Resources,Nanchang 330002,China);Li Zhongshe Geological Features and Causes of the Huihuang Geotherm in Xiushui,Jiangxi Province(Journal of Geological Hazards and 相似文献