Application Demonstration of Multilayer Groundwater Monitoring Technology
PAN De-yuan;Center for Hydrogeology and Environmental Geology Survey;CGS;

..............page:1-4

Discussion on Application of Air Reverse Circulation Drilling in Shallow Sampling for Geological Prospecting
SHI Li-ming;The Gold Headquarters of Chinese People Armed Police Forces;

..............page:5-9

Study and Practice of Drilling Fluid for Yudaokou Oil Shale Mine Area
YU Bao-guo;GENG Yin;YU Zhi-jian;ZHOU En-bo;BU Fan;The Fourth Geological Team of Hebei Provincial Bureau of Geological Exploration and Mineral Development;

..............page:10-13

he nan sheng di kuang ju huan jing er yuan shen bu di re zuan tan zai chuang jia ji
xing xiang qu ; yan shan shan ;

..............page:13

Leakage Prevention of Drilling Fluid in Soluble K- Mg Salt Deposit of Laos and the Processing Technology
BAI Bao-yun;XU Qing-hai;WU Li-lin;LIU Wei-peng;The Nuclear Industry Geological Bureau of Qinghai Province;the First Geological Exploration Brigade;The Institute of Exploration Techniques;CAGS;

..............page:14-16

Discussion on Optimization of Reaming Grading Design of Large Diameter Gas Drainage Well Construction
YUAN Zhi-jian;XIONG Liang;Henan Provincial Energy Drilling Engineering Technological Research Center;Coalfield Geology Bureau of Henan Province;

..............page:17-19

Efficient Drilling Technology of Long Directional Borehole for Gas Drainage in the Medium Hard Coal Seam
YANG Hu-wei;XU Chao;DONG Meng-meng;ZHAO Jian-guo;MOU Pei-ying;KANG Qi-yue;Xi’an Research Institute;China Coal Technology & Engineering Group Corp;

..............page:20-23+27

Application of Multi-process Drilling Technology in Gas Drainage Borehole of Tashan Coal Mine
WANG Xin;YANG Wei-dong;ZHAN Qi-shuai;LIU Wei;WANG Tian-fang;Shandong Provincial Lunan Geo-engineering Exploration Institute;

..............page:24-27

Research and Analysis on Drilling-while-casing and Fracturing Drainage in Soft and Low Permeability Coal Seams
JI Qian-hui;Xi’an Research Institute of China Coal Technology & Engineering Group;

..............page:28-30+56

Construction Technology of Parameter Well for Shale Gas in Chongqing
XIANG Kun-ming;YIN Liang-xian;LI Sheng;ZHANG-Shu;Sichuan Coalfield Geology Bureau 137 Geological Team;

..............page:31-33

Development of GYD- 20 Drill with Full-hydraulic Dynamic Head
YANG Fu-wei;LU Jian-jun;Lianyungang Huanghai Machinery Co.;Ltd.;

..............page:34-36

ANSYS Simulation of Expandable Convoluted Tubing for Small Diameter Bore Prospecting and Experimental Analysis
CHEN Xiao-jun;SONG Gang;MENG Qing-hong;SHAO Yu-tao;ZHANG Hua-min;Henan Polytechnic University;The Institute of Exploration Techniques;CAGS;

..............page:37-40+45

Development of SPT- 1500 Trailer-rig and the Application
SONG Wei;SONG Qiu-feng;LV Long;CAO Jian-long;GENG Jian-pu;Hebei Jiankan Drilling Equipment Co.;Ltd.;

..............page:41-45

Sand Blast for Derrick and Anticorrosion Measures
ZHANG Xi-kun;TUO Rui;GAO Zhan-ting;JIN Yi-min;MA Hong-yue;Hebei Jiankan Drilling Equipment Co.;Ltd.;Xi’an Exploring Machinery Factory;

..............page:46-51

Impact of Decentralized Rings on Directive Rotary Steerable Drilling System
LV Jian;CAI Chong;YANG Gan-sheng;State Professional Lab of Scientific Drilling;China University of Geosciences;

..............page:52-56

Study on a New Type Self-sharpening Diamond Bit for Drilling in Hard-compact-slipping Formation
SHEN Li-na;RUAN Hai-long;LI Chun;WU Hai-xia;JIA Mei-ling;OUYANG Zhi-yong;Beijing Institute of Exploration Engineering;

..............page:57-59

Ground Subsidence Monitoring in Zhengzhou Section of Beijing- Guangzhou Railway and Protection Measures
XI Xin-hai;YAO Qing;WANG Xi-jun;Henan Engineering Research Center of Depth Exploration;No. 2 lnstitute of Geo-environment Survey of Henan;

..............page:60-62

Case Study on Consolidation of Soft Foundation with Vacuum Preloading
CHEN Li-wei;FAN Yi;WANG Feng-bo;SUN Bo;DU Xiao-ning;Tianjin Research Institute for Water Transport Engineering;MOT;Hunan Institute of Geological Survey;Tianjin Beiyang Survey and Design Institute of Water Transport and Conservancy Co.;Ltd.;Tianjin Haibin Engineering Survey and Design Co.;Ltd.;China Construction Engineering Design Group Co.;Ltd.;

..............page:63-66

Construction Practice of Revolving Bore Grouting Pile in Argillaceous Siltstone Area
LI Wang;Beijing Vibrlflotation Engineering Co.;Ltd.;

..............page:67-69

Technology of Exploration Ditch Blasting Beneath Frozen Ground
SUN Zong-xi;China University of Geosciences;Specialized Forces of College of CAPE;

..............page:70-72+76

Analysis on the Causes of High-speed Railway Tunnel Collapse and the Dealing Construction Technology
LI Xiao-jin;China Railway 14 Group Co.;Ltd.;

..............page:73-76

liu guang zhi yuan shi shi shi

..............page:76

Analysis on Surrounding Rock Stability of Diversion Tunnel in Joint Section of Deep-buried Fault
LIU Qiang;WU Wen-bing;DUAN Long-chen;Faculty of Engineering;China University of Geosciences;

..............page:77-80

nan hai jiu hao shen shui shou xiu : shou kou qian mi shui shen jing cheng gong wan zuan

..............page:80

Experience and Discussion of Safety Standardization Construction for Geological Core Drilling in Qinghai
LIANG Jian;CHEN Yong-ping;LIU Peng;The Second Geology and Mineral Exploration Institute of Qinghai Province;

..............page:81-84

kan tan suo shui ping dui jie jing ji shu zai he nan an peng tian ran jian kuang huo de xin tu po
chen xiao lin ;

..............page:84