1.
Study on the Pore Structure of Coals and Characteristics of Gases Adsorption on Coals;
煤孔隙结构和煤对气体吸附特性研究
2.
EFFECT OF METHANOL EXTRACTION ON PORE CHARACTER OF DAYAN LIGNITE
甲醇萃取对大雁褐煤孔隙结构的影响
3.
boring machine for making drill holes in rock or coa
在岩石或煤上打孔用打孔机
4.
Identification of coal block tcxture with core and application
用钻孔煤心鉴别煤层煤体结构及其应用
5.
The new measuring method for distance of the gas drainage hole and seam permeability
瓦斯抽采孔孔距及煤层透气性的测定方法
6.
A Study of the Second Hole Sealing Method to Improve Gas Drainage in Coal Seams
煤层瓦斯抽放钻孔的二次封孔方法研究
7.
Study on Rational Borehole Space of Crossed Boreholes for Gas Pre-drainage
预抽煤层瓦斯交叉钻孔合理孔间距的研究
8.
Probe into Large Diameter Direct Drainage Borehole Construction Technology in North China Type Coalmines
华北型煤矿施工大孔径直排孔的工艺探讨
9.
Study on the Performance of Fly Ash and Coal Gangue Burned Porous Brick Masonry;
粉煤灰和煤矸石烧结多孔砖砌体性能研究
10.
Study on Technology of Soft Coal Seam Rib Spalling Preventing by Water Infusion with Shallow Holes
松软煤层煤壁浅孔注水防片帮技术研究
11.
Application of long-hole water injecting into coal seam at Changgouyu colliery
煤层长孔注水在长沟峪煤矿的试验研究
12.
Effects of Included Minerals in Pulverized Coals on the Pore Structure of Chars
煤粉中内在矿物对煤焦孔隙结构的影响
13.
Research and Application of In-seam Deep Borehole Construction Equipment and Technique in Pingdingshan No.10 Mine
平煤十矿本煤层深孔施工装备及工艺研究应用
14.
Pore Structure of Macerals from a Low Rank Bituminous
低变质烟煤有机显微煤岩组分的孔结构分析
15.
and control the productive schedule.
采取煤壁浅孔注水,控制生产进度;
16.
Comprehensive administration for shaft crevice water in Liujia Coal Mine
六家煤矿立井筒孔裂隙水的综合治理
17.
Experimental on the Basic Mechanical Behavior of Fly Ash Perforated Brick Masonry
粉煤灰多孔砖砌体基本力学性能试验
18.
Experimental Study on shear specimens of behavior of Coal Gangue Perorated Bricks Masonry
煤矸石多孔砖砌体抗剪性能试验研究