rock parting

This paper analyses main facts that influence the caving and drawing characteristics of top-coal, such as underground deep , intensity and joint crack of coal seam ; layer relations , thickness and intensity of rock parting .

本文深入研究了煤层的埋深、强度和裂隙发育程度以及夹石层的层位、厚度和强度对综放面顶煤可放性的影响，运用数值与经验相结合的分类方法对顶煤进行了可放性分类。

Research on PDC bit for drilling in gravel interlayer.;

适用于砾石夹层钻进的PDC钻头

Application of jet grouting to treatment of PHC tube pile foundation on boulder mezzanine;

压力注浆处理孤石夹层上PHC管桩基础

The design and handle method are discussed of this type of pile after it encounteres boulder mezzanine under the pile end.

介绍大直径锤击沉管混凝土灌注桩在厦门某高层公寓工程中的应用 ,以及这种桩型在施工中遇孤石夹层后 ,桩端存在下卧软弱层时的设计处理方法。

Fracture mechanics analysis of pavement structure with a sandwich layer of unbound graded aggregate

级配碎石夹层路面结构的断裂力学分析

Study on Graded Granular-Flexible Base of High-type Highway;

高等级公路柔性基层（级配碎石）的研究

Gradation Design Method of Dense-graded Asphalt Stabilized Macadam Base

密级配沥青稳定碎石基层混合料级配设计方法

Research on Performance and Design Method of Unbound Aggregate Base;

级配碎石基层性能与设计方法的研究

The mechanism of granular transition layer crack preventing and construction application

级配碎石过渡层防裂机理及工程应用

Study on the application of graded broken stone base in high grade highway

级配碎石基层在高等级公路中的应用研究

Research on Component Design Method of Grade Macadam Mixture

级配碎石结构层配合比组成设计方法的研究

Study on the Material and the Performance of Dense-graded Asphalt Treated Base;

密级配沥青稳定碎石基层材料与性能研究

Study on Graded Gravel Subgrade Construction Technique of Qin-Shen Express Railway;

秦沈客运专线基床表层级配碎石施工技术研究

Research on Reasonalbe Cement Slurry Consistency of Cement Stablized Graded Crushed Stone Permeable Base;

水泥稳定级配碎石排水基层胶浆合理稠度研究

Study on the Shear Strength Design Standard of Granular Base;

级配碎石基层抗剪强度设计标准的研究

Analysis of construction technology with graded broken stone fill in top of subgrade for passenger dedicated line;

客运专线基床表层级配碎石填筑施工工艺分析

The Mechanical Properties of Asphalt Pavement with Unbound Aggregate Base

级配碎石基层沥青路面结构受力特性研究

Mix Proportion Design and Construction Technique Supervision of Asphalt Treated Base

沥青稳定碎石基层级配设计与施工工艺监控

Study on Determination Method of the Optimal Oil-Stone Rate of Open-graded Asphalt Treated Base

开级配沥青稳定碎石基层混合料设计方法研究

Research on Aggregate Gradation of Asphalt Treated (ATB-25) Base

沥青稳定碎石下面层(ATB-25)矿料级配研究

Application of Graded Crushed Stone Base on Yu-Zhan Expressway

级配碎石基层在渝湛高速公路中的应用

Design and Construction of Graded Broken Stone(Gravel) Flexible Base in Tibet Area

西藏地区级配碎(砾)石柔性基层设计与施工