破煤

根据水力破煤技术的广泛使用和水射流钻头在煤层中钻孔的作用特点，提出一种新的水力钻孔定向控制方案。

According to the extensive use of the technology of the breaking coal by the water power and the action characteristics of drilling hole by the water power in coal seam , this paper puts forwards a new scheme of the orientation control of water power drilling .

利用ANSYS/LsDyna对冲击破煤过程进行仿真，给定不同的冲击参数方案，经计算得到刀具冲劈煤壁时应力的变化结果。

Making use of the ANSYS / LS DYNA to simulate the process of coal impact , with different impact parameter schemes , stress result of impact blade in the coal body by computer 's calculation .

镐形截齿破煤截割力的计算及影响因素分析

Calculation and influence factor analysis on coal cutting force of pick

冲击式采煤破煤机理的研究

Study on Coal Breaking Mechanism of Coal Getting by Impact

冲击破煤过程中能量耗散的理论分析

Theoretical Analysis of Energy Dissipation during Coal Impact Cutting

冲击式采煤机刀齿形状对冲击破煤效果的影响

Experimental study on the tool shape of impact shearer

工作面高压注水膨胀破煤的数值模拟注入水泥的膨胀式套管封隔器

Numerical Simulation on Coal Breaking by High-pressure Water Injection cement-filled inflatable casing packer

冲击破煤时煤岩中应力场变化的实验分析

The Experimental Analysis On Variation of Stress field in Coal Rock During Impact Coal Cutting

坪湖矿井高压注水破煤实验简介

Experiment Introduction of Broken Coal with High-pressure Waterflood in the Pits in Pinghu Coal Mine

冲击破煤过程的计算机仿真

Computer Simulation on Coal Impact Process

冲击破煤参数的研究

Research on Parameters of Impact Coal-Cutting

同时论文还对高压水射流破煤机理进行了分析和论述。T标准较好地吻合。

In China , the high pressure water jet skill is quite new . T standard quite well .

从断裂力学的理论出发，建立了刀县切削破煤的基本力学模型。

Based on the theory of fracture mechanics , a basic mechanical model of coal cutting is established .

薄煤层综采工作面矿山压力破煤规律数值模拟分析

Numerical Simulation Analysis on Rock Pressure to Break of Coal Rule at Fully-mechanized Coal Winning Thin Seam Mining Face

根据刀具对冲击破煤过程的计算机仿真，得到了刀具各冲击参数对冲击破煤的影响规律并建立了相应的数学模型；

The effect of each impact parameter to its working process was studied and its mathematic model was built .

最后，在对破煤效果分析的基础上，指出了放顶煤开采法的适应性。

Last , based on the analysis of breaking result of the top coal , the suitability of caving top coal mothod is pointed out .

概括地介绍了冲击破煤技术的研究现状，指出了冲击采煤机机械系统及其刀具存在的一些问题。

The status of the impact coal technology was viewed combined with the matter of impact cutting coal machine and the research content and method have been reported .

看重分析了长壁采煤工作面煤壁应力特点和冲击劈裂式采煤的相互作用关系，提出了冲击破煤的作业方式。

The paper emphatically analyses the interaction between the wall stress characteristic and coal getting by impact on the longwall face , proposes the work pattern of coal breaking by impact .

本文首先论述了当前普遍采用的滚筒式采煤机的破煤机理和煤岩切削理论的发展情况，以及这些理论在生产实际应用中存在的问题，简要地介绍了冲击式破煤的落煤方法。

In this paper , I will firstly discuss the cutting mechanism of cylinder coal cutters which are used widely now days and the development of theory on rock and coal cutting .

另外本文还研究了冲击破煤过程中的能量耗散，冲击劈裂宽度以及有用能量和冲击力的关系等问题。

In addition , this thesis researches the dissipation of energy in process of compact mining , the split thickness of impact and the relationship between the useful energy and the impulsive force .

在中硬以上的较坚硬煤层进行煤体深孔高压注水，从而软化煤体硬度提高破煤速度，进而提高劳动生产率。

Coal body is watered by deep hole high pressure above mid-hard coal seam to soften the harder coal so as to improve the working efficience . It 's a new way for mechanization mining in harder seam .

结构尺寸的增大，可提高滚筒的转动惯量，起到飞轮的作用，即贮存能量，稳定转速，增强滚筒的破煤能力和抗载荷能力等。

When the structural size is magnified , the rotational inertia of drum is also increase just like the flywheel effect . It can keep the capacity , steady the rolling speed , boost the effect of coal and balance the load .