超前锚杆

岩爆强烈的开挖面，采用超前锚杆预支护，锁定前方的围岩。

Working face with strong rock outburst shall be pre-supported by advance anchor bolt so as to lock the front surrounding rock .

通过对力学模型的研究，分析了超前锚杆预支护结构的力学机制及其上部碎块体的应力状态、超前锚杆的受力状态和垂直于超前锚杆断面成拱的解析解。

The pre support mechanism of forepoling bolt structure and stress distribution of its upper broken rock , loading state of forepoling bolt and solution of arching in the cross section of tunnel are discussed .

基于DDA理论对超前锚杆加固在破碎带工程围岩起销钉作用机理研究

Study on pilot bolt reinforcement with dowelling function in project surrounding rocks of broken zone base on DDA theory

破碎带工程围岩超前锚杆加固外插角研究

Study on setting angle of bolt forepoling in surrounding fractured rock

超前锚杆预支护机理的力学模型研究

Study on the mechanical model in pre support mechanism of forepoling bolt

超前锚杆在软岩中的加固作用机理及其应用

Application and Reinforcement of the Fixing Bolt Before Digging Roadway in Soft Rock

超前锚杆预支护在过断层破碎带施工中的应用

Ahead Bolt Pre-support at Fracture Zone Construction

样条权函数神经网络算法在超前锚杆加固方式中的应用研究

Application Study on Forepoling Bolt Parameters with Algorithm of Spline Weight Function Artificial Neural Network

超前锚杆短循环法在砂砾石隧洞挂口施工中的应用

Application of Advanced Anchor Short Cycle Method to Constructing Tunnel Branch Portal in Sandy and Gravel Formation

在文献〔1〕、〔2〕、〔3〕基础上建立了超前锚杆预支护机理的力学模型。

Based on the references , the mechanical models are created to study the pre support mechanism of forepoling bolt structure .

为此，施工中根据软岩的地质特点及尾水隧洞开挖的断面尺寸，采取分层开挖和超前锚杆的施工方式和型钢拱架进行一次支护。

According to geological features of the soft rock and the size , the construction methods of stratified excavation and anchor pole in advance were taken , and structure steel frames were used for the first support .

为深入研究此复合土钉支护的工作机理，采用二维分离式有限元模型，由摩擦接触模拟土体与土钉和超前锚杆之间的接触。

To study the working principle of this kind of composite soil-nailed retaining wall , a discrete two-dimensional ( 2-D ) finite element model is developed . The contact behaviors between nails or bolts and soil are simulated by friction contact .

超前围壁锚杆支护结构的模拟试验研究

Simulation Test of Rockbolt Structure Installed at the Periphery of Roadway for Forepoling

超前支护锚杆锚固后与顶板岩石构成一体，这样使超前锚杆形成组合梁作用，放炮后，能够阻止顶板岩石冒落。

Forward support bolt combined with roop rock by bolting can play a roll of combined beam , which can prevent roof rock caving immediately after explosion .

超前钢管桩预应力锚杆复合土钉墙支护是一种新型的支护技术，是采用钢管桩、预应力锚杆与土钉的联合支护形式。

It is a new kind of support technology that combines of the steel pipe pile , prestressed anchor and soil nailing .

目前常用的超前锚固措施有超前锚杆、小管棚、大管棚及预固结等。

Currently used advanced bolt anchor measures are advanced rod , tubular tents , and pre-consolidation etc.

对不良地质条件下采用TBM进行隧洞掘进所遇到的困难进行了分析，就如何实施超前支护（如预灌浆处理、超前锚杆等）工艺和技术要点做了初步探讨。

Finally , summarizing the problem faced by the construct of the TBM in the tunnel excavation ; and discuss the technics of the forepoling ( pre-grout 、 advanced anchor ) construction .

文章在研究超前支护机理的基础上，在马河煤矿-150m水平南大巷中段应用了超前锚杆支护技术。

On the article basis in the mechanism studying the advance shoring , the middle piece has applied the advance rockbolt shoring technology to Ma He coal mine-150 ms level Nanjing University alley .