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  • slope blasting technique - gehirnjogging-ruhr.de

    slope blasting technique. Popular Searches. NIOSHTIC. Pre-split blasting is a primary technique for creating slopes with a minimum amount of unwanted damage to the remaining rock mass Rock slopes created in such a way have both safety-related and economic advantag The applications extend from road cuts to rock quarries to large open pit min...

  • Innovative Directional Controlled Blasting Technique

    Author: N. K. Bhagat, A. K. Mishra, M. M. Singh, Aditya Rana, P. K. Singh
  • RESEARCH ARTICLES Blasting technique for stabilizing ...

    2020-3-23  (FoS). In this article, a novel direction-controlled blasting technique for removing an unstable slope at Talegaon II of KR is discussed. The stated technique has been implemented on 101 unstable slopes without disturbing the routine train traffic. Study area Talegaon II cutting was excavated in 1994–95 and is one of the 564 cuttings along KR.

  • 【road_cut_slope】什么意思_英语road_cut_slope的翻译 ...

    At the same time, the cushion blasting technique is adopted nearby the road slope and a complete road cut slope is shaped. 同时,临近 设计 边坡 采用 缓冲 爆破 技术,爆 后 形成 了稳定的 路堑 边坡。 202.127.156.16 Slope protection of deep and wide road cut

  • A Novel Method to Evaluate the Effect of Slope

    The bench cast blasting effect includes many aspects, and it is difficult to take every factor into consideration. Considering the comprehensive evaluation index system of the step-blasting effect in previous research [16, 17, 25], 11 factors are selected as the evaluation indicators in this paper.Then, based on the results of 16 effective blasting operations conducted in [] and others from ...

  • Monitoring of Blasting Vibration on the High-steep Slope of ...

    When mining the hanging wall ore on high slope, blasting vibration needs to be monitored for slope safety. Based on the environment of the Wall Ore 2# mining in Daye Iron Mine of WISCO, a plan is designed that monitors the on-the-spot blasting vibration during the ...

  • Chapter 11 SPECIALIZED BLASTING TECHNIQUES

    2014-6-11  AVALANCHE BLASTING Slope testing, avalanche release, and snow stabilization are the main objectives for using explosives in avalanche blasting. To achieve these objectives, a standard charge is used that is capable of developing deto-nation pressure equal to 1 kg of TNT. Chapter 11 SPECIALIZED BLASTING TECHNIQUES

  • 文章详细信息 - CNKI

    According to the geological conditions of Guiyang Guangzhou railway GGTJ-2 DK120+692~ DK120+874 section,the improved slope control blasting technique is put forward based on the characteristics of smooth blasting and pre splitting blasting,combined with

  • 罗学东*-工程学院 - cug.edu.cn

    2020-5-5  [2] Optimization and application of deep hole blasting technique in hard rock, Ministry of Education, science and technology progress prize, Second Prize, 2005. (R3) [3] Disaster mechanism and control technology research of high-steep slope in underground to open-pit mine, Science and Technology Department of Hubei Province, science and technology progress prize in Hubei province,

  • (PDF) Design of controlled blasting (pre-splitting) in ...

    Pre-splitting is a controlled blasting technique with applications in open pit mines. The main objectives of pre-splitting in open pit mining are: preventing/controlling back-break; controlling ...

  • 【road_cut_slope】什么意思_英语road_cut_slope的翻译 ...

    At the same time, the cushion blasting technique is adopted nearby the road slope and a complete road cut slope is shaped. 同时,临近 设计 边坡 采用 缓冲 爆破 技术,爆 后 形成 了稳定的 路堑 边坡。 202.127.156.16 Slope protection of deep and wide road cut

  • A Novel Method to Evaluate the Effect of Slope

    The bench cast blasting effect includes many aspects, and it is difficult to take every factor into consideration. Considering the comprehensive evaluation index system of the step-blasting effect in previous research [16, 17, 25], 11 factors are selected as the evaluation indicators in this paper.Then, based on the results of 16 effective blasting operations conducted in [] and others from ...

  • A Geomechanical Classification for Slopes: Slope Mass ...

    1993-1-1  Controlled, bulk blasting/ripping Presplitting Natural slopes Hand wedging o 0.5 I 2 5 10 20 50 100 Age of excavation (year) Figure 2 Generalized 'relationship between excavation technique, age of excavation and seismically detectable disturbance (Swindells [12]) E g o -e '0 6 eu 5 4 Blasting IInterval x Average E en :. 3 '0 Q 2 ~I o -8 +8 ...

  • Stability Analysis of Cut Slopes Using Continuous

    2014-6-19  The wedge type of failure is common in all locations. The rock slope is being excavated using drilling and blasting technique. The uncontrolled blasting and drilling operation for excavations of slope lead to the failure of large size blocks . Blast-induced vibrations expand the zone of influence for failures replicating a controlled earthquake ...

  • Slope stabilisation techniques at Khao Laem dam,

    As a controlled blasting technique which can maintain slope stability, the pre split blasting has been widely used in the railway, highway, water conservancy constructions and mining.

  • Comparison of Presplit and Smooth Blasting Methods

    To understand differences of smooth and presplit blasting for the excavation of rock wells, two field experiments using these two techniques are implemented at the same test site, respectively. The ground vibrations induced by them have been monitored with the different distances through the corresponding devices. The vibration results illustrate that at the same monitoring distance and ...

  • Controlled blasting in an open-pit mine for improved

    A case study is presented where a controlled blasting programme (presplitting) was adopted in an open-pit copper mine in order to improve the stability of the resulting cut slopes. The aim was to reduce over break and minimize damage to the final pit walls from production blasts. The use of presplitting allowed considerably higher benches to be adopted with much steeper overall slope angles.

  • Understanding the connection between blasting and

    2019-1-1  When slope stability becomes an issue, a controlled blasting technique must be used to improve stability. There are a number of controlled blasting techniques that are used in the mining, construction, and tunneling industries. The most commonly used of these techniques is presplitting. However, there are issues related to presplitting that may ...

  • Stability Analysis and Design of Open- Pit Mine Slope in ...

    2015-12-7  slope that is still stable after mining is completed. It may be better while a slope fails within a short period of time after mining ending, which is the largest difference between mining slope and other permanent slope. Obviothis is alsously the maximum difficulty in the study and design of mine slope.

  • Geotechnical Engineering: Slope Stability

    2015-8-5  the slope and the limit equilibrium method can be applied readily. 6.3.1 Infinite Slopes in Dry Cohesionless Soils A typical section or “slice” through the potential failure zone of a slope in a dry cohesionless soil, e.g., dry sand, is shown in Figure 6-3, along with its free body diagram. The weight of

  • The Effect of Excavation Technique on Slope Stability ...

    Slope Stability. The stability of a slope depends to a great extent upon discontinuities (Fig. 1). Even in a carefully excavated slope stress relief may induce joint opening which allows ingress of water and plant roots to induce long-term decay (Fig. 1b). Rock excavation often requires blasting to break the rock before it can be excavated.

  • Effect of Underground Blasting on Surface Slope

    2020-7-5  Stability of surface slope is a big challenge when underground excavation carried out just below the slope by the conventional drilling and blasting method. Blasting generates huge intensity of dynamic loading in the surrounding rock mass. If the intensity of dynamic loading is high, then it may be one of the reason for the triggering of instability in the surface structures.

  • Blasting and controlling technique of danger rock

    Blasting and controlling technique of isolated and steep rock slope, differing from common blasting, have the special complexity. While, in the course of blasting design and implementation, the rock geology characteristic and environment should be sufficiently realized, and the scheme of blasting and valid protection measures should be established.

  • 大孔径光面爆破.doc - 豆丁网

    2012-11-14  大孔径光面爆破技术在高边坡岩体开挖中的应用罗大会 快速高质量开挖小台阶高边坡岩体,是岩石明挖施工中的一大难题。针对三峡工程导流明渠边坡开挖岩体复杂的地形地质情况,采用100mm 孔径光 面爆破技术,获得了良好的效果。

  • Experimental study and application of medium‐length

    When the medium‐length hole blasting of 1.8 to 2.5 m is carried out, the existing hole cut blasting methods have poor applicability to roadway blasting excavation of coal mines with complicated geological conditions. 2 Therefore, it is important to study the blasting mechanism of the medium and deep hole cutting under different conditions and ...

  • 微风化岩层爆破,slightly weathered rock blasting,音标,读音 ...

    2018-10-1  This article introduces key technologies of reserving rock partition wall and existing railway slope protection replacing wall type shelving protection,for carrying out the A-class rock controlled blasting in construction of electrified railway double track-thin layer rock mass pre-splitting demolition and partition wall directional blasting construction technique.

  • toe of slope 的翻译结果--cnki翻译助手

    For the firt time, the new stabilizing technique by layer and prefastening toe of slope are adopted. During building the Nanning Kunming railway, these new construction techniques are necessary for propbylaxis and treatment of geological hazards of landslides and high soft rock slopes , and much experience of these new techniques and suitable conditiors for their appreciatation have been made.

  • Australian Centre for Geomechanics Conference

    This technique should only be used if the risk on the operation is appropriately managed, and the mine is sufficiently shallow. An effective wall control technique relies on an effective trim blast. Observations highlight damage up to ten metres or more into the slope with poor blasting, if an ineffective wall control technique were to be applied.

  • Stability Analysis and Design of Open- Pit Mine Slope in ...

    2015-12-7  slope that is still stable after mining is completed. It may be better while a slope fails within a short period of time after mining ending, which is the largest difference between mining slope and other permanent slope. Obviothis is alsously the maximum difficulty in the study and design of mine slope.

  • Geotechnical Engineering: Slope Stability

    2015-8-5  the slope and the limit equilibrium method can be applied readily. 6.3.1 Infinite Slopes in Dry Cohesionless Soils A typical section or “slice” through the potential failure zone of a slope in a dry cohesionless soil, e.g., dry sand, is shown in Figure 6-3, along with its free body diagram. The weight of