نتایج جستجو برای: rock engineering system

تعداد نتایج: 2446075  

Journal: :Sustainability 2022

This paper proposed a modified Rock Mass Rating (RMR) system, the RMRHLW for evaluating rock quality of High-level Radioactive Waste (HLW) geological disposal engineering. Some salient factors, including weakening groundwater and temperature on uniaxial compressive strength, continuity index values, geostress, permeability, chemical properties, were further incorporated based widely used RMR sy...

Journal: :Landslides 2022

Abstract The main purpose of the present study is to develop a debris flow susceptibility map mountain area (Susa Valley, Western Italian Alps) by using an upgraded version Bonetto et al. ( Journal Mountain Science 18, 2021) approach based on Rock Engineering System (RES) method. In particular, under investigation was discretized in 5 × 5-m grid which GIS-based analyses were performed. Starting...

Horizontal directional drilling (HDD) is widely used in soil and rock engineering. In a variety of conditions, it is necessary to estimate the torque required for performing the reaming operation. Nevertheless, there is not presently a convenient method to accomplish this task. In this paper, to overcome this difficulty based on the basic concepts of rock engineering systems (RES), a model for ...

2011
Kevin Foye

Geomembranes are an important component of modern engineered barriers to prevent the infiltration of stormwater and runoff into contaminated soil and rock as well as waste containment facilities--a function generally described as a geomembrane cover. This paper presents a case history involving a novel implementation of a geomembrane cover system. Due to this novelty, the design engineers neede...

2015
Jun Li Zong-lin Wang

In the tunnel construction, due to the limitation of the survey and design and the complex dynamics of tunnel surrounding rock geological conditions, so it is difficult for complex geology with the microscopic accurate grasp, often which caused by geological exploration data do not tally with the actual situation, often encountered in karst water inrush, large deformation in weak rock, cave-in ...

One of the most important effective parameters in design of engineering structures is deformability of rock mass. Benchmark of rock mass deformability is the deformation modulus that directly or indirectly obtained. Since the determination of rock mass deformation modulus indirect method by in-situ tests is time-consuming, costly and difficult from executive operations aspect, so it’s correctly...

2015
Xiaobo Xiong

With the development of economic construction, underground space development continues to move towards the deep. "More, long, big, deep," will be the general trend of the development of underground engineering in the 21st century. Rock burst is a kind of sudden geological disasters with a higher frequency in deep tunnel construction. Rock burst prediction has very important significance for the...

بخشنده امینه, حسن , مالکی نژاد, حمیدرضا,

The main aim of blasting operations in mining and civil engineering projects is size reduction of the rock-mass. Particle size reduction (P.S.R) affects the efficiency of the loading, haulage and milling equipments. Therefore, prediction of mean fragment size in designing optimum blasting patterns is crucial. In this research, a model is presented for predicting mean fragment size caused by bla...

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