Applicability of construction dewatering techniques for randomly fractured rock

IF 2 4区工程技术 Q3 ENGINEERING, GEOLOGICAL

Proceedings of the Institution of Civil Engineers-Geotechnical Engineering Pub Date : 2024-03-26 DOI:10.1680/jgeen.23.00005

Hisham T. Eid, Mohammed Z. E. B. Elshafie, Barry O'Sullivan, Mohamed E. Khalil, Alhassan Mahmoud, Reiner Stollberg

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引用次数: 0

Abstract

Through analysing a significant number of case histories, ranges of applications of dewatering techniques for randomly fractured rock are proposed in terms of the rock mass permeability and the required drawdown. The cases analysed, which cover a wide range of construction activities and associated dewatering depths, provide one of the most comprehensive studies of dewatering techniques on randomly fractured rock to date. Comparison of the ranges suggested for dewatering in fractured rocks with those developed for excavations in soils is presented. To fit the construction dewatering systems in rock, a modification is proposed for the drawdown diagram that is widely used in practice for soils, and for the limited available general recommendations presented for chalk. Consequently, recommendations are made to improve the procedure of designing and executing these systems. In addition, a dewatering technique is proposed, which allows for construction to proceed in a wet condition, taking into account rock shear strength and the excavation geometry.

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施工排水技术对随机破裂岩石的适用性

通过分析大量案例，从岩体渗透性和所需降水量的角度提出了随机断裂岩石脱水技术的应用范围。所分析的案例涵盖了广泛的施工活动和相关的脱水深度，是迄今为止对随机断裂岩石脱水技术最全面的研究之一。报告还对断裂岩石中的脱水范围与土壤挖掘中的脱水范围进行了比较。为了适应岩石中的施工脱水系统，对土壤中广泛使用的缩减图和白垩土中有限的一般性建议提出了修改意见。因此，建议改进这些系统的设计和执行程序。此外，考虑到岩石的抗剪强度和开挖几何形状，还提出了一种可在潮湿条件下施工的脱水技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Institution of Civil Engineers-Geotechnical Engineering 工程技术-地球科学综合

CiteScore

4.40

自引率

4.50%

发文量

审稿时长

3 months

期刊介绍： Geotechnical Engineering provides a forum for the publication of high quality, topical and relevant technical papers covering all aspects of geotechnical research, design, construction and performance. The journal aims to be of interest to those civil, structural or geotechnical engineering practitioners wishing to develop a greater understanding of the influence of geotechnics on the built environment.