【外文翻译】深井预注浆precementation of deep shafts.rar
【外文翻译】深井预注浆precementation of deep shafts,原文：precementation of deep shaftsabstractprecementation or pregrouting of deep shafts in south africa is an established technique to improve safety and reduce wa...
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原文档由会员 s020700640 发布
原文：PRECEMENTATION OF DEEP SHAFTS
ABSTRACT
Precementation or pregrouting of deep shafts in South Africa is an established technique to improve safety and reduce water ingress during subsequent sinking of the shaft.
The recent completion of several precementation projects for shafts deeper than 1000m has again highlighted the effectiveness of pre¬grouting of shafts utilising deep hole slim hole wireline techniques for drilling and conventional deep hole grouting techniques for precementation.
Precementation of deep shafts will:
Increase the safety of the shaft-sinking operation
Minimise water and gas inflow during shaft sinking
Minimise the time lost due to additional grouting operations during sinking of the shaft and hence minimise costly delays and standing time of shaft sinking crews and equipment
Provide detailed information of the geology of the proposed shaft site. Information on anomalies, dykes, faults as well as reef (gold bearing conglomerates) intersections can be obtained from the eva luation of cores of the precementation boreholes.
This information is important for the mine as well as the shaft-sinking contractor.
Provide improved rock strength for excavations in the immediate vicinity of the shaft area.
The paper describes precementation techniques recently applied successfully from surface and some conclusions for further considerations.
翻译：深井预注浆
摘要
南非深竖井预注浆是一项在掘进中提高安全性并减少矿井进水的成熟的技术。最近完成的几个对超过1000米深的竖井预注浆项目再次表明了利用深孔小眼钻井和注浆技术的成效。
深竖井预注浆技术有以下特点：
提高井下掘进施工安全；
尽量减少竖井掘进中水和气体的下沉；
尽量减少额外的灌浆作业期间的凿井损失时间，从而减少延误以及常设凿井人员和设备的时间；
提供了该井地质情况的详细信息。对异常信息，岩脉，故障以及岩石（含金砾岩）交叉口可通过预注浆钻孔的岩心进行评价；
此信息对矿山以及竖井承包商很重要；
提高该地区附近竖井掘进的岩石强度。
本文介绍了最近预注浆技术表面和深层次的一些应用成功点。
ABSTRACT
Precementation or pregrouting of deep shafts in South Africa is an established technique to improve safety and reduce water ingress during subsequent sinking of the shaft.
The recent completion of several precementation projects for shafts deeper than 1000m has again highlighted the effectiveness of pre¬grouting of shafts utilising deep hole slim hole wireline techniques for drilling and conventional deep hole grouting techniques for precementation.
Precementation of deep shafts will:
Increase the safety of the shaft-sinking operation
Minimise water and gas inflow during shaft sinking
Minimise the time lost due to additional grouting operations during sinking of the shaft and hence minimise costly delays and standing time of shaft sinking crews and equipment
Provide detailed information of the geology of the proposed shaft site. Information on anomalies, dykes, faults as well as reef (gold bearing conglomerates) intersections can be obtained from the eva luation of cores of the precementation boreholes.
This information is important for the mine as well as the shaft-sinking contractor.
Provide improved rock strength for excavations in the immediate vicinity of the shaft area.
The paper describes precementation techniques recently applied successfully from surface and some conclusions for further considerations.
翻译：深井预注浆
摘要
南非深竖井预注浆是一项在掘进中提高安全性并减少矿井进水的成熟的技术。最近完成的几个对超过1000米深的竖井预注浆项目再次表明了利用深孔小眼钻井和注浆技术的成效。
深竖井预注浆技术有以下特点：
提高井下掘进施工安全；
尽量减少竖井掘进中水和气体的下沉；
尽量减少额外的灌浆作业期间的凿井损失时间，从而减少延误以及常设凿井人员和设备的时间；
提供了该井地质情况的详细信息。对异常信息，岩脉，故障以及岩石（含金砾岩）交叉口可通过预注浆钻孔的岩心进行评价；
此信息对矿山以及竖井承包商很重要；
提高该地区附近竖井掘进的岩石强度。
本文介绍了最近预注浆技术表面和深层次的一些应用成功点。
