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A platform for research: civil engineering, architecture and urbanism
Construction method for shallow-buried unsymmetrical-pressure tunnel portal
The invention provides a construction method for a shallow-buried unsymmetrical-pressure tunnel portal, and relates to the technical field of tunnel construction. The construction method for the shallow-buried unsymmetrical-pressure tunnel portal comprises the following steps that S1, before construction, before a measurement portal excavation project is started, the following preparation work in the measurement aspect should be made: 1) portal earth surface rechecking; and 2) lofting a slope brushing line of the hole. S2, ground surface settlement observation pre-burying: selecting a firmly pre-buried datum point close to the top of the intercepting ditch, wherein the datum point is good in section intervisibility condition and convenient to measure, and measuring points are arranged on the axis of the tunnel and four points on each of the two sides of the tunnel along the ground. According to the method, the measurement work can be conveniently carried out in the follow-up construction process by carrying out the preparation work in the aspect of measurement before hole excavation construction, manpower and material resources are saved, the follow-up construction process can be conveniently and reasonably controlled by pre-burying the ground surface settlement observation device, and large errors of a project are avoided.
本发明提供一种用于浅埋偏压隧道洞口施工方法，涉及隧道施工技术领域。该用于浅埋偏压隧道洞口施工方法，包括以下步骤：S1.施工前测量洞口开挖工程开工之前，应做好如下测量方面的准备工作：1)洞口地表复核；2)洞口刷坡线放样。S2.地表沉降观测预埋在靠近截水沟顶选择一个断面通视条件较好、测量方便处预埋牢固的基准点，测点沿地面布置在隧道轴线及其两侧各4个点。通过在洞口开挖施工前进行测量方面的准备工作，方便在后续施工时进行测量工作，节省人力物力，通过预埋地表沉降观测装置，方便对后续施工过程进行合理的控制，避免工程出现较大的误差。
Construction method for shallow-buried unsymmetrical-pressure tunnel portal
The invention provides a construction method for a shallow-buried unsymmetrical-pressure tunnel portal, and relates to the technical field of tunnel construction. The construction method for the shallow-buried unsymmetrical-pressure tunnel portal comprises the following steps that S1, before construction, before a measurement portal excavation project is started, the following preparation work in the measurement aspect should be made: 1) portal earth surface rechecking; and 2) lofting a slope brushing line of the hole. S2, ground surface settlement observation pre-burying: selecting a firmly pre-buried datum point close to the top of the intercepting ditch, wherein the datum point is good in section intervisibility condition and convenient to measure, and measuring points are arranged on the axis of the tunnel and four points on each of the two sides of the tunnel along the ground. According to the method, the measurement work can be conveniently carried out in the follow-up construction process by carrying out the preparation work in the aspect of measurement before hole excavation construction, manpower and material resources are saved, the follow-up construction process can be conveniently and reasonably controlled by pre-burying the ground surface settlement observation device, and large errors of a project are avoided.
本发明提供一种用于浅埋偏压隧道洞口施工方法，涉及隧道施工技术领域。该用于浅埋偏压隧道洞口施工方法，包括以下步骤：S1.施工前测量洞口开挖工程开工之前，应做好如下测量方面的准备工作：1)洞口地表复核；2)洞口刷坡线放样。S2.地表沉降观测预埋在靠近截水沟顶选择一个断面通视条件较好、测量方便处预埋牢固的基准点，测点沿地面布置在隧道轴线及其两侧各4个点。通过在洞口开挖施工前进行测量方面的准备工作，方便在后续施工时进行测量工作，节省人力物力，通过预埋地表沉降观测装置，方便对后续施工过程进行合理的控制，避免工程出现较大的误差。
Construction method for shallow-buried unsymmetrical-pressure tunnel portal
一种用于浅埋偏压隧道洞口施工方法
LI XIAOLIANG (author) / XIN GUOJUN (author) / DONG LIGANG (author) / LIU KEYUAN (author) / YANG XUN (author)
2022-12-30
Patent
Electronic Resource
Chinese
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