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Underwater rock plug blasting construction method

A construction method and plug body technology are applied in the field of underwater rock plug blasting construction, which can solve problems such as unclean cleaning and achieve the effect of improving safety.

Active Publication Date: 2015-07-01
核工业井巷建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the reservoir performs its functions for power generation and water supply, it is often necessary to build a water intake or outlet of the tunnel at the bottom of the reservoir. The traditional method is to build a cofferdam. After this method is completed, the cofferdam must be cleaned, and the cleaning is not clean

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Embodiment: a construction method of underwater rock plug blasting, comprising

[0034] (1) Surveying and setting out, using the total station to accurately stake out, including the measurement of the underwater topographic map of the rock plug mouth outside the cave, the measurement and setting out of the rock plug body; the measurement of the underwater topographic map of the rock plug mouth, the ratio is 1:100-1:200, using Ultrasound and GPS positioning were retested.

[0035] (2) Select the position of the rock plug mouth and the slag accumulation pit, and arrange geological drilling holes at and around the rock plug body and slag accumulation pit, generally a total of 7-8 drill holes are arranged in the rock plug body and slag accumulation pit and nearby; According to the survey data, the stability of the rock plug body and the slag accumulation pit is analyzed, and the location with better geological conditions is selected as the location of the rock plug mouth an...

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PUM

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Abstract

The invention relates to a method for building a tunnel water taking opening or a water outlet in the bottom of a reservoir, in particular to an underwater rock plug blasting construction method. The method is achieved through the following technical schemes that the underwater rock plug blasting construction method includes the steps of 1, surveying and setting up, 2, selecting a rock plug opening and the position of a slag gathering pit, 3, processing a rock plug opening covering layer, 4, detecting the thickness of a rock plug body, 5, conducting geological sketch on the rock plug body cross section, rock plug body surrounding rock leakage analysis and rock plug body leaked water processing, 6, calculating the rock plug body safety thickness, 7, designing and arranging a rock plug body blasting scheme and 8, conducting blasting. By means of the method, it is avoided that a cofferdam is built in deep water, and the method is economical and safe.

Description

technical field [0001] The invention relates to a method for constructing a water intake or outlet of a tunnel at the bottom of a reservoir, in particular to an underwater rock plug blasting construction method. Background technique [0002] When the reservoir performs its functions to generate electricity and supply water, it is often necessary to build a water intake or outlet of the tunnel at the bottom of the reservoir. The traditional method is to build a cofferdam. After this method is completed, the cofferdam must be cleaned, and the cleaning is not clean. Contents of the invention [0003] The object of the present invention is to provide an underwater rock plug blasting construction method, which avoids the construction of cofferdams in deep water, and is economical and safe. [0004] The above-mentioned technical purpose of the present invention is achieved through the following technical solutions: a construction method for underwater rock plug blasting, compris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D3/04F42D1/00
Inventor 严克伍艾慧杨旭东阮仁酉王建伟
Owner 核工业井巷建设集团有限公司
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