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Method for non-blasting rock hole excavation construction of water grinding drill

A water-milling, non-blasting technology, applied in earth-moving drilling, mining equipment, tunnels, etc., can solve problems such as high cost and adaptability to polluted areas, and achieve no operation dust, low mechanical noise, and less interference with the surrounding environment. Effect

Active Publication Date: 2018-12-18
CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of poor adaptability and high cost of the sections with variable cross-section size of the shield tunneling method caused by the harmful waste produced by the drilling and blasting method of existing stone tunnel excavation, which pollutes the surrounding environment, and provides a construction method. Convenience, no need for large-scale construction machinery, and simple process of water mill drilling non-blasting stone square hole excavation construction method

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  • Method for non-blasting rock hole excavation construction of water grinding drill
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  • Method for non-blasting rock hole excavation construction of water grinding drill

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Embodiment Construction

[0024] The technical solutions of the present invention will be further elaborated and described below with reference to the accompanying drawings and specific embodiments.

[0025] A method for digging and constructing non-blasting stone square holes with water mill drilling, the construction method is applied to the emergency rescue project of Wolonggou Reservoir in Jiangjin District, Chongqing City, and the specific project overview is as follows:

[0026] The grouting flat hole on the left bank of the emergency rescue project of Wolonggou Reservoir in Jiangjin District, Chongqing City has a total length of 50m, a section size of 3.1m×4.1m, a floor slope of 1%, and a floor elevation of 966.73m, which is 3.70m above the dam crest. The project is located in the national 5A-level scenic area and belongs to the third category of dangerous dams. In order to overcome the disturbance caused by drilling and blasting on the original buildings and the impact of local tourism, and ensu...

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Abstract

The invention discloses a method for non-blasting rock hole excavation construction of a water grinding drill. The method of "peripheral drilling for core and cutting surrounding rock + central drilling and block splitting" is used for performing the tunnel non-blasting rock excavation method; under the original conditions without disturbing the surrounding rock, the water grinding drill is used to drill for core along the upper half hole designed contour line of the flat hole, and the diameter of the hole is 150-180mm, the drilling depth is 50-80cm, and the hole is drilled continuously to form a groove, so that the rock in the face and the surrounding rock of the mountain are separated to form an excavation outline, and at the same time, the temporary surface is provided for the separation of the rock in the face. The pre-splitting hole is drilled in the rock in the face by region, the pre-splitting hole is still drilled with the water-grinding drill, and the drilling depth is 50-80cm. The holes are arranged in layers from top to bottom. The rock on the face is divided into uniform blocks according to the rock hardness, and the specific block size can be determined according to the slag transport conditions and equipment. The invention provides the method for non-blasting rock hole excavation construction of the water grinding drill with convenient construction, no need for large construction machinery and simple process.

Description

technical field [0001] The invention belongs to the construction field of stone cave excavation, in particular to a method for excavating a non-blasting stone cave with a water mill. Background technique [0002] At present, when excavating stone caves at home and abroad, the methods usually adopted are mainly drilling and blasting method and shield method. Drilling and blasting method is a method of excavating rock by drilling, charging and blasting. This method has developed from the early days of drilling holes by manual hand drilling and hammering, detonating individual charge packs one by one with fire detonators, and developing rock drilling. Drilling with trolley or dobby drilling rig, applying blasting techniques such as millisecond blasting, pre-split blasting and smooth blasting. The drilling and blasting method will produce vibration, impact, noise and dust flying debris; toxic gas and other hazardous wastes will be produced, which will have a great impact on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/10E21D9/12
CPCE21D9/10E21D9/1053E21D9/106E21D9/12E21D9/03
Inventor 严海波陈亮辉李样陈咏梅李博
Owner CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD
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