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Method of filling fast excavation tunnel with hydrofracturing chemical expanding agent

A chemical expansion agent, hydraulic fracturing technology, applied in tunnels, earth-moving drilling, mining fluids, etc.

Inactive Publication Date: 2016-11-09
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the common drilling and blasting method is quite cumbersome in the actual production process. In addition, the excavation and discharge of water and gas exploration in advance in roadway excavation require more manpower, material resources and time, which makes the speed of roadway excavation still not optimistic

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  • Method of filling fast excavation tunnel with hydrofracturing chemical expanding agent
  • Method of filling fast excavation tunnel with hydrofracturing chemical expanding agent

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described below.

[0020] A method for filling a rapid excavation roadway with a hydraulic fracturing chemical expansion agent is implemented, and the method is carried out according to the following steps.

[0021] Step 1. Drill four holes on the excavation surface with a distance of 20-30m from the working face by using the water-exploring drill. The depth is about 100-500m. There are two main purposes of drilling, one is to explore water in advance, and the other is described in the following steps.

[0022] Step 2. Use a slotted drill to open a wedge-shaped slot every 4-7m in the edge drilled hole. From the bottom of the hole, the slots are respectively the first, the second, ... until the hole is reached, and the slotted drill is now It is widely used in this field, and its structure and performance are well known to those skilled in the art.

[0023] Step 3. Connect the water injection ...

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Abstract

The invention relates to a method of filling a fast excavation tunnel with a hydrofracturing chemical expanding agent. In normal production of underground rock engineering, water detecting boreholes bored in front to learn forward geological conditions are used, and related regulations of water detecting are strictly abided before boring. The boreholes are arranged in a fan shape, and the other is located in the middle. Multiple wedge-shaped grooves are formed in all the boreholes with a grooving drill, then water is injected at high pressure, and stress of water pressure in the wedge-shaped grooves acts in a concentrated mode to break integrity of surrounding rock. The characteristic that the size is increased when the expanding agent is coagulated is used, and a coagulator is injected after hydrofracturing, and cracks in the boreholes grown more completely. A related chemical solution is prepared according to chemical components of rock and is injected into the boreholes. Chemical reaction of the chemical solution and the surrounding rock can reduce mechanical strength of the rock. The boreholes needed by water detecting are used and combined with chemical and physical methods during practical application, and the purpose of fast excavation face pushing can be achieved.

Description

technical field [0001] The invention relates to a method for rapidly excavating a roadway, in particular to a technical scheme for filling the method water of a rapidly excavating roadway with a hydraulic fracturing chemical expansion agent. Background technique [0002] No matter in the coal mining process or in the tunnel excavation, the excavation of the roadway in the rock mass or coal rock mass is always accompanied by it. In most of the mining areas in my country, the drilling and blasting method is generally used in the rock roadway; the roadheader is generally used in the semi-rock roadway and coal roadway. In recent years, the promotion of smooth blasting technology and the use of high-power roadheaders have greatly accelerated the speed of roadway excavation. However, during the excavation process of rock roadways and semi-rock roadways, the strength and integrity of rocks still restrict the roadway excavation. A major factor in speed. In addition, the common dri...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B33/13E21D9/10E21B49/02
CPCE21B33/13E21B43/26E21B49/02E21D9/10
Inventor 季春旭刘东娜张彦斌杨永康郭泽峰张智敏
Owner TAIYUAN UNIV OF TECH
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