A method of compressed air energy storage using coal mine underground roadway
A compressed air energy storage and underground roadway technology, which is applied in mining equipment, earthwork drilling, mining equipment, etc., can solve the problems of high gas leakage risk and difficult maintenance, and achieve easy gas leakage, broad promotion and application prospects, and later The effect of convenient maintenance
Active Publication Date: 2021-03-26
CHINA UNIV OF MINING & TECH
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[0011] Purpose of the invention: For the shortcomings of the existing method of compressed air energy storage in rock tunnels or caves, aiming at coal mine underground roadways, a method of using compressed air energy storage in coal mine underground roadways is proposed to solve the high risk of gas leakage in the existing methods. The problem of difficult maintenance in the later period
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[0029] The present invention will be further explained below in conjunction with the accompanying drawings.
[0030] Such as figure 1 A method for storing compressed air energy by utilizing an underground tunnel in a coal mine, a method for storing compressed air energy by utilizing an underground tunnel in a coal mine, comprising the following steps:
[0031] Step 1: First, use the drilling sound wave method to conduct field tests on the original rock area 1 of the roadway to determine the loose area of the surrounding rock, and then perform high-pressure grouting reinforcement on the loose area of the surrounding rock in the original rock area 1 of the roadway to form the grouting reinforcement area 2 . The scope of grouting reinforcement can be slightly larger than the scope of the loose ring, such as figure 2 For the formed annular grouting reinforcement zone.
[0032] Step 2: Construct the reinforced concrete lining in the roadway. The cross section of the reinfor...
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A method for using a coal mine underground tunnel for compressed air energy storage: first reconstructing the cross section of the tunnel, specifically comprising: implementing high pressure grouting reinforcement of the rock mass surrounding the tunnel to form a large-range stable force-bearing layer; on the basis of the shape of the cross section of the tunnel, constructing a circular reinforced concrete lining, performing smoothing processing on the inner surface of the lining, and then attaching a rubber or steel lining layer; implementing grouting filling of the space between the original cross section of the tunnel and the reinforced concrete lining; then sealing both ends of the tunnel; and finally placing a flexible air storage bag inside the processed tunnel. In the work process, compressed air is stored and used by means of an air inlet pipe and an air outlet pipe connected to the flexible air storage bag. The present method provides a reliable, safe and easy to maintain method for using a coal mine underground tunnel for compressed air storage.
Description
technical field [0001] The invention relates to the field of compressed air energy storage power generation, in particular to a method for utilizing compressed air energy storage in coal mine underground roadways. Background technique [0002] Today, the problem of unbalanced power load in my country is becoming more and more prominent, and the seasons and even day and night changes vary greatly. Therefore, the storage and rational utilization of electric energy has attracted much attention. In order to solve the problem of large-scale storage of electric energy, countries around the world have spent huge manpower and financial resources and developed various energy storage methods, such as battery packs, flywheels, supercapacitors, superconducting electricity storage, etc., due to low efficiency and short life , inconvenient access, small energy storage capacity, high investment cost, etc., it is difficult to operate. Compared with other energy storage technologies, the c...
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IPC IPC(8): E21F17/16
CPCE21F17/16
Inventor 张凯邓康宇薛欣然马占国刘江峰
Owner CHINA UNIV OF MINING & TECH