A high-strength composite ice pack and its temporary filling method

A composite ice bag and filling method technology, which is applied in the direction of filling, earth cube drilling, safety devices, etc., can solve the problems of low labor efficiency, too many process links, and high equipment requirements, so as to reduce coal mining costs, simple filling process, The effect of high labor efficiency

Inactive Publication Date: 2017-03-29
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing filling technology has too many process links, complex process, high equipment requirements, and a large amount of filling materials are consumed in production; the coal mining operation of the working face is affected during the filling operation; the overall labor efficiency is low, and the coal output per ton cost increase

Method used

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  • A high-strength composite ice pack and its temporary filling method
  • A high-strength composite ice pack and its temporary filling method
  • A high-strength composite ice pack and its temporary filling method

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Embodiment Construction

[0017] The present invention will be further described below with reference to the drawings and embodiments.

[0018] Such as Figure 1-2 As shown, a high-strength composite ice bag includes an ice bag 1, the ice bag 1 is connected to a quick freezer, and the ice bag 1 includes a temperature insulation layer 11, a high-strength silk fiber layer 12, a fiber reinforced plastic layer 13, and a water injection hole 14. And drainage holes 15, the temperature insulating layer 11 is the outer layer of the ice pack 1, the high-strength silk fiber layer 12 is the middle layer of the ice pack 1, and the fiber reinforced plastic layer 13 is the inner filling of the ice pack 1, A water injection hole 14 is reserved at the top end of the ice bag 1, and a drainage hole 15 is reserved at the bottom end of the ice bag 1.

[0019] A temporary filling method of a high-strength composite ice pack includes the following steps:

[0020] (1) Arrange ice packs at a certain interval behind the support of ...

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Abstract

The invention discloses a high-strength composite ice bag and a temporary filling method. The ice bag is connected with a rapid freezer, and comprises a thermal insulation layer, a high-strength silk chemical fiber layer, a fiber reinforced plastic layer, a water injection hole and a drainage hole, wherein the thermal insulation layer is an outermost layer of the ice bag; the high-strength silk chemical fiber layer is a middle layer of the ice bag; the fiber reinforced plastic layer is an internal filler of the ice bag; the top end of the ice bag is provided with the water injection hole; the bottom end of the ice bag is provided with the drainage hole. The temporary filling method of the ice bag comprises the following steps: (1) arranging the ice bags on the rear side of a working face support according to a certain inter-row space; (2) filling the ice bags by using mine water; (3) starting the rapid freezer to rapidly freeze water in the ice bags; (4) supporting a gob roof by the frozen ice bags at a rational inter-row space to realize filling of a gob. The high-strength composite ice bag is low in manufacturing cost, the filling process is simple, the coal mining cost is reduced, and the overall labor efficiency is high.

Description

Technical field [0001] The invention relates to a filling technology of a mine goaf, in particular to a high-strength composite ice bag and a temporary filling method thereof. Background technique [0002] The mined-out coal seam needs to be filled in the goaf. Filling mining method is a common method for mine roof management and "three under one up" coal mining. According to the filling power, the filling mining method can be divided into manpower filling, wind filling and dry powder filling. , Hydraulic filling, etc. Among them, hydraulic filling is the most widely used. In hydraulic filling, water-sand filling without cementing agent was initially used, and cemented filling was developed later, and the concentration of the filling body was gradually increased, and it was gradually developed to a high-concentration paste-like filling and paste. Body filling. However, the existing filling technology has too many process links, complex processes, high equipment requirements, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F15/00
CPCE21F15/005
Inventor 曹建涛来兴平崔峰单鹏飞
Owner XIAN UNIV OF SCI & TECH
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