A method for mining without coal pillars with roof cutting and entry retaining
A mining method and technology without coal pillars, applied in ground mining, mining equipment, earthwork drilling and mining, etc., can solve problems such as prolonging mine construction time, increasing investment funds, and difficulty in meeting requirements, so as to reduce roadway engineering volume, reduce costs, The effect of shortening the construction period
Active Publication Date: 2021-10-08
王炯
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Problems solved by technology
[0004] However, in the existing technology, in order to meet the requirement of using the "110" construction method to retain two lanes, it is necessary to excavate four along-trough lanes at the initial stage of mining to form three working faces to meet the roadway layout requirements and related safety measures, prolonging the mine construction time According to the current mining method, it is difficult to design only one mining face at the initial stage of mining to meet the requirements of using the "110" construction method to retain two lanes
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[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0030] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for...
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The present application relates to the technical field of coal mining, in particular to a coal pillar-free mining method with roof cutting and roadway retention. It includes the following steps: constructing a gas drainage roadway and eliminating outbursts in the area of the working face along the transport channel and the working face's track along the channel; One end of the track along the working face is connected to the return air alley, and the other end is connected to the gas extraction alley through the first process alley. Drainage roadway; the working face recovery forms a roadway section, which is connected with the gas drainage roadway through the first process roadway and the second process roadway to form a ventilation system. Make full use of the existing gas drainage roadway to meet the roadway layout requirements using the 110 construction method, increase the use function of the roadway and increase the reuse rate of the roadway, reduce the amount of roadway engineering before putting into production, shorten the construction period, and reduce costs.
Description
technical field [0001] The present application relates to the technical field of coal mining, in particular to a coal pillar-free mining method with roof cutting and roadway retention. Background technique [0002] With the continuous increase of the mining depth of coal resources, the gas content and gas pressure of coal seams continue to increase, and the danger of coal and gas outburst is becoming more and more serious. For coal seams with a risk of coal and gas outburst, arranging gas drainage lanes in the top (or bottom) slate lanes, and pre-draining coal seam gas from coal seam strips through drilling holes through the construction layer is one of the main regional outburst prevention measures. [0003] The "110" construction method of top cutting and pressure relief without coal pillars is an advanced mining technology without coal pillars, and it is one of the key technologies to maintain the sustainable development of coal resources in my country. It is an important...
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IPC IPC(8): E21C41/18E21F1/00E21F1/10
CPCE21C41/18E21F1/006E21F1/10E21F16/00E21F1/00E21F1/14
Inventor 王炯李文飞马资敏于光远
Owner 王炯