CN110331989B

CN110331989B - Deep well construction exploitation layout method

Info

Publication number: CN110331989B
Application number: CN201910628681.9A
Authority: CN
Inventors: 何满潮; 王亚军; 李干
Original assignee: Beijing Zhongkuang Innovation Alliance Energy Environment Science Academy
Current assignee: Beijing Zhongkuang Innovation Alliance Energy Environment Science Academy
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-11-24
Anticipated expiration: 2039-07-12
Also published as: CN110331989A

Abstract

The invention discloses a deep well construction exploitation layout method, which comprises the following steps: developing a main well and an auxiliary well from the earth surface to the coal seam; according to the positions of the main well and the auxiliary well, an interconnection roadway communicated with the main well and the auxiliary well is developed in the coal seam; around the positions of the main and auxiliary wells and the communication roadway, an annular roadway is developed in the coal seam, and the main and auxiliary wells are communicated with the annular roadway through the communication roadway; and the main and auxiliary wells, the annular roadway and the communication roadway form an exploitation layout for well construction. The exploitation layout method for well construction effectively solves the problems of high tunnel excavation cost and waste of a large amount of coal resources in the prior art.

Description

Deep well construction exploitation layout method

Technical Field

The invention relates to the technical field of mining, in particular to a deep well construction exploitation layout method.

Background

The existing exploitation layout mode of coal mine generally excavates and arranges a roadway in a relatively stable rock stratum to form an exploitation area because the coal seam can not be entered, and then excavates an extraction roadway to form a working face, the roadway excavation amount is large in the process, so that the roadway excavation cost is high, and a large amount of coal pillars need to be left in the extraction roadway in the traditional coal mine exploitation, so that a large amount of coal resources are wasted.

Disclosure of Invention

The embodiment of the invention provides a deep shaft construction exploitation layout method, which aims to solve the problems of high tunnel excavation cost and waste of a large amount of coal resources in the prior art.

In order to achieve the purpose, the invention provides an exploitation layout method for well construction, which comprises the following steps: developing a main well and an auxiliary well from the earth surface to the coal seam; according to the positions of the main well and the auxiliary well, an interconnection roadway communicated with the main well and the auxiliary well is developed in the coal seam;

around the positions of the main and auxiliary wells and the communication roadway, an annular roadway is developed in the coal seam, and the main and auxiliary wells are communicated with the annular roadway through the communication roadway; and the main and auxiliary wells, the annular roadway and the communication roadway form an exploitation layout for well construction.

Further, the annular laneway is reserved in the area surrounded by the coal seam, and the area surrounded by the annular laneway serves as a protective coal pillar for the mining square.

And further, at least one or more of anchor rods, anchor cables and supports are adopted in the roadway of the annular roadway and the roadway of the connecting roadway for supporting.

Further, the method also comprises the following steps: and constructing the annular roadway to form a cutting hole, mining the coal by utilizing the cutting coal wall of the coal mining machine through the cutting hole, and retaining the roadway to form the roadway of the first mining working face in the coal mining process.

Further, the method also comprises the following steps: when the next working face is mined, the roadway of the previous working face close to the next working face is used as the roadway of the next working face, and the other roadway of the next working face is formed by roadway retaining in the coal mining process.

Further, the entry retaining is a roof cutting pressure relief gob-side entry retaining technology.

Further, the main well and the auxiliary well comprise a main well and an auxiliary well which are arranged in parallel at intervals, and the interval distance between the main well and the auxiliary well is 200-400 meters.

According to the exploitation layout method for well construction, the coal seam can be directly entered and the annular roadway can be exploited, so that compared with the prior art that a large number of roadways are exploited in a stable rock stratum, a large amount of excavation workload is saved, and the roadway excavation cost is effectively reduced; and because the annular roadway is excavated around the main and auxiliary wells and the communication roadway, the rest of the mining and excavating work is carried out on the basis of the annular roadway, and the exploitation layout can be matched with the annular roadway for mining and excavating, so that a large amount of coal pillars do not need to be reserved, and the problem of large waste of coal resources caused by coal mining in the prior art is solved.

Drawings

FIG. 1 is a schematic flow chart of a method for developing a well construction layout according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the position structures of a main well, an auxiliary well, a communication roadway and an annular roadway according to the embodiment of the invention;

FIG. 3 is a schematic structural diagram of the positions of a main well, an auxiliary well, a communication roadway and an annular roadway in a coal seam;

FIG. 4 is a coal mining schematic of a shaft construction of an embodiment of the present invention; and

FIG. 5 is a schematic illustration of coal mining in a coal seam for well construction according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and the examples, but without limiting the invention.

With reference to fig. 1 and fig. 2, according to an embodiment of the present invention, there is provided a deep well construction development layout method, that is, a development layout method for well construction, including the following steps:

step S10: developing a main well and an auxiliary well 1 from the earth surface to a coal seam;

step S20: according to the position of the main well and the auxiliary well 1, developing a communication roadway 3 communicated with the main well and the auxiliary well 1 in the coal seam;

step S30: around the positions of the main and auxiliary wells 1 and the communication roadway 3, an annular roadway 2 is developed on the coal seam (the overall arrangement shape of the annular roadway can be a circular ring shape, and can also be other shapes such as a rectangle, a square and the like, and the rectangular shape is shown in fig. 2), and the main and auxiliary wells 1 are communicated with the annular roadway 2 through the communication roadway 3 (the communication is realized by developing partial roadways at the coal seam);

step S40: the main and auxiliary wells 1, the annular roadway 2 and the communication roadway 3 form an exploitation layout of well construction.

The main and auxiliary wells 1 are developed from the surface to the coal seam, and in general, the main and auxiliary wells of the main and auxiliary wells 1 are spaced in parallel.

According to the exploitation layout method for well construction, the coal seam can be directly entered and the annular roadway can be exploited, so that compared with the prior art that a large number of roadways are exploited in a stable rock stratum, a large amount of excavation workload is saved, and the roadway excavation cost is effectively reduced; and because the annular tunnel 2 excavates around main and auxiliary shaft 1 and communication tunnel 3, the remaining exploitation tunnelling work is all gone on with annular tunnel 2 as the basis, and this kind of development overall arrangement can cooperate and excavate, so do not need a large amount of pillars of laying aside to establish, and then solved among the prior art and mined the coal resource a large amount of extravagant problems that lead to in the colliery.

It should be noted that the mining and excavation in the invention can adopt a roadway-free tunneling and coal-pillar-free coal mining method, two sets of working procedures of coal mining and excavation are thoroughly unified on the basis of a 110-method, and the excavation of one stoping roadway is changed into the excavation-free stoping roadway, so that the mining of N working faces is realized. The longwall mining method can realize the stoping of a plurality of working faces without tunneling stoping roadways in advance, gob-side entry retaining is realized by roof cutting and pressure relief in the mining process, the entry retaining position is a part close to the next working face, and the entry retaining becomes an upper gate way of the next working face.

Preferably, the annular laneway 2 is reserved in the area surrounded by the coal seam, and the area surrounded by the annular laneway 2 serves as a protective pillar for the mining square, which refers to the pillar between the annular laneway 2 and the main and auxiliary wells 1 and the communication laneway 3.

Because the annular roadway 2 and the connection roadway 3 are directly arranged in the coal seam, in order to realize safety protection, in the development layout method, anchor rods, anchor cables and supports are adopted in the roadway of the annular roadway 2 and the roadway of the connection roadway 3 for supporting.

Referring to fig. 3 and 4, the development layout method of the present invention further includes the following steps:

and constructing the annular roadway 2 to form a cutting hole, utilizing a coal cutter to cut a coal wall along the cutting hole to mine coal, and retaining a roadway to form a roadway 5 of a first mining working face in the coal mining process.

As can be seen from fig. 5, the face roadway 5 is designed to maximize coal mining, and further, all of the coal in the mining part is completely mined, thereby increasing the productivity.

Preferably, the layout development method further comprises the steps of:

step S51: when the next working face is mined, the roadway of the previous working face close to the next working face is used as the roadway of the next working face, and the other roadway of the next working face is formed by roadway retaining in the coal mining process. And the entry retaining is a roof cutting pressure relief gob-side entry retaining technology.

Step S52 coal mining is performed according to the development layout formed by the plurality of face lanes 5.

Referring to figure 5, typically a face 6 is formed between two face drives 5 and all of the face 6 makes up all of the area of the coal seam mining area so that all of the coal is mined by the roof cutting process and face drives 5.

Further preferably, the main and auxiliary wells 1 comprise main and auxiliary wells arranged in parallel at a spacing, the spacing between the main and auxiliary wells being between 200 and 400 meters. It should be noted that, referring to fig. 4 and 5, two adjacent face roadways 5 may form a face 6 (also a coal seam mining portion), so that the development layout is most reasonable and the working efficiency is higher.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and refinements can be made without departing from the basic principle of the invention, and these modifications and refinements are also considered to be within the protective scope of the invention.

Claims

1. A exploitation layout method for well construction is characterized by comprising the following steps:

developing a main well and an auxiliary well (1) from the earth surface to the coal seam;

according to the position of the main well and the auxiliary well (1), a communication roadway (3) communicated with the main well and the auxiliary well (1) is developed in a coal seam;

around the positions of the main and auxiliary wells (1) and the communication roadway (3), an annular roadway (2) is developed in a coal seam, and the main and auxiliary wells (1) are communicated with the annular roadway (2) through the communication roadway (3);

the main well and the auxiliary well (1), the annular roadway (2) and the communication roadway (3) form an exploitation layout for well construction.

2. The development layout method according to claim 1, characterized in that the ring-shaped drifts (2) are reserved in the area enclosed by the coal seam, and the area enclosed by the ring-shaped drifts (2) serves as a protective pillar for the mining square.

3. The development layout method according to claim 1, characterized in that at least one or more of anchor rods, anchor cables and brackets are used for supporting in the roadway of the ring roadway (2) and in the roadway of the communication roadway (3).

4. The exploitation layout method according to claim 1, further comprising the steps of:

and constructing the annular roadway (2) to form a cutting hole, utilizing a coal cutter to cut a coal wall along the cutting hole to mine coal, and retaining a roadway to form a roadway (5) of a first mining working face in the coal mining process.

5. The exploitation layout method according to claim 4, further comprising the steps of: when the next working face is mined, the roadway of the previous working face close to the next working face is used as the roadway of the next working face, and the other roadway of the next working face is formed by roadway retaining in the coal mining process.

6. The development layout method according to claim 5, wherein the entry retaining is a cut-top pressure relief gob-side entry retaining technique.

7. The development layout method according to claim 1, characterized in that the primary and secondary wells (1) comprise parallel spaced primary and secondary wells, the spacing distance between the primary and secondary wells being between 200 and 400 meters.