CN102635389A - Method for gas drainage from high-position roadway coal seam containing shielded soft rock - Google Patents

Method for gas drainage from high-position roadway coal seam containing shielded soft rock Download PDF

Info

Publication number
CN102635389A
CN102635389A CN2012100970920A CN201210097092A CN102635389A CN 102635389 A CN102635389 A CN 102635389A CN 2012100970920 A CN2012100970920 A CN 2012100970920A CN 201210097092 A CN201210097092 A CN 201210097092A CN 102635389 A CN102635389 A CN 102635389A
Authority
CN
China
Prior art keywords
coal seam
drilling
roadway
drainage
drilling rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2012100970920A
Other languages
Chinese (zh)
Other versions
CN102635389B (en
Inventor
潘立友
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University of Science and Technology
Original Assignee
Shandong University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Priority to CN201210097092.0A priority Critical patent/CN102635389B/en
Publication of CN102635389A publication Critical patent/CN102635389A/en
Application granted granted Critical
Publication of CN102635389B publication Critical patent/CN102635389B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a method for gas drainage from a high-position roadway coal seam containing shielded soft rock. According to the method, before the coal seam is mined, a roadway is developed in a hard rock formation of the coal seam roof and is called a high-position roadway for short as being designed at the coal seam roof part. The well-developed roadway can be used for ensuring the stability of surrounding rock and enhancing the temporary support; then during the working surface mining, holes are drilled in the coal seam in the roadway of a working surface, and preliminary gas drainage is carried out; and finally, at the same time of the preliminary gas drainage, holes are drilled in the coal seam in the high-position roadway, self-drilling drill rods with a hollow structure are adopted in the drilling, small holes are processed in the sections where the self-drilling drill rods enter the coal seam, the self-drilling drill rods are kept in the drilling holes of the coal seam after drilling in the coal seam, and the gas drainage can be continuously carried out through the self-drilling drill rods. According to the method, the drainage is carried out in the high-position roadway, the characteristic of upward flow of gas is fit, and thus the drainage is convenient to realize. The hollow drill rods with holes are used for the drainage, the drilling holes can be prevented from being sealed by the shielded soft rock and further a good drainage effect is realized.

Description

Contain the high-order lane coal bed gas drainage method that shields soft rock
Technical field
The invention belongs to the coal mining technical field.
Background technology
It is one of new problem of coal mining that coal and gas are adopted altogether.
Gas drainage under suction is at present mainly played common boring and is carried out this extraction in the service tunnel in this coal seam.In gas drainage under suction, along with mining depth increases, the effect of gas drainage under suction and strata structure and lithology are closely related.For the coal bed gas drainage poor effect of soft rock top board, mainly be that the crack of incompetent bed is closed easily at present, shielding action is arranged, effective gas drainage method is not also found in the coal seam that contains soft rock.
Therefore to the gas drainage under suction under many structures, big buried depth, the soft condition in rock stratum, need a kind of effective drainage method of invention.
Summary of the invention
The objective of the invention is to propose a kind of extraction job practices satisfactory for result to containing the unfavorable present situation of gas drainage under suction effect that shields soft rock at present.
Technical scheme of the present invention is:
A kind of high-order lane coal bed gas drainage method that shields soft rock that contains, step is following:
The first step: the high-order lane of constructing
Before the seam mining, development work in the hard formation of roof is so because design is called for short high-order lane at the top, coal seam, the tunnel that developing is good will guarantee adjoining rock stability, strengthens temporary lining;
Second step: conventional boring extraction
During working face mining, at first in work plane service tunnel to coal bed drilling, tentatively draw out methane;
The 3rd step: when tentatively drawing out methane; To coal bed drilling, adopt the drilling rod of brill certainly of hollow structure in high-order lane during boring, and in that section processing in the entering coal seam of drilling rod certainly aperture; Pierce behind the coal seam certainly drilling rod and stay in the coal bed drilling, proceed extraction through drilling rod certainly.
Structure from boring drilling rod is made up of hollow steel tube, adopts between one meter one joint of length, joint and joint to be threaded, and is connected with the also last some apertures of brill of drill bit on the first segment.
Good effect of the present invention is:
1, because extraction in high-order lane meets the characteristic that gas upwards flows, institute is so that extraction.
2, utilize hollow and have the drilling rod extraction of aperture, be not afraid of and contain shielding soft rock sealing boring, extraction is effective.
Description of drawings
Below in conjunction with description of drawings enforcement of the present invention.
Fig. 1 is high-order lane and conventional borehole pattern;
Fig. 2 be high-order lane borehole pattern '
Fig. 3 is from boring the jackrod structure sketch map.
The specific embodiment
A kind of high-order lane coal bed gas drainage method that shields soft rock that contains, step is following:
The first step: the high-order lane of constructing
Before the seam mining, development work in the hard formation of roof, so because design is called for short high-order lane at the top, coal seam, the tunnel that developing is good will guarantee adjoining rock stability, strengthens temporary lining, high-order lane is arranged as shown in Figure 1;
Second step: conventional boring extraction
During working face mining, at first in work plane service tunnel, play conventional boring to the coal seam, tentatively draw out methane, drill holes is as shown in Figure 1;
The 3rd step: when tentatively drawing out methane; In the high-order lane of top board to coal bed drilling; Adopt the drilling rod of brill certainly of hollow structure during boring, and in that section processing in the entering coal seam of drilling rod certainly aperture, pierce behind the coal seam certainly drilling rod and stay in the coal bed drilling; Proceed extraction through drilling rod certainly, drill holes is as shown in Figure 2.
Structure from boring drilling rod is as shown in Figure 3, mainly is that hollow steel tube is formed, and adopts between one meter one joint of length, joint and joint to be threaded, and is connected with the also last some apertures of brill of drill bit on the first segment.

Claims (1)

1. one kind contains the high-order lane coal bed gas drainage method that shields soft rock, it is characterized in that step is following:
The first step: the high-order lane of constructing
Before the seam mining, development work in the hard formation of roof is so because design is called for short high-order lane at the top, coal seam, the tunnel that developing is good will guarantee adjoining rock stability, strengthens temporary lining;
Second step: conventional boring extraction
During working face mining, at first in work plane service tunnel to coal bed drilling, tentatively draw out methane;
The 3rd step: when tentatively drawing out methane; To coal bed drilling, adopt the drilling rod of brill certainly of hollow structure in high-order lane during boring, and in that section processing in the entering coal seam of drilling rod certainly aperture; Pierce behind the coal seam certainly drilling rod and stay in the coal bed drilling, proceed extraction through drilling rod certainly;
Describedly forms by the more piece hollow steel tube from drilling rod, adopt between one meter one joint of length, joint and joint to be threaded, be connected with the also last a plurality of apertures of brill of drill bit on the first segment.
CN201210097092.0A 2012-03-26 2012-03-26 Method for gas drainage from high-position roadway coal seam containing shielded soft rock Expired - Fee Related CN102635389B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210097092.0A CN102635389B (en) 2012-03-26 2012-03-26 Method for gas drainage from high-position roadway coal seam containing shielded soft rock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210097092.0A CN102635389B (en) 2012-03-26 2012-03-26 Method for gas drainage from high-position roadway coal seam containing shielded soft rock

Publications (2)

Publication Number Publication Date
CN102635389A true CN102635389A (en) 2012-08-15
CN102635389B CN102635389B (en) 2014-11-12

Family

ID=46619950

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210097092.0A Expired - Fee Related CN102635389B (en) 2012-03-26 2012-03-26 Method for gas drainage from high-position roadway coal seam containing shielded soft rock

Country Status (1)

Country Link
CN (1) CN102635389B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104100292A (en) * 2014-07-31 2014-10-15 山西潞安环保能源开发股份有限公司 Regional forced gas extraction method for single low-permeability outburst thick coal seam
CN104847401A (en) * 2015-04-30 2015-08-19 贵州盘江精煤股份有限公司 Regional coal and gas outburst coal seam coal face outburst preventing and controlling method
CN108798758A (en) * 2017-04-28 2018-11-13 煤科集团沈阳研究院有限公司 Along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique
CN109252888A (en) * 2018-08-15 2019-01-22 河南铁福来装备制造股份有限公司 The process of cave shielding driving is made in a kind of lane directional drilling of a coal mine high position
CN109356641A (en) * 2018-10-25 2019-02-19 四川大学 A kind of soft country rock Gas Full-Mechanized Caving Face pumping method
CN111075502A (en) * 2020-02-18 2020-04-28 太原理工大学 Method for preventing coal mine water and gas spray holes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997046786A1 (en) * 1996-06-04 1997-12-11 The University Of Queensland A drilling apparatus and method
CN101634231A (en) * 2009-05-31 2010-01-27 山西晋城无烟煤矿业集团有限责任公司 Method for reinforcing and sealing coal mine and preventing gas
CN201896632U (en) * 2010-12-10 2011-07-13 淮南矿业(集团)有限责任公司 Drilling well for gas drainage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997046786A1 (en) * 1996-06-04 1997-12-11 The University Of Queensland A drilling apparatus and method
CN101634231A (en) * 2009-05-31 2010-01-27 山西晋城无烟煤矿业集团有限责任公司 Method for reinforcing and sealing coal mine and preventing gas
CN201896632U (en) * 2010-12-10 2011-07-13 淮南矿业(集团)有限责任公司 Drilling well for gas drainage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
罗文柯: "上覆巨厚火成岩下煤与瓦斯突出灾害危险性评估与防治对策研究", 《工程科技Ⅰ辑》, no. 2, 28 February 2012 (2012-02-28) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104100292A (en) * 2014-07-31 2014-10-15 山西潞安环保能源开发股份有限公司 Regional forced gas extraction method for single low-permeability outburst thick coal seam
CN104100292B (en) * 2014-07-31 2017-04-12 山西潞安环保能源开发股份有限公司 Regional forced gas extraction method for single low-permeability outburst thick coal seam
CN104847401A (en) * 2015-04-30 2015-08-19 贵州盘江精煤股份有限公司 Regional coal and gas outburst coal seam coal face outburst preventing and controlling method
CN108798758A (en) * 2017-04-28 2018-11-13 煤科集团沈阳研究院有限公司 Along top major diameter concordant hole pumping and mining goaf and gas at upper corner technique
CN109252888A (en) * 2018-08-15 2019-01-22 河南铁福来装备制造股份有限公司 The process of cave shielding driving is made in a kind of lane directional drilling of a coal mine high position
CN109356641A (en) * 2018-10-25 2019-02-19 四川大学 A kind of soft country rock Gas Full-Mechanized Caving Face pumping method
CN111075502A (en) * 2020-02-18 2020-04-28 太原理工大学 Method for preventing coal mine water and gas spray holes

Also Published As

Publication number Publication date
CN102635389B (en) 2014-11-12

Similar Documents

Publication Publication Date Title
CN104863629B (en) A kind of method taking out absciss layer gas and draining slip casting under overlying strata using combined drilling and counterboring
CN102635389B (en) Method for gas drainage from high-position roadway coal seam containing shielded soft rock
CN101275469B (en) Yolk coal rock formation downward hole pumping and mining pressure relief mash gas construction method
CN103967472B (en) A kind of coal bed gas staged fracturing horizontal well enhanced gas extraction method
CN102979498B (en) A kind of multi-lateral horizontal well system for coal bed gas
CN102080518B (en) Method for extracting gas from coal seam roof complex branched well
CN104131831A (en) Coal-bed gas well vertical three-dimensional united extraction method
CN102392678A (en) Gas drainage method combining surface and underground fracturing and permeability improvement
CN103016047B (en) Method of draining gas in gob through long drill hole in roof trend on fully mechanized caving face
CN102022133B (en) Regional gas underground high-pressure jet hole digging, pressure relief and outburst prevention method
CN103362539A (en) Method for extracting pressure relief gas by retained roadway drill site drilling
CN102852490A (en) High gas suction and discharge process method for complex well
US7493951B1 (en) Under-balanced directional drilling system
CN104975868A (en) Top plate high-position boring large-diameter long-drill-hole gas extraction method based on directional drilling
CN108316964A (en) A kind of low air permeability coal seam pressure relief gas pumping mining method
CN104847263A (en) Coal bed methane far-end butt joint horizontal well drilling method
CN103422813B (en) Individual well eye multi-lateral horizontal well system for coal bed gas and boring method
CN108180035A (en) The gas pumping method that high gassy and low permeability coal seam drills with anti-reflection integration of operation
CN110397428B (en) Displacement coalbed methane yield increasing method for coalbed methane jointly mined by vertical well and U-shaped butt well
CN103742127A (en) Drill-hole television detection determination method for heights of overlying-strata caving zone and diversion fissure zone
CN108643960A (en) A kind of ground region band coal mine gas extinction technique
CN104895498A (en) Drilling and completion integration device and method using coiled tubing carrying sieve tubes for sidetracking
CN107620581A (en) The construction method of the dual-purpose mine shaft inspection hole of one well
CN108301866B (en) Mining of closed distance coal seam group adjacent layer gas pressure relief directional drilling stops pumping method
CN106050234A (en) Construction technique for protecting underground water in coal mining process

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141112

Termination date: 20160326

CF01 Termination of patent right due to non-payment of annual fee