WO2016107435A1 - 一种巷外施工优化巷道区域应力场的方法 - Google Patents

一种巷外施工优化巷道区域应力场的方法 Download PDF

Info

Publication number
WO2016107435A1
WO2016107435A1 PCT/CN2015/098034 CN2015098034W WO2016107435A1 WO 2016107435 A1 WO2016107435 A1 WO 2016107435A1 CN 2015098034 W CN2015098034 W CN 2015098034W WO 2016107435 A1 WO2016107435 A1 WO 2016107435A1
Authority
WO
WIPO (PCT)
Prior art keywords
stress
roadway
passageway
drilling
optimizing
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.)
Ceased
Application number
PCT/CN2015/098034
Other languages
English (en)
French (fr)
Inventor
张农
郑西贵
付世雄
岳炜
刘娜
师超民
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.)
China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
Original Assignee
China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
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 China University of Mining and Technology CUMT, China University of Mining and Technology Beijing CUMTB filed Critical China University of Mining and Technology CUMT
Publication of WO2016107435A1 publication Critical patent/WO2016107435A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/001Improving soil or rock, e.g. by freezing; Injections

Definitions

  • the invention relates to a method for optimizing the stress field of a roadway outside the roadway, and is particularly suitable for optimizing the regional stress field of the roadway before the deep well and high ground stress roadway excavation, and belongs to the technical field of roadway support.
  • the deformation of the roadway is an inevitable phenomenon in the production of coal mines. Due to the differences in specific conditions, the deformation of the roadway will result in different deformation phenomena such as roof subsidence, two-way approaching and bottom drum, so that the roadway section cannot meet the ventilation, transportation and pedestrians. Demand for production activities such as transportation. Especially after coal mining has entered deep mining, the roadway has turned into a high-stress roadway.
  • the deep well high-stress roadway shows the characteristics of large pressure, large deformation and fast deformation speed, especially the large horizontal stress and the large deformation of the bottom drum.
  • the roadway needs frequent renovation to meet the normal production needs. Practice has shown that the rate of roadway renovation in deep mining can reach 40%-80%, and some even up to 100%.
  • the purpose of the present invention is to provide a method for drilling and blasting outside the roadway for some deep wells and high ground stress roadways that do not have the conditions for the pressure relief scheme in the roadway, and must be relieved before the tunneling. Optimize the stress field method in the roadway area.
  • the method for optimizing the stress field of a roadway region outside the roadway of the present invention comprises the following steps:
  • the horizontal distance a of the pressure relief lane and the pre-excavation roadway is 0-30 m, and the vertical distance b is 5-40 m.
  • the vertical distance e between the stress relieving borehole and the pre-drilling tunnel is 2 to 3 times the span of the pre-digging tunnel.
  • the multi-row stress optimization drilling has a spacing f of 0.6-2 m adjacent to the two rows, and the row g of the adjacent two rows is 0.6-1.2 m, the length of the stress optimized drilling l, the stress optimized drilling and the vertical direction
  • the angle ⁇ is determined by the horizontal distance a, the vertical distance b, and the relative distance c.
  • the charging length d of the charging zone is 1 to 3 m.
  • the invention removes the ground stress in the roadway connected with the pre-excavation roadway by stress, and obtains the main stress magnitude and direction in the surrounding rock of the area where the pre-drilling roadway is located, and calculates and analyzes the roadway after the excavation roadway The position of the largest principal stress difference formed in the gang.
  • a pressure relief roadway parallel to the pre-digging roadway is pre-excavated.
  • the support strength of the pressure relief roadway allows large deformation of the roadway even after the completion of the borehole pressure relief. Destruction, a certain pressure relief effect on the pre-drilling roadway.
  • Multi-column stress-optimized drilling is carried out from the pressure relief lane of the bottom plate to the position of the maximum principal stress difference between the left and right gangs of the pre-drilling roadway, and the drilling is performed by charging and static blasting.
  • the stress-optimized drilling can be divided into a group by multiple rows, and the pressure is decompressed by means of group sequential blasting.
  • the drilling, charging and blasting pressure relief are carried out, and the stress field of the roadway in the full length of the pre-excavation roadway is optimized ahead of time.
  • the method is simple, the operation is convenient, and the implementation effect is good.
  • the main advantages are:
  • the excavation of the pressure relief roadway not only solves the problem of difficult construction of the pressure relief scheme in the roadway, but also the deformation of the pressure relief roadway also acts as a pressure relief for the pre-drilling roadway;
  • the blasting pressure relief is carried out on the position of the maximum principal stress difference, and the blasting pressure relief is objective and targeted;
  • the method of static blasting is used to carry out blasting and pressure relief, which will not cause damage to the surrounding rock of the shallow roadway.
  • FIG. 1 is a schematic view showing a method for optimizing a stress field of a roadway region outside the roadway according to the present invention
  • FIG. 2 is a schematic view showing the stress relief drilling in the method for optimizing the stress field of the roadway in the roadway construction according to the present invention
  • FIG. 3 is a schematic view showing the arrangement of the top plate stress optimized drilling in the method for optimizing the stress field of the roadway in the roadway construction of the present invention.
  • Excavation pressure relief roadway In the floor level of the pre-drilling roadway 1, pre-drill a pressure relief lane 2 and support it; the strength of the support allows the pressure relief lane 2 to complete the stress optimization drilling arrangement and after blasting Large deformation and damage occur, and the pre-excavation into the roadway acts as a pressure relief.
  • the horizontal distance a of the pressure relief lane 2 and the pre-excavation roadway 1 is 0-30 m, and the vertical distance b is 5-40 m, as shown in FIG.
  • the hole position of the multi-column stress optimization drilling 4 is arranged from the top plate of the pressure relief roadway 2 to the maximum main stress difference position 3 of the pre-excavation roadway; the final hole position falls at the position of the maximum principal stress difference 3; stress optimization of the length of the borehole l, stress optimization of the angle between the borehole 4 and the vertical direction ⁇ is determined by the horizontal distance a, the vertical distance b, the relative distance c; the multi-column stress optimization drilling 4 phase
  • the pitch f of the adjacent two rows is 0.6 to 2 m
  • the row g of the adjacent two rows is 0.6 to 1.2 m
  • the diameter D of the drilled hole is 40 mm or more.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Soil Sciences (AREA)

Abstract

公开了一种巷外施工优化巷道区域应力场的方法,属于巷道支护技术领域。首先在预掘进巷道(1)的底板岩层中合适位置掘进一条卸压巷(2),并在与预掘进巷道(1)相连通的巷道(6)内测试地应力,通过计算和分析主应力得到巷道掘进后巷帮最大主应力差位置(3)。从卸压巷(2)内向最大主应力差位置(3)处施工多列应力优化钻孔(4),并在最大主应力差位置(3)进行静力爆破,从而优化巷道区域应力场。该方法可以对不具备巷内施工卸压方案条件的高应力巷道进行卸压和巷道区域应力场优化,其方法简单,操作方便,实施效果好。具有广阔的应用前景。

Description

一种巷外施工优化巷道区域应力场的方法 技术领域
本发明涉及一种巷外施工优化巷道区域应力场的方法,尤其适用于深井、高地应力巷道掘进前对巷道进行区域应力场优化,属于巷道支护技术领域。
背景技术
巷道的变形是煤矿生产中的必然现象,巷道因具体赋存条件的差异,会产生顶板下沉、两帮移近和底鼓等不同的变形现象,使得巷道断面不能满足通风、运输、行人、运料等生产活动的需求。尤其是煤矿开采进入深部开采以后,巷道转变为高应力巷道。深井高应力巷道表现出压力大、变形量大及变形速度快等特点,尤其是水平应力大、底鼓变形量大,巷道需要经常的翻修才能满足正常的生产需要。实践表明,深部开采的巷道翻修率可达40%-80%,有的甚至高达100%。深井、高应力巷道的有效支护问题给煤矿的正常生产带来巨大的困扰。针对以上的问题,国内外学者和煤矿工程技术人员提出了许多的卸压理论和方法,并进行了多次实践,包括支架加固、钻孔卸压、切槽等等。但是这些方法多是基于巷道内施工,滞后或平行于巷道掘进,与巷道掘进相矛盾,提高了工人的劳动强度,增加了施工工序,仅在已掘进的巷道和掘进工作面前方几米的范围内可以实施,且效果局限,深井巷道变形仍然严重。当深井巷道的赋存条件不允许巷道内施工卸压方案,但是在掘进前就必须进行卸压时,上述方法即不具有可行性,所以对于该类巷道不能采用现有的方法进行卸压,亟需提出一种巷外施工、有效可行的卸压方法。
发明内容
技术问题:本发明的目的是针对部分深井、高地应力巷道不具备本巷道内施工卸压方案的条件、而又必须在掘进前进行卸压的问题,提供一种在巷外施工的钻孔爆破优化巷道区域应力场方法。
技术方案:本发明的巷外施工优化巷道区域应力场的方法,包括如下步骤:
(1)在与预掘进巷道相连通的巷道内,施工应力解除钻孔,利用应力解除法实测地应力,得到主应力的大小和方向分布,计算并确定预掘进巷道掘巷以后,预掘巷道两帮最大主应力差位置与预掘巷帮的相对距离c;
(2)在预掘进巷道的底板层位中,预先掘进一卸压巷,并进行支护;
(3)从卸压巷顶板向预掘巷道两帮最大主应力差位置分别布置多列应力优化钻孔的孔位;
(4)按排逐一施工应力优化钻孔,并在每个应力优化钻孔的孔底装药区装药;
(5)对应力优化钻孔进行静力爆破,优化巷道区域应力场。
所述的卸压巷与预掘进巷道的水平距离a为0~30m,垂直距离b为5~40m。
所述的应力解除钻孔与预掘进巷道的垂直距离e为2~3倍的预掘进巷道跨度范围。
所述的多列应力优化钻孔相邻两列的间距f为0.6~2m,相邻两排的排距g为0.6~1.2m,应力优化钻孔的长度l、应力优化钻孔与竖直方向的夹角α通过水平距离a、垂直距离b、相对距离c确定。
所述的装药区的装药长度d为1~3m。
有益效果:本发明在与预掘进巷道相连通的巷道内通过应力解除法侧地应力,得到预掘进巷道所处区域的围岩中主应力大小及方向,计算和分析得到出掘巷后巷道两帮中形成的最大主应力差位置。在预掘进巷道层位的下方合适的层位中,预先掘进一条与预掘进巷道平行的卸压巷,该卸压巷道的支护强度允许巷道发生大的变形甚至在钻孔卸压完成以后完全破坏,对预掘进巷道起到一定的卸压效果。从底板的卸压巷内分别向预掘进巷道的左右两帮最大主应力差位置处施工多列应力优化钻孔,对钻孔进行装药和静力爆破卸压。装药后可对应力优化钻孔采用多排分为一组,以组为单位顺序爆破的方式进行卸压。上一组应力优化钻孔爆破施工完成以后,循环进行钻孔、装药、爆破卸压,完成对预掘进巷道全长的巷道区域应力场超前优化,其方法简单,操作方便,实施效果好。主要优点有:
1.卸压巷的掘进不仅解决了巷内卸压方案施工困难的问题,而且卸压巷的变形对预掘进巷道也起到了卸压的作用;
2.多列钻孔的施工对预掘进巷道起到了一定的卸压效果;
3.对最大主应力差位置进行了爆破卸压,爆破卸压有目地性和针对性;
4.爆破时采用分组顺序爆破的方式进行卸压,卸压效果较好;
5.采用静力爆破的方式进行爆破卸压,不会对浅部的巷道围岩造成破坏。
附图说明
图1为本发明的巷外施工优化巷道区域应力场的方法示意图;
图2为本发明的巷外施工优化巷道区域应力场的方法中应力解除钻孔示意图;
图3为本发明的巷外施工优化巷道区域应力场的方法中顶板应力优化钻孔的布置示意图。
图中:1-预掘进巷道;2-卸压巷;3-最大主应力差位置;4-应力优化钻孔;5-装药区;6-巷道;7-应力解除钻孔。
具体实施方式
下面结合附图对本发明的一个实施例作进一步的描述:
本发明的巷外施工优化巷道区域应力场的方法,具体步骤如下:
(1)地应力的测试,得到最大主应力差位置:在与预掘进巷道1相连通的巷道6内,施工应力解除钻孔7,如图2所示,利用应力解除法实测地应力,得到主应力的大小和方向分布,计算并确定预掘进巷道1掘巷以后,预掘巷道两帮最大主应力差位置3与预掘巷帮的相对距离c;所述的应力解除钻孔7与预掘进巷道1的垂直距离e为2~3倍的预掘进巷道跨度范围。
(2)掘进卸压巷:在预掘进巷道1的底板层位中,预先掘进一卸压巷2,并进行支护;支护的强度允许卸压巷2完成应力优化钻孔布置、爆破后发生大的变形和破坏,对预掘进巷道起到卸压作用。所述的卸压巷2与预掘进巷道1的水平距离a为0~30m,垂直距离b为5~40m,如图1所示。
(3)布置应力优化钻孔:从卸压巷2顶板向预掘巷道两帮最大主应力差位置3分别布置多列应力优化钻孔4的孔位;终孔位置落在最大主应力差位置3处;应力优化钻孔4的长度l、应力优化钻孔4与竖直方向的夹角α通过水平距离a、垂直距离b、相对距离c确定;所述的多列应力优化钻孔4相邻两列的间距f为0.6~2m,相邻两排的排距g为0.6~1.2m,钻孔的直径D为40mm以上。
(4)按排逐一施工应力优化钻孔4,并在每个应力优化钻孔4的孔底装药,孔底装药区5的装药长度d为1~3m。
(5)对应力优化钻孔4进行静力爆破,优化巷道区域应力场。爆破时可采用多排分组,以组为单位顺序爆破的方式进行爆破卸压,以图3为例,每五排钻孔分为一个组,编号为1#~5#;首先对3#排钻孔进行爆破,间隔一段时间后,再对2#、4#排钻孔同时静力爆破,再相隔一段时间后,再对1#、5#排钻孔同时进行静力爆破。
(6):重复步骤(3)、(4)、(5):上一区段钻孔爆破完以后,重复进行钻孔、装药、爆破,直到巷道全场区域内完成巷道区域应力场优化目标为止。

Claims (5)

  1. 一种巷外施工优化巷道区域应力场的方法,其特在于包括如下步骤:
    (1)在与预掘进巷道(1)相连通的巷道(6)内,施工应力解除钻孔(7),利用应力解除法实测地应力,得到主应力的大小和方向分布,计算并确定预掘进巷道(1)掘巷以后,预掘巷道两帮最大主应力差位置(3)与预掘巷帮的相对距离c;
    (2)在预掘进巷道(1)的底板层位中,预先掘进一卸压巷(2),并进行支护;
    (3)从卸压巷(2)顶板向预掘巷道两帮最大主应力差位置(3)分别布置多列应力优化钻孔(4)的孔位;
    (4)按排逐一施工应力优化钻孔(4),并在每个应力优化钻孔(4)的孔底装药区(5)装药;
    (5)对应力优化钻孔(4)进行静力爆破,优化巷道区域应力场。
  2. 根据权利要求1所述的巷外施工优化巷道区域应力场的方法,其特征在于:所述的卸压巷(2)与预掘进巷道(1)的水平距离a为0~30m,垂直距离b为5~40m。
  3. 根据权利要求1所述的巷外施工优化巷道区域应力场的方法,其特征在于:所述的应力解除钻孔(7)与预掘进巷道(1)的垂直距离e为2~3倍的预掘进巷道跨度范围。
  4. 根据权利要求1所述的巷外施工优化巷道区域应力场的方法,其特征在于:所述的多列应力优化钻孔(4)相邻两列的间距f为0.6~2m,相邻两排的排距g为0.6~1.2m,应力优化钻孔(4)的长度l、应力优化钻孔(4)与竖直方向的夹角α通过水平距离a、垂直距离b、相对距离c确定。
  5. 根据权利要求1所述的巷外施工优化巷道区域应力场的方法,其特征在于:所述的装药区(5)的装药长度d为1~3m。
PCT/CN2015/098034 2014-12-29 2015-12-21 一种巷外施工优化巷道区域应力场的方法 Ceased WO2016107435A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410837427.7 2014-12-29
CN201410837427.7A CN104500078B (zh) 2014-12-29 2014-12-29 一种巷外施工优化巷道区域应力场的方法

Publications (1)

Publication Number Publication Date
WO2016107435A1 true WO2016107435A1 (zh) 2016-07-07

Family

ID=52941517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/098034 Ceased WO2016107435A1 (zh) 2014-12-29 2015-12-21 一种巷外施工优化巷道区域应力场的方法

Country Status (2)

Country Link
CN (1) CN104500078B (zh)
WO (1) WO2016107435A1 (zh)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110704927A (zh) * 2019-09-29 2020-01-17 安徽理工大学 一种深井巷道围岩动态控制方法
CN111963210A (zh) * 2020-09-14 2020-11-20 河北工程大学 一种巷道支护结构及其施工方法
CN113586062A (zh) * 2021-07-09 2021-11-02 平顶山天安煤业股份有限公司十二矿 一种用于高地应力环境下岩石巷道掘进的松动爆破方法
CN113591245A (zh) * 2021-08-04 2021-11-02 精英数智科技股份有限公司 一种超前钻探设计中钻孔自动布置的方法及装置
CN114542088A (zh) * 2022-02-22 2022-05-27 山东科技大学 一种基于最大允许底臌量的底臌控制设计方法
CN114993844A (zh) * 2022-07-08 2022-09-02 中国矿业大学 一种基于大直径钻孔的煤体应力集中程度判别方法及装置
CN115263318A (zh) * 2022-06-29 2022-11-01 中国矿业大学 一种冲击地压矿井掘进巷道迎头爆破裂孔组合卸压方法
CN115288606A (zh) * 2022-08-22 2022-11-04 华亭煤业集团有限责任公司 一种基于应力环境下的大直径钻孔卸压方法
CN115288679A (zh) * 2022-08-03 2022-11-04 中煤科工开采研究院有限公司 一种冲击地压煤层多巷掘进卸压防冲方法
CN115853521A (zh) * 2022-12-01 2023-03-28 浙江省隧道工程集团有限公司 一种小断面硐室斜交突变大断面硐室的开挖方法
CN116291734A (zh) * 2023-03-27 2023-06-23 中煤科工集团重庆研究院有限公司 一种煤巷掘进工作面前方煤体应力峰值位置动态测定方法
CN119293905A (zh) * 2024-09-23 2025-01-10 中国矿业大学(北京) 一种三维应力场中卸压钻孔间距确定方法及系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104500078B (zh) * 2014-12-29 2016-08-17 中国矿业大学 一种巷外施工优化巷道区域应力场的方法
CN111578797B (zh) * 2020-07-06 2022-05-31 酒泉钢铁(集团)有限责任公司 一种井下中深孔爆破悬顶处理方法
CN112483097A (zh) * 2020-12-18 2021-03-12 山东科技大学 一种基于翻修的立体煤柱下采场巷道防冲方法
CN115288607B (zh) * 2022-08-22 2025-05-27 华亭煤业集团有限责任公司 一种区域构造高水平应力区大直径钻孔卸压方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1180519A1 (ru) * 1984-04-03 1985-09-23 Коммунарский горно-металлургический институт Способ разгрузки и упрочнени массива горных пород
SU1263868A1 (ru) * 1984-12-05 1986-10-15 Коммунарский горно-металлургический институт Способ управлени напр женным состо нием пород вокруг выработки
SU1643726A1 (ru) * 1988-06-13 1991-04-23 Всесоюзный Научно-Исследовательский, Проектный И Конструкторский Институт Горного Дела Цветной Металлургии Способ проведени горных выработок в услови х повышенного горного давлени
CN1865660A (zh) * 2006-06-16 2006-11-22 中国矿业大学 一种底板围岩弱化区域的构筑方法
CN102296958A (zh) * 2011-07-22 2011-12-28 山东科技大学 人造空间缺陷体防治冲击地压方法
CN102518471A (zh) * 2011-11-14 2012-06-27 山东科技大学 煤矿高应力区域巷道冲击地压能量释放方法
CN104500078A (zh) * 2014-12-29 2015-04-08 中国矿业大学 一种巷外施工优化巷道区域应力场的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540995A1 (de) * 1985-03-01 1986-09-04 Markmann & Moll GmbH & Co KG, 4300 Essen Verpress- und rohrloesevorrichtung
GB2358417B (en) * 2000-01-18 2002-01-09 Allan Cassells Sharp A method for construction and operation of subaqueous tunnels
CN101864961B (zh) * 2010-05-27 2011-11-16 武汉大学 一种岩爆的主动防治方法
CN102937399B (zh) * 2012-11-20 2014-12-03 武汉大学 一种基于地应力瞬态释放的应力解除爆破方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1180519A1 (ru) * 1984-04-03 1985-09-23 Коммунарский горно-металлургический институт Способ разгрузки и упрочнени массива горных пород
SU1263868A1 (ru) * 1984-12-05 1986-10-15 Коммунарский горно-металлургический институт Способ управлени напр женным состо нием пород вокруг выработки
SU1643726A1 (ru) * 1988-06-13 1991-04-23 Всесоюзный Научно-Исследовательский, Проектный И Конструкторский Институт Горного Дела Цветной Металлургии Способ проведени горных выработок в услови х повышенного горного давлени
CN1865660A (zh) * 2006-06-16 2006-11-22 中国矿业大学 一种底板围岩弱化区域的构筑方法
CN102296958A (zh) * 2011-07-22 2011-12-28 山东科技大学 人造空间缺陷体防治冲击地压方法
CN102518471A (zh) * 2011-11-14 2012-06-27 山东科技大学 煤矿高应力区域巷道冲击地压能量释放方法
CN104500078A (zh) * 2014-12-29 2015-04-08 中国矿业大学 一种巷外施工优化巷道区域应力场的方法

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110704927B (zh) * 2019-09-29 2022-09-30 安徽理工大学 一种深井巷道围岩动态控制方法
CN110704927A (zh) * 2019-09-29 2020-01-17 安徽理工大学 一种深井巷道围岩动态控制方法
CN111963210A (zh) * 2020-09-14 2020-11-20 河北工程大学 一种巷道支护结构及其施工方法
CN113586062A (zh) * 2021-07-09 2021-11-02 平顶山天安煤业股份有限公司十二矿 一种用于高地应力环境下岩石巷道掘进的松动爆破方法
CN113591245A (zh) * 2021-08-04 2021-11-02 精英数智科技股份有限公司 一种超前钻探设计中钻孔自动布置的方法及装置
CN113591245B (zh) * 2021-08-04 2024-04-26 精英数智科技股份有限公司 一种超前钻探设计中钻孔自动布置的方法及装置
CN114542088A (zh) * 2022-02-22 2022-05-27 山东科技大学 一种基于最大允许底臌量的底臌控制设计方法
CN115263318A (zh) * 2022-06-29 2022-11-01 中国矿业大学 一种冲击地压矿井掘进巷道迎头爆破裂孔组合卸压方法
CN115263318B (zh) * 2022-06-29 2023-09-19 中国矿业大学 一种冲击地压矿井掘进巷道迎头爆破裂孔组合卸压方法
CN114993844A (zh) * 2022-07-08 2022-09-02 中国矿业大学 一种基于大直径钻孔的煤体应力集中程度判别方法及装置
CN115288679A (zh) * 2022-08-03 2022-11-04 中煤科工开采研究院有限公司 一种冲击地压煤层多巷掘进卸压防冲方法
CN115288606A (zh) * 2022-08-22 2022-11-04 华亭煤业集团有限责任公司 一种基于应力环境下的大直径钻孔卸压方法
CN115853521A (zh) * 2022-12-01 2023-03-28 浙江省隧道工程集团有限公司 一种小断面硐室斜交突变大断面硐室的开挖方法
CN116291734A (zh) * 2023-03-27 2023-06-23 中煤科工集团重庆研究院有限公司 一种煤巷掘进工作面前方煤体应力峰值位置动态测定方法
CN119293905A (zh) * 2024-09-23 2025-01-10 中国矿业大学(北京) 一种三维应力场中卸压钻孔间距确定方法及系统

Also Published As

Publication number Publication date
CN104500078B (zh) 2016-08-17
CN104500078A (zh) 2015-04-08

Similar Documents

Publication Publication Date Title
CN104500078B (zh) 一种巷外施工优化巷道区域应力场的方法
CN104564086B (zh) 一种大巷区域应力场优化方法
CN103089275B (zh) 富水极破碎围岩隧道塌方段围岩控制方法
CN101387202B (zh) 隧道内已成初支软弱围岩地段扩挖管棚工作室的方法
CN105909254B (zh) 突出煤层底板上仰穿层定向孔超前区域掩护煤巷掘进方法
CN111255463B (zh) 坚硬顶板梳状长钻孔分段压裂巷道变形源头治理方法
CN103437768B (zh) 一种不留顶底柱预置空间充填采矿法
WO2015103861A1 (zh) 沿空留巷y型通风高位回风巷钻孔抽采瓦斯方法
CN103362539A (zh) 留巷钻场钻孔抽采卸压瓦斯的方法
CN105804788A (zh) 一种煤层瓦斯巷道治理方法
CN104234667A (zh) 卤水沟渠及其系统和开挖方法
CN104047629A (zh) 薄煤层综采沿空留巷定向钻进抽采临近下煤层瓦斯的方法
CN104100272A (zh) 一种隧道穿越不良地质的快速施工方法
CN109915197A (zh) 一种底抽岩巷千米定向长钻孔替代中部底抽岩巷的方法
CN105156120A (zh) 一种傍山类洞库斜井反向开挖施工方法
CN116291186A (zh) 深部高地应力巷道围岩钻孔卸压结构及其效果评价方法
CN103557001A (zh) 一种低段高无底柱留矿嗣后充填采矿法
CN113513360A (zh) 一种单一厚煤层综放开采采空区瓦斯抽采方法
CN104989330A (zh) 煤层气开采方法
CN106401591B (zh) 小角度下穿高速网格隧道施工方法
CN204312093U (zh) 富水软土地层浅埋暗挖隧道全断面注浆加固结构
CN116537794A (zh) 一种浅埋暗挖三洞大断面隧道下穿既有铁路组合施工方法
CN113550754B (zh) 基于底抽巷穿层钻孔进行煤层巷道超前钻探的方法和系统
CN114017103B (zh) 一种长壁逐巷胶结充填采煤工作面参数设计方法
CN104632229A (zh) 一种基于主应力差进行巷道区域应力场优化的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15875113

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15875113

Country of ref document: EP

Kind code of ref document: A1