WO2022052716A1 - 一种适于厚大矿体多采场同步开采的采矿新方法 - Google Patents

一种适于厚大矿体多采场同步开采的采矿新方法 Download PDF

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WO2022052716A1
WO2022052716A1 PCT/CN2021/111867 CN2021111867W WO2022052716A1 WO 2022052716 A1 WO2022052716 A1 WO 2022052716A1 CN 2021111867 W CN2021111867 W CN 2021111867W WO 2022052716 A1 WO2022052716 A1 WO 2022052716A1
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stope
ore
mining
stopes
vein
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PCT/CN2021/111867
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English (en)
French (fr)
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孙国权
李宁
刘海林
汪为平
肖益盖
王雨波
李鸿飞
刘帅
李鹏程
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中钢集团马鞍山矿山研究总院股份有限公司
华唯金属矿产资源高效循环利用国家工程研究中心有限公司
中钢集团南京华忻科技有限公司
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Publication of WO2022052716A1 publication Critical patent/WO2022052716A1/zh
Priority to ZA2022/04723A priority Critical patent/ZA202204723B/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor

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  • the invention belongs to the technical field of underground mine mining, in particular to an underground mine mining method, which is particularly suitable for efficient and rapid mining of steeply inclined thick and large ore bodies with stable ore rocks.
  • the mining methods for thick and large ore bodies in underground mines at home and abroad mainly include segmented caving method, staged caving method, segmented open field subsequent filling mining method, staged open field subsequent filling mining method and layered filling mining method.
  • Each mining method has its applicability and characteristics.
  • Staged caving and staged caving methods are suitable for mines with stable ore rock and allowable subsidence of the ground surface. They are gradually being phased out due to different degrees of subsidence within the limits of surface movement after the end of mining.
  • the layered filling mining method is mainly used in mining mining.
  • the mining method is usually one-by-one mining and one mining method. Due to the large amount of engineering and limited scraping operations, the production efficiency of ore blocks of this type of mining method cannot be further improved. Therefore, for a thick and large ore body with stable ore and rock, how to reduce the amount of mining and cutting works, realize the simultaneous coordinated production of multiple stopes, and improve the mine production capacity is a profound problem that mining workers need to explore and solve.
  • Chinese patent CN201610439450.X discloses "a new method for collaborative mining of underground double stopes in underground mines".
  • the ore body is divided into several blocks along the strike, and each block is divided into two stopes, left and right.
  • the two adjacent stopes share a mining lane.
  • the left and right stopes are mined at the same time, and the working face of the left stope is ahead. Right stope face.
  • the purpose of the present invention is to aim at the above-mentioned defects existing in the prior art, and to provide a kind of synchronous operation of multiple stopes, reduce the amount of mining quasi-cutting works, improve the mining operation environment, and improve the production efficiency of stopes, which is suitable for multi-mining of thick and large ore bodies.
  • a new method of mining with simultaneous mining is to aim at the above-mentioned defects existing in the prior art, and to provide a kind of synchronous operation of multiple stopes, reduce the amount of mining quasi-cutting works, improve the mining operation environment, and improve the production efficiency of stopes, which is suitable for multi-mining of thick and large ore bodies.
  • a new mining method suitable for simultaneous mining of thick and large ore bodies and multiple stopes of the present invention adopts the following technical solutions for mining:
  • the ore body is divided into a panel every 46-70m along the trend of the ore body, each panel is divided into 4 stopes, and the stope numbers from left to right are No. 1 stope, No. 2 stope, No. 3 stope and No. 4 stope, a total of 4 stopes; No. 1 stope and No. 4 stope use the same stope width, preferably 15-20m; No. 2 stope and No. 3 stope keep the same stope width.
  • the width of the stope is 8-15m; the stope width of the stope No. 2 and stope 3 located in the middle is smaller than the stope width of the stope stope No. 1 and stope 4 located on both sides.
  • the piercing transportation roadway connects the lower wall along the vein and the upper wall along the venous transportation road; from both sides of the piercing transportation roadway, excavate several exits according to the design spacing.
  • the mine entry road leads to the central position of the bottom of each stope, and the angle between the piercing transport roadway and the mine outlet road is 35° ⁇ 50°, preferably 40° ⁇ 45°.
  • the distance between adjacent ore outflow paths is generally 6 to 16m, preferably 8 to 12m.
  • a ore-gathering ditch is arranged in the center of the bottom of No. 1 stope and No. 4 stope respectively, vertical cutting grooves are arranged at the end or center of the ore-gathering ditch, and then rock drilling equipment is used in the ore-gathering ditch. Upward fan-shaped medium-deep holes are drilled at the top, and the vertical cutting grooves are used as free compensation spaces to form 8-15m high bottoming space after blasting row by row. Part of the caving ore is reserved in the bottoming space as a buffer for the caving upper ore body Floor.
  • No. 1 stope and No. 2 stope share one side of the mine access road, and No. 3 stope and No. 4 stope share the other side of the mine access road; each panel area is only arranged with one through-vein transport lane , Chuanmai transportation lane is located at the center of the junction of the bottom of No. 2 stope and No. 3 stope. This structural arrangement is beneficial to reduce the amount of cutting engineering.
  • the bottom-up segmented blasting described in step 5) refers to dividing the ore body in the upper stope into several segments from bottom to top, each segment is 10-15m high, and the upper stope is caving out by segmented blasting. ore body.
  • a new mining method of the present invention suitable for simultaneous mining of thick and large ore bodies with multiple stopes has the following positive effects:
  • No. 1 stope and No. 4 stope can perform rock drilling, blasting, and mining at the same time.
  • the scraper is used to shovel the caving ore to the upper and lower slide shafts nearby, and the mining work does not affect each other, which can achieve two Simultaneous mining of each stope; depending on the stability of the backfill, the specifications of the No. 2 and No. 3 stopes can be flexibly changed, and whether to mine the No. 2 and No. 3 stopes simultaneously, and the production efficiency will increase by 50% when mining is performed at the same time.
  • the production efficiency is increased by 33%, which greatly realizes the safe and efficient large-scale mining of thick and large ore bodies.
  • the conveying lane along the vein on the upper wall is also used as the return air lane, and the fresh air flows through the conveying lane along the vein in the lower wall and the conveying lane along the vein to join the conveying lane along the vein on the upper wall, and finally passes through the return air shaft in the middle section and the return air shaft.
  • the wind shaft is discharged to the surface, which effectively improves the ventilation operation environment of the stope.
  • Figure 1 is a front view of a new mining method suitable for simultaneous mining of thick and large ore bodies with multiple stopes.
  • FIG. 2 is a top view of a new mining method suitable for simultaneous mining of thick and large ore bodies with multiple stopes, that is, the A-A direction view in FIG. 1 .
  • FIG. 3 is a side view of a new mining method suitable for simultaneous mining of thick and large ore bodies with multiple stopes, that is, the C-C direction diagram in FIG. 2 .
  • the ore body is divided into a panel 20 every 46-70m along the ore body trend, and each panel 20 is divided into No. 1 stope 16, No. 2 stope 17, No. 3 stope 18, from left to right.
  • No. 4 stope 19 has a total of 4 stopes; No. 1 stope 16 and No. 4 stope 19 maintain the same stope specifications, with a width of 16-20m; No. 2 stope 17 and No. 3 stope 18 maintain the same stope size. Field specifications, the width is 8 ⁇ 15m;
  • the vertical ore body trend is excavated through the vein transportation road 5, and the through vein transportation road 5 connects the lower wall along the vein transportation road 1 and the upper wall along the vein transportation road 2;
  • a number of mining access roads 11 are excavated at design intervals to reach the center of the bottom of each stope.
  • the included angle between the piercing transportation lane 5 and the mining access road 11 is 35° to 50°; the distance between adjacent mining access roads 11 is 8 ⁇ 50°. 12m;
  • a ore-gathering trench 15 is arranged in the center of the bottom of No. 1 stope 16 and No. 4 stope 19 respectively, and a vertical cut with a height of 8-15m is arranged at the end or center of the ore-gathering trench 15
  • the vertical cutting well is brushed by shallow hole blasting to form a vertical cutting groove
  • the ore collecting groove 15 is communicated with the ore outlet 11, and the two ends of the ore collecting groove 15 are respectively extended to the upper wall boundary of the stope—the upper wall The ore-rock contact surface 21 and the boundary of the lower wall—the lower-wall ore-rock contact surface 22, and then use the rock drilling equipment to drill upward fan-shaped medium-deep holes at the top of the ore gathering trench 15, and use the vertical cutting groove as the free compensation space row by row
  • a bottom-drawing space 7 with a height of 8-15 m is formed, and a part of the caving ore 6 is reserved in the drawing-bottoming space 7 as a buffer layer for
  • the bottom-up segmented blasting refers to dividing the upper stope ore body into several segments from bottom to top, each segment height is 10-15m, and the upper stope ore body is caving out by segmented blasting.
  • No. 1 stope 16 and No. 2 stope 17 share one side of the ore access road 11, and No. 3 stope 18 and No. 4 stope 19 share the other side of the ore access road 11; each panel area 20 Only one Chuanmai transportation lane 5 is arranged, and the Chuanmai transportation lane 5 is located at the center of the junction of the bottom of the No. 2 stope 17 and the No. 3 stope 18.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

一种适于厚大矿体多采场同步开采的采矿新方法,沿矿体走向划分若干盘区(20),将盘区划分为4个采场;在盘区底部中央位置掘进一条穿脉运输巷(5),自穿脉运输巷两侧掘进若干出矿进路(11)贯通所有采场,作为回采出矿时的铲运通道,在各采场底部布置集矿堑沟(15)和拉底空间(7);盘区内所有采场共用一条穿脉运输巷,先同步回采1号采场(16)和4号采场(19),回采结束并充填后,再同步开采余下两个采场。该方法可实现风流贯通,改善作业面工作环境;所有采场共用一条穿脉运输巷,减少了采切工程量、降低了采矿生产成本;一个盘区分2次同步开采,提升了矿石生产效率。

Description

一种适于厚大矿体多采场同步开采的采矿新方法 技术领域
本发明属于地下矿山开采技术领域,具体涉及一种地下矿山采矿方法,特别适用于高效快速开采矿岩稳固的急倾斜厚大矿体。
背景技术
目前,国内外针对地下矿山厚大矿体开采采矿方法主要有分段崩落法、阶段崩落法、分段空场嗣后充填采矿法、阶段空场嗣后充填采矿法和分层充填采矿法,各种采矿方法各有其适用性及特点。分段崩落和阶段崩落法适用于矿岩稳固、地表允许塌陷的矿山,由于其回采结束后造成地表移动界限范围内不同程度的塌陷,正逐步被淘汰;分层充填采矿法主要用于开采矿岩稳固性较差、矿石价值高的矿脉,由于分层回采和充填,导致矿石开采成本高和生产效率低下,仅在开采贵重金属矿脉时使用;分段空场嗣后充填和阶段空场嗣后充填采矿法主要适用于矿岩稳固、地表不允许发生变形的矿山,由于回采形成的采空区采用嗣后充填,使得该类采矿方法具有生产效率高、开采成本低、控制地表变形好的特点。
但无论是分段空场嗣后充填采矿法,还是阶段空场嗣后充填采矿法,往往都是采用隔一、采一开采方式,且一个矿房布置多条穿脉巷道、一个底部结构,采切工程量大、铲运作业受限制,导致该类采矿方法矿块生产效率无法进一步提升。因此,针对矿岩稳固的厚大矿体,如何减少采切工程量、实现多采场同步协调生产、提高矿山产能,这是当下采矿工作者需要探索解决的一个深刻问题。
中国专利CN201610439450.X公开了“一种地下矿山井下双采场协同开采的新方法”,其技术方案是:在矿体下盘脉外布置与矿体走向平行的沿脉平巷,将厚大矿体沿走向划分为若干矿块,每个矿块分为左、右两个采场,相邻两个采场共用一条出矿巷,左、右采场同时 回采,左采场工作面超前右采场工作面。该方法虽然实现了双采场协同开采,提高了矿块生产能力,但也存在了如下技术缺陷:
(1)相邻两个采场同时开采,采空区暴露面积较大,特别是当二步骤回采两侧均为充填体时,采场稳定性较差;
(2)仅在矿体下盘布置沿脉平巷,采场内为独头工作面,采场内凿岩、爆破、铲运机出矿通风较为困难,作业环境恶劣;
(3)相邻两个采场共用一条出矿巷,一个溜井,左、右采场铲运机同时出矿时易产生相互干扰,不利于提升铲运效率。
发明内容
本发明的目的就是针对现有技术存在的上述缺陷,而提供一种多采场同步作业、减少采准切割工程量、改善回采作业环境、提高采场生产效率的适于厚大矿体多采场同步开采的采矿新方法。
为实现本发明的上述目的,本发明一种适于厚大矿体多采场同步开采的采矿新方法采用以下技术方案进行回采:
1)在运输水平沿矿体走向在上盘围岩中布置上盘沿脉运输巷,在下盘围岩中布置下盘沿脉运输巷;沿矿体走向每隔60~100m分别在上盘沿脉运输巷一侧布置上盘溜井,在下盘沿脉运输巷和下盘溜井。
2)沿矿体走向每隔46~70m将矿体划分为一个盘区,每个盘区划分为4个采场,采场编号自左向右分别为1号采场、2号采场、3号采场、4号采场共4个采场;1号采场和4号采场采用相同的采场宽度,以15~20m为宜;2号采场和3号采场保持相同的采场宽度,以8~15m为宜;其中位于中间的2号采场和3号采场的采场宽度要小于位于两侧的1号采场和4号采场的采场宽度。
3)在盘区底部垂直矿体走向掘进穿脉运输巷,穿脉运输巷将下盘沿脉运输巷、上盘沿脉运输巷连通;自穿脉运输巷两侧按照设计间距掘进若干条出矿进路通达各采场底部中央位置,穿脉运输巷与出矿 进路夹角为35°~50°,以40°~45°为佳。
相邻出矿进路间距一般为6~16m,以8~12m为宜。
4)垂直矿体走向分别在1号采场和4号采场底部中央布置一条集矿堑沟,在集矿堑沟端部或中央布置垂直切割槽,然后利用凿岩设备在集矿堑沟顶部钻凿上向扇形中深孔,以垂直切割槽为自由补偿空间逐排爆破后形成8~15m高的拉底空间,在拉底空间内预留部分崩落矿石作为崩落上部矿体的缓冲垫层。
5)利用凿岩设备在位于1号采场和4号采场顶部的凿岩硐室内钻凿下向大直径深孔,以拉底空间和垂直切割槽为自由面采用自下而上分段爆破或自上盘向下盘分排崩落采场上部矿体,利用1~2台铲运机将1号采场和4号采场内的崩落矿石由出矿进路内铲装后经穿脉运输巷按“就近原则”卸入上盘溜井或下盘溜井,从而实现1号采场和4号采场同步协调开采。
6)1号采场和4号采场回采结束后实施胶结充填,待充填体达到设计养护强度后,采用4)、5)同样的回采工艺开采2号采场和3号采场。
在实际应用中1号采场和2号采场共用一侧出矿进路,3号采场和4号采场共用另一侧出矿进路;每个盘区只布置一条穿脉运输巷,穿脉运输巷位于2号采场和3号采场底部交界处的中央位置。这种结构布置方式有利于降低采切工程量。
步骤5)中所述的自下而上分段爆破是指将采场上部矿体由下向上划分为若干分段,每个分段高度为10~15m,采用分段爆破方式崩落采场上部矿体。
本发明一种适于厚大矿体多采场同步开采的采矿新方法采用以上技术方案后,具体表现为以下积极效果:
(1)在开采矿岩稳固性较好的厚大矿体时,仅需要在盘区底部中央布置一条穿脉运输巷,盘区内所有采场共用该穿脉运输巷,使得千吨采切比下降约35%、采准工作比重下降约29%,有效地减少了采 切工程量。
(2)1号采场和4号采场可同时进行凿岩、爆破、出矿,采用铲运机将崩落的矿石就近铲运至上、下盘溜井,出矿工作互不影响,可实现两个采场同步开采;视充填体稳固性可灵活变换2号和3号采场规格,并决定是否同步开采2号和3号采场,同时开采时,生产效率提升50%,分先后开采时生产效率提升33%,极大程度地实现了厚大矿体安全高效规模化开采。
(3)采场回采时,上盘沿脉运输巷兼做回风巷,新鲜风流经下盘沿脉运输巷、穿脉运输巷汇流上盘沿脉运输巷,最后经中段回风井、回风竖井排至地表,有效改善了采场通风作业环境。
(4)采场充填时,特别是盘区中间两个采场充填时,仅需要分在底部穿脉运输巷两侧各砌筑一面充填挡墙,提升了充填作业效率,降低了充填材料成本。
附图说明
图1是一种适于厚大矿体多采场同步开采的采矿新方法正视图。
图2是一种适于厚大矿体多采场同步开采的采矿新方法俯视图,即:图1中的A-A向图。
图3是一种适于厚大矿体多采场同步开采的采矿新方法侧视图,即图2中的C-C向图。
图中标记为:1-下盘沿脉运输巷;2-上盘沿脉运输巷;3-凿岩水平下盘运输巷;4-凿岩水平上盘巷;5-穿脉运输巷;6-崩落矿石;7-拉底空间;8-大直径深孔;9-凿岩联络巷;10-凿岩硐室;11-出矿进路;12-下盘溜井;13-上盘溜井;14-充填体;15-集矿堑沟;16-1号采场(矿房);17-2号采场(矿房);18-3号采场(矿房);19-4号采场(矿房);20-盘区;21-上盘矿岩接触面;22-下盘矿岩接触面。
具体实施方式
为更好地描述本发明,下面结合附图对本发明一种适于厚大矿体 多采场同步开采的采矿新方法做进一步详细描述。
由图1所示的本发明一种适于厚大矿体多采场同步开采的采矿新方法正视图并结合图2、图3看出,本发明一种适于厚大矿体多采场同步开采的采矿新方法,采用以下工艺进行回采:
1)在运输水平沿矿体走向在上盘围岩中布置上盘沿脉运输巷2,在下盘围岩中布置下盘沿脉运输巷1;沿矿体走向每隔60~100m分别在上盘沿脉运输巷2一侧布置上盘溜井13,在下盘沿脉运输巷1一侧布置下盘溜井12;在凿岩水平之上盘围岩中沿着矿体走向布置凿岩水平上盘巷4,在凿岩水平之下盘围岩中沿着矿体走向布置凿岩水平下盘运输巷3;
2)沿矿体走向每隔46~70m将矿体划分为一个盘区20,每个盘区20自左向右划分为1号采场16、2号采场17、3号采场18、4号采场19共4个采场;1号采场16和4号采场19保持相同的采场规格,宽度为16~20m;2号采场17和3号采场18保持相同的采场规格,宽度为8~15m;
3)在盘区20底部垂直矿体走向掘进穿脉运输巷5,穿脉运输巷5将下盘沿脉运输巷1、上盘沿脉运输巷2连通;自穿脉运输巷5两侧按照设计间距掘进若干条出矿进路11通达各采场底部中央位置,穿脉运输巷5与出矿进路11夹角为35°~50°;相邻出矿进路11的间距为8~12m;
4)垂直矿体走向分别在1号采场16和4号采场19底部中央布置一条集矿堑沟15,在集矿堑沟15端部或中央布置1条高度为8~15m的垂直切割井,通过浅孔爆破将垂直切割井刷大形成垂直切割槽,集矿堑沟15与出矿进路11连通,集矿堑沟15两端分别延长到采场的上盘边界——上盘矿岩接触面21和下盘边界——下盘矿岩接触面22,然后利用凿岩设备在集矿堑沟15顶部钻凿上向扇形中深孔,以垂直切割槽为自由补偿空间逐排爆破后形成8~15m高的拉底空间 7,在拉底空间7内预留部分崩落矿石6作为崩落上部矿体的缓冲垫层;
5)利用凿岩设备在位于1号采场16和4号采场19顶部的凿岩硐室10内钻凿下向大直径深孔8,凿岩硐室10通过其两侧的凿岩联络巷9分别与凿岩水平上盘巷4、凿岩水平下盘运输巷3连通;以拉底空间7和垂直切割槽为自由面采用自下而上分段爆破或自上盘向下盘分排崩落采场上部矿体;出矿时,操作1~2台铲运机将1号采场16和4号采场17内的崩落矿石6由出矿进路11内铲装后经穿脉运输巷5卸入上盘溜井13或下盘溜井12,为避免铲运机作业期间相互干扰,可按照“就近原则”同时实施1号采场16和4号采场19出矿作业,从而实现1号采场和4号采场同步协调开采;
所述的自下而上分段爆破是指将采场上部矿体由下向上划分为若干分段,每个分段高度为10~15m,采用分段爆破方式崩落采场上部矿体。
6)1号采场16和4号采场19回采结束后,用充填挡墙封闭底部各出矿进路11,并在挡墙上预留滤水孔,然后再将充填管网由凿岩水平凿岩联络巷9敷设至采场实施胶结充填,待充填体14达到设计养护强度后方可实施临近采场回采工作实施胶结充填,待充填体14达到设计养护强度后,采用4)、5)同样的回采工艺开采2号采场17和3号采场18,回采结束后在穿脉运输巷5两侧各砌筑一面充填挡墙,然后在凿岩水平实施充填作业并确保充填接顶。至此,整个盘区20内采场全部回采结束。
本发明方法之1号采场16和2号采场17共用一侧出矿进路11,3号采场18和4号采场19共用另一侧出矿进路11;每个盘区20只布置一条穿脉运输巷5,穿脉运输巷5位于2号采场17和3号采场18底部交界处的中央位置。

Claims (6)

  1. 一种适于厚大矿体多采场同步开采的采矿新方法,其特征在于采用以下工艺进行回采:
    1)在运输水平沿矿体走向在上盘围岩中布置上盘沿脉运输巷(2),在下盘围岩中布置下盘沿脉运输巷(1);沿矿体走向每隔60~100m在上盘沿脉运输巷(2)一侧布置上盘溜井(13),在下盘沿脉运输巷(1)一侧布置下盘溜井(12);
    2)沿矿体走向每隔46~70m将矿体划分为一个盘区(20),每个盘区(20)自左向右划分为1号采场(16)、2号采场(17)、3号采场(18)、4号采场(19)共4个采场;
    3)在盘区(20)底部垂直矿体走向掘进穿脉运输巷(5),穿脉运输巷(5)将下盘沿脉运输巷(1)、上盘沿脉运输巷(2)连通;自穿脉运输巷(5)两侧按照设计间距掘进若干条出矿进路(11)通达各采场底部中央位置,穿脉运输巷(5)与出矿进路(11)夹角为35°~50°;
    4)垂直矿体走向分别在1号采场(16)和4号采场(19)底部中央布置一条集矿堑沟(15),在集矿堑沟(15)端部或中央布置垂直切割槽,然后利用凿岩设备在集矿堑沟(15)顶部钻凿上向扇形中深孔,以垂直切割槽为自由补偿空间逐排爆破后形成8~15m高的拉底空间(7),在拉底空间(7)内预留部分崩落矿石(6)作为崩落上部矿体的缓冲垫层;
    5)利用凿岩设备在位于1号采场(16)和4号采场(19)顶部的凿岩硐室(10)内钻凿下向大直径深孔(8),以拉底空间(7)和垂直切割槽为自由面采用自下而上分段爆破或自上盘向下盘分排崩落采场上部矿体,操作铲运机将1号采场(16)和4号采场(17)内的崩落矿石(6)由出矿进路(11)内铲装后经穿脉运输巷(5)就近卸入上盘溜井(13)或下盘溜井(12),从而实现1号采场和4号采 场同步协调开采;
    6)1号采场(16)和4号采场(19)回采结束后实施胶结充填,待充填体(14)达到设计养护强度后,采用4)、5)同样的回采工艺开采2号采场(17)和3号采场(18)。
  2. 如权利要求1所述的一种适于厚大矿体多采场同步开采的采矿新方法,其特征在于:所述的1号采场(16)和4号采场(19)保持相同的采场规格,宽度为15~20m;所述的2号采场(17)和3号采场(18)保持相同的采场规格,宽度为8~15m;其中位于中间的2号采场(17)和3号采场(18)的规格要小于位于两侧的1号采场(16)和4号采场(19)的采场规格。
  3. 如权利要求2所述的一种适于厚大矿体多采场同步开采的采矿新方法,其特征在于:1号采场(16)和2号采场(17)共用一侧出矿进路(11),3号采场(18)和4号采场(19)共用另一侧出矿进路(11)。
  4. 如权利要求3所述的一种适于厚大矿体多采场同步开采的采矿新方法,其特征在于:相邻出矿进路(11)的间距为8~12m。
  5. 如权利要求1、2、3或4所述的一种适于厚大矿体多采场同步开采的采矿新方法,其特征在于:步骤5)中所述的自下而上分段爆破是指将采场上部矿体由下向上划分为若干分段,每个分段高度为10~15m,采用分段爆破方式崩落采场上部矿体。
  6. 如权利要求5所述的一种适于厚大矿体多采场同步开采的采矿新方法,其特征在于:每个盘区(20)只布置一条穿脉运输巷(5),穿脉运输巷(5)位于2号采场(17)和3号采场(18)底部交界处的中央位置。
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