矿山压力与顶板管理
礦山壓力與頂闆管理
광산압력여정판관리
GROUND PRESSURE AND STRATA CONTROL
2001年
1期
49-50，63
,共3页
综采放顶煤%放煤步距
綜採放頂煤%放煤步距
종채방정매%방매보거
针对鲍店煤矿1303预采顶分层网下综放面顶煤较硬(f=3.1～3.9)，支撑压力相对较小的具体条件，分析了放煤后期放煤口处存在“全煤拱”、“煤矸拱”、“全矸拱”三种拱结构与“见网”与“见矸”两种非拱结构，并根据放出规律提出合理放煤步距。
針對鮑店煤礦1303預採頂分層網下綜放麵頂煤較硬(f=3.1～3.9)，支撐壓力相對較小的具體條件，分析瞭放煤後期放煤口處存在“全煤拱”、“煤矸拱”、“全矸拱”三種拱結構與“見網”與“見矸”兩種非拱結構，併根據放齣規律提齣閤理放煤步距。
침대포점매광1303예채정분층망하종방면정매교경(f=3.1～3.9)，지탱압력상대교소적구체조건，분석료방매후기방매구처존재“전매공”、“매안공”、“전안공”삼충공결구여“견망”여“견안”량충비공결구，병근거방출규률제출합리방매보거。
Based on the concrete condition of comparatively harder top-coal and smaller support compressive stress in No.1303 fully-mechanized top-coal caving face in Baodian coal mine which the first seam bed was pre-mined, the paper analyzes that there exists three arch configurations of “complete coal”, “coal and rock”, “complete rock” and two non-arch configurations of “appearing net”, “appearing rock” at the last period of top-coal caving in the top-coal caving mouth. Some suggestions for reasonable top-coal caving step distance are put forward according to the caving rule.
